Dépouillements

Theoretical and experimental reevaluation of synchronous reluctance machine / Moghaddam, Reza Rajabi in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 6 - 13 Titre : Theoretical and experimental reevaluation of synchronous reluctance machine Type de document : texte imprimé Auteurs : Moghaddam, Reza Rajabi, Auteur ; Magnussen, Freddy, Auteur ; Sadarangani, Chandur, Auteur Article en page(s) : pp. 6 - 13 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Field  oriented  control  Operation  diagram  (OPD)  Parameter  estimation  Saturation  Synchronous  reluctance  machine  (SynRM) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper theoretically introduces and develops a new operation diagram (OPD) and parameter estimator for the synchronous reluctance machine (SynRM). The OPD demonstrates the behavior of the machine's main performance parameters, such as torque, current, voltage, frequency, flux, power factor (PF), and current angle, all in one graph. This diagram can easily be used to describe different control strategies, possible operating conditions, both below- and above-rated speeds, etc. The saturation effect is also discussed with this diagram by finite-element-method calculations. A prototype high-performance SynRM is designed for experimental studies, and then, both machines' [corresponding induction machine (IM)] performances at similar loading and operation conditions are tested, measured, and compared to demonstrate the potential of SynRM. The laboratory measurements (on a standard 15-kW Eff1 IM and its counterpart SynRM) show that SynRM has higher efficiency, torque density, and inverter rating and lower rotor temperature and PF in comparison to IM at the same winding-temperature-rise condition. The measurements show that the torque capability of SynRM closely follows that of IM. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5075554 [article] Theoretical and experimental reevaluation of synchronous reluctance machine [texte imprimé] / Moghaddam, Reza Rajabi, Auteur ; Magnussen, Freddy, Auteur ; Sadarangani, Chandur, Auteur . - pp. 6 - 13. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 6 - 13 Mots-clés : Field  oriented  control  Operation  diagram  (OPD)  Parameter  estimation  Saturation  Synchronous  reluctance  machine  (SynRM) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper theoretically introduces and develops a new operation diagram (OPD) and parameter estimator for the synchronous reluctance machine (SynRM). The OPD demonstrates the behavior of the machine's main performance parameters, such as torque, current, voltage, frequency, flux, power factor (PF), and current angle, all in one graph. This diagram can easily be used to describe different control strategies, possible operating conditions, both below- and above-rated speeds, etc. The saturation effect is also discussed with this diagram by finite-element-method calculations. A prototype high-performance SynRM is designed for experimental studies, and then, both machines' [corresponding induction machine (IM)] performances at similar loading and operation conditions are tested, measured, and compared to demonstrate the potential of SynRM. The laboratory measurements (on a standard 15-kW Eff1 IM and its counterpart SynRM) show that SynRM has higher efficiency, torque density, and inverter rating and lower rotor temperature and PF in comparison to IM at the same winding-temperature-rise condition. The measurements show that the torque capability of SynRM closely follows that of IM. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5075554

Coupled electromagnetic–thermal effects of stray flux: software solution for industrial applications / Cranganu-Cretu, Bogdan in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 14 - 21 Titre : Coupled electromagnetic–thermal effects of stray flux: software solution for industrial applications Type de document : texte imprimé Auteurs : Cranganu-Cretu, Bogdan, Auteur ; Kertesz, Audrey, Auteur ; Smajic, Jasmin, Auteur Article en page(s) : pp. 14 - 21 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Eddy  currents  Finite-element  method  (FEM)  Stray  flux Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents a Visual Basic software solution, aimed at driving a complex finite-element-method-based electromagnetic-thermal solver to allow for a range of virtual experiments for accurate simulations of numerically demanding stray-magnetic-flux problems in power devices. The development allows for both engineering experiments (by a nonexpert numerical user) and for numerical experiments to determine the best setup of a simulation attempt. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5130244 [article] Coupled electromagnetic–thermal effects of stray flux: software solution for industrial applications [texte imprimé] / Cranganu-Cretu, Bogdan, Auteur ; Kertesz, Audrey, Auteur ; Smajic, Jasmin, Auteur . - pp. 14 - 21. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 14 - 21 Mots-clés : Eddy  currents  Finite-element  method  (FEM)  Stray  flux Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents a Visual Basic software solution, aimed at driving a complex finite-element-method-based electromagnetic-thermal solver to allow for a range of virtual experiments for accurate simulations of numerically demanding stray-magnetic-flux problems in power devices. The development allows for both engineering experiments (by a nonexpert numerical user) and for numerical experiments to determine the best setup of a simulation attempt. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5130244

Steady-state performance and stability analysis of mixed pole machines with electromechanical torque and rotor electric power to a shaft-mounted electrical load / Abdel-Khalik, Ayman S. in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 22 - 34 Titre : Steady-state performance and stability analysis of mixed pole machines with electromechanical torque and rotor electric power to a shaft-mounted electrical load Type de document : texte imprimé Auteurs : Abdel-Khalik, Ayman S., Auteur ; Masoud, Mahmoud I., Auteur ; Williams, Barry W., Auteur Article en page(s) : pp. 22 - 34 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Brushless  doubly  fed  Brushless  reluctance  Decoupled  control  Dual  stator  Mixed  pole  machine  (MPM)  Rotor  electric  power  Self-cascaded  Shaft-mounted  electric  load  Split  wound  Stability  analysis  Steady  state Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents the steady-state model, performance, and stability analysis of a mixed pole machine with a new operational mode which provides a rotor torque and an n -phase rotor electrical output power to a shaft-mounted rotating electrical load. The machine operated under this mode can be used in applications that require contactless power, such as in robotics, or applications that require independent control of both rotor torque and rotor electric power, such as for contactless rotational antennas and turret systems. The performance assessment includes electromagnetic torque, electrical efficiency, mechanical efficiency, and total efficiency based on both simulation and experimentation. The effect of electrical loading and stator voltage on both rotor torque and rotor electric power is also considered. The machine steady-state stability is introduced by plotting the machine operating characteristics that determine all stable operating regions of the machine under the proposed mode of operation. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5159378 [article] Steady-state performance and stability analysis of mixed pole machines with electromechanical torque and rotor electric power to a shaft-mounted electrical load [texte imprimé] / Abdel-Khalik, Ayman S., Auteur ; Masoud, Mahmoud I., Auteur ; Williams, Barry W., Auteur . - pp. 22 - 34. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 22 - 34 Mots-clés : Brushless  doubly  fed  Brushless  reluctance  Decoupled  control  Dual  stator  Mixed  pole  machine  (MPM)  Rotor  electric  power  Self-cascaded  Shaft-mounted  electric  load  Split  wound  Stability  analysis  Steady  state Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents the steady-state model, performance, and stability analysis of a mixed pole machine with a new operational mode which provides a rotor torque and an n -phase rotor electrical output power to a shaft-mounted rotating electrical load. The machine operated under this mode can be used in applications that require contactless power, such as in robotics, or applications that require independent control of both rotor torque and rotor electric power, such as for contactless rotational antennas and turret systems. The performance assessment includes electromagnetic torque, electrical efficiency, mechanical efficiency, and total efficiency based on both simulation and experimentation. The effect of electrical loading and stator voltage on both rotor torque and rotor electric power is also considered. The machine steady-state stability is introduced by plotting the machine operating characteristics that determine all stable operating regions of the machine under the proposed mode of operation. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5159378

On the modeling of commutation transients in split-phase synchronous motors supplied by multiple load-commutated inverters / Tessarolo, Alberto in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 35 - 43 Titre : On the modeling of commutation transients in split-phase synchronous motors supplied by multiple load-commutated inverters Type de document : texte imprimé Auteurs : Tessarolo, Alberto, Auteur ; Castellan, Simone, Auteur ; Menis, Roberto, Auteur Article en page(s) : pp. 35 - 43 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : AC-AC  power  conversion  Modeling  Rotating-machine  transient  analysis  Synchronous  motors  Synchronous  motor  drives  Thyristor  motor  drives  Variable-speed  drives Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Split-phase synchronous motors equipped with multiple-stator three-phase windings, each supplied by a load-commutated inverter, play an important role in today's very high power electrical-drive applications. A criticality of these systems is the possibility that commutations occur in different motor windings simultaneously. The resulting electromagnetic transient depends on the magnetic coupling of motor phases among them and with rotor circuits. In this paper, a model to describe this phenomenon is presented along with some dedicated tests, conducted on various split-phase configurations, to assess the model validity. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5229192 [article] On the modeling of commutation transients in split-phase synchronous motors supplied by multiple load-commutated inverters [texte imprimé] / Tessarolo, Alberto, Auteur ; Castellan, Simone, Auteur ; Menis, Roberto, Auteur . - pp. 35 - 43. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 35 - 43 Mots-clés : AC-AC  power  conversion  Modeling  Rotating-machine  transient  analysis  Synchronous  motors  Synchronous  motor  drives  Thyristor  motor  drives  Variable-speed  drives Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Split-phase synchronous motors equipped with multiple-stator three-phase windings, each supplied by a load-commutated inverter, play an important role in today's very high power electrical-drive applications. A criticality of these systems is the possibility that commutations occur in different motor windings simultaneously. The resulting electromagnetic transient depends on the magnetic coupling of motor phases among them and with rotor circuits. In this paper, a model to describe this phenomenon is presented along with some dedicated tests, conducted on various split-phase configurations, to assess the model validity. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5229192

Steady-state and transient performance analysis for a single-phase capacitor-run permanent-magnet motor with skewed rotor slots / Kurihara, Kazumi in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 44 - 51 Titre : Steady-state and transient performance analysis for a single-phase capacitor-run permanent-magnet motor with skewed rotor slots Type de document : texte imprimé Auteurs : Kurihara, Kazumi, Auteur ; Kubota, Tomotsugu, Auteur ; Hori, Masahiro, Auteur Article en page(s) : pp. 44 - 51 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Capacitance  Current  measurement  Finite-element  methods  (FEMs)  Permanent  magnet  (PMs)  Starting  synchrounous  motors  Torque  Velocity  measurement Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents a numerical analysis method to accurately predict the steady-state and transient performance of a single-phase capacitor-run permanent-magnet motor with skewed rotor slots. Two-dimensional time-stepping finite-element analysis has been used to successfully predict the steady-state and dynamic transient performance of the prototype motor by using a multislice model. The agreement between computed and measured results of the prototype motor validates the proposed analysis method. The maximum efficiency and minimum torque ripple versus the value of capacitance have been determined from the results of the steady-state synchronous performance analysis. The run-up response corresponding to skew pitch has been obtained from the results of the starting performance analysis. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5256226 [article] Steady-state and transient performance analysis for a single-phase capacitor-run permanent-magnet motor with skewed rotor slots [texte imprimé] / Kurihara, Kazumi, Auteur ; Kubota, Tomotsugu, Auteur ; Hori, Masahiro, Auteur . - pp. 44 - 51. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 44 - 51 Mots-clés : Capacitance  Current  measurement  Finite-element  methods  (FEMs)  Permanent  magnet  (PMs)  Starting  synchrounous  motors  Torque  Velocity  measurement Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents a numerical analysis method to accurately predict the steady-state and transient performance of a single-phase capacitor-run permanent-magnet motor with skewed rotor slots. Two-dimensional time-stepping finite-element analysis has been used to successfully predict the steady-state and dynamic transient performance of the prototype motor by using a multislice model. The agreement between computed and measured results of the prototype motor validates the proposed analysis method. The maximum efficiency and minimum torque ripple versus the value of capacitance have been determined from the results of the steady-state synchronous performance analysis. The run-up response corresponding to skew pitch has been obtained from the results of the starting performance analysis. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5256226

Acceleration-performance optimization for motors with large air gaps / Karutz, Philipp in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 52 - 60 Titre : Acceleration-performance optimization for motors with large air gaps Type de document : texte imprimé Auteurs : Karutz, Philipp, Auteur ; Nussbaumer, Thomas, Auteur ; Gruber, Wolfgang, Auteur Article en page(s) : pp. 52 - 60 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Acceleration  Large  air  gaps  Magnetic  levitation  Permanent  magnets  Synchronous  machines  Yield  optimization Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents an optimization-procedure yielding for minimal acceleration times for different speed ranges using the example of a magnetically levitated slice motor with a large air gap. The optimization is based on a set of analytical equations together with selected 3-D finite element method simulations with the aim to optimize both the stator geometry and the number of drive turns. It is shown that the use of 3-D instead of 2-D simulation tools is obligatory for motors with large air gaps for achieving sufficient simulation accuracy. The relevant equations for the optimization are derived, and the accuracy of the proposed method is verified by measurements on a prototype system. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5156279 [article] Acceleration-performance optimization for motors with large air gaps [texte imprimé] / Karutz, Philipp, Auteur ; Nussbaumer, Thomas, Auteur ; Gruber, Wolfgang, Auteur . - pp. 52 - 60. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 52 - 60 Mots-clés : Acceleration  Large  air  gaps  Magnetic  levitation  Permanent  magnets  Synchronous  machines  Yield  optimization Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents an optimization-procedure yielding for minimal acceleration times for different speed ranges using the example of a magnetically levitated slice motor with a large air gap. The optimization is based on a set of analytical equations together with selected 3-D finite element method simulations with the aim to optimize both the stator geometry and the number of drive turns. It is shown that the use of 3-D instead of 2-D simulation tools is obligatory for motors with large air gaps for achieving sufficient simulation accuracy. The relevant equations for the optimization are derived, and the accuracy of the proposed method is verified by measurements on a prototype system. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5156279

Rotor-shape optimization of interior-permanent-magnet motors to reduce harmonic iron losses / Yamazaki, Katsumi in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 61 - 69 Titre : Rotor-shape optimization of interior-permanent-magnet motors to reduce harmonic iron losses Type de document : texte imprimé Auteurs : Yamazaki, Katsumi, Auteur ; Ishigami, Hiroki, Auteur Article en page(s) : pp. 61 - 69 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Eddy  currents  Finite-element  methods  Harmonics  Hysteresis  Losses  Magnetic  field  Motor-speed  control  Optimization  methods  Permanent-magnet  motors  Stress Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : In this paper, we develop novel rotor designs of interior-permanent-magnet motors in order to reduce harmonic iron losses at high rotational speeds under field-weakening control. First, an optimization method, combined with an adaptive finite-element method, is applied to automatically determine the shapes of the magnets and rotor core. The optimized motor is manufactured to confirm the validity of the calculation. It is clarified that the iron loss of the optimized motor is reduced to nearly half of that of the conventional motor, without a significant decrease in maximum torque. Next, the contribution of each part of the rotor to the iron-loss reduction is analyzed by the experimental design method. Finally, several designs of the rotors are proposed from the viewpoints of manufacturing cost and performance. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5075553 [article] Rotor-shape optimization of interior-permanent-magnet motors to reduce harmonic iron losses [texte imprimé] / Yamazaki, Katsumi, Auteur ; Ishigami, Hiroki, Auteur . - pp. 61 - 69. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 61 - 69 Mots-clés : Eddy  currents  Finite-element  methods  Harmonics  Hysteresis  Losses  Magnetic  field  Motor-speed  control  Optimization  methods  Permanent-magnet  motors  Stress Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : In this paper, we develop novel rotor designs of interior-permanent-magnet motors in order to reduce harmonic iron losses at high rotational speeds under field-weakening control. First, an optimization method, combined with an adaptive finite-element method, is applied to automatically determine the shapes of the magnets and rotor core. The optimized motor is manufactured to confirm the validity of the calculation. It is clarified that the iron loss of the optimized motor is reduced to nearly half of that of the conventional motor, without a significant decrease in maximum torque. Next, the contribution of each part of the rotor to the iron-loss reduction is analyzed by the experimental design method. Finally, several designs of the rotors are proposed from the viewpoints of manufacturing cost and performance. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5075553

Optimal dovetail permanent magnet rotor solutions for various pole numbers / Kolehmainen, Jere in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 70 - 77 Titre : Optimal dovetail permanent magnet rotor solutions for various pole numbers Type de document : texte imprimé Auteurs : Kolehmainen, Jere, Auteur Article en page(s) : pp. 70 - 77 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Design  methodology  Electromagnetic  analysis  Optimization  methods  Permanent  magnet  machines  Rotating  machine  mechanical  factors  Structural  engineering  Synchronous  machines Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : A buried magnet rotor structure, which is supported only by permanent magnets, is proposed for medium-speed permanent magnet machines. Many design aspects of the dovetail-shaped rotor structure have been found. Various machine solutions, with pole numbers 6 to 14, are studied with electromagnetic and structural finite element simulations. A simple model is created for making comparison with the different pole numbers easier. Main dimensions of the machine are kept the same. Optimal solutions for various pole numbers are searched and discussed. It is shown that for lower pole numbers, the structure is electrically better, while for higher pole numbers, the structure is mechanically stronger against centrifugal forces. In addition, the optimal electromagnetic structures for each pole number are shown to be similar to the optimal mechanical structures. Electrically and mechanically critical areas are also shown to be almost the same. The optimized results are also compared to three manufactured prototypes. The obtained results demonstrate the feasibility of the construction and the design method. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5210164 [article] Optimal dovetail permanent magnet rotor solutions for various pole numbers [texte imprimé] / Kolehmainen, Jere, Auteur . - pp. 70 - 77. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 70 - 77 Mots-clés : Design  methodology  Electromagnetic  analysis  Optimization  methods  Permanent  magnet  machines  Rotating  machine  mechanical  factors  Structural  engineering  Synchronous  machines Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : A buried magnet rotor structure, which is supported only by permanent magnets, is proposed for medium-speed permanent magnet machines. Many design aspects of the dovetail-shaped rotor structure have been found. Various machine solutions, with pole numbers 6 to 14, are studied with electromagnetic and structural finite element simulations. A simple model is created for making comparison with the different pole numbers easier. Main dimensions of the machine are kept the same. Optimal solutions for various pole numbers are searched and discussed. It is shown that for lower pole numbers, the structure is electrically better, while for higher pole numbers, the structure is mechanically stronger against centrifugal forces. In addition, the optimal electromagnetic structures for each pole number are shown to be similar to the optimal mechanical structures. Electrically and mechanically critical areas are also shown to be almost the same. The optimized results are also compared to three manufactured prototypes. The obtained results demonstrate the feasibility of the construction and the design method. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5210164

Design, analysis, and control of a hybrid field-controlled axial-flux permanent-magnet motor / Aydin, Metin in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 78 - 87 Titre : Design, analysis, and control of a hybrid field-controlled axial-flux permanent-magnet motor Type de document : texte imprimé Auteurs : Aydin, Metin, Auteur ; Huang, Surong, Auteur ; Lipo, Thomas A., Auteur Article en page(s) : pp. 78 - 87 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Axial-flux  machines  Brushless  machines  Brushless  rotating  machines  Electric  machines  Finite-element  analysis  (FEA)  Finite-element  method  Permanent-magnet  (PM)  machines  PM  motor Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents the design, analysis, control, and experimental evaluation of an innovative field-controlled axial-flux surface-mounted permanent-magnet machine. Topology and design equations, as well as an optimized design study, are attained. The machine is investigated in detail using finite-element analysis, and a prototype machine is built. In order to evaluate the new axial flux machine topology, an experimental system setup is devised and discussed. The experimental results of the prototype machine and a comparison between the analysis and test results are also presented. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5196757 [article] Design, analysis, and control of a hybrid field-controlled axial-flux permanent-magnet motor [texte imprimé] / Aydin, Metin, Auteur ; Huang, Surong, Auteur ; Lipo, Thomas A., Auteur . - pp. 78 - 87. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 78 - 87 Mots-clés : Axial-flux  machines  Brushless  machines  Brushless  rotating  machines  Electric  machines  Finite-element  analysis  (FEA)  Finite-element  method  Permanent-magnet  (PM)  machines  PM  motor Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents the design, analysis, control, and experimental evaluation of an innovative field-controlled axial-flux surface-mounted permanent-magnet machine. Topology and design equations, as well as an optimized design study, are attained. The machine is investigated in detail using finite-element analysis, and a prototype machine is built. In order to evaluate the new axial flux machine topology, an experimental system setup is devised and discussed. The experimental results of the prototype machine and a comparison between the analysis and test results are also presented. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5196757

Design improvement of a single-phase brushless permanent magnet motor for small fan appliances / Andriollo, Mauro in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 88 - 95 Titre : Design improvement of a single-phase brushless permanent magnet motor for small fan appliances Type de document : texte imprimé Auteurs : Andriollo, Mauro, Auteur ; De Bortoli, Manuel, Auteur ; Martinelli, Giovanni, Auteur Article en page(s) : pp. 88 - 95 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Brushless  (BL)  machines  Electromagnetic  transient  analysis  Home  appliances  Permanent  magnet  (PM)  motors  Rotating  machine  transient  analysis Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : In this paper, an adaptation of a shaded pole motor operating as a single-phase brushless PM motor is studied. After properly designing the rotor PM ring to avoid demagnetization problems, a nonlinear mathematical model for performance assessment and design improvement is proposed. The calculation of the model parameters is carried out by 2-D FEM analyses suitably corrected to also take into account 3-D effects, mainly due to different stator and rotor lengths. The procedure implemented in a numerical code makes it possible to investigate significant design aspects and determine the mechanical characteristic related to motor configurations adopted for small fan appliances. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5247113 [article] Design improvement of a single-phase brushless permanent magnet motor for small fan appliances [texte imprimé] / Andriollo, Mauro, Auteur ; De Bortoli, Manuel, Auteur ; Martinelli, Giovanni, Auteur . - pp. 88 - 95. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 88 - 95 Mots-clés : Brushless  (BL)  machines  Electromagnetic  transient  analysis  Home  appliances  Permanent  magnet  (PM)  motors  Rotating  machine  transient  analysis Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : In this paper, an adaptation of a shaded pole motor operating as a single-phase brushless PM motor is studied. After properly designing the rotor PM ring to avoid demagnetization problems, a nonlinear mathematical model for performance assessment and design improvement is proposed. The calculation of the model parameters is carried out by 2-D FEM analyses suitably corrected to also take into account 3-D effects, mainly due to different stator and rotor lengths. The procedure implemented in a numerical code makes it possible to investigate significant design aspects and determine the mechanical characteristic related to motor configurations adopted for small fan appliances. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5247113

A new design of a submicropositioner utilizing electromagnetic actuators and flexure mechanism / Chen, Mei-Yung in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 96 - 106 Titre : A new design of a submicropositioner utilizing electromagnetic actuators and flexure mechanism Type de document : texte imprimé Auteurs : Chen, Mei-Yung, Auteur ; Huang, Hsuan-Han, Auteur ; Hung, Shao-Kang, Auteur Article en page(s) : pp. 96 - 106 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Adaptive  controoler  Electromagnetic  actuator  Fabry-Perot  interferometer  Modeling  Motion  control  Optical  sensor  Parallel  flexure  mechanism  Precision  positioner  Sliding  mode  controller  (SMC) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : In this paper, a novel XY-dimensional submicropositioner, including mechanism, control, and analysis, is successfully presented. The design of the submicropositioner utilizes a monolithic parallel flexure mechanism with built-in electromagnetic actuators and optical sensors to achieve the object of 3-DOF precise motion. From the provided experimental results, there are several main goals that have been achieved in this paper: (1) to integrate the electromagnetic actuator and the parallel flexure mechanism for planar positioning system; (2) to establish the mathematical modeling; (3) to develop an advanced adaptive sliding-mode controller; and (4) to perform extensive experiments to test the realistic performance. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5280209 [article] A new design of a submicropositioner utilizing electromagnetic actuators and flexure mechanism [texte imprimé] / Chen, Mei-Yung, Auteur ; Huang, Hsuan-Han, Auteur ; Hung, Shao-Kang, Auteur . - pp. 96 - 106. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 96 - 106 Mots-clés : Adaptive  controoler  Electromagnetic  actuator  Fabry-Perot  interferometer  Modeling  Motion  control  Optical  sensor  Parallel  flexure  mechanism  Precision  positioner  Sliding  mode  controller  (SMC) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : In this paper, a novel XY-dimensional submicropositioner, including mechanism, control, and analysis, is successfully presented. The design of the submicropositioner utilizes a monolithic parallel flexure mechanism with built-in electromagnetic actuators and optical sensors to achieve the object of 3-DOF precise motion. From the provided experimental results, there are several main goals that have been achieved in this paper: (1) to integrate the electromagnetic actuator and the parallel flexure mechanism for planar positioning system; (2) to establish the mathematical modeling; (3) to develop an advanced adaptive sliding-mode controller; and (4) to perform extensive experiments to test the realistic performance. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5280209

Fractional-slot concentrated-windings synchronous permanent magnet machines: opportunities and challenges / EL-Refaie, Ayman M. in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 107 - 121 Titre : Fractional-slot concentrated-windings synchronous permanent magnet machines: opportunities and challenges Type de document : texte imprimé Auteurs : EL-Refaie, Ayman M., Auteur Article en page(s) : pp. 107 - 121 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Concentrated  Distributed  Fractional  slot  Generators  Integral  slot  Machines  Motors  Permanent  magnet  (PM)  Synchronous  Windings Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Fractional-slot concentrated-winding (FSCW) synchronous permanent magnet (PM) machines have been gaining interest over the last few years. This is mainly due to the several advantages that this type of windings provides. These include high-power density, high efficiency, short end turns, high slot fill factor particularly when coupled with segmented stator structures, low cogging torque, flux-weakening capability, and fault tolerance. This paper is going to provide a thorough analysis of FSCW synchronous PM machines in terms of opportunities and challenges. This paper will cover the theory and design of FSCW synchronous PM machines, achieving high-power density, flux-weakening capability, comparison of single- versus double-layer windings, fault-tolerance rotor losses, parasitic effects, comparison of interior versus surface PM machines, and various types of machines. This paper will also provide a summary of the commercial applications that involve FSCW synchronous PM machines. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5229186 [article] Fractional-slot concentrated-windings synchronous permanent magnet machines: opportunities and challenges [texte imprimé] / EL-Refaie, Ayman M., Auteur . - pp. 107 - 121. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 107 - 121 Mots-clés : Concentrated  Distributed  Fractional  slot  Generators  Integral  slot  Machines  Motors  Permanent  magnet  (PM)  Synchronous  Windings Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Fractional-slot concentrated-winding (FSCW) synchronous permanent magnet (PM) machines have been gaining interest over the last few years. This is mainly due to the several advantages that this type of windings provides. These include high-power density, high efficiency, short end turns, high slot fill factor particularly when coupled with segmented stator structures, low cogging torque, flux-weakening capability, and fault tolerance. This paper is going to provide a thorough analysis of FSCW synchronous PM machines in terms of opportunities and challenges. This paper will cover the theory and design of FSCW synchronous PM machines, achieving high-power density, flux-weakening capability, comparison of single- versus double-layer windings, fault-tolerance rotor losses, parasitic effects, comparison of interior versus surface PM machines, and various types of machines. This paper will also provide a summary of the commercial applications that involve FSCW synchronous PM machines. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5229186

Analysis of negative-saliency permanent-magnet machines / Moncada, Roberto H. in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 122 - 127 Titre : Analysis of negative-saliency permanent-magnet machines Type de document : texte imprimé Auteurs : Moncada, Roberto H., Auteur ; Tapia, Juan A., Auteur ; Jahns, Thomas M., Auteur Article en page(s) : pp. 122 - 127 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Axial-flux  machines  Flux  control  Flux  weakening  (FW)  Inverse  saliency  Maximum  torque  per  amp  (MTPA)  Permanent-magnet  (PM)  machines  PM  motors  Vector  control Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : In this paper, a negative-saliency permanent-magnet (PM) synchronous machine analysis is presented. This particular saliency feature is achieved by replacing a portion of the magnet material by a soft iron piece over the rotor pole. In this manner, the d-axis inductance is increased, whereas the q-axis inductance is almost not affected, leading to the condition that Ld is higher than Lq (negative saliency) corresponding to the inverse condition of typical PM machines. An expression for the optimum pole configuration is derived. It is shown that, with appropriate control of the stator current based on the machine's saliency, the unfavorable effects of magnet reduction on torque production can be compensated. It is also shown that the machine saliency affects the location of the operating points when it operates under vector control. Finally, the theoretical analysis is validated with experimental results obtained from a prototype axial-flux PM machine that exhibits negative saliency. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5229193 [article] Analysis of negative-saliency permanent-magnet machines [texte imprimé] / Moncada, Roberto H., Auteur ; Tapia, Juan A., Auteur ; Jahns, Thomas M., Auteur . - pp. 122 - 127. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 122 - 127 Mots-clés : Axial-flux  machines  Flux  control  Flux  weakening  (FW)  Inverse  saliency  Maximum  torque  per  amp  (MTPA)  Permanent-magnet  (PM)  machines  PM  motors  Vector  control Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : In this paper, a negative-saliency permanent-magnet (PM) synchronous machine analysis is presented. This particular saliency feature is achieved by replacing a portion of the magnet material by a soft iron piece over the rotor pole. In this manner, the d-axis inductance is increased, whereas the q-axis inductance is almost not affected, leading to the condition that Ld is higher than Lq (negative saliency) corresponding to the inverse condition of typical PM machines. An expression for the optimum pole configuration is derived. It is shown that, with appropriate control of the stator current based on the machine's saliency, the unfavorable effects of magnet reduction on torque production can be compensated. It is also shown that the machine saliency affects the location of the operating points when it operates under vector control. Finally, the theoretical analysis is validated with experimental results obtained from a prototype axial-flux PM machine that exhibits negative saliency. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5229193

Axial-flux permanent-magnet generator for induction heating gensets / Caricchi, Federico in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 128 - 137 Titre : Axial-flux permanent-magnet generator for induction heating gensets Type de document : texte imprimé Auteurs : Caricchi, Federico, Auteur ; Maradei, Fransiscaromana, Auteur ; De Donato, Giulio, Auteur Article en page(s) : pp. 128 - 137 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Axial-flux  permanent-magnet  (AFPM)  generators  Eddy  currents  Finite  element  analysis  (FEA)  Induction  heating  Rotor  losses Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents a single-phase slotless axial-flux permanent-magnet synchronous machine for induction heating gensets. A full-scale prototype of the machine (110 kVA, 400 Hz, 690 A) has been designed and subsequently analyzed through finite element analysis (FEA). Induced current distributions in the permanent magnets and in the rotors have also been calculated through FEA, showing that the resulting losses are kept at bay due to the low armature reaction. An effective way of achieving regulation of the power transferred to the load has been analytically derived. The prototype has also been built, and experimental tests confirm the aforesaid analyses. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5196753 [article] Axial-flux permanent-magnet generator for induction heating gensets [texte imprimé] / Caricchi, Federico, Auteur ; Maradei, Fransiscaromana, Auteur ; De Donato, Giulio, Auteur . - pp. 128 - 137. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 128 - 137 Mots-clés : Axial-flux  permanent-magnet  (AFPM)  generators  Eddy  currents  Finite  element  analysis  (FEA)  Induction  heating  Rotor  losses Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents a single-phase slotless axial-flux permanent-magnet synchronous machine for induction heating gensets. A full-scale prototype of the machine (110 kVA, 400 Hz, 690 A) has been designed and subsequently analyzed through finite element analysis (FEA). Induced current distributions in the permanent magnets and in the rotors have also been calculated through FEA, showing that the resulting losses are kept at bay due to the low armature reaction. An effective way of achieving regulation of the power transferred to the load has been analytically derived. The prototype has also been built, and experimental tests confirm the aforesaid analyses. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5196753

Internal permanent magnet motor design for electric vehicle drive / Laskaris, Konstantinos I. in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 138 - 145 Titre : Internal permanent magnet motor design for electric vehicle drive Type de document : texte imprimé Auteurs : Laskaris, Konstantinos I., Auteur ; Kladas, Antonios G., Auteur Article en page(s) : pp. 138 - 145 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Finite  element  (FE)  methods  Geometry  optimization  Losses  Permanent  magnet  machines  Power  density  Wheel  motor Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Power compaction and high efficiency are two key advantages of permanent magnet motors. This paper proposes an enhanced internal permanent magnet motor that delivers high torque, power compaction, and exceptionally high efficiency in the same operation area. The advantage of the proposed scheme is the magnetic flux accumulation in the air gap, which allows much higher values of magnetic flux density, compared to a surface permanent magnet motor of the same size. The original contribution of this paper resides on the adopted motor configuration, enabling to efficiently utilize the energy stored in the permanent magnet and to provide total loss minimization at the most frequently used speed range. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5276860 [article] Internal permanent magnet motor design for electric vehicle drive [texte imprimé] / Laskaris, Konstantinos I., Auteur ; Kladas, Antonios G., Auteur . - pp. 138 - 145. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 138 - 145 Mots-clés : Finite  element  (FE)  methods  Geometry  optimization  Losses  Permanent  magnet  machines  Power  density  Wheel  motor Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Power compaction and high efficiency are two key advantages of permanent magnet motors. This paper proposes an enhanced internal permanent magnet motor that delivers high torque, power compaction, and exceptionally high efficiency in the same operation area. The advantage of the proposed scheme is the magnetic flux accumulation in the air gap, which allows much higher values of magnetic flux density, compared to a surface permanent magnet motor of the same size. The original contribution of this paper resides on the adopted motor configuration, enabling to efficiently utilize the energy stored in the permanent magnet and to provide total loss minimization at the most frequently used speed range. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5276860

Superconducting multistack inductor for synchronous motors using the diamagnetism property of bulk material / Moulin, Renaud in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 146 - 153 Titre : Superconducting multistack inductor for synchronous motors using the diamagnetism property of bulk material Type de document : texte imprimé Auteurs : Moulin, Renaud, Auteur ; Leveque, Jean, Auteur ; Durantay, Lionel, Auteur Article en page(s) : pp. 146 - 153 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Flux  density  concentration  High  magnetic  fields  High-temperature  superconductor  (HTS)  Liquid  helium  Superconducting  inductor  Superconducting  rotating  machines  Superconducting  shield  Three-dimensional  field  calculation Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : An original superconducting synchronous motor topology is presented. The inductor combines both bulk materials and wires to create an alternating magnetic field in the air gap of the motor. A prototype that uses NbTi superconducting wires and YBCO bulks has successfully been designed and constructed. Test results are presented. In the second part of this paper, the possibility of higher power motor is discussed. To do so, the active length needs to be increased. In this paper, a multistack structure is proposed, and computation results show the effectiveness of the suggested approach. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5299015 [article] Superconducting multistack inductor for synchronous motors using the diamagnetism property of bulk material [texte imprimé] / Moulin, Renaud, Auteur ; Leveque, Jean, Auteur ; Durantay, Lionel, Auteur . - pp. 146 - 153. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 146 - 153 Mots-clés : Flux  density  concentration  High  magnetic  fields  High-temperature  superconductor  (HTS)  Liquid  helium  Superconducting  inductor  Superconducting  rotating  machines  Superconducting  shield  Three-dimensional  field  calculation Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : An original superconducting synchronous motor topology is presented. The inductor combines both bulk materials and wires to create an alternating magnetic field in the air gap of the motor. A prototype that uses NbTi superconducting wires and YBCO bulks has successfully been designed and constructed. Test results are presented. In the second part of this paper, the possibility of higher power motor is discussed. To do so, the active length needs to be increased. In this paper, a multistack structure is proposed, and computation results show the effectiveness of the suggested approach. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5299015

Additional losses in the damper winding of large hydrogenerators at open-circuit and load conditions / Traxler-Samek, Georg in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 154 - 160 Titre : Additional losses in the damper winding of large hydrogenerators at open-circuit and load conditions Type de document : texte imprimé Auteurs : Traxler-Samek, Georg, Auteur ; Lugand, Thomas, Auteur ; Schwery, Alexander, Auteur Article en page(s) : pp. 154 - 160 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : AC  generators  AC  machines  Equivalent  circuits  Losses  Machine  windings  Synchronous  generators  Synchronous  machines  Windings Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Large salient-pole synchronous machines are typically equipped with a damper winding. At steady-state conditions, parasitic voltages are induced in the damper bars which lead to a current flow with associated power losses. This paper describes an analytical algorithm for the calculation of currents and corresponding losses in the damper winding. The presented method is based on an equivalent network of the damper winding containing all the bars of a repetitive section of the machine. The inductances are calculated with an air-gap permeance model. Contrary to similar existing approaches, the induced damper-bar voltages are computed using a numerical integration. This allows more precise results when it comes to higher harmonics. In order to validate the analytical computation, the results are compared with the results of 2-D transient finite-element studies and with a conventional analytical method based on the d-and q -axis equivalent circuits of the machine. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5166502 [article] Additional losses in the damper winding of large hydrogenerators at open-circuit and load conditions [texte imprimé] / Traxler-Samek, Georg, Auteur ; Lugand, Thomas, Auteur ; Schwery, Alexander, Auteur . - pp. 154 - 160. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 154 - 160 Mots-clés : AC  generators  AC  machines  Equivalent  circuits  Losses  Machine  windings  Synchronous  generators  Synchronous  machines  Windings Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Large salient-pole synchronous machines are typically equipped with a damper winding. At steady-state conditions, parasitic voltages are induced in the damper bars which lead to a current flow with associated power losses. This paper describes an analytical algorithm for the calculation of currents and corresponding losses in the damper winding. The presented method is based on an equivalent network of the damper winding containing all the bars of a repetitive section of the machine. The inductances are calculated with an air-gap permeance model. Contrary to similar existing approaches, the induced damper-bar voltages are computed using a numerical integration. This allows more precise results when it comes to higher harmonics. In order to validate the analytical computation, the results are compared with the results of 2-D transient finite-element studies and with a conventional analytical method based on the d-and q -axis equivalent circuits of the machine. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5166502

Estimation of iron losses in induction motors / Gmyrek, Zbigniew in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 161 - 171 Titre : Estimation of iron losses in induction motors : calculation method, results, and analysis Type de document : texte imprimé Auteurs : Gmyrek, Zbigniew, Auteur ; Boglietti, Aldo, Auteur ; Cavagnino, Andrea, Auteur Article en page(s) : pp. 161 - 171 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Finite  element  method  (FEM)  Induction  motors  Iron  losses  Pulsewidth  modulation  (PWM)  supply Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper intends to develop a more accurate approach for determining the no-load iron losses in pulse width modulation (PWM) inverter fed induction motors. The proposed method is validated by means of a prototype motor with a plastic rotor cage. The iron losses have been computed by the time-stepping finite element method, both with sinusoidal and PWM supply. The iron losses have then been estimated by adding up the contribution generated by orthogonal components of the flux density, as if the iron losses generated by these components were independent phenomena. The rotational hysteresis losses, as well as excess ones, have been calculated applying a correction factor based on experimental data. These factors are a function of the peak flux density and ellipticity of the B vector loci. Experimental validations are provided for several frequency and magnetic saturation values. In addition, this paper demonstrates the necessity to consider the harmonics initial phase in order to increase the accuracy in the iron loss prediction. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5067321 [article] Estimation of iron losses in induction motors : calculation method, results, and analysis [texte imprimé] / Gmyrek, Zbigniew, Auteur ; Boglietti, Aldo, Auteur ; Cavagnino, Andrea, Auteur . - pp. 161 - 171. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 161 - 171 Mots-clés : Finite  element  method  (FEM)  Induction  motors  Iron  losses  Pulsewidth  modulation  (PWM)  supply Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper intends to develop a more accurate approach for determining the no-load iron losses in pulse width modulation (PWM) inverter fed induction motors. The proposed method is validated by means of a prototype motor with a plastic rotor cage. The iron losses have been computed by the time-stepping finite element method, both with sinusoidal and PWM supply. The iron losses have then been estimated by adding up the contribution generated by orthogonal components of the flux density, as if the iron losses generated by these components were independent phenomena. The rotational hysteresis losses, as well as excess ones, have been calculated applying a correction factor based on experimental data. These factors are a function of the peak flux density and ellipticity of the B vector loci. Experimental validations are provided for several frequency and magnetic saturation values. In addition, this paper demonstrates the necessity to consider the harmonics initial phase in order to increase the accuracy in the iron loss prediction. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5067321

Cooling airflow, losses, and temperatures in large air-cooled synchronous machines / Traxler-Samek, Georg in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 172 - 180 Titre : Cooling airflow, losses, and temperatures in large air-cooled synchronous machines Type de document : texte imprimé Auteurs : Traxler-Samek, Georg, Auteur ; Zickermann, Richard, Auteur ; Schwery, Alexander, Auteur Article en page(s) : pp. 172 - 180 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Cooling  Hydroelectric  generators  Losses  Synchronous  generators  Synchronous  machines  Temperature Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : At steady-state operation, power losses cause a heating of rotating electrical machines. In air-cooled machines, these losses are evacuated by a forced cooling airflow through the active parts. When designing and optimizing such a machine, the design engineer must be able to get a full picture of the power losses, the cooling airflow, and the temperatures inside the active parts (e.g., core laminations, windings) and the periphery (e.g., winding overhangs). The aim of the designer is to fulfill the customer's requirements regarding the guaranteed temperatures. This paper presents a computation method, where the power loss, airflow, and temperature calculations for the world's largest air-cooled hydrogenerators are coupled in an iterative process. The new contribution of this paper is a calculation software developed by the authors. It includes a state-of-the-art loss computation, an automated airflow network, and a set of linked thermal networks. These computations result in a complete overview of the temperature gradients and allow fine tuning of the cooling airflow and, consequently, optimization of ventilation losses. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5229207 [article] Cooling airflow, losses, and temperatures in large air-cooled synchronous machines [texte imprimé] / Traxler-Samek, Georg, Auteur ; Zickermann, Richard, Auteur ; Schwery, Alexander, Auteur . - pp. 172 - 180. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 172 - 180 Mots-clés : Cooling  Hydroelectric  generators  Losses  Synchronous  generators  Synchronous  machines  Temperature Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : At steady-state operation, power losses cause a heating of rotating electrical machines. In air-cooled machines, these losses are evacuated by a forced cooling airflow through the active parts. When designing and optimizing such a machine, the design engineer must be able to get a full picture of the power losses, the cooling airflow, and the temperatures inside the active parts (e.g., core laminations, windings) and the periphery (e.g., winding overhangs). The aim of the designer is to fulfill the customer's requirements regarding the guaranteed temperatures. This paper presents a computation method, where the power loss, airflow, and temperature calculations for the world's largest air-cooled hydrogenerators are coupled in an iterative process. The new contribution of this paper is a calculation software developed by the authors. It includes a state-of-the-art loss computation, an automated airflow network, and a set of linked thermal networks. These computations result in a complete overview of the temperature gradients and allow fine tuning of the cooling airflow and, consequently, optimization of ventilation losses. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5229207

Performance analysis of aluminum- and copper-rotor induction generators considering skin and thermal effects / Hafiz, Khurshid in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 181 - 192 Titre : Performance analysis of aluminum- and copper-rotor induction generators considering skin and thermal effects Type de document : texte imprimé Auteurs : Hafiz, Khurshid, Auteur ; Nanda, Gaurav, Auteur ; Kar, Narayan C., Auteur Article en page(s) : pp. 181 - 192 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Aluminum  rotor  Copper  rotor  Performance  analysis  Self-excited  induction  generator  (SEIG)  Skin  effect  Thermal  effect Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Recent progress in wind-power generation has led to the use of grid-connected and self-excited induction generators (SEIGs). Aluminum has been the common conductor material for squirrel-cage induction machines for a long time, largely because of low cost and ease of manufacturing. Recent developments in materials engineering have brought forth copper-rotor induction machines with promising results. In these machines, skin effect as well as temperature effect on the machine equivalent-circuit parameters during operation are expected to play an important role in the evaluation of induction-machine performance. In this paper, a qualitative performance analysis of aluminum- and copper-rotor SEIGs considering the skin and thermal effects has been presented theoretically and experimentally. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5291792 [article] Performance analysis of aluminum- and copper-rotor induction generators considering skin and thermal effects [texte imprimé] / Hafiz, Khurshid, Auteur ; Nanda, Gaurav, Auteur ; Kar, Narayan C., Auteur . - pp. 181 - 192. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 181 - 192 Mots-clés : Aluminum  rotor  Copper  rotor  Performance  analysis  Self-excited  induction  generator  (SEIG)  Skin  effect  Thermal  effect Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Recent progress in wind-power generation has led to the use of grid-connected and self-excited induction generators (SEIGs). Aluminum has been the common conductor material for squirrel-cage induction machines for a long time, largely because of low cost and ease of manufacturing. Recent developments in materials engineering have brought forth copper-rotor induction machines with promising results. In these machines, skin effect as well as temperature effect on the machine equivalent-circuit parameters during operation are expected to play an important role in the evaluation of induction-machine performance. In this paper, a qualitative performance analysis of aluminum- and copper-rotor SEIGs considering the skin and thermal effects has been presented theoretically and experimentally. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5291792

Harmonic impact on distribution transformer no-load loss / Kefalas, Themistoklis D. in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 193 - 200 Titre : Harmonic impact on distribution transformer no-load loss Type de document : texte imprimé Auteurs : Kefalas, Themistoklis D., Auteur ; Kladas, Antonios G., Auteur Article en page(s) : pp. 193 - 200 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Finite  element  methods  Industrial  power  system  harmonics  Magnetic  anisotropy  Magnetic  cores  Magnetic  hysteresis  Magentic  losses  Nonlinear  magnetics  Power  transformers  Soft  magnetic  materials  Transient  analysis Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : The losses in European Union distribution transformers are estimated at about 33 TW ·h/year, whereas reactive power and harmonic losses add a further 5 TW ·h/year. The reduction of distribution transformer no-load loss is particularly important as the ratio of no-load to load losses is nearly three. In this paper, the no-load operation of wound-core transformers under sinusoidal and distorted supply-voltage conditions is investigated. For that purpose, a 2-D nonlinear transient finite-element analysis taking into account hysteresis has been developed. The hysteresis model is based on a modified Jiles-Atherton representation, and the proposed analysis is compared to experimental data. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5229158 [article] Harmonic impact on distribution transformer no-load loss [texte imprimé] / Kefalas, Themistoklis D., Auteur ; Kladas, Antonios G., Auteur . - pp. 193 - 200. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 193 - 200 Mots-clés : Finite  element  methods  Industrial  power  system  harmonics  Magnetic  anisotropy  Magnetic  cores  Magnetic  hysteresis  Magentic  losses  Nonlinear  magnetics  Power  transformers  Soft  magnetic  materials  Transient  analysis Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : The losses in European Union distribution transformers are estimated at about 33 TW ·h/year, whereas reactive power and harmonic losses add a further 5 TW ·h/year. The reduction of distribution transformer no-load loss is particularly important as the ratio of no-load to load losses is nearly three. In this paper, the no-load operation of wound-core transformers under sinusoidal and distorted supply-voltage conditions is investigated. For that purpose, a 2-D nonlinear transient finite-element analysis taking into account hysteresis has been developed. The hysteresis model is based on a modified Jiles-Atherton representation, and the proposed analysis is compared to experimental data. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5229158

Performance analysis and thermal modeling of a high-energy-density prebiased inductor / Wrobel, Rafal in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 201 - 208 Titre : Performance analysis and thermal modeling of a high-energy-density prebiased inductor Type de document : texte imprimé Auteurs : Wrobel, Rafal, Auteur ; McNeill, Neville, Auteur ; Mellor, Phil H., Auteur Article en page(s) : pp. 201 - 208 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : High-energy-density  inductor  Loss  separation  Thermal  analysis Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents a methodology for analyzing the thermal performance of compact planar wound components. A high-energy-density prebiased choke is used to demonstrate and validate the proposed approach. Loss predictions from electromagnetic finite-element analyses are coupled to an equivalent lumped-circuit thermal model and used to determine the operating thermal envelope for the wound component. Results from the proposed method are directly compared with test measurements taken from the prototype choke and are shown to be in good agreement. A sensitivity analysis indicates that copper loss is the dominant component in such devices and that AC resistance effects are more prominent than core loss. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5208398 [article] Performance analysis and thermal modeling of a high-energy-density prebiased inductor [texte imprimé] / Wrobel, Rafal, Auteur ; McNeill, Neville, Auteur ; Mellor, Phil H., Auteur . - pp. 201 - 208. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 201 - 208 Mots-clés : High-energy-density  inductor  Loss  separation  Thermal  analysis Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents a methodology for analyzing the thermal performance of compact planar wound components. A high-energy-density prebiased choke is used to demonstrate and validate the proposed approach. Loss predictions from electromagnetic finite-element analyses are coupled to an equivalent lumped-circuit thermal model and used to determine the operating thermal envelope for the wound component. Results from the proposed method are directly compared with test measurements taken from the prototype choke and are shown to be in good agreement. A sensitivity analysis indicates that copper loss is the dominant component in such devices and that AC resistance effects are more prominent than core loss. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5208398

Torsional vibration assessment using induction machine electromagnetic torque estimation / Kia, Shahin Hedayati in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 209 - 219 Titre : Torsional vibration assessment using induction machine electromagnetic torque estimation Type de document : texte imprimé Auteurs : Kia, Shahin Hedayati, Auteur ; Henao, Humberto, Auteur ; Capolino, Gérard-André, Auteur Article en page(s) : pp. 209 - 219 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Condition  monitoring  Current  measurement  Frequency  domain  analysis  Frequency  tracking  Gearbox-based  system  Induction  machine  Mechanical  stresses  Mechanical  systems  Motor  current  signature  analysis  Torque  estimation  Torque  oscillation  Torsional  vibration Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Mechanical anomalies such as load troubles, great torque dynamic variations, and torsional oscillations result in the shaft fatigue of electrical machine and other mechanical parts such as bearings and gearboxes. Particularly, the torsional vibration may attain a significant level at resonant frequencies which damage or cause additional lifetime consumption of mechanical parts. In this way, this paper proposes a noninvasive technique through the electromagnetic torque estimation of driving induction machine as a mean of mechanical torsional stresses monitoring. The lubrication loss is considered as a gear failure to demonstrate its influence on the vibration and on the electromagnetic estimated torque signatures. Then, it is shown that the information in the electromagnetic torque can be decomposed into high- and low-frequency bandwidths which are associated to induction machine and gearbox mechanical-related frequencies, respectively. A setup based on a 5.5-kW three-phase squirrel-cage induction motor connected to a 4-kW wound-rotor induction generator via a one-stage gearbox has been used to validate the proposed method in both stationary and nonstationary conditions. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5291794 [article] Torsional vibration assessment using induction machine electromagnetic torque estimation [texte imprimé] / Kia, Shahin Hedayati, Auteur ; Henao, Humberto, Auteur ; Capolino, Gérard-André, Auteur . - pp. 209 - 219. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 209 - 219 Mots-clés : Condition  monitoring  Current  measurement  Frequency  domain  analysis  Frequency  tracking  Gearbox-based  system  Induction  machine  Mechanical  stresses  Mechanical  systems  Motor  current  signature  analysis  Torque  estimation  Torque  oscillation  Torsional  vibration Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Mechanical anomalies such as load troubles, great torque dynamic variations, and torsional oscillations result in the shaft fatigue of electrical machine and other mechanical parts such as bearings and gearboxes. Particularly, the torsional vibration may attain a significant level at resonant frequencies which damage or cause additional lifetime consumption of mechanical parts. In this way, this paper proposes a noninvasive technique through the electromagnetic torque estimation of driving induction machine as a mean of mechanical torsional stresses monitoring. The lubrication loss is considered as a gear failure to demonstrate its influence on the vibration and on the electromagnetic estimated torque signatures. Then, it is shown that the information in the electromagnetic torque can be decomposed into high- and low-frequency bandwidths which are associated to induction machine and gearbox mechanical-related frequencies, respectively. A setup based on a 5.5-kW three-phase squirrel-cage induction motor connected to a 4-kW wound-rotor induction generator via a one-stage gearbox has been used to validate the proposed method in both stationary and nonstationary conditions. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5291794

On the speed limits of permanent-magnet machines / Borisavljevic, Alexandar in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 220 - 227 Titre : On the speed limits of permanent-magnet machines Type de document : texte imprimé Auteurs : Borisavljevic, Alexandar, Auteur ; Polinder, Henk, Auteur ; Ferreira, Jan Abraham, Auteur Article en page(s) : pp. 220 - 227 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : High-speed  machines  Machine  design  Machine  limits  Mechanical  stress  Permanent-magnet  (PM)  machines  Rotor  dynamics Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Permanent-magnet (PM) machines are considered the most suitable machine type for very high speed applications. Still, due to the growing demand for the ever higher rotational speeds, PM machines are approaching their limits. The focus of this paper is the different factors that lie behind the inherent speed limitations of PM machines. The limits-thermal, elastic, and rotor dynamical-are defined, classified, and correlated to basic machine parameters. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5226559 [article] On the speed limits of permanent-magnet machines [texte imprimé] / Borisavljevic, Alexandar, Auteur ; Polinder, Henk, Auteur ; Ferreira, Jan Abraham, Auteur . - pp. 220 - 227. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 220 - 227 Mots-clés : High-speed  machines  Machine  design  Machine  limits  Mechanical  stress  Permanent-magnet  (PM)  machines  Rotor  dynamics Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Permanent-magnet (PM) machines are considered the most suitable machine type for very high speed applications. Still, due to the growing demand for the ever higher rotational speeds, PM machines are approaching their limits. The focus of this paper is the different factors that lie behind the inherent speed limitations of PM machines. The limits-thermal, elastic, and rotor dynamical-are defined, classified, and correlated to basic machine parameters. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5226559

Reducing acoustic noise radiated by inverter-fed induction motors controlled by a new PWM strategy / Ruiz-Gonzalez, A. in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 228 - 236 Titre : Reducing acoustic noise radiated by inverter-fed induction motors controlled by a new PWM strategy Type de document : texte imprimé Auteurs : Ruiz-Gonzalez, A., Auteur ; Meco-Gutierrez, M. J., Auteur ; Perez-Hidalgo, F., Auteur Article en page(s) : pp. 228 - 236 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Acoustic  noise  Acoustic  noise  measurement  Converter  Frequency  control  Frequency  modulation  Harmonic  analysis  Harmonic  distorsion  Induction  motor  drives  Magnetic  force  Noise  spectrum  Pulsewidth  modulation  (PWM)  power  controller Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents a new application of a control strategy to reduce the acoustic noise caused by pulsewidth-modulation (PWM)-controlled induction machine drives. The proposed strategy is based on a frequency modulation of the triangular carrier through a sinusoidal signal. It is used to decrease the acoustic noise and to achieve a reduction in the total harmonic distortion. The main advantage of the proposed method is that only one control parameter is necessary to modify the electrical spectrum, and so, mechanical natural frequencies are avoided while the number of pulses per period remains unchanged. The results obtained in laboratory tests are presented and compared to other acoustic measurements using different PWM strategies. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5229319 [article] Reducing acoustic noise radiated by inverter-fed induction motors controlled by a new PWM strategy [texte imprimé] / Ruiz-Gonzalez, A., Auteur ; Meco-Gutierrez, M. J., Auteur ; Perez-Hidalgo, F., Auteur . - pp. 228 - 236. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 228 - 236 Mots-clés : Acoustic  noise  Acoustic  noise  measurement  Converter  Frequency  control  Frequency  modulation  Harmonic  analysis  Harmonic  distorsion  Induction  motor  drives  Magnetic  force  Noise  spectrum  Pulsewidth  modulation  (PWM)  power  controller Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents a new application of a control strategy to reduce the acoustic noise caused by pulsewidth-modulation (PWM)-controlled induction machine drives. The proposed strategy is based on a frequency modulation of the triangular carrier through a sinusoidal signal. It is used to decrease the acoustic noise and to achieve a reduction in the total harmonic distortion. The main advantage of the proposed method is that only one control parameter is necessary to modify the electrical spectrum, and so, mechanical natural frequencies are avoided while the number of pulses per period remains unchanged. The results obtained in laboratory tests are presented and compared to other acoustic measurements using different PWM strategies. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5229319

Stator-interlaminar-fault detection using an external-flux-density sensor / Romary, Raphael in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 237 - 243 Titre : Stator-interlaminar-fault detection using an external-flux-density sensor Type de document : texte imprimé Auteurs : Romary, Raphael, Auteur ; Jelassi, Sana, Auteur ; Brudny, Jean François, Auteur Article en page(s) : pp. 237 - 243 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : AC  generators  Fault  diagnosis  Insulation  testing  Magnetic-field  measurement  Maintenance Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents the results of a research work devoted to the detection of short circuits between stator laminations of an electrical machine using external magnetic field. The theoretical developments lead one to display the influence of various phenomena on this magnetic field in a wide frequency range. It is shown that surface currents due to burrs at the external surface of the machine have an important contribution compared to the increase of eddy currents in the short-circuit volume. Finally, experimental measurements confirm this theory, and an online method of detection for large generators is proposed. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5208383 [article] Stator-interlaminar-fault detection using an external-flux-density sensor [texte imprimé] / Romary, Raphael, Auteur ; Jelassi, Sana, Auteur ; Brudny, Jean François, Auteur . - pp. 237 - 243. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 237 - 243 Mots-clés : AC  generators  Fault  diagnosis  Insulation  testing  Magnetic-field  measurement  Maintenance Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents the results of a research work devoted to the detection of short circuits between stator laminations of an electrical machine using external magnetic field. The theoretical developments lead one to display the influence of various phenomena on this magnetic field in a wide frequency range. It is shown that surface currents due to burrs at the external surface of the machine have an important contribution compared to the increase of eddy currents in the short-circuit volume. Finally, experimental measurements confirm this theory, and an online method of detection for large generators is proposed. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5208383

Stator current and motor efficiency as indicators for different types of bearing faults in induction motors / Frosini, Lucia in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 244 - 251 Titre : Stator current and motor efficiency as indicators for different types of bearing faults in induction motors Type de document : texte imprimé Auteurs : Frosini, Lucia, Auteur ; Bassi, Ezio, Auteur Article en page(s) : pp. 244 - 251 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Bearings  Condition  monitoring  Efficiency  Fault  diagnosis  Fourier  transforms  Induction  motors  Industrial-power-system  maintenance  Motor-current  signature  analysis  Spectral  analysis  Vibration Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper proposes a new approach to use stator current and efficiency of induction motors as indicators of rolling-bearing faults. After a presentation of the state of the art about condition monitoring of vibration and motor current for the diagnostics of bearings, this paper illustrates the experimental results on four different types of bearing defects: crack in the outer race, hole in the outer race, deformation of the seal, and corrosion. The first and third faults have not been previously considered in the literature, with the latter being analyzed in other research works, even if obtained in a different way. Another novelty introduced by this paper is the analysis of the decrease in efficiency of the motor with a double purpose: as alarm of incipient faults and as evaluation of the extent of energy waste resulting from the lasting of the fault condition before the breakdown of the machine. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5166499 [article] Stator current and motor efficiency as indicators for different types of bearing faults in induction motors [texte imprimé] / Frosini, Lucia, Auteur ; Bassi, Ezio, Auteur . - pp. 244 - 251. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 244 - 251 Mots-clés : Bearings  Condition  monitoring  Efficiency  Fault  diagnosis  Fourier  transforms  Induction  motors  Industrial-power-system  maintenance  Motor-current  signature  analysis  Spectral  analysis  Vibration Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper proposes a new approach to use stator current and efficiency of induction motors as indicators of rolling-bearing faults. After a presentation of the state of the art about condition monitoring of vibration and motor current for the diagnostics of bearings, this paper illustrates the experimental results on four different types of bearing defects: crack in the outer race, hole in the outer race, deformation of the seal, and corrosion. The first and third faults have not been previously considered in the literature, with the latter being analyzed in other research works, even if obtained in a different way. Another novelty introduced by this paper is the analysis of the decrease in efficiency of the motor with a double purpose: as alarm of incipient faults and as evaluation of the extent of energy waste resulting from the lasting of the fault condition before the breakdown of the machine. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5166499

Practical aspects of mixed-eccentricity detection in PWM voltage-source-inverter-fed induction motors / Morinigo-Sotelo, Daniel in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 252 - 262 Titre : Practical aspects of mixed-eccentricity detection in PWM voltage-source-inverter-fed induction motors Type de document : texte imprimé Auteurs : Morinigo-Sotelo, Daniel, Auteur ; Garcia-Escudero, L. A., Auteur ; Duque-Perez, Oscar, Auteur Article en page(s) : pp. 252 - 262 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Eccentricity  Fault  diagnosis  Induction  motor  drives  Inverters  Maintenance  Monitoring  Spectral  analysis Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : In this paper, we present the results of an ongoing investigation relating to the detection of static and dynamic eccentricity in cage induction motors fed by a pulsewidth-modulation frequency converter using line-current spectral analysis. Two different motors fed by different supply sources (utility voltage and two different voltage converters at different assigned frequencies) were tested. A statistical analysis of the results obtained was carried out. These results allow us to present practical conclusions relating to the detection of mixed eccentricity. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5071290 [article] Practical aspects of mixed-eccentricity detection in PWM voltage-source-inverter-fed induction motors [texte imprimé] / Morinigo-Sotelo, Daniel, Auteur ; Garcia-Escudero, L. A., Auteur ; Duque-Perez, Oscar, Auteur . - pp. 252 - 262. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 252 - 262 Mots-clés : Eccentricity  Fault  diagnosis  Induction  motor  drives  Inverters  Maintenance  Monitoring  Spectral  analysis Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : In this paper, we present the results of an ongoing investigation relating to the detection of static and dynamic eccentricity in cage induction motors fed by a pulsewidth-modulation frequency converter using line-current spectral analysis. Two different motors fed by different supply sources (utility voltage and two different voltage converters at different assigned frequencies) were tested. A statistical analysis of the results obtained was carried out. These results allow us to present practical conclusions relating to the detection of mixed eccentricity. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5071290

Cost-effective condition monitoring for wind turbines / Wenxian, Yang in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 263 - 271 Titre : Cost-effective condition monitoring for wind turbines Type de document : texte imprimé Auteurs : Wenxian, Yang, Auteur ; Tavner, Peter J., Auteur ; Crabtree, Christopher J., Auteur Article en page(s) : pp. 263 - 271 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Adaptive  signal  processing  Condition  monitoring  Fault  diagnosis  Induction  generators  Signal  processing  Synchronous  generators  Time-frequency  analysis  Wavelet  transforms  Wind  power  generation Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Cost-effective wind turbine (WT) condition monitoring assumes more importance as turbine sizes increase and they are placed in more remote locations, for example, offshore. Conventional condition monitoring techniques, such as vibration, lubrication oil, and generator current signal analysis, require the deployment of a variety of sensors and computationally intensive analysis techniques. This paper describes a WT condition monitoring technique that uses the generator output power and rotational speed to derive a fault detection signal. The detection algorithm uses a continuous-wavelet-transform-based adaptive filter to track the energy in the prescribed time-varying fault-related frequency bands in the power signal. The central frequency of the filter is controlled by the generator speed, and the filter bandwidth is adapted to the speed fluctuation. Using this technique, fault features can be extracted, with low calculation times, from direct- or indirect-drive fixed- or variable-speed WTs. The proposed technique has been validated experimentally on a WT drive train test rig. A synchronous or induction generator was successively installed on the test rig, and both mechanical and electrical fault like perturbations were successfully detected when applied to the test rig. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5256318 [article] Cost-effective condition monitoring for wind turbines [texte imprimé] / Wenxian, Yang, Auteur ; Tavner, Peter J., Auteur ; Crabtree, Christopher J., Auteur . - pp. 263 - 271. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 263 - 271 Mots-clés : Adaptive  signal  processing  Condition  monitoring  Fault  diagnosis  Induction  generators  Signal  processing  Synchronous  generators  Time-frequency  analysis  Wavelet  transforms  Wind  power  generation Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Cost-effective wind turbine (WT) condition monitoring assumes more importance as turbine sizes increase and they are placed in more remote locations, for example, offshore. Conventional condition monitoring techniques, such as vibration, lubrication oil, and generator current signal analysis, require the deployment of a variety of sensors and computationally intensive analysis techniques. This paper describes a WT condition monitoring technique that uses the generator output power and rotational speed to derive a fault detection signal. The detection algorithm uses a continuous-wavelet-transform-based adaptive filter to track the energy in the prescribed time-varying fault-related frequency bands in the power signal. The central frequency of the filter is controlled by the generator speed, and the filter bandwidth is adapted to the speed fluctuation. Using this technique, fault features can be extracted, with low calculation times, from direct- or indirect-drive fixed- or variable-speed WTs. The proposed technique has been validated experimentally on a WT drive train test rig. A synchronous or induction generator was successively installed on the test rig, and both mechanical and electrical fault like perturbations were successfully detected when applied to the test rig. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5256318

High-speed high-output solid-rotor induction-motor technology for gas compression / Pyrhonen, Juha in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 272 - 280 Titre : High-speed high-output solid-rotor induction-motor technology for gas compression Type de document : texte imprimé Auteurs : Pyrhonen, Juha, Auteur ; Nerg, Janne, Auteur ; Kurronen, Panu, Auteur Article en page(s) : pp. 272 - 280 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : AC  machines  AC  motor  drives  High-speed  machine  Induction  motor  drives  Induction  motors  Numerical  analysis  Rotor  materials  Rotor  sliding  Solid  rotor  Solid-rotor  end  effect Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper investigates the suitability of solid-rotor induction-motor technology for a natural-gas-compression application with a high power output. To this end, a new solid-rotor design for an 8-MW 6.6-kV 12 000-min-1 motor without any copper parts in the rotor was developed, and the motor performance was tested. In this paper, solid-rotor material selection, rotor slitting, and the end effects of the purely solid rotor are discussed. A frequency-dependent end-effect correction factor is introduced, and a method for the rotor-end-leakage correction is presented. The performance of the proposed end-effect correction factor is verified by comparing the calculated torque and power factor with the measured values. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=4895247 [article] High-speed high-output solid-rotor induction-motor technology for gas compression [texte imprimé] / Pyrhonen, Juha, Auteur ; Nerg, Janne, Auteur ; Kurronen, Panu, Auteur . - pp. 272 - 280. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 272 - 280 Mots-clés : AC  machines  AC  motor  drives  High-speed  machine  Induction  motor  drives  Induction  motors  Numerical  analysis  Rotor  materials  Rotor  sliding  Solid  rotor  Solid-rotor  end  effect Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper investigates the suitability of solid-rotor induction-motor technology for a natural-gas-compression application with a high power output. To this end, a new solid-rotor design for an 8-MW 6.6-kV 12 000-min-1 motor without any copper parts in the rotor was developed, and the motor performance was tested. In this paper, solid-rotor material selection, rotor slitting, and the end effects of the purely solid rotor are discussed. A frequency-dependent end-effect correction factor is introduced, and a method for the rotor-end-leakage correction is presented. The performance of the proposed end-effect correction factor is verified by comparing the calculated torque and power factor with the measured values. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=4895247

Identification of lamination stack properties / Mogenier, Guillaume in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 281 - 287 Titre : Identification of lamination stack properties Titre original : application to high-speed induction motors Type de document : texte imprimé Auteurs : Mogenier, Guillaume, Auteur ; Dufour, Régis, Auteur ; Ferraris-Besso, Guy, Auteur Article en page(s) : pp. 281 - 287 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Finite-element  (FE)  methods  Parameter  identification  Squirrel-cage  motors  Vibration Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : In order to predict the lateral rotordynamics of a high-speed induction motor, an optimization procedure is used for identifying the dynamic behavior of the magnetic core made of a lamination stack, tie rods, and short-circuit rods. Modal parameters predicted by a finite-element model based on beam elements and measured on induction motors are included in modal error functions contained in a functional. The minimization of this functional by using the Levenberg-Marquardt algorithm permits extracting the equivalent constitutive properties of the lamination stack for several rotors of different sizes. Finally, the size effect on the constitutive properties identified is discussed. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5208347 [article] Identification of lamination stack properties = application to high-speed induction motors [texte imprimé] / Mogenier, Guillaume, Auteur ; Dufour, Régis, Auteur ; Ferraris-Besso, Guy, Auteur . - pp. 281 - 287. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 281 - 287 Mots-clés : Finite-element  (FE)  methods  Parameter  identification  Squirrel-cage  motors  Vibration Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : In order to predict the lateral rotordynamics of a high-speed induction motor, an optimization procedure is used for identifying the dynamic behavior of the magnetic core made of a lamination stack, tie rods, and short-circuit rods. Modal parameters predicted by a finite-element model based on beam elements and measured on induction motors are included in modal error functions contained in a functional. The minimization of this functional by using the Levenberg-Marquardt algorithm permits extracting the equivalent constitutive properties of the lamination stack for several rotors of different sizes. Finally, the size effect on the constitutive properties identified is discussed. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5208347

Optimized design of high-speed induction motors in respect of the electrical steel grade / Centner, Matthias in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 288 - 295 Titre : Optimized design of high-speed induction motors in respect of the electrical steel grade Type de document : texte imprimé Auteurs : Centner, Matthias, Auteur ; Schafer, Uwe, Auteur Article en page(s) : pp. 288 - 295 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : AC  motor  drives  Electric-variable  measurement  Finite-element  (FE)  methods  High-speed  machines  Induction  machines  (IMs)  Loss  measurement  Numerical  analysis  Rotating-machine  nonlinear  analysis  Soft  magnetic  materials  Variable-speed  drives Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents the design of highly efficient high-speed induction motors with optimally exploited magnetic materials. First, new combined numerical-analytical design methods are presented and validated, which closely relate to the classical way of machine design but allow the designer to precisely account for material properties. Second, it is shown how two optimized 20-kW 30 000-r/min induction machines have been realized, i.e., one incorporating cobalt-iron alloy, and the other one using siliconized steel. Finally, the influence of the electrical steel grade on their performance is evaluated on the basis of electrical, thermal, vibrational, and noise measurements. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5208315 [article] Optimized design of high-speed induction motors in respect of the electrical steel grade [texte imprimé] / Centner, Matthias, Auteur ; Schafer, Uwe, Auteur . - pp. 288 - 295. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 288 - 295 Mots-clés : AC  motor  drives  Electric-variable  measurement  Finite-element  (FE)  methods  High-speed  machines  Induction  machines  (IMs)  Loss  measurement  Numerical  analysis  Rotating-machine  nonlinear  analysis  Soft  magnetic  materials  Variable-speed  drives Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents the design of highly efficient high-speed induction motors with optimally exploited magnetic materials. First, new combined numerical-analytical design methods are presented and validated, which closely relate to the classical way of machine design but allow the designer to precisely account for material properties. Second, it is shown how two optimized 20-kW 30 000-r/min induction machines have been realized, i.e., one incorporating cobalt-iron alloy, and the other one using siliconized steel. Finally, the influence of the electrical steel grade on their performance is evaluated on the basis of electrical, thermal, vibrational, and noise measurements. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5208315

Very-high-speed slotless permanent-magnet motors / Pfister, Pierre-Daniel in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 296 - 303 Titre : Very-high-speed slotless permanent-magnet motors : analytical modeling, optimization, design, and torque measurement methods Type de document : texte imprimé Auteurs : Pfister, Pierre-Daniel, Auteur ; Perriard, Yves, Auteur Article en page(s) : pp. 296 - 303 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Analytical  model  Ball  bearing  Inertia  Optimization  Permanent-magnet  (PM)  machine  Retaining  sleeve  Slotless  machine  Synchronous  machine  Torque  measurement  methods  Very-high-speed  (VHS)  motors Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents a very-high-speed (VHS) slotless permanent-magnet motor design procedure using an analytical model. The model is used to design the optimal prototype (target: 200 kr/min, 2 kW). The multiphysics analytical model allows a quick optimization process. The presented model includes the magnetic fields, the mechanical stresses in the rotor, the electromagnetic power losses, the windage power losses, and the power losses in the bearings. VHS machines need a new torque measurement method. This paper presents the developed method. It also presents a ball bearing friction torque measurement method designed particularly for VHS machines. Remarkably, the method allowed us to design a prototype which operates beyond the target of speed and power. The results given by the model are compared with the measurements of the prototype. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5175337 [article] Very-high-speed slotless permanent-magnet motors : analytical modeling, optimization, design, and torque measurement methods [texte imprimé] / Pfister, Pierre-Daniel, Auteur ; Perriard, Yves, Auteur . - pp. 296 - 303. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 296 - 303 Mots-clés : Analytical  model  Ball  bearing  Inertia  Optimization  Permanent-magnet  (PM)  machine  Retaining  sleeve  Slotless  machine  Synchronous  machine  Torque  measurement  methods  Very-high-speed  (VHS)  motors Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents a very-high-speed (VHS) slotless permanent-magnet motor design procedure using an analytical model. The model is used to design the optimal prototype (target: 200 kr/min, 2 kW). The multiphysics analytical model allows a quick optimization process. The presented model includes the magnetic fields, the mechanical stresses in the rotor, the electromagnetic power losses, the windage power losses, and the power losses in the bearings. VHS machines need a new torque measurement method. This paper presents the developed method. It also presents a ball bearing friction torque measurement method designed particularly for VHS machines. Remarkably, the method allowed us to design a prototype which operates beyond the target of speed and power. The results given by the model are compared with the measurements of the prototype. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5175337

Experimental determination of equivalent-circuit parameters of a tubular switched reluctance machine with solid-steel magnetic core / Corda, Jasmin in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 304 - 310 Titre : Experimental determination of equivalent-circuit parameters of a tubular switched reluctance machine with solid-steel magnetic core Type de document : texte imprimé Auteurs : Corda, Jasmin, Auteur ; Jamil, Shabbir M., Auteur Article en page(s) : pp. 304 - 310 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Eddy  currents  Inductance  measurement  Loss  measurement  Losses  Magnetic  cores  Magnetic  variable  measurement  Modeling  Reluctance  machines  Reluctance  motors Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : The model-based analysis of a switched reluctance machine, which has significant losses in the iron core, requires the machine to be represented by parameters that account for nonlinearities caused by both the magnetic saturation and the iron losses. This paper describes the methodology for determining the parameters of the equivalent electric circuit that includes the representation of iron losses. The parameters are derived from measurements performed under static conditions. The methodology is verified by comparing the dynamically measured results for the pull-out force against the results predicted by the model that is based on the equivalent circuit. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5166489 [article] Experimental determination of equivalent-circuit parameters of a tubular switched reluctance machine with solid-steel magnetic core [texte imprimé] / Corda, Jasmin, Auteur ; Jamil, Shabbir M., Auteur . - pp. 304 - 310. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 304 - 310 Mots-clés : Eddy  currents  Inductance  measurement  Loss  measurement  Losses  Magnetic  cores  Magnetic  variable  measurement  Modeling  Reluctance  machines  Reluctance  motors Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : The model-based analysis of a switched reluctance machine, which has significant losses in the iron core, requires the machine to be represented by parameters that account for nonlinearities caused by both the magnetic saturation and the iron losses. This paper describes the methodology for determining the parameters of the equivalent electric circuit that includes the representation of iron losses. The parameters are derived from measurements performed under static conditions. The methodology is verified by comparing the dynamically measured results for the pull-out force against the results predicted by the model that is based on the equivalent circuit. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5166489

Sensitivity analysis of geometrical parameters on a double-sided linear switched reluctance motor / Amoros, J. G. in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 311 - 319 Titre : Sensitivity analysis of geometrical parameters on a double-sided linear switched reluctance motor Type de document : texte imprimé Auteurs : Amoros, J. G., Auteur ; Andrada, P., Auteur Article en page(s) : pp. 311 - 319 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Analytical  force  calculations  End  effects  Finite-element  analysis  Linear  switched  reluctance  machines  Machine  design  Sensitivity  analysis Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents a detailed sensitivity analysis of the effect of several geometrical parameters on the performance of a double-sided linear switched reluctance motor (LSRM). The analysis was conducted in two dimensions using finite-element method and takes into account only one part of the LSRM. This paper first investigates the powerful influence of stator- and translator-pole widths on force profiles. It then shows how these performance parameters are influenced by stator-pole length, translator-pole length, stack length, yoke length, and air gap. Experimental results confirm that the 2-D finite-element sensitivity analysis proposed in this paper may prove to be a useful tool for optimizing the geometry of a double-sided LSRM. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5256280 [article] Sensitivity analysis of geometrical parameters on a double-sided linear switched reluctance motor [texte imprimé] / Amoros, J. G., Auteur ; Andrada, P., Auteur . - pp. 311 - 319. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 311 - 319 Mots-clés : Analytical  force  calculations  End  effects  Finite-element  analysis  Linear  switched  reluctance  machines  Machine  design  Sensitivity  analysis Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents a detailed sensitivity analysis of the effect of several geometrical parameters on the performance of a double-sided linear switched reluctance motor (LSRM). The analysis was conducted in two dimensions using finite-element method and takes into account only one part of the LSRM. This paper first investigates the powerful influence of stator- and translator-pole widths on force profiles. It then shows how these performance parameters are influenced by stator-pole length, translator-pole length, stack length, yoke length, and air gap. Experimental results confirm that the 2-D finite-element sensitivity analysis proposed in this paper may prove to be a useful tool for optimizing the geometry of a double-sided LSRM. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5256280

Multiphysics approach to numerical modeling of a permanent-magnet tubular linear motor / Vese, Ioana-Cornelia in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 320 - 326 Titre : Multiphysics approach to numerical modeling of a permanent-magnet tubular linear motor Type de document : texte imprimé Auteurs : Vese, Ioana-Cornelia, Auteur ; Marignetti, Fabrizio, Auteur ; Radulescu, Mircea M., Auteur Article en page(s) : pp. 320 - 326 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Coupled  magnetic  and  thermal  field  analysis  Finite-element  (FE)  modeling  Permanent-magnet  (PM)  motor  Tubular  motor Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents a multiphysics modeling through finite-element (FE) coupled electromagnetic and thermal field analysis of a permanent-magnet tubular linear motor (PMTLM). Two-dimensional axial-symmetric FE steady-state and transient solutions are first obtained for the magnetic-flux-density distribution, cogging force, thrust, and losses of the PMTLM prototype. The FE magnetic field results are then used for the 3-D FE thermal simulation to get the PMTLM temperature distribution. This paper proves that the multiphysics numerical field analysis is a viable tool for the design and performance optimization of PMTLMs. The accuracy of the proposed study has been assessed through prior analytical and experimental results. Regarding the design aspects, some peculiarities in the thermal behavior of PMTLMs are emphasized. Generally, thermal models being not ready to develop, experimental and analytical solutions remain a preferred choice. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5229157 [article] Multiphysics approach to numerical modeling of a permanent-magnet tubular linear motor [texte imprimé] / Vese, Ioana-Cornelia, Auteur ; Marignetti, Fabrizio, Auteur ; Radulescu, Mircea M., Auteur . - pp. 320 - 326. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 320 - 326 Mots-clés : Coupled  magnetic  and  thermal  field  analysis  Finite-element  (FE)  modeling  Permanent-magnet  (PM)  motor  Tubular  motor Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents a multiphysics modeling through finite-element (FE) coupled electromagnetic and thermal field analysis of a permanent-magnet tubular linear motor (PMTLM). Two-dimensional axial-symmetric FE steady-state and transient solutions are first obtained for the magnetic-flux-density distribution, cogging force, thrust, and losses of the PMTLM prototype. The FE magnetic field results are then used for the 3-D FE thermal simulation to get the PMTLM temperature distribution. This paper proves that the multiphysics numerical field analysis is a viable tool for the design and performance optimization of PMTLMs. The accuracy of the proposed study has been assessed through prior analytical and experimental results. Regarding the design aspects, some peculiarities in the thermal behavior of PMTLMs are emphasized. Generally, thermal models being not ready to develop, experimental and analytical solutions remain a preferred choice. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5229157

Design optimization of short-stroke single-phase tubular permanent-magnet motor for refrigeration applications / Wang, Jiabin in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 327 - 334 Titre : Design optimization of short-stroke single-phase tubular permanent-magnet motor for refrigeration applications Type de document : texte imprimé Auteurs : Wang, Jiabin, Auteur ; Howe, David, Auteur ; Lin, Zhengyu, Auteur Article en page(s) : pp. 327 - 334 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Linear  machines  Permanent-magnet  (PM)  machines  Reciprocating  compressors Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper describes a design methodology to achieve optimal performance for a short-stroke single-phase tubular permanent-magnet motor which drives a reciprocating vapor compressor. The steady-state characteristic of the direct-drive linear-motor compressor system is analyzed, an analytical formula for predicting iron loss is presented, and a motor-design procedure which takes into account the effect of compressor loads under nominal operating condition is formulated. It is shown that the motor efficiency can be optimized with respect to two leading dimensional ratios. Experimental results validate the proposed design methodology. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5089447 [article] Design optimization of short-stroke single-phase tubular permanent-magnet motor for refrigeration applications [texte imprimé] / Wang, Jiabin, Auteur ; Howe, David, Auteur ; Lin, Zhengyu, Auteur . - pp. 327 - 334. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 327 - 334 Mots-clés : Linear  machines  Permanent-magnet  (PM)  machines  Reciprocating  compressors Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper describes a design methodology to achieve optimal performance for a short-stroke single-phase tubular permanent-magnet motor which drives a reciprocating vapor compressor. The steady-state characteristic of the direct-drive linear-motor compressor system is analyzed, an analytical formula for predicting iron loss is presented, and a motor-design procedure which takes into account the effect of compressor loads under nominal operating condition is formulated. It is shown that the motor efficiency can be optimized with respect to two leading dimensional ratios. Experimental results validate the proposed design methodology. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5089447

Electromagnetic guiding of vertical transportation vehicles / Appunn, Rüdiger in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 335 - 343 Titre : Electromagnetic guiding of vertical transportation vehicles : experimental evaluation Type de document : texte imprimé Auteurs : Appunn, Rüdiger, Auteur ; Schmulling, Benedikt, Auteur ; Hameyer, Kay, Auteur Article en page(s) : pp. 335 - 343 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Electromagnetic  actuator  Elevator  test  bench  Force  decoupling  Guideway  transportation  Linear  guiding  system  Magnetic  levitation  (maglev)  Mechatronics  Modeling  Motion  control  Simulation Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper describes the design of an electromagnetic elevator guiding system. One challenge of this design is the overdetermination of the mechanical system due to its high number of adjustment variables. Force decoupling, transformation from local to global quantities, and simulation results of the entire system are presented. In contrast to former works, a new elevator test bench for the evaluation of the simulation results is introduced. Measurement results validate the design process of both the electromagnetic actuators and feedback control. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5256217 [article] Electromagnetic guiding of vertical transportation vehicles : experimental evaluation [texte imprimé] / Appunn, Rüdiger, Auteur ; Schmulling, Benedikt, Auteur ; Hameyer, Kay, Auteur . - pp. 335 - 343. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 335 - 343 Mots-clés : Electromagnetic  actuator  Elevator  test  bench  Force  decoupling  Guideway  transportation  Linear  guiding  system  Magnetic  levitation  (maglev)  Mechatronics  Modeling  Motion  control  Simulation Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper describes the design of an electromagnetic elevator guiding system. One challenge of this design is the overdetermination of the mechanical system due to its high number of adjustment variables. Force decoupling, transformation from local to global quantities, and simulation results of the entire system are presented. In contrast to former works, a new elevator test bench for the evaluation of the simulation results is introduced. Measurement results validate the design process of both the electromagnetic actuators and feedback control. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5256217

Enhanced optimal torque control of fault-tolerant PM machine under flux-weakening operation / Sun, Zhigang in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 344 - 353 Titre : Enhanced optimal torque control of fault-tolerant PM machine under flux-weakening operation Type de document : texte imprimé Auteurs : Sun, Zhigang, Auteur ; Wang, Jiabin, Auteur ; Jewell, Geraint W., Auteur Article en page(s) : pp. 344 - 353 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Fault  tolerant  Flux  weakening  Permanent-magnet  (PM)  machines Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper describes an enhanced optimal-torque-control strategy for fault-tolerant permanent-magnet (PM) machines under flux-weakening operations. By adjusting the degree of flux weakening according to estimated instantaneous-torque-control errors, the torque-control performance of the machine can be improved when operating above its base speed under either open- or short-circuit fault condition. Extensive simulations under both healthy and fault conditions have been undertaken in order to validate the effectiveness of the proposed control strategy. Experimental results have also been given based on the testing of a prototype five-phase fault-tolerant PM machine. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5208251 [article] Enhanced optimal torque control of fault-tolerant PM machine under flux-weakening operation [texte imprimé] / Sun, Zhigang, Auteur ; Wang, Jiabin, Auteur ; Jewell, Geraint W., Auteur . - pp. 344 - 353. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 344 - 353 Mots-clés : Fault  tolerant  Flux  weakening  Permanent-magnet  (PM)  machines Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper describes an enhanced optimal-torque-control strategy for fault-tolerant permanent-magnet (PM) machines under flux-weakening operations. By adjusting the degree of flux weakening according to estimated instantaneous-torque-control errors, the torque-control performance of the machine can be improved when operating above its base speed under either open- or short-circuit fault condition. Extensive simulations under both healthy and fault conditions have been undertaken in order to validate the effectiveness of the proposed control strategy. Experimental results have also been given based on the testing of a prototype five-phase fault-tolerant PM machine. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5208251

Fuzzy logic and sliding-mode controls applied to six-phase induction machine with open phases / Fnaiech, Mohamed Amine in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 354 - 364 Titre : Fuzzy logic and sliding-mode controls applied to six-phase induction machine with open phases Type de document : texte imprimé Auteurs : Fnaiech, Mohamed Amine, Auteur ; Franck Betin, Auteur ; Capolino, Gérard-André, Auteur Article en page(s) : pp. 354 - 364 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Drive  control  Fuzzy  logic  control  (FLC)  Multiphase  industion  machine  Position  control  Real-time  implementation  Robustness  Variable  structure  control Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : The faulted mode of a six-phase induction machine (6PIM) denotes that the motor is working with one or more missing phases. This situation leads to torque oscillations and poor tracking behavior. Therefore, the design of a suitable robust control is a challenging task. In this way, this paper presents the application of fuzzy logic and sliding mode controls in order to obtain a high-accuracy positioning of a 6PIM rotor in both healthy and faulted modes. The two control strategies are completely different from a theoretical point of view, but the final objectives are to remove the drawbacks of the specific fault on interest. The experimental results are obtained on a dedicated setup based on a 6PIM coupled with a variable mechanical load and for which up to three phases can be removed. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5299018 [article] Fuzzy logic and sliding-mode controls applied to six-phase induction machine with open phases [texte imprimé] / Fnaiech, Mohamed Amine, Auteur ; Franck Betin, Auteur ; Capolino, Gérard-André, Auteur . - pp. 354 - 364. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 354 - 364 Mots-clés : Drive  control  Fuzzy  logic  control  (FLC)  Multiphase  industion  machine  Position  control  Real-time  implementation  Robustness  Variable  structure  control Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : The faulted mode of a six-phase induction machine (6PIM) denotes that the motor is working with one or more missing phases. This situation leads to torque oscillations and poor tracking behavior. Therefore, the design of a suitable robust control is a challenging task. In this way, this paper presents the application of fuzzy logic and sliding mode controls in order to obtain a high-accuracy positioning of a 6PIM rotor in both healthy and faulted modes. The two control strategies are completely different from a theoretical point of view, but the final objectives are to remove the drawbacks of the specific fault on interest. The experimental results are obtained on a dedicated setup based on a 6PIM coupled with a variable mechanical load and for which up to three phases can be removed. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5299018

Using PWM-induced transient excitation and advanced signal processing for zero-speed sensorless control of AC machines / Vogelsberger, Markus A. in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 365 - 374 Titre : Using PWM-induced transient excitation and advanced signal processing for zero-speed sensorless control of AC machines Type de document : texte imprimé Auteurs : Vogelsberger, Markus A., Auteur ; Grubic, Stefan, Auteur ; Habetler, Thomas G, Auteur Article en page(s) : pp. 365 - 374 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : AC  motor  drives  Current  measurement  Induction  motor  Neuronal  networks  Pulsewidth  modulation  (PWM)  Saturation  Speed  control  Transient  response Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : The sensorless control of induction machines, particularly for operation at low speed, has received significant attention in recent years. To realize a field-oriented control of AC machines that is able to work at zero speed, the most commonly used methods are either sensor-based models or transient-signal-excitation methods. The major disadvantage of present signal-injection methods is that they are intrusive to pulsewidth modulation (PWM). An additional switching sequence has to be embedded in the control that will cause a torque and current ripple. In order to overcome these problems, a new flux-estimation algorithm that uses the phase current derivative to extract the flux-position information is presented. In contrast to previously introduced methods, this new approach operates without additional transient excitation of the machine and requires only fundamental-wave excitation using standard PWM or slightly modified PWM. Furthermore, only the current response in the two active states of PWM is used. This makes it possible to use sensorless control for the whole speed range including overmodulation and removes the distortion and parasitic influence of the zero switching states during the estimation of the flux. Experimental results are presented to validate the applicability of the presented approach. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5210155 [article] Using PWM-induced transient excitation and advanced signal processing for zero-speed sensorless control of AC machines [texte imprimé] / Vogelsberger, Markus A., Auteur ; Grubic, Stefan, Auteur ; Habetler, Thomas G, Auteur . - pp. 365 - 374. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 365 - 374 Mots-clés : AC  motor  drives  Current  measurement  Induction  motor  Neuronal  networks  Pulsewidth  modulation  (PWM)  Saturation  Speed  control  Transient  response Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : The sensorless control of induction machines, particularly for operation at low speed, has received significant attention in recent years. To realize a field-oriented control of AC machines that is able to work at zero speed, the most commonly used methods are either sensor-based models or transient-signal-excitation methods. The major disadvantage of present signal-injection methods is that they are intrusive to pulsewidth modulation (PWM). An additional switching sequence has to be embedded in the control that will cause a torque and current ripple. In order to overcome these problems, a new flux-estimation algorithm that uses the phase current derivative to extract the flux-position information is presented. In contrast to previously introduced methods, this new approach operates without additional transient excitation of the machine and requires only fundamental-wave excitation using standard PWM or slightly modified PWM. Furthermore, only the current response in the two active states of PWM is used. This makes it possible to use sensorless control for the whole speed range including overmodulation and removes the distortion and parasitic influence of the zero switching states during the estimation of the flux. Experimental results are presented to validate the applicability of the presented approach. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5210155

Adaptive input–output feedback-linearization-based torque control of synchronous reluctance motor without mechanical sensor / Abootorabi Zarchi, Hossein in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 375 - 384 Titre : Adaptive input–output feedback-linearization-based torque control of synchronous reluctance motor without mechanical sensor Type de document : texte imprimé Auteurs : Abootorabi Zarchi, Hossein, Auteur ; Soltani, Jafar, Auteur ; Markadeh, Gholamreza Arab, Auteur Article en page(s) : pp. 375 - 384 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Adaptive  input-output  feedback  linearization  (AIOFL)  Encoderless  Synchronous  reluctance  motor  (SynRM) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : In this paper, a well-known adaptive input-output feedback-linearization (AIOFL) technique is used for speed and torque-tracking control of synchronous reluctance motor drive. This controller is capable of estimating motor two-axis inductances (Ld, Lq) simultaneously. The overall stability of the proposed control and the persistency of excitation condition are proved based on Lyapunov theory. In addition, the maximum rate of change of torque control scheme is applied to generate the motor d- and q-axis reference currents which are needed for AIOFL controllers. Another contribution of this paper is to estimate the rotor speed and position. For low-speed estimation, we have to eliminate the current and voltage sensors' dc offsets, detect the stator resistance, and take into account the voltage drop of the inverter power switches. We solve these problems by using a simple technique for eliminating the voltage sensors and a simple method for online estimation of the stator resistance and modeling the voltage drop of the inverter power switches. It is worthwhile to mention that the current sensors' dc offsets, seen on the measured currents, are negligible. Finally, the validity of the proposed method is verified by experimental results. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5159380 [article] Adaptive input–output feedback-linearization-based torque control of synchronous reluctance motor without mechanical sensor [texte imprimé] / Abootorabi Zarchi, Hossein, Auteur ; Soltani, Jafar, Auteur ; Markadeh, Gholamreza Arab, Auteur . - pp. 375 - 384. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 375 - 384 Mots-clés : Adaptive  input-output  feedback  linearization  (AIOFL)  Encoderless  Synchronous  reluctance  motor  (SynRM) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : In this paper, a well-known adaptive input-output feedback-linearization (AIOFL) technique is used for speed and torque-tracking control of synchronous reluctance motor drive. This controller is capable of estimating motor two-axis inductances (Ld, Lq) simultaneously. The overall stability of the proposed control and the persistency of excitation condition are proved based on Lyapunov theory. In addition, the maximum rate of change of torque control scheme is applied to generate the motor d- and q-axis reference currents which are needed for AIOFL controllers. Another contribution of this paper is to estimate the rotor speed and position. For low-speed estimation, we have to eliminate the current and voltage sensors' dc offsets, detect the stator resistance, and take into account the voltage drop of the inverter power switches. We solve these problems by using a simple technique for eliminating the voltage sensors and a simple method for online estimation of the stator resistance and modeling the voltage drop of the inverter power switches. It is worthwhile to mention that the current sensors' dc offsets, seen on the measured currents, are negligible. Finally, the validity of the proposed method is verified by experimental results. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5159380

Optimization of delayed-state Kalman-filter-based algorithm via differential evolution for sensorless control of induction motors / Salvatore, Nadia in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 385 - 394 Titre : Optimization of delayed-state Kalman-filter-based algorithm via differential evolution for sensorless control of induction motors Type de document : texte imprimé Auteurs : Salvatore, Nadia, Auteur ; Caponio, Andrea, Auteur ; Neri, Ferrante, Auteur Article en page(s) : pp. 385 - 394 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : AC  motor  drives  Algorithms  Covariance  matrices  Evolutionary  algorithms  (EAs)  Induction-motor  (IM)  drives  Kalman  filtering  Optimization  methods  Parameter  estimation  Speed  sensorless  State  estimation  Velocity  control Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper proposes the employment of the differential evolution (DE) to offline optimize the covariance matrices of a new reduced delayed-state Kalman-filter (DSKF)-based algorithm which estimates the stator-flux linkage components, in the stationary reference frame, to realize sensorless control of induction motors (IMs). The DSKF-based algorithm uses the derivatives of the stator-flux components as mathematical model and the stator-voltage equations as observation model so that only a vector of four variables has to be offline optimized. Numerical results, carried out using a low-speed training test, show that the proposed DE-based approach is very promising and clearly outperforms a classical local search and three popular metaheuristics in terms of quality of the final solution for the problem considered in this paper. A novel simple stator-flux-oriented sliding mode (SFO-SM) control scheme is online used in conjunction with the optimized DSKF-based algorithm to improve the robustness of the sensorless IM drive at low speed. The SFO-SM control scheme has closed loops of torque and stator-flux linkage without proportional-plus-integral controllers so that a minimum number of gains has to be tuned. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5280262 [article] Optimization of delayed-state Kalman-filter-based algorithm via differential evolution for sensorless control of induction motors [texte imprimé] / Salvatore, Nadia, Auteur ; Caponio, Andrea, Auteur ; Neri, Ferrante, Auteur . - pp. 385 - 394. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 385 - 394 Mots-clés : AC  motor  drives  Algorithms  Covariance  matrices  Evolutionary  algorithms  (EAs)  Induction-motor  (IM)  drives  Kalman  filtering  Optimization  methods  Parameter  estimation  Speed  sensorless  State  estimation  Velocity  control Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper proposes the employment of the differential evolution (DE) to offline optimize the covariance matrices of a new reduced delayed-state Kalman-filter (DSKF)-based algorithm which estimates the stator-flux linkage components, in the stationary reference frame, to realize sensorless control of induction motors (IMs). The DSKF-based algorithm uses the derivatives of the stator-flux components as mathematical model and the stator-voltage equations as observation model so that only a vector of four variables has to be offline optimized. Numerical results, carried out using a low-speed training test, show that the proposed DE-based approach is very promising and clearly outperforms a classical local search and three popular metaheuristics in terms of quality of the final solution for the problem considered in this paper. A novel simple stator-flux-oriented sliding mode (SFO-SM) control scheme is online used in conjunction with the optimized DSKF-based algorithm to improve the robustness of the sensorless IM drive at low speed. The SFO-SM control scheme has closed loops of torque and stator-flux linkage without proportional-plus-integral controllers so that a minimum number of gains has to be tuned. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5280262

Sensorless direct torque and flux-controlled IPM synchronous motor drive at very low speed without signal injection / Foo, Gilbert in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 395 - 403 Titre : Sensorless direct torque and flux-controlled IPM synchronous motor drive at very low speed without signal injection Type de document : texte imprimé Auteurs : Foo, Gilbert, Auteur ; Muhammed Fazlur Rahman, Auteur Article en page(s) : pp. 395 - 403 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : AC  motor  drives  Direct  torque  and  flux  control  (DTFC)  Extended  rotor  flux  Interior  permanent-magnet  (IPM)  synchronous  motor  (IPMSM)  Lyapunov  methods  Sensorless  control  Stator  flux  observer  Stator  resistance  estimation  Variable-speed  drives  Zero  speed Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper proposes a novel speed-sensorless direct torque and flux control scheme for an interior permanent-magnet synchronous motor drive. The drive uses a new stator flux observer based on the extended rotor flux concept. Due to the simultaneous implementation of stationary and rotating reference frames, the proposed observer does not require any speed adaptation and is inherently sensorless. Unlike speed adaptive observers, the proposed observer is immune to speed estimation errors; thus, its performance at very low speed is improved significantly. A novel stator resistance estimator is incorporated into the sensorless drive to compensate the effects of stator resistance variation. The global asymptotic stabilities of both the flux observer and stator resistance estimator are guaranteed by the Lyapunov stability analysis. Simulation and experimental results at very low speeds, including 0 and 5 r/min, confirm the effectiveness of the proposed method. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5226582 [article] Sensorless direct torque and flux-controlled IPM synchronous motor drive at very low speed without signal injection [texte imprimé] / Foo, Gilbert, Auteur ; Muhammed Fazlur Rahman, Auteur . - pp. 395 - 403. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 395 - 403 Mots-clés : AC  motor  drives  Direct  torque  and  flux  control  (DTFC)  Extended  rotor  flux  Interior  permanent-magnet  (IPM)  synchronous  motor  (IPMSM)  Lyapunov  methods  Sensorless  control  Stator  flux  observer  Stator  resistance  estimation  Variable-speed  drives  Zero  speed Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper proposes a novel speed-sensorless direct torque and flux control scheme for an interior permanent-magnet synchronous motor drive. The drive uses a new stator flux observer based on the extended rotor flux concept. Due to the simultaneous implementation of stationary and rotating reference frames, the proposed observer does not require any speed adaptation and is inherently sensorless. Unlike speed adaptive observers, the proposed observer is immune to speed estimation errors; thus, its performance at very low speed is improved significantly. A novel stator resistance estimator is incorporated into the sensorless drive to compensate the effects of stator resistance variation. The global asymptotic stabilities of both the flux observer and stator resistance estimator are guaranteed by the Lyapunov stability analysis. Simulation and experimental results at very low speeds, including 0 and 5 r/min, confirm the effectiveness of the proposed method. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5226582

Predictive direct torque control for flux and torque ripple reduction / Beerten, Jef in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 404 - 412 Titre : Predictive direct torque control for flux and torque ripple reduction Type de document : texte imprimé Auteurs : Beerten, Jef, Auteur ; Verveckken, Jan, Auteur ; Driesen, Johan, Auteur Article en page(s) : pp. 404 - 412 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Direct  torque  control  (DTC)  Discrete-time  systems  Induction  machine  torque  control  Predictive  control Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : In this paper, a prediction scheme is presented to diminish both the torque and flux ripples in a direct torque control (DTC) induction motor drive. In a discrete implementation of the classical DTC scheme, the time delay associated with data processing results in additional torque and flux ripples. This part of the ripples can amount to a significant fraction of the overall ripple if the hysteresis bands are comparable to the maximum torque and flux variations in one sampling interval. This paper presents a prediction scheme with low computational complexity and low parameter sensitivity, both comparable to the standard DTC scheme. The prediction scheme can easily be extended to compensate for multiple time delays when the sampling frequency is raised but the computation time remains unchanged. Experimental results show the diminishing effect of the prediction scheme on the torque and flux ripples. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5280261 [article] Predictive direct torque control for flux and torque ripple reduction [texte imprimé] / Beerten, Jef, Auteur ; Verveckken, Jan, Auteur ; Driesen, Johan, Auteur . - pp. 404 - 412. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 404 - 412 Mots-clés : Direct  torque  control  (DTC)  Discrete-time  systems  Induction  machine  torque  control  Predictive  control Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : In this paper, a prediction scheme is presented to diminish both the torque and flux ripples in a direct torque control (DTC) induction motor drive. In a discrete implementation of the classical DTC scheme, the time delay associated with data processing results in additional torque and flux ripples. This part of the ripples can amount to a significant fraction of the overall ripple if the hysteresis bands are comparable to the maximum torque and flux variations in one sampling interval. This paper presents a prediction scheme with low computational complexity and low parameter sensitivity, both comparable to the standard DTC scheme. The prediction scheme can easily be extended to compensate for multiple time delays when the sampling frequency is raised but the computation time remains unchanged. Experimental results show the diminishing effect of the prediction scheme on the torque and flux ripples. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5280261

Optimal torque control of synchronous machines based on finite-element analysis / de Kock, Hugo W. in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 413 - 419 Titre : Optimal torque control of synchronous machines based on finite-element analysis Type de document : texte imprimé Auteurs : de Kock, Hugo W., Auteur ; Rix, Arnold J., Auteur ; Kamper, Maarten J., Auteur Article en page(s) : pp. 413 - 419 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Finite  element  (FE)  analysis  Synchronous  machines  Torque  control Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Synchronous machines that are optimally designed using finite-element (FE) software, and control of such machines using powerful digital signal processors (DSPs), are commonplace today. With field-orientated control, the maximum-torque-per-ampere control strategy for unsaturated voltage conditions (below the base speed) is well known; the field-weakening strategy, however, could be rather complicated. In this paper, a straightforward torque control strategy for the entire speed range is proposed and demonstrated. Practical implementation of the method is very simple since the calculations are done offline in an automated process and are therefore removed from the load of the DSP. The process relies on machine-specific data from FE analysis and therefore includes nonlinear effects such as saturation and cross coupling. Simulation and practical results for a permanent-magnet and a reluctance synchronous machine show that the torque is controlled effectively in the entire speed range using this generic method. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5229183 [article] Optimal torque control of synchronous machines based on finite-element analysis [texte imprimé] / de Kock, Hugo W., Auteur ; Rix, Arnold J., Auteur ; Kamper, Maarten J., Auteur . - pp. 413 - 419. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 413 - 419 Mots-clés : Finite  element  (FE)  analysis  Synchronous  machines  Torque  control Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Synchronous machines that are optimally designed using finite-element (FE) software, and control of such machines using powerful digital signal processors (DSPs), are commonplace today. With field-orientated control, the maximum-torque-per-ampere control strategy for unsaturated voltage conditions (below the base speed) is well known; the field-weakening strategy, however, could be rather complicated. In this paper, a straightforward torque control strategy for the entire speed range is proposed and demonstrated. Practical implementation of the method is very simple since the calculations are done offline in an automated process and are therefore removed from the load of the DSP. The process relies on machine-specific data from FE analysis and therefore includes nonlinear effects such as saturation and cross coupling. Simulation and practical results for a permanent-magnet and a reluctance synchronous machine show that the torque is controlled effectively in the entire speed range using this generic method. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5229183

Precision control and compensation of servomotors and machine tools via the disturbance observer / Huang, Wei-Sheng in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 420 - 429 Titre : Precision control and compensation of servomotors and machine tools via the disturbance observer Type de document : texte imprimé Auteurs : Huang, Wei-Sheng, Auteur ; Liu, Chun-Wei, Auteur ; Pau-Lo, Hsu, Auteur Article en page(s) : pp. 420 - 429 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Contouring  Disturbance  Friction  Identification  Inertia  Machine  tool  control  Motion  tool  Observer  Servomotor  Viscous Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : The computerized numerical control machine tool is a highly integrated mechatronic system in manufacturing processes. However, uncertainties degrade its motion accuracy. These include modeling errors, parameter variation, friction, and measurement errors that are present in either linear or nonlinear nature. In this paper, a state-space disturbance observer was successfully applied to servomotors to estimate and compensate for the uncertainties of parameter variation and current measurement problems, in the velocity and current loops, respectively. Furthermore, an autotuning procedure was developed accordingly to identify the varied parameters of the motor. Furthermore, by implementing the present servomotor systems in high-precision machine tools, the nonlinear friction compensation was adopted to reduce the slip-stick effect in contouring motion. Experimental results indicate that the roundness error has been significantly reduced from 13.3 to 2.0 ¿m by applying the proposed approaches. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5291793 [article] Precision control and compensation of servomotors and machine tools via the disturbance observer [texte imprimé] / Huang, Wei-Sheng, Auteur ; Liu, Chun-Wei, Auteur ; Pau-Lo, Hsu, Auteur . - pp. 420 - 429. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 420 - 429 Mots-clés : Contouring  Disturbance  Friction  Identification  Inertia  Machine  tool  control  Motion  tool  Observer  Servomotor  Viscous Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : The computerized numerical control machine tool is a highly integrated mechatronic system in manufacturing processes. However, uncertainties degrade its motion accuracy. These include modeling errors, parameter variation, friction, and measurement errors that are present in either linear or nonlinear nature. In this paper, a state-space disturbance observer was successfully applied to servomotors to estimate and compensate for the uncertainties of parameter variation and current measurement problems, in the velocity and current loops, respectively. Furthermore, an autotuning procedure was developed accordingly to identify the varied parameters of the motor. Furthermore, by implementing the present servomotor systems in high-precision machine tools, the nonlinear friction compensation was adopted to reduce the slip-stick effect in contouring motion. Experimental results indicate that the roundness error has been significantly reduced from 13.3 to 2.0 ¿m by applying the proposed approaches. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5291793

Generation of multisinusoidal test signals for the identification of synchronous-machine parameters by using a voltage-source inverter / Vandoorn, Tine L. in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 430 - 439 Titre : Generation of multisinusoidal test signals for the identification of synchronous-machine parameters by using a voltage-source inverter Type de document : texte imprimé Auteurs : Vandoorn, Tine L., Auteur ; De Belie, Frederik M., Auteur ; Vyncke, Thomas J., Auteur Article en page(s) : pp. 430 - 439 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Frequency  response  Impedance  measurement  Inverters  Parameter  estimation  Permanent-magnet  machines  Pulsewidth  modulation  (PWM)  Rotating-machine  testing Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : With the standstill frequency-response (SSFR) test, accurate electrical-machine models can be identified. However, it can be a time-consuming method, particularly in case the machine has to be identified at low frequencies. To shorten the required time for identification, in this paper, the response on a broadband signal is measured, resulting in a multisine SSFR test. To generate the broadband signal, a high-power linear amplifier can be applied as a waveform generator. As this signal generator is not commonly available in the field, the application of a voltage-source inverter (VSI) is discussed. The multisine SSFR test with a VSI allows swift evaluation of the influence of frequency, saturation, and cross saturation on the q-and d-axis parameters with a signal generator that is often already available to control the machine. Extensive measurements are performed on several permanent-magnet synchronous machines and the method can be extended to synchronous machines with rotor-field winding. By applying a switching converter instead of a linear amplifier, it can be expected that the identification results are affected by the switching actions. Therefore, multisine SSFR tests with either a VSI or a high-power linear amplifier as well as conventional tests as described in the IEEE standard are performed, and the results are compared. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5229185 [article] Generation of multisinusoidal test signals for the identification of synchronous-machine parameters by using a voltage-source inverter [texte imprimé] / Vandoorn, Tine L., Auteur ; De Belie, Frederik M., Auteur ; Vyncke, Thomas J., Auteur . - pp. 430 - 439. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 430 - 439 Mots-clés : Frequency  response  Impedance  measurement  Inverters  Parameter  estimation  Permanent-magnet  machines  Pulsewidth  modulation  (PWM)  Rotating-machine  testing Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : With the standstill frequency-response (SSFR) test, accurate electrical-machine models can be identified. However, it can be a time-consuming method, particularly in case the machine has to be identified at low frequencies. To shorten the required time for identification, in this paper, the response on a broadband signal is measured, resulting in a multisine SSFR test. To generate the broadband signal, a high-power linear amplifier can be applied as a waveform generator. As this signal generator is not commonly available in the field, the application of a voltage-source inverter (VSI) is discussed. The multisine SSFR test with a VSI allows swift evaluation of the influence of frequency, saturation, and cross saturation on the q-and d-axis parameters with a signal generator that is often already available to control the machine. Extensive measurements are performed on several permanent-magnet synchronous machines and the method can be extended to synchronous machines with rotor-field winding. By applying a switching converter instead of a linear amplifier, it can be expected that the identification results are affected by the switching actions. Therefore, multisine SSFR tests with either a VSI or a high-power linear amplifier as well as conventional tests as described in the IEEE standard are performed, and the results are compared. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5229185

Feedforward flux-weakening control of surface-mounted permanent-magnet synchronous motors accounting for resistive voltage drop / Tursini, Marco in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 440 - 448 Titre : Feedforward flux-weakening control of surface-mounted permanent-magnet synchronous motors accounting for resistive voltage drop Type de document : texte imprimé Auteurs : Tursini, Marco, Auteur ; Chiricozzi, Enzo, Auteur ; Petrella, Roberto, Auteur Article en page(s) : pp. 440 - 448 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : ACmotor  drives  Flux-weakening  control  Industrial  automation  Motion  control  Permanen-magnet  motors  Position  control  Resistive  voltage  drop Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper deals with the flux-weakening control of surface-mounted permanent-magnet synchronous motors, taking into account the influence of the resistive voltage drop in the stator windings, whose effect is usually neglected in similar studies. First, the motor equations exploiting the optimal torque-speed limits in the flux-weakening region are evaluated and discussed. Then, the influence of the resistive voltage drop is pointed out, highlighting its effect on the setup of the flux-weakening strategy. Hence, a simplified approach to flux-weakening motor control is presented, useful for the practical implementation in microcontrolled drives. Finally, experimental results are shown, using a position tracking application as a test case. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5299011 [article] Feedforward flux-weakening control of surface-mounted permanent-magnet synchronous motors accounting for resistive voltage drop [texte imprimé] / Tursini, Marco, Auteur ; Chiricozzi, Enzo, Auteur ; Petrella, Roberto, Auteur . - pp. 440 - 448. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 440 - 448 Mots-clés : ACmotor  drives  Flux-weakening  control  Industrial  automation  Motion  control  Permanen-magnet  motors  Position  control  Resistive  voltage  drop Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper deals with the flux-weakening control of surface-mounted permanent-magnet synchronous motors, taking into account the influence of the resistive voltage drop in the stator windings, whose effect is usually neglected in similar studies. First, the motor equations exploiting the optimal torque-speed limits in the flux-weakening region are evaluated and discussed. Then, the influence of the resistive voltage drop is pointed out, highlighting its effect on the setup of the flux-weakening strategy. Hence, a simplified approach to flux-weakening motor control is presented, useful for the practical implementation in microcontrolled drives. Finally, experimental results are shown, using a position tracking application as a test case. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5299011

A speed controller for a two-winding induction motor based on diametrical inversion / Guerreiro, Manuel in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 449 - 456 Titre : A speed controller for a two-winding induction motor based on diametrical inversion Type de document : texte imprimé Auteurs : Guerreiro, Manuel, Auteur ; Foito, Daniel, Auteur ; Cordeiro, Armando, Auteur Article en page(s) : pp. 449 - 456 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Diametrical  inversion  (DI)  Quadrature  inversion  (QI)  Robustness  Single-phase  induction  motor  (SPIM)  Sliding  mode  Speed  control  Switching  function Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : The objective is to control the speed of a single- or two-phase induction motor using diametrical inversion (DI) of the stator voltages. DI is a particular reversal of the sequence phases characterized by replacement of the voltage phasor by another that is diametrically opposed to it and rotating in the opposite direction. Every DI is provoked by a change in the sign of the simplest switching function (speed error) of a sliding mode. These changes cause jumps of 180° of the stator voltage phasor and successive discontinuities of its angular velocity. The main and auxiliary windings are always connected, the speed-error sign decides the rotating field direction, and so, the actual rotor velocity can be reduced (braked) or increased (accelerated). The motor is fed by a rectifier associated with a three-phase inverter. The common point of the windings is connected to the inverter's middle leg, which is switched at high frequency with a duty cycle of 50%. The core of the drive command is a 16-b dsPIC device, which receives the speed-error sign and generates the appropriate pulsewidth modulated signals to the three-phase inverter. Matlab/Simulink simulation and experimental results showed a good performance of the speed controller based on the DI. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5291791 [article] A speed controller for a two-winding induction motor based on diametrical inversion [texte imprimé] / Guerreiro, Manuel, Auteur ; Foito, Daniel, Auteur ; Cordeiro, Armando, Auteur . - pp. 449 - 456. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 449 - 456 Mots-clés : Diametrical  inversion  (DI)  Quadrature  inversion  (QI)  Robustness  Single-phase  induction  motor  (SPIM)  Sliding  mode  Speed  control  Switching  function Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : The objective is to control the speed of a single- or two-phase induction motor using diametrical inversion (DI) of the stator voltages. DI is a particular reversal of the sequence phases characterized by replacement of the voltage phasor by another that is diametrically opposed to it and rotating in the opposite direction. Every DI is provoked by a change in the sign of the simplest switching function (speed error) of a sliding mode. These changes cause jumps of 180° of the stator voltage phasor and successive discontinuities of its angular velocity. The main and auxiliary windings are always connected, the speed-error sign decides the rotating field direction, and so, the actual rotor velocity can be reduced (braked) or increased (accelerated). The motor is fed by a rectifier associated with a three-phase inverter. The common point of the windings is connected to the inverter's middle leg, which is switched at high frequency with a duty cycle of 50%. The core of the drive command is a 16-b dsPIC device, which receives the speed-error sign and generates the appropriate pulsewidth modulated signals to the three-phase inverter. Matlab/Simulink simulation and experimental results showed a good performance of the speed controller based on the DI. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5291791

Drive topologies for solar-powered aircraft / Mecrow, Barrie C. in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 457 - 464 Titre : Drive topologies for solar-powered aircraft Type de document : texte imprimé Auteurs : Mecrow, Barrie C., Auteur ; Bennett, John W., Auteur ; Jack, Alan G., Auteur Article en page(s) : pp. 457 - 464 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Aircraft  Aircraft  propulsion  Brushless  machines  Electric  machines  Electromagnetic  fields  Motor  drives  Permanent-magnet  machines  Permanent-magnet  motors  Photovoltaic  cells  Solar  energy Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Solar-powered aircraft require electric drives for the main propulsion system. It is critical that these drives provide both very high efficiency and low mass. This paper discusses the relative merits of different machine topologies based upon maximizing efficiency, taking into account power-electronic losses, motor losses, mass, and size penalties. Laminated machines are usually limited in their efficiency at light load because of their iron losses. This paper shows how, by combining a high pole number with an ultralow loss lamination material, these machines can be more efficient than other more complex arrangements which have been adopted by others. A demonstrator machine has been built and predicted efficiencies have been validated by test. It has then been used to propel a solar plane to over 60000 feet and extend the aircraft flight-endurance world record from 30 to 84 h. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5229205 [article] Drive topologies for solar-powered aircraft [texte imprimé] / Mecrow, Barrie C., Auteur ; Bennett, John W., Auteur ; Jack, Alan G., Auteur . - pp. 457 - 464. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 457 - 464 Mots-clés : Aircraft  Aircraft  propulsion  Brushless  machines  Electric  machines  Electromagnetic  fields  Motor  drives  Permanent-magnet  machines  Permanent-magnet  motors  Photovoltaic  cells  Solar  energy Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Solar-powered aircraft require electric drives for the main propulsion system. It is critical that these drives provide both very high efficiency and low mass. This paper discusses the relative merits of different machine topologies based upon maximizing efficiency, taking into account power-electronic losses, motor losses, mass, and size penalties. Laminated machines are usually limited in their efficiency at light load because of their iron losses. This paper shows how, by combining a high pole number with an ultralow loss lamination material, these machines can be more efficient than other more complex arrangements which have been adopted by others. A demonstrator machine has been built and predicted efficiencies have been validated by test. It has then been used to propel a solar plane to over 60000 feet and extend the aircraft flight-endurance world record from 30 to 84 h. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5229205