Dépouillements

Design of an SRM speed control strategy for a wide range of operating speeds / Hannoun, Hala in IEEE transactions on industrial electronics, Vol. 57 N° 9 (Septembre 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 2911 - 2921 Titre : Design of an SRM speed control strategy for a wide range of operating speeds Type de document : texte imprimé Auteurs : Hannoun, Hala, Auteur ; Hilairet, Mickaël, Auteur ; Marchand, Claude, Auteur Année de publication : 2011 Article en page(s) : pp. 2911 - 2921 Note générale : Génie élecrique Langues : Anglais (eng) Mots-clés : Continuous  conduction  mode  (CCM)  Discontinuous  conduction-mode  (DCM)  Instantaneous  and  average  torque  control  Speed  control  Switched  reluctance  machine  (SRM) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents a speed control strategy for a switched reluctance machine (SRM). Two control strategies are compared to select the most appropriate control that allows the SRM to operate in wide-speed-range operation. The proposed strategy is first designed to control the speed in discontinuous conduction mode and is then extended to operate in continuous conduction mode as well. In this paper, the transition from three different operating modes is detailed, and the experimental results validate the proposed strategy. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5545588 [article] Design of an SRM speed control strategy for a wide range of operating speeds [texte imprimé] / Hannoun, Hala, Auteur ; Hilairet, Mickaël, Auteur ; Marchand, Claude, Auteur . - 2011 . - pp. 2911 - 2921. Génie élecrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 2911 - 2921 Mots-clés : Continuous  conduction  mode  (CCM)  Discontinuous  conduction-mode  (DCM)  Instantaneous  and  average  torque  control  Speed  control  Switched  reluctance  machine  (SRM) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents a speed control strategy for a switched reluctance machine (SRM). Two control strategies are compared to select the most appropriate control that allows the SRM to operate in wide-speed-range operation. The proposed strategy is first designed to control the speed in discontinuous conduction mode and is then extended to operate in continuous conduction mode as well. In this paper, the transition from three different operating modes is detailed, and the experimental results validate the proposed strategy. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5545588

Gain-scheduling regulator for high-performance position control of Switched reluctance motor drives / Mademlis, Christos in IEEE transactions on industrial electronics, Vol. 57 N° 9 (Septembre 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 2922 - 2931 Titre : Gain-scheduling regulator for high-performance position control of Switched reluctance motor drives Type de document : texte imprimé Auteurs : Mademlis, Christos, Auteur ; Kioskeridis, Iordanis, Auteur Année de publication : 2011 Article en page(s) : pp. 2922 - 2931 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Current  control  Position  control  Self-tuning  regulator  Switched  reluctance  motor(SRM)  drives  Torque  control  Variable-speed  drives Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : The problem of high-precision position control in switched reluctance motor (SRM) drives is investigated in this paper. Advanced proportional-integral and proportional-differential controllers for speed and position controls, respectively, are adopted. A gain-scheduling technique is adopted in the speed controller design for providing high dynamic performance and precise position control. In order to improve the set-point tracking, a low-pass filter is included in the position controller. The proposed four-quadrant control scheme is based on the average torque control method. The turn-on and turn-off angles are online determined through simple formulas so as to reduce the torque ripple at an acceptable level over a wide speed range. This is important since the position precision is highly influenced from the motor torque ripple. Experimental results of the SRM dynamic response are presented to verify the theoretical considerations and to demonstrate the effectiveness of the proposed control scheme. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5371879 [article] Gain-scheduling regulator for high-performance position control of Switched reluctance motor drives [texte imprimé] / Mademlis, Christos, Auteur ; Kioskeridis, Iordanis, Auteur . - 2011 . - pp. 2922 - 2931. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 2922 - 2931 Mots-clés : Current  control  Position  control  Self-tuning  regulator  Switched  reluctance  motor(SRM)  drives  Torque  control  Variable-speed  drives Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : The problem of high-precision position control in switched reluctance motor (SRM) drives is investigated in this paper. Advanced proportional-integral and proportional-differential controllers for speed and position controls, respectively, are adopted. A gain-scheduling technique is adopted in the speed controller design for providing high dynamic performance and precise position control. In order to improve the set-point tracking, a low-pass filter is included in the position controller. The proposed four-quadrant control scheme is based on the average torque control method. The turn-on and turn-off angles are online determined through simple formulas so as to reduce the torque ripple at an acceptable level over a wide speed range. This is important since the position precision is highly influenced from the motor torque ripple. Experimental results of the SRM dynamic response are presented to verify the theoretical considerations and to demonstrate the effectiveness of the proposed control scheme. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5371879

State-switching control technique for switched reluctance motor drives: theory and implementation / Lukic, Srqjan M. in IEEE transactions on industrial electronics, Vol. 57 N° 9 (Septembre 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 2932 - 2938 Titre : State-switching control technique for switched reluctance motor drives: theory and implementation Type de document : texte imprimé Auteurs : Lukic, Srqjan M., Auteur ; Emadi, Ali, Auteur Année de publication : 2011 Article en page(s) : pp. 2932 - 2938 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Speed  control  Switched  reluctance  motors  (SRM) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Switched reluctance motors (SRMs) exhibit advantageous features such as low inertia, fault tolerance, high efficiency, and simple design. However, its control is fairly complex due to nonlinear characteristics of the magnetic flux linkage seen on the stator windings. Several memory and/or processor intensive solutions have been proposed to deal with the control problem, constraining the use of the motor to high-cost and high-performance applications. The focus of this paper is to develop a simple controller for the SRM based on state-switching digital control. The concept of state-switching digital control is to control the motor state (speed) by applying a high or a low energy pulse-above and below the desired steady state of the motor. Such a controller can be implemented in low-complexity analog circuitry. This paper presents two methods of motor control: one for single-speed applications and another for variable speed applications. In addition, this paper derives the control equations and disturbance rejection response. Simulation and experimental results for various operating modes are presented. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5373905 [article] State-switching control technique for switched reluctance motor drives: theory and implementation [texte imprimé] / Lukic, Srqjan M., Auteur ; Emadi, Ali, Auteur . - 2011 . - pp. 2932 - 2938. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 2932 - 2938 Mots-clés : Speed  control  Switched  reluctance  motors  (SRM) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Switched reluctance motors (SRMs) exhibit advantageous features such as low inertia, fault tolerance, high efficiency, and simple design. However, its control is fairly complex due to nonlinear characteristics of the magnetic flux linkage seen on the stator windings. Several memory and/or processor intensive solutions have been proposed to deal with the control problem, constraining the use of the motor to high-cost and high-performance applications. The focus of this paper is to develop a simple controller for the SRM based on state-switching digital control. The concept of state-switching digital control is to control the motor state (speed) by applying a high or a low energy pulse-above and below the desired steady state of the motor. Such a controller can be implemented in low-complexity analog circuitry. This paper presents two methods of motor control: one for single-speed applications and another for variable speed applications. In addition, this paper derives the control equations and disturbance rejection response. Simulation and experimental results for various operating modes are presented. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5373905

Calculation of the acoustic noise spectrum of SRM using modal superposition / Fiedler, Jens O. in IEEE transactions on industrial electronics, Vol. 57 N° 9 (Septembre 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 2939 - 2945 Titre : Calculation of the acoustic noise spectrum of SRM using modal superposition Type de document : texte imprimé Auteurs : Fiedler, Jens O., Auteur ; Kasper, Knut A., Auteur ; de Doncker, Rik W., Auteur Année de publication : 2011 Article en page(s) : pp. 2939 - 2945 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Spectrum  Stator  eigen  mode  Switched  reluctance  machine  (SRM)  Vibrations Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents a method to calculate the harmonic content of stator vibrations and acoustic noise resulting from radial force excitations in switched reluctance machines (SRM). The method is based on a thin cylinder approximation of the stator. The eigen modes are represented by their transmission impedance. The spectral composition of the vibrations can be calculated using superposition of the eigen modes and vibrations caused by all phases of the SRM. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5439774 [article] Calculation of the acoustic noise spectrum of SRM using modal superposition [texte imprimé] / Fiedler, Jens O., Auteur ; Kasper, Knut A., Auteur ; de Doncker, Rik W., Auteur . - 2011 . - pp. 2939 - 2945. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 2939 - 2945 Mots-clés : Spectrum  Stator  eigen  mode  Switched  reluctance  machine  (SRM)  Vibrations Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents a method to calculate the harmonic content of stator vibrations and acoustic noise resulting from radial force excitations in switched reluctance machines (SRM). The method is based on a thin cylinder approximation of the stator. The eigen modes are represented by their transmission impedance. The spectral composition of the vibrations can be calculated using superposition of the eigen modes and vibrations caused by all phases of the SRM. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5439774

Acoustic simulation of a special switched reluctance drive by means of field–circuit coupling and multiphysics simulation / van der Giet, M. in IEEE transactions on industrial electronics, Vol. 57 N° 9 (Septembre 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 2946 - 2953 Titre : Acoustic simulation of a special switched reluctance drive by means of field–circuit coupling and multiphysics simulation Type de document : texte imprimé Auteurs : van der Giet, M., Auteur ; Lange, E., Auteur ; Corrêa, D. A. P., Auteur Année de publication : 2011 Article en page(s) : pp. 2946 - 2953 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Acoustic  noise  of  electrical  machines  Field-circuit  coupling  numerical  simulation  Finite-element  method  (FEM)  Switched  reluctance  motor  (SRM) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : The approach presented in this paper consists of an energy-based field-circuit coupling in combination with multiphysics simulation of the acoustic radiation of electrical machines. The proposed method is applied to a special switched reluctance motor with asymmetric pole geometry to improve the start-up torque. The pole shape has been optimized, subject to low torque ripple, in a previous study. The proposed approach here is used to analyze the impact of the optimization on the overall acoustic behavior. The field-circuit coupling is based on a temporary lumped-parameter model of the magnetic part incorporated into a circuit simulation based on the modified nodal analysis. The harmonic force excitation is calculated by means of stress tensor computation, and it is transformed to a mechanical mesh by mapping techniques. The structural dynamic problem is solved in the frequency domain using a finite-element modal analysis and superposition. The radiation characteristic is obtained from boundary element acoustic simulation. Simulation results of both rotor types are compared, and measurements of the drive are presented. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5483214 [article] Acoustic simulation of a special switched reluctance drive by means of field–circuit coupling and multiphysics simulation [texte imprimé] / van der Giet, M., Auteur ; Lange, E., Auteur ; Corrêa, D. A. P., Auteur . - 2011 . - pp. 2946 - 2953. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 2946 - 2953 Mots-clés : Acoustic  noise  of  electrical  machines  Field-circuit  coupling  numerical  simulation  Finite-element  method  (FEM)  Switched  reluctance  motor  (SRM) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : The approach presented in this paper consists of an energy-based field-circuit coupling in combination with multiphysics simulation of the acoustic radiation of electrical machines. The proposed method is applied to a special switched reluctance motor with asymmetric pole geometry to improve the start-up torque. The pole shape has been optimized, subject to low torque ripple, in a previous study. The proposed approach here is used to analyze the impact of the optimization on the overall acoustic behavior. The field-circuit coupling is based on a temporary lumped-parameter model of the magnetic part incorporated into a circuit simulation based on the modified nodal analysis. The harmonic force excitation is calculated by means of stress tensor computation, and it is transformed to a mechanical mesh by mapping techniques. The structural dynamic problem is solved in the frequency domain using a finite-element modal analysis and superposition. The radiation characteristic is obtained from boundary element acoustic simulation. Simulation results of both rotor types are compared, and measurements of the drive are presented. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5483214

Rotor-position estimation of switched reluctance motors based on damped voltage resonance / Geldhof, Kristof R. in IEEE transactions on industrial electronics, Vol. 57 N° 9 (Septembre 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 2954 - 2960 Titre : Rotor-position estimation of switched reluctance motors based on damped voltage resonance Type de document : texte imprimé Auteurs : Geldhof, Kristof R., Auteur ; Van den Bossche, Alex P. M., Auteur ; Melkebeek, Jan A., Auteur Année de publication : 2011 Article en page(s) : pp. 2954 - 2960 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Position  estimation  Resonance  Switched  reluctance  motor  (SRM)  Test  pulse Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper proposes a method to obtain the rotor position of switched reluctance motors (SRMs) by means of voltage measurements. It is shown that the combination of a motor and a power-electronic converter defines a resonant circuit, comprising the motor phase inductances and the parasitic capacitance of converter switches, power cables, and motor phase windings. For salient machines, in general, the associated resonance frequency of the circuit depends on the rotor position. In the position-estimation method, an initial voltage distribution is imposed over the impedances of the resonant circuit after which the circuit is let to oscillate freely. During this phase of free oscillation, the induced voltage over a phase winding exhibits a damped oscillatory behavior, from which position information can be retrieved. An overview is given of the different possibilities to trigger the voltage resonance. It is shown that the proposed position-estimation method has favorable characteristics such as measurement of large-amplitude voltages, robustness against temperature deviations of motor and power semiconductors, very high update rates for the estimated position, and absence of sound and disturbance torque. Experimental results are given for a sensorless commutation scheme of an SRM under small load. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5371878 [article] Rotor-position estimation of switched reluctance motors based on damped voltage resonance [texte imprimé] / Geldhof, Kristof R., Auteur ; Van den Bossche, Alex P. M., Auteur ; Melkebeek, Jan A., Auteur . - 2011 . - pp. 2954 - 2960. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 2954 - 2960 Mots-clés : Position  estimation  Resonance  Switched  reluctance  motor  (SRM)  Test  pulse Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper proposes a method to obtain the rotor position of switched reluctance motors (SRMs) by means of voltage measurements. It is shown that the combination of a motor and a power-electronic converter defines a resonant circuit, comprising the motor phase inductances and the parasitic capacitance of converter switches, power cables, and motor phase windings. For salient machines, in general, the associated resonance frequency of the circuit depends on the rotor position. In the position-estimation method, an initial voltage distribution is imposed over the impedances of the resonant circuit after which the circuit is let to oscillate freely. During this phase of free oscillation, the induced voltage over a phase winding exhibits a damped oscillatory behavior, from which position information can be retrieved. An overview is given of the different possibilities to trigger the voltage resonance. It is shown that the proposed position-estimation method has favorable characteristics such as measurement of large-amplitude voltages, robustness against temperature deviations of motor and power semiconductors, very high update rates for the estimated position, and absence of sound and disturbance torque. Experimental results are given for a sensorless commutation scheme of an SRM under small load. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5371878

Analysis of passive boost power converter for three-phase SR drive / Liang, Jianing in IEEE transactions on industrial electronics, Vol. 57 N° 9 (Septembre 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 2961 - 2971 Titre : Analysis of passive boost power converter for three-phase SR drive Type de document : texte imprimé Auteurs : Liang, Jianing, Auteur ; Dong-Hee, Lee, Auteur ; Xu, Guoqing, Auteur Année de publication : 2011 Article en page(s) : pp. 2961 - 2971 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Fast  demagnetization  Passive  boost  converter  Switched  reluctance  motor  (SRM) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents a novel passive boost power converter and its analysis for a three-phase switched reluctance (SR) drive. The proposed simple passive circuit adds three diodes and one capacitor to the front end of a conventional asymmetric converter in order to obtain a high negative bias. Based on this passive power network, the terminal voltage of the converter side is at general dc-link voltage level in parallel mode and is up to a double dc-link voltage level in series mode. As a result, it can suppress the negative torque generation from the tail current and improve the output power. Combining a passive circuit with a three-phase asymmetric converter without phase-current overlap, the phase winding obtains the dc-link voltage in the excitation mode and the negative double dc-link voltage in the demagnetization mode. With the phase-current overlap, the dc-link voltage or the double dc-link voltage is dependent on the overlap current. The operation modes of the proposed converter are analyzed with a three-phase SR motor. The selection of the boost capacitor is considered, and a detailed analysis of current-overlap modes is presented. The compared simulation and experiments are done. The results verify the performance of the proposed converter. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5409583 [article] Analysis of passive boost power converter for three-phase SR drive [texte imprimé] / Liang, Jianing, Auteur ; Dong-Hee, Lee, Auteur ; Xu, Guoqing, Auteur . - 2011 . - pp. 2961 - 2971. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 2961 - 2971 Mots-clés : Fast  demagnetization  Passive  boost  converter  Switched  reluctance  motor  (SRM) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents a novel passive boost power converter and its analysis for a three-phase switched reluctance (SR) drive. The proposed simple passive circuit adds three diodes and one capacitor to the front end of a conventional asymmetric converter in order to obtain a high negative bias. Based on this passive power network, the terminal voltage of the converter side is at general dc-link voltage level in parallel mode and is up to a double dc-link voltage level in series mode. As a result, it can suppress the negative torque generation from the tail current and improve the output power. Combining a passive circuit with a three-phase asymmetric converter without phase-current overlap, the phase winding obtains the dc-link voltage in the excitation mode and the negative double dc-link voltage in the demagnetization mode. With the phase-current overlap, the dc-link voltage or the double dc-link voltage is dependent on the overlap current. The operation modes of the proposed converter are analyzed with a three-phase SR motor. The selection of the boost capacitor is considered, and a detailed analysis of current-overlap modes is presented. The compared simulation and experiments are done. The results verify the performance of the proposed converter. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5409583

An accurate inductance profile measurement technique for switched reluctance machines / Peng, Zhang in IEEE transactions on industrial electronics, Vol. 57 N° 9 (Septembre 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 2972 - 2979 Titre : An accurate inductance profile measurement technique for switched reluctance machines Type de document : texte imprimé Auteurs : Peng, Zhang, Auteur ; Cassani, Pablo A., Auteur ; Williamson, Sheldon S., Auteur Année de publication : 2011 Article en page(s) : pp. 2972 - 2979 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Inductance  Magnetic  saturation  Modeling  Motor  drives  Nonlinear  systems  Reluctance  machine  Testing Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Accurate modeling of switched reluctance machines (SRMs) is necessary in order to achieve satisfactory control performance. Due to their highly nonlinear characteristics, the exact inductance profile for SRMs in one electrical period ought to be obtained. The purpose of this paper is to propose an accurate method to model the SRM magnetization characteristic, representing the accurate inductance profile, in order to achieve higher control performance. Furthermore, the innovative method proposed in this paper addresses a diverse way to minimize overall losses, compared to conventional methods. Instead of using a specific apparatus for measurement, the proposed method directly uses the saturation feature of the phase inductance. This paper discusses the advantages and improvements of the proposed method compared to conventional methods. Finally, the results computed by finite-element analysis are compared with the experimental results in terms of SRM magnetization characteristics. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5456235 [article] An accurate inductance profile measurement technique for switched reluctance machines [texte imprimé] / Peng, Zhang, Auteur ; Cassani, Pablo A., Auteur ; Williamson, Sheldon S., Auteur . - 2011 . - pp. 2972 - 2979. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 2972 - 2979 Mots-clés : Inductance  Magnetic  saturation  Modeling  Motor  drives  Nonlinear  systems  Reluctance  machine  Testing Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Accurate modeling of switched reluctance machines (SRMs) is necessary in order to achieve satisfactory control performance. Due to their highly nonlinear characteristics, the exact inductance profile for SRMs in one electrical period ought to be obtained. The purpose of this paper is to propose an accurate method to model the SRM magnetization characteristic, representing the accurate inductance profile, in order to achieve higher control performance. Furthermore, the innovative method proposed in this paper addresses a diverse way to minimize overall losses, compared to conventional methods. Instead of using a specific apparatus for measurement, the proposed method directly uses the saturation feature of the phase inductance. This paper discusses the advantages and improvements of the proposed method compared to conventional methods. Finally, the results computed by finite-element analysis are compared with the experimental results in terms of SRM magnetization characteristics. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5456235

Multi-objective optimization design of In-wheel switched reluctance motors in electric vehicles / Xue, X. D. in IEEE transactions on industrial electronics, Vol. 57 N° 9 (Septembre 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 2980 - 2987 Titre : Multi-objective optimization design of In-wheel switched reluctance motors in electric vehicles Type de document : texte imprimé Auteurs : Xue, X. D., Auteur ; Cheng, K. W. E., Auteur ; T. W. Ng, Auteur Année de publication : 2011 Article en page(s) : pp. 2980 - 2987 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Design  Electric  vehicles  In-wheel  Optimization  Switched  reluctance  motors  (SRMs) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : The method of the optimization design with multi-objectives for switched reluctance motors (SRMs) in electric vehicles (EVs) is proposed in this paper. It is desired that electric motors for EVs have high torque, high efficiency, and high torque density. Thus, the developed optimization function is selected as the correct compromise between the maximum average torque, maximum average torque per copper loss, and maximum average torque per motor lamination volume, by using three weight factors and three base values. The stator and rotor pole arc angles are selected as the optimized variables. Furthermore, the authors also discuss the design requirements and some constraints on the optimization design. The results of the optimization design show that the proposed method meets the requirements of EVs on electric motors well. A prototype of the optimally designed in-wheel SRM for EVs has been manufactured. This paper provides a valuable method to implement the optimal design of SRMs for EVs. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5545589 [article] Multi-objective optimization design of In-wheel switched reluctance motors in electric vehicles [texte imprimé] / Xue, X. D., Auteur ; Cheng, K. W. E., Auteur ; T. W. Ng, Auteur . - 2011 . - pp. 2980 - 2987. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 2980 - 2987 Mots-clés : Design  Electric  vehicles  In-wheel  Optimization  Switched  reluctance  motors  (SRMs) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : The method of the optimization design with multi-objectives for switched reluctance motors (SRMs) in electric vehicles (EVs) is proposed in this paper. It is desired that electric motors for EVs have high torque, high efficiency, and high torque density. Thus, the developed optimization function is selected as the correct compromise between the maximum average torque, maximum average torque per copper loss, and maximum average torque per motor lamination volume, by using three weight factors and three base values. The stator and rotor pole arc angles are selected as the optimized variables. Furthermore, the authors also discuss the design requirements and some constraints on the optimization design. The results of the optimization design show that the proposed method meets the requirements of EVs on electric motors well. A prototype of the optimally designed in-wheel SRM for EVs has been manufactured. This paper provides a valuable method to implement the optimal design of SRMs for EVs. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5545589

Design and optimization of a switched reluctance motor driving a compressor for a PEM fuel-cell system for automotive applications / Raminosoa, Tsarafidy in IEEE transactions on industrial electronics, Vol. 57 N° 9 (Septembre 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 2988 - 2997 Titre : Design and optimization of a switched reluctance motor driving a compressor for a PEM fuel-cell system for automotive applications Type de document : texte imprimé Auteurs : Raminosoa, Tsarafidy, Auteur ; Blunier, Benjamin, Auteur ; Fodorean, Daniel, Auteur Année de publication : 2011 Article en page(s) : pp. 2988 - 2997 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Compressor  Fuel  cell  Genetic  algorithm  Optimization  Switched  reluctance  machines Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper describes the design of a high-speed three-phase switched reluctance machine to drive a compressor for the air management of a fuel-cell system for automotive applications. The machine geometry is optimized by means of a finite-element method coupled to a genetic algorithm. The performance of the optimized machine is evaluated, taking into account the iron and air-friction losses. Some theoretical and numerical results are sustained by the measured ones in the same operating conditions. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5409655 [article] Design and optimization of a switched reluctance motor driving a compressor for a PEM fuel-cell system for automotive applications [texte imprimé] / Raminosoa, Tsarafidy, Auteur ; Blunier, Benjamin, Auteur ; Fodorean, Daniel, Auteur . - 2011 . - pp. 2988 - 2997. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 2988 - 2997 Mots-clés : Compressor  Fuel  cell  Genetic  algorithm  Optimization  Switched  reluctance  machines Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper describes the design of a high-speed three-phase switched reluctance machine to drive a compressor for the air management of a fuel-cell system for automotive applications. The machine geometry is optimized by means of a finite-element method coupled to a genetic algorithm. The performance of the optimized machine is evaluated, taking into account the iron and air-friction losses. Some theoretical and numerical results are sustained by the measured ones in the same operating conditions. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5409655

On real-time simulation for harmonic and flicker assessment of an industrial system with bulk nonlinear loads / Chang, Gary W. in IEEE transactions on industrial electronics, Vol. 57 N° 9 (Septembre 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 2998 - 3009 Titre : On real-time simulation for harmonic and flicker assessment of an industrial system with bulk nonlinear loads Type de document : texte imprimé Auteurs : Chang, Gary W., Auteur ; Liu, Yu-Jen, Auteur ; Dinavahi, Venkata, Auteur Année de publication : 2011 Article en page(s) : pp. 2998 - 3009 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Electric  arc  furnace  (EAF)  Flickers  Harmonics  Motor  drives  Power  quality  (PQ)  Real-time  simulation  (RTS) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents application experiences of real-time simulation (RTS) techniques for harmonic and flicker studies of an industrial power system, where the system and nonlinear loads are properly modeled. A PC-cluster-based real-time parallel simulator is implemented under MATLAB/SIMULINK, where the studied system consists of an ac electric arc furnace, dc and ac motor-drive loads, and the static var compensator. Guidelines for model partition of the studied system and the solver settings under an RTS environment are reported. In addition, the most commonly used offline simulation with variable-step solver and the actual field measurements are included for comparison. Results indicate that the RTS achieves satisfactory solution accuracy within much less execution time and can be applied for more complicated studies such as installing new nonlinear loads with different levels of model complexities or designing/tuning mitigation devices of power-quality disturbances, where the repeated time-consuming analysis is required. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5345724 [article] On real-time simulation for harmonic and flicker assessment of an industrial system with bulk nonlinear loads [texte imprimé] / Chang, Gary W., Auteur ; Liu, Yu-Jen, Auteur ; Dinavahi, Venkata, Auteur . - 2011 . - pp. 2998 - 3009. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 2998 - 3009 Mots-clés : Electric  arc  furnace  (EAF)  Flickers  Harmonics  Motor  drives  Power  quality  (PQ)  Real-time  simulation  (RTS) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents application experiences of real-time simulation (RTS) techniques for harmonic and flicker studies of an industrial power system, where the system and nonlinear loads are properly modeled. A PC-cluster-based real-time parallel simulator is implemented under MATLAB/SIMULINK, where the studied system consists of an ac electric arc furnace, dc and ac motor-drive loads, and the static var compensator. Guidelines for model partition of the studied system and the solver settings under an RTS environment are reported. In addition, the most commonly used offline simulation with variable-step solver and the actual field measurements are included for comparison. Results indicate that the RTS achieves satisfactory solution accuracy within much less execution time and can be applied for more complicated studies such as installing new nonlinear loads with different levels of model complexities or designing/tuning mitigation devices of power-quality disturbances, where the repeated time-consuming analysis is required. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5345724

Real-time simulation of grid-connected wind farms using physical aggregation / Jalili-Marandi, Vahid in IEEE transactions on industrial electronics, Vol. 57 N° 9 (Septembre 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3010 - 3021 Titre : Real-time simulation of grid-connected wind farms using physical aggregation Type de document : texte imprimé Auteurs : Jalili-Marandi, Vahid, Auteur ; Lok-Fu, Pak, Auteur ; Dinavahi, Venkata, Auteur Année de publication : 2011 Article en page(s) : pp. 3010 - 3021 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Distributed  computing  Power  system  simulation  Real-time  systems  Wind  energy Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : The electromagnetic transient (EMT) simulation of a power system interconnected with wind farms involves such intensive computations that fully digital real-time simulators are among the effective tools for performing such simulations. To practically exploit real-time simulators for the simulation of wind farms with numerous wind turbines, the application of aggregation techniques is inevitable. In this paper, a detailed EMT model of a grid-connected wind farm with ten doubly-fed-induction-generator-based General Electric 1.5-MW wind turbines has been implemented on an advanced PC-Cluster-based real-time simulator. Three levels of physical aggregation methods are presented to reduce the computational efforts of the real-time simulation while maintaining adequate accuracy. A combination of these aggregation methods with parallel processing allowed the real-time simulation to be carried out with a fixed time step of 50 μs and high accuracy. Various fault transient results are provided for all the aggregation levels and compared against results from the detailed wind farm model. The validity of the proposed methods and real-time simulation results has also been confirmed by comparing with offline simulation results in MATLAB/SIMULINK. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5345723 [article] Real-time simulation of grid-connected wind farms using physical aggregation [texte imprimé] / Jalili-Marandi, Vahid, Auteur ; Lok-Fu, Pak, Auteur ; Dinavahi, Venkata, Auteur . - 2011 . - pp. 3010 - 3021. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3010 - 3021 Mots-clés : Distributed  computing  Power  system  simulation  Real-time  systems  Wind  energy Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : The electromagnetic transient (EMT) simulation of a power system interconnected with wind farms involves such intensive computations that fully digital real-time simulators are among the effective tools for performing such simulations. To practically exploit real-time simulators for the simulation of wind farms with numerous wind turbines, the application of aggregation techniques is inevitable. In this paper, a detailed EMT model of a grid-connected wind farm with ten doubly-fed-induction-generator-based General Electric 1.5-MW wind turbines has been implemented on an advanced PC-Cluster-based real-time simulator. Three levels of physical aggregation methods are presented to reduce the computational efforts of the real-time simulation while maintaining adequate accuracy. A combination of these aggregation methods with parallel processing allowed the real-time simulation to be carried out with a fixed time step of 50 μs and high accuracy. Various fault transient results are provided for all the aggregation levels and compared against results from the detailed wind farm model. The validity of the proposed methods and real-time simulation results has also been confirmed by comparing with offline simulation results in MATLAB/SIMULINK. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5345723

Optimum design of interphase reactor with double-tap changer applied to multipulse diode rectifier / Shiyan, Yang in IEEE transactions on industrial electronics, Vol. 57 N° 9 (Septembre 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3022 - 3029 Titre : Optimum design of interphase reactor with double-tap changer applied to multipulse diode rectifier Type de document : texte imprimé Auteurs : Shiyan, Yang, Auteur ; Fangang, Meng, Auteur ; Wei, Yang, Auteur Année de publication : 2011 Article en page(s) : pp. 3022 - 3029 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Double-tag  changer  Interphase  reactor  (IPR)  Multipulse  rectifier  Optimum  turns  ratio Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : In this paper, the optimum turns ratio of an interphase reactor (IPR) with a double-tap changer is presented with mathematical analysis. The relation between the total harmonic distortion (THD) of the input current and the turns ratio is introduced, and based on the relation, the optimum turns ratio when the THD is minimal is obtained. Via another relation between the ripple coefficients of the output voltage and the turns ratio, the optimum turns ratio is derived when the ripple coefficient is minimal. Meanwhile, using the optimum turns ratio, a new formula to calculate the critical value of IPR is written. Some computer simulation results and experiments are included to support the theoretical analysis of optimum design. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5371863 [article] Optimum design of interphase reactor with double-tap changer applied to multipulse diode rectifier [texte imprimé] / Shiyan, Yang, Auteur ; Fangang, Meng, Auteur ; Wei, Yang, Auteur . - 2011 . - pp. 3022 - 3029. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3022 - 3029 Mots-clés : Double-tag  changer  Interphase  reactor  (IPR)  Multipulse  rectifier  Optimum  turns  ratio Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : In this paper, the optimum turns ratio of an interphase reactor (IPR) with a double-tap changer is presented with mathematical analysis. The relation between the total harmonic distortion (THD) of the input current and the turns ratio is introduced, and based on the relation, the optimum turns ratio when the THD is minimal is obtained. Via another relation between the ripple coefficients of the output voltage and the turns ratio, the optimum turns ratio is derived when the ripple coefficient is minimal. Meanwhile, using the optimum turns ratio, a new formula to calculate the critical value of IPR is written. Some computer simulation results and experiments are included to support the theoretical analysis of optimum design. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5371863

A generalized half-wave symmetry SHE-PWM formulation for multilevel voltage inverters / Wanmin, Fei in IEEE transactions on industrial electronics, Vol. 57 N° 9 (Septembre 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3030 - 3038 Titre : A generalized half-wave symmetry SHE-PWM formulation for multilevel voltage inverters Type de document : texte imprimé Auteurs : Wanmin, Fei, Auteur ; Xiaoli, Du, Auteur ; Wu, Bin, Auteur Année de publication : 2011 Article en page(s) : pp. 3030 - 3038 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Half-cycle  symmetry  Multilevel  inverter  Pulsewidth  modulation  (PWM)  Selective  harmonic  elimination  (SHE) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Half-cycle symmetry selective-harmonic-elimination pulsewidth-modulation (SHE-PWM) problems may have a large number of valid solutions, which are beneficial to the optimization design. This paper proposes a novel generalized formulation of half-cycle symmetry SHE-PWM problems for multilevel inverters. The advantages of the proposed formulation include simplicity in format, flexibility in PWM waveforms, and a broad solution space. A method to obtain initial values for the SHE-PWM equations according to the reference modulation index M and the initial phase angle of output fundamental voltage is proposed and investigated thoroughly. Take a five-level inverter with M = 0.75 as an example; six sets of solutions for two typical initial phase angles of 0° and 90° are presented. Simulations and experiments are carried out. It is demonstrated that the experimental results agree well with simulated ones, which proves the validity and practicability of the new method proposed. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5345726 [article] A generalized half-wave symmetry SHE-PWM formulation for multilevel voltage inverters [texte imprimé] / Wanmin, Fei, Auteur ; Xiaoli, Du, Auteur ; Wu, Bin, Auteur . - 2011 . - pp. 3030 - 3038. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3030 - 3038 Mots-clés : Half-cycle  symmetry  Multilevel  inverter  Pulsewidth  modulation  (PWM)  Selective  harmonic  elimination  (SHE) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Half-cycle symmetry selective-harmonic-elimination pulsewidth-modulation (SHE-PWM) problems may have a large number of valid solutions, which are beneficial to the optimization design. This paper proposes a novel generalized formulation of half-cycle symmetry SHE-PWM problems for multilevel inverters. The advantages of the proposed formulation include simplicity in format, flexibility in PWM waveforms, and a broad solution space. A method to obtain initial values for the SHE-PWM equations according to the reference modulation index M and the initial phase angle of output fundamental voltage is proposed and investigated thoroughly. Take a five-level inverter with M = 0.75 as an example; six sets of solutions for two typical initial phase angles of 0° and 90° are presented. Simulations and experiments are carried out. It is demonstrated that the experimental results agree well with simulated ones, which proves the validity and practicability of the new method proposed. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5345726

Investigation of control strategies for variable-speed pump-turbine units by using a simplified model of the converters / Pannatier, Yves in IEEE transactions on industrial electronics, Vol. 57 N° 9 (Septembre 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3039 - 3049 Titre : Investigation of control strategies for variable-speed pump-turbine units by using a simplified model of the converters Type de document : texte imprimé Auteurs : Pannatier, Yves, Auteur ; Kawkabani, Basile, Auteur ; Nicolet, Christophe, Auteur Année de publication : 2011 Article en page(s) : pp. 3039 - 3049 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Control  strategy  Dynamic  simulation  Induction  machine  Power  converter  Pulsewidth  modulation  (PWM)  Pump  turbine  Torque  Variable  speed Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents the modeling, simulation, and analysis of the dynamic behavior of a fictitious 2 × 320 MW variable-speed pump-turbine power plant, including a hydraulic system, electrical equipment, rotating inertias, and control systems. The modeling of the hydraulic and electrical components of the power plant is presented. The dynamic performances of a control strategy in generating mode and one in pumping mode are investigated by the simulation of the complete models in the case of change of active power set points. Then, a pseudocontinuous model of the converters feeding the rotor circuits is described. Due to this simplification, the simulation time can be reduced drastically (approximately factor 60). A first validation of the simplified model of the converters is obtained by comparison of the simulated results coming from the simplified and complete models for different modes of operation of the power plant. Experimental results performed on a 2.2-kW low-power test bench are also compared with the simulated results coming from both complete and simplified models related to this case and confirm the validity of the proposed simplified approach for the converters. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5342518 [article] Investigation of control strategies for variable-speed pump-turbine units by using a simplified model of the converters [texte imprimé] / Pannatier, Yves, Auteur ; Kawkabani, Basile, Auteur ; Nicolet, Christophe, Auteur . - 2011 . - pp. 3039 - 3049. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3039 - 3049 Mots-clés : Control  strategy  Dynamic  simulation  Induction  machine  Power  converter  Pulsewidth  modulation  (PWM)  Pump  turbine  Torque  Variable  speed Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents the modeling, simulation, and analysis of the dynamic behavior of a fictitious 2 × 320 MW variable-speed pump-turbine power plant, including a hydraulic system, electrical equipment, rotating inertias, and control systems. The modeling of the hydraulic and electrical components of the power plant is presented. The dynamic performances of a control strategy in generating mode and one in pumping mode are investigated by the simulation of the complete models in the case of change of active power set points. Then, a pseudocontinuous model of the converters feeding the rotor circuits is described. Due to this simplification, the simulation time can be reduced drastically (approximately factor 60). A first validation of the simplified model of the converters is obtained by comparison of the simulated results coming from the simplified and complete models for different modes of operation of the power plant. Experimental results performed on a 2.2-kW low-power test bench are also compared with the simulated results coming from both complete and simplified models related to this case and confirm the validity of the proposed simplified approach for the converters. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5342518

Parasitic effects of grounding paths on common-mode EMI filter's performance in power electronics systems / Shuo, Wang in IEEE transactions on industrial electronics, Vol. 57 N° 9 (Septembre 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3050 - 3059 Titre : Parasitic effects of grounding paths on common-mode EMI filter's performance in power electronics systems Type de document : texte imprimé Auteurs : Shuo, Wang, Auteur ; Maillet, Yoann Yorrick, Auteur ; Wang, Fei, Auteur Année de publication : 2011 Article en page(s) : pp. 3050 - 3059 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Electromagnetic-interference  (EMI)  filter  Grounding  Inductive  coupling  Motor  drive  Mutual  inductance  Parasitic Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : High-frequency common-mode (CM) electromagnetic-interference (EMI) noise is difficult to suppress in electronics systems. EMI filters are used to suppress CM noise, but their performance is greatly affected by the parasitic effects of the grounding paths. In this paper, the parasitic effects of the grounding paths on an EMI filter's performance are investigated in a motor-drive system. The effects of the mutual inductance between two grounding paths are explored. Guidelines for the grounding of CM EMI filters are derived. Simulations and experiments are finally carried out to verify the theoretical analysis. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5345721 [article] Parasitic effects of grounding paths on common-mode EMI filter's performance in power electronics systems [texte imprimé] / Shuo, Wang, Auteur ; Maillet, Yoann Yorrick, Auteur ; Wang, Fei, Auteur . - 2011 . - pp. 3050 - 3059. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3050 - 3059 Mots-clés : Electromagnetic-interference  (EMI)  filter  Grounding  Inductive  coupling  Motor  drive  Mutual  inductance  Parasitic Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : High-frequency common-mode (CM) electromagnetic-interference (EMI) noise is difficult to suppress in electronics systems. EMI filters are used to suppress CM noise, but their performance is greatly affected by the parasitic effects of the grounding paths. In this paper, the parasitic effects of the grounding paths on an EMI filter's performance are investigated in a motor-drive system. The effects of the mutual inductance between two grounding paths are explored. Guidelines for the grounding of CM EMI filters are derived. Simulations and experiments are finally carried out to verify the theoretical analysis. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5345721

Dual-tap chopping stabilizer with subcyclic AC soft switching / Rodriguez, Juan Carlos Campo in IEEE transactions on industrial electronics, Vol. 57 N° 9 (Septembre 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3060 - 3074 Titre : Dual-tap chopping stabilizer with subcyclic AC soft switching Type de document : texte imprimé Auteurs : Rodriguez, Juan Carlos Campo, Auteur ; Lopez, Joakin Vaquero, Auteur ; Olay, Carlos Cagigal, Auteur Année de publication : 2011 Article en page(s) : pp. 3060 - 3074 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : AC-AC  power  conversion  Ac  chopper  Ac  voltage  stabilizer  On-load  tap  changer  (OLTC)  Phase  regulator Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : AC voltage and phase regulators based on tap changers implemented with silicon-controlled rectifiers and triacs are widely used due to their robustness. Tap changing is achieved under natural commutation of semiconductors during the zero crossing of current, so that the response time exceeds the half cycle of the mains. High-power transistors and gate turn-off thyristor switches make new and faster tap commutation techniques possible to achieve several tap changes in one half cycle. This paper analyzes and synthesizes a dual-tap chopping stabilizer with a compensating transformer, with a pulsewidth-modulation frequency of about 5 kHz and a new soft-switching technique achieved by two auxiliary small-power branches. Unlike other supercyclic ac soft-switching solutions, the new commutating method allows zero current turn-off, several times in a half cycle, for any sign combination of voltage and current, thus reducing the electrical stress in the switches and the electromagnetic emission. Zero-crossing current detection is not needed. A technical study and an evaluation of the power of the required components are done on the commutation techniques that extend the application field of tap changers to the reduction of the fast perturbations of the mains as flicker, voltage harmonics, voltage oscillations, etc. Experimental results with insulated-gate bipolar transistor switches are obtained in a 1 kVA prototype. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5345739 [article] Dual-tap chopping stabilizer with subcyclic AC soft switching [texte imprimé] / Rodriguez, Juan Carlos Campo, Auteur ; Lopez, Joakin Vaquero, Auteur ; Olay, Carlos Cagigal, Auteur . - 2011 . - pp. 3060 - 3074. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3060 - 3074 Mots-clés : AC-AC  power  conversion  Ac  chopper  Ac  voltage  stabilizer  On-load  tap  changer  (OLTC)  Phase  regulator Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : AC voltage and phase regulators based on tap changers implemented with silicon-controlled rectifiers and triacs are widely used due to their robustness. Tap changing is achieved under natural commutation of semiconductors during the zero crossing of current, so that the response time exceeds the half cycle of the mains. High-power transistors and gate turn-off thyristor switches make new and faster tap commutation techniques possible to achieve several tap changes in one half cycle. This paper analyzes and synthesizes a dual-tap chopping stabilizer with a compensating transformer, with a pulsewidth-modulation frequency of about 5 kHz and a new soft-switching technique achieved by two auxiliary small-power branches. Unlike other supercyclic ac soft-switching solutions, the new commutating method allows zero current turn-off, several times in a half cycle, for any sign combination of voltage and current, thus reducing the electrical stress in the switches and the electromagnetic emission. Zero-crossing current detection is not needed. A technical study and an evaluation of the power of the required components are done on the commutation techniques that extend the application field of tap changers to the reduction of the fast perturbations of the mains as flicker, voltage harmonics, voltage oscillations, etc. Experimental results with insulated-gate bipolar transistor switches are obtained in a 1 kVA prototype. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5345739

Snubberless bidirectional DC–DC converter with new CLLC resonant tank featuring minimized switching loss / Wei, Chen in IEEE transactions on industrial electronics, Vol. 57 N° 9 (Septembre 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3075 - 3086 Titre : Snubberless bidirectional DC–DC converter with new CLLC resonant tank featuring minimized switching loss Type de document : texte imprimé Auteurs : Wei, Chen, Auteur ; Ping, Rong, Auteur ; Lu, Zhengyu, Auteur Année de publication : 2011 Article en page(s) : pp. 3075 - 3086 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Bidirectional  dc-dc  converter  (BDC)  Topology  combination  Zero-current  switching  (ZCS)  Zero-voltage  switching  (ZVS) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : A bidirectional DC-DC converter (BDC) with a new CLLC-type resonant tank, which features zero-voltage switching (ZVS) for the input inverting choppers and zero-current switching (ZCS) for the output rectifier switches, regardless of the direction of the power flow, is proposed in this paper. Possessing the very optimal ZVS +ZCS soft-switching feature, this proposed converter will have a minimized switching loss if all of the main switches are implemented with metal-oxide-semiconductor field-effect transistors, and thereby, the proposed converter is fully soft switched and totally snubberless. The detail operation principles, as well as the design considerations, are presented. The methodologies to develop a unidirectional ZVS+ZCS dc-dc converter for the corresponding pulsewidth modulation and frequency modulation converters are proposed. The approach on how to construct a fully soft-switched BDC has also been proposed and analyzed. Finally, a topology extension is made, and another fully soft-switched BDC is derived. A prototype, which interfaces the 400-48-V dc buses for the uninterrupted power supply system with a power rating of 500 VA, was developed to verify the validity and applicability of this proposed converter. The highest applicable conversion efficiencies for the bidirectional operational modes are exceeding 96%. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5342515 [article] Snubberless bidirectional DC–DC converter with new CLLC resonant tank featuring minimized switching loss [texte imprimé] / Wei, Chen, Auteur ; Ping, Rong, Auteur ; Lu, Zhengyu, Auteur . - 2011 . - pp. 3075 - 3086. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3075 - 3086 Mots-clés : Bidirectional  dc-dc  converter  (BDC)  Topology  combination  Zero-current  switching  (ZCS)  Zero-voltage  switching  (ZVS) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : A bidirectional DC-DC converter (BDC) with a new CLLC-type resonant tank, which features zero-voltage switching (ZVS) for the input inverting choppers and zero-current switching (ZCS) for the output rectifier switches, regardless of the direction of the power flow, is proposed in this paper. Possessing the very optimal ZVS +ZCS soft-switching feature, this proposed converter will have a minimized switching loss if all of the main switches are implemented with metal-oxide-semiconductor field-effect transistors, and thereby, the proposed converter is fully soft switched and totally snubberless. The detail operation principles, as well as the design considerations, are presented. The methodologies to develop a unidirectional ZVS+ZCS dc-dc converter for the corresponding pulsewidth modulation and frequency modulation converters are proposed. The approach on how to construct a fully soft-switched BDC has also been proposed and analyzed. Finally, a topology extension is made, and another fully soft-switched BDC is derived. A prototype, which interfaces the 400-48-V dc buses for the uninterrupted power supply system with a power rating of 500 VA, was developed to verify the validity and applicability of this proposed converter. The highest applicable conversion efficiencies for the bidirectional operational modes are exceeding 96%. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5342515

High-performance feedback control of electromagnetic vibratory feeder / Ribic, Aleksander I. in IEEE transactions on industrial electronics, Vol. 57 N° 9 (Septembre 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3087 - 3094 Titre : High-performance feedback control of electromagnetic vibratory feeder Type de document : texte imprimé Auteurs : Ribic, Aleksander I., Auteur ; Zeljko V. Despotovic, Auteur Année de publication : 2011 Article en page(s) : pp. 3087 - 3094 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Proportional  and  integral  control  State  observer  Vibration  control  Vibratory  feeder Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : In this paper, a high-performance feedback controller for an electromagnetic vibratory feeder is proposed. An electromagnetic actuator is driven by a switching circuit with pulsewidth as the control variable. The controller structure consists of a proportional-integral controller combined with a state observer. The controlled variable is the resonant frequency vibration amplitude obtained in real time from the state observer. The use of the state observer allows fast disturbance rejection and reference tracking in both directions (amplitude increase and decrease). Simulations and experimental results from the real device are presented. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5353708 [article] High-performance feedback control of electromagnetic vibratory feeder [texte imprimé] / Ribic, Aleksander I., Auteur ; Zeljko V. Despotovic, Auteur . - 2011 . - pp. 3087 - 3094. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3087 - 3094 Mots-clés : Proportional  and  integral  control  State  observer  Vibration  control  Vibratory  feeder Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : In this paper, a high-performance feedback controller for an electromagnetic vibratory feeder is proposed. An electromagnetic actuator is driven by a switching circuit with pulsewidth as the control variable. The controller structure consists of a proportional-integral controller combined with a state observer. The controlled variable is the resonant frequency vibration amplitude obtained in real time from the state observer. The use of the state observer allows fast disturbance rejection and reference tracking in both directions (amplitude increase and decrease). Simulations and experimental results from the real device are presented. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5353708

Nonresonant and resonant frequency-selectable induction-heating targets / Rodriguez, John I. in IEEE transactions on industrial electronics, Vol. 57 N° 9 (Septembre 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3095 - 3108 Titre : Nonresonant and resonant frequency-selectable induction-heating targets Type de document : texte imprimé Auteurs : Rodriguez, John I., Auteur ; Leeb, Steven B., Auteur Année de publication : 2011 Article en page(s) : pp. 3095 - 3108 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Induction  heating  Marx  inverter  RL  circuits  RLC  circuits Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper examines a scheme for developing frequency-selectable induction-heating targets for stimulating temperature-sensitive polymer gels. The phrase “frequency selectable” implies that each target has a frequency at which it heats preferentially in the presence of other targets. Targets using both nonresonant and resonant designs are discussed. In the case of nonresonant targets, single-turn conductors whose critical dimensions are small compared to their associated skin depth (over the frequency range of interest) are examined. One way to achieve frequency selectivity with these nonresonant targets is by designing each to have the same self-inductance while forcing the resistance of each target to differ from the previous one by a specified factor (α). In this way, a target driven at its R/L break-point frequency will heat by at least a factor of (α2 + 1)/(2 α) more than the remaining targets. In the resonant-target case, RLC circuits that are inductively coupled to a primary induction coil are examined. Frequency selectivity in resonant targets is achieved by designing each target to have a different resonant frequency. When such a target is driven at its resonant frequency, it will heat preferentially compared to the remaining targets. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5353742 [article] Nonresonant and resonant frequency-selectable induction-heating targets [texte imprimé] / Rodriguez, John I., Auteur ; Leeb, Steven B., Auteur . - 2011 . - pp. 3095 - 3108. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3095 - 3108 Mots-clés : Induction  heating  Marx  inverter  RL  circuits  RLC  circuits Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper examines a scheme for developing frequency-selectable induction-heating targets for stimulating temperature-sensitive polymer gels. The phrase “frequency selectable” implies that each target has a frequency at which it heats preferentially in the presence of other targets. Targets using both nonresonant and resonant designs are discussed. In the case of nonresonant targets, single-turn conductors whose critical dimensions are small compared to their associated skin depth (over the frequency range of interest) are examined. One way to achieve frequency selectivity with these nonresonant targets is by designing each to have the same self-inductance while forcing the resistance of each target to differ from the previous one by a specified factor (α). In this way, a target driven at its R/L break-point frequency will heat by at least a factor of (α2 + 1)/(2 α) more than the remaining targets. In the resonant-target case, RLC circuits that are inductively coupled to a primary induction coil are examined. Frequency selectivity in resonant targets is achieved by designing each target to have a different resonant frequency. When such a target is driven at its resonant frequency, it will heat preferentially compared to the remaining targets. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5353742

Analysis and applications of parasitic capacitance cancellation techniques for EMI suppression / Shuo, Wang in IEEE transactions on industrial electronics, Vol. 57 N° 9 (Septembre 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3109 - 3117 Titre : Analysis and applications of parasitic capacitance cancellation techniques for EMI suppression Type de document : texte imprimé Auteurs : Shuo, Wang, Auteur ; Lee, Fred C., Auteur Année de publication : 2011 Article en page(s) : pp. 3109 - 3117 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Common-mode  (CM)  noise  Mutual  capacitance  Mutual  inductance  Parastic  capacitance  Parastic  capacitance  cancellation Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper reviews and analyzes five parasitic capacitance cancellation methods. Critical parameters and constraints determining the cancellation frequency ranges are identified, and the effective frequency range for each cancellation method is derived based on these constraints. Due to these constraints, each method has specific advantages for certain applications. The cancellation techniques, which all make use of either mutual capacitance or mutual inductance, are applied to different applications based on their advantages, and the experiments are carried out to verify the analysis. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5371820 [article] Analysis and applications of parasitic capacitance cancellation techniques for EMI suppression [texte imprimé] / Shuo, Wang, Auteur ; Lee, Fred C., Auteur . - 2011 . - pp. 3109 - 3117. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3109 - 3117 Mots-clés : Common-mode  (CM)  noise  Mutual  capacitance  Mutual  inductance  Parastic  capacitance  Parastic  capacitance  cancellation Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper reviews and analyzes five parasitic capacitance cancellation methods. Critical parameters and constraints determining the cancellation frequency ranges are identified, and the effective frequency range for each cancellation method is derived based on these constraints. Due to these constraints, each method has specific advantages for certain applications. The cancellation techniques, which all make use of either mutual capacitance or mutual inductance, are applied to different applications based on their advantages, and the experiments are carried out to verify the analysis. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5371820

Highly efficient single-phase transformerless inverters for grid-connected photovoltaic systems / Araujo, Samuel Vasconcelos in IEEE transactions on industrial electronics, Vol. 57 N° 9 (Septembre 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3118 - 3128 Titre : Highly efficient single-phase transformerless inverters for grid-connected photovoltaic systems Type de document : texte imprimé Auteurs : Araujo, Samuel Vasconcelos, Auteur ; Zacharias, Peter, Auteur ; Mallwitz, Regine, Auteur Année de publication : 2011 Article en page(s) : pp. 3118 - 3128 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Photovoltaic  (PV)  power  systems  Pulsewidth-modulated  (PWM)  inverters Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Driven by worldwide demand for renewable sources, the photovoltaic market saw in the last years a considerable amount of innovations regarding the construction and operation of inverters connected to the grid. One significant advance, among some that will be here discussed is, for example, the abolition of the galvanic isolation in inverters installed in Germany. There, transformerless topologies, like the H5 and Heric, can reach very high levels of efficiency and allow the best cost-benefit ratio for low-power grid-tied systems. This paper will follow this direction and propose a single-phase transformerless inverter circuit being composed of the association of two step-down converters. Each one modulates a half-wave of the output current, as the correct polarity of the connection to the grid is provided by low-frequency switches. Due to its straightforward design, reduced amount of semiconductors, and simple operation, it is possible to achieve a high level of efficiency and reliability. These and some other characteristics will be benchmarked against other existing circuits, being followed by a theoretical analysis on the properties of the proposed solution. The project of a laboratory prototype will be presented, along with a discussion about the obtained experimental results. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5345742 [article] Highly efficient single-phase transformerless inverters for grid-connected photovoltaic systems [texte imprimé] / Araujo, Samuel Vasconcelos, Auteur ; Zacharias, Peter, Auteur ; Mallwitz, Regine, Auteur . - 2011 . - pp. 3118 - 3128. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3118 - 3128 Mots-clés : Photovoltaic  (PV)  power  systems  Pulsewidth-modulated  (PWM)  inverters Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Driven by worldwide demand for renewable sources, the photovoltaic market saw in the last years a considerable amount of innovations regarding the construction and operation of inverters connected to the grid. One significant advance, among some that will be here discussed is, for example, the abolition of the galvanic isolation in inverters installed in Germany. There, transformerless topologies, like the H5 and Heric, can reach very high levels of efficiency and allow the best cost-benefit ratio for low-power grid-tied systems. This paper will follow this direction and propose a single-phase transformerless inverter circuit being composed of the association of two step-down converters. Each one modulates a half-wave of the output current, as the correct polarity of the connection to the grid is provided by low-frequency switches. Due to its straightforward design, reduced amount of semiconductors, and simple operation, it is possible to achieve a high level of efficiency and reliability. These and some other characteristics will be benchmarked against other existing circuits, being followed by a theoretical analysis on the properties of the proposed solution. The project of a laboratory prototype will be presented, along with a discussion about the obtained experimental results. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5345742

A new MPPT method for low-power solar energy harvesting / Lopez-Lapena, Oscar in IEEE transactions on industrial electronics, Vol. 57 N° 9 (Septembre 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3129 - 3138 Titre : A new MPPT method for low-power solar energy harvesting Type de document : texte imprimé Auteurs : Lopez-Lapena, Oscar, Auteur ; Penella, Maria Teresa, Auteur ; Gasulla, Manel, Auteur Année de publication : 2011 Article en page(s) : pp. 3129 - 3138 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Energy  harvesting  Maximum  power  point  tracking  (MPPT)  Solar  cells  Wireless  sensor  networks  (WSNs) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper describes a new maximum-power-point-tracking (MPPT) method focused on low-power (<; 1 W) photovoltaic (PV) panels. The static and dynamic performance is theoretically analyzed, and design criteria are provided. A prototype was implemented with a 500-mW PV panel, a commercial boost converter, and low-power components for the MPPT controller. Laboratory measurements were performed to assess the effectiveness of the proposed method. Tracking efficiency was higher than 99.6%. The overall efficiency was higher than 92% for a PV panel power higher than 100 mW. This is, in part, feasible due to the low power consumption of the MPPT controller, which was kept lower than 350 μW. The time response of the tracking circuit was tested to be around 1 s. Field measurements showed energy gains higher than 10.3% with respect to a direct-coupled solution for an ambient temperature of 26°C. Higher gains are expected for lower temperatures. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5345741 [article] A new MPPT method for low-power solar energy harvesting [texte imprimé] / Lopez-Lapena, Oscar, Auteur ; Penella, Maria Teresa, Auteur ; Gasulla, Manel, Auteur . - 2011 . - pp. 3129 - 3138. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3129 - 3138 Mots-clés : Energy  harvesting  Maximum  power  point  tracking  (MPPT)  Solar  cells  Wireless  sensor  networks  (WSNs) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper describes a new maximum-power-point-tracking (MPPT) method focused on low-power (<; 1 W) photovoltaic (PV) panels. The static and dynamic performance is theoretically analyzed, and design criteria are provided. A prototype was implemented with a 500-mW PV panel, a commercial boost converter, and low-power components for the MPPT controller. Laboratory measurements were performed to assess the effectiveness of the proposed method. Tracking efficiency was higher than 99.6%. The overall efficiency was higher than 92% for a PV panel power higher than 100 mW. This is, in part, feasible due to the low power consumption of the MPPT controller, which was kept lower than 350 μW. The time response of the tracking circuit was tested to be around 1 s. Field measurements showed energy gains higher than 10.3% with respect to a direct-coupled solution for an ambient temperature of 26°C. Higher gains are expected for lower temperatures. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5345741

Power supply based on carbon ultracapacitors for remote supervision systems / Pernia, Alberto M. in IEEE transactions on industrial electronics, Vol. 57 N° 9 (Septembre 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3139 - 3147 Titre : Power supply based on carbon ultracapacitors for remote supervision systems Type de document : texte imprimé Auteurs : Pernia, Alberto M., Auteur ; Menendez, S. A., Auteur ; Prieto, Miguel J., Auteur Année de publication : 2011 Article en page(s) : pp. 3139 - 3147 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Battery  Carbon  ultracapacitor  Photovoltaic  (PV)  solar  panels  Remote  supervision  system Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : The capacity to store energy in ultracapacitors or double-layer capacitors is about two orders of magnitude greater than that of ordinary capacitors. Also, their capability to receive and transfer power is greater than that of batteries in the same order of magnitude. These characteristics, together with their long life cycle ( $>$ 500 000) and their lack of maintenance work, make them a suitable choice in replacing batteries in pulsed or discontinued power consumption systems. This paper tries to evaluate the possibility to replace batteries with ultracapacitors in Global System for Mobile Communications (GSM)-based remote supervision systems using photovoltaic panels as main power source. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5545548 [article] Power supply based on carbon ultracapacitors for remote supervision systems [texte imprimé] / Pernia, Alberto M., Auteur ; Menendez, S. A., Auteur ; Prieto, Miguel J., Auteur . - 2011 . - pp. 3139 - 3147. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3139 - 3147 Mots-clés : Battery  Carbon  ultracapacitor  Photovoltaic  (PV)  solar  panels  Remote  supervision  system Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : The capacity to store energy in ultracapacitors or double-layer capacitors is about two orders of magnitude greater than that of ordinary capacitors. Also, their capability to receive and transfer power is greater than that of batteries in the same order of magnitude. These characteristics, together with their long life cycle ( $>$ 500 000) and their lack of maintenance work, make them a suitable choice in replacing batteries in pulsed or discontinued power consumption systems. This paper tries to evaluate the possibility to replace batteries with ultracapacitors in Global System for Mobile Communications (GSM)-based remote supervision systems using photovoltaic panels as main power source. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5545548

Global minimum torque ripple design for direct torque control of induction motor drives / Kuo-Kai, Shyu in IEEE transactions on industrial electronics, Vol. 57 N° 9 (Septembre 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3148 - 3156 Titre : Global minimum torque ripple design for direct torque control of induction motor drives Type de document : texte imprimé Auteurs : Kuo-Kai, Shyu, Auteur ; Juu-Kuh, Lin, Auteur ; Van-Truong, Pham, Auteur Année de publication : 2011 Article en page(s) : pp. 3148 - 3156 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Induction  motor  drives  Minimization  methods  Pulsewidth-modulated  inverters  Torque  control Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper proposes a simple but effective method to reduce the torque ripple for direct torque control (DTC) of induction motor drives. The proposed DTC provides a global minimum torque ripple, which satisfies the root-mean-square (rms) criteria of torque ripple. Such a global minimum torque ripple DTC has not been derived before. The proposed global minimum torque ripple DTC is a two-step design. The first step drives the torque error to zero at the end of the control period. Then, the second step reduces the torque bias and rms ripple by modifying the asymmetry switching patterns of the applied voltage vectors of the first step into symmetry ones. Theoretical analysis is provided to show that the torque ripple of the proposed DTC is a global minimum rms ripple. Furthermore, to verify the effectiveness of this study, a DSP-based experimental induction motor DTC drive system is built. Simulation and experimental results verify that the torque ripple performance has been improved. DEWEY : 621.38 ISSN : 0278--0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5371908 [article] Global minimum torque ripple design for direct torque control of induction motor drives [texte imprimé] / Kuo-Kai, Shyu, Auteur ; Juu-Kuh, Lin, Auteur ; Van-Truong, Pham, Auteur . - 2011 . - pp. 3148 - 3156. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3148 - 3156 Mots-clés : Induction  motor  drives  Minimization  methods  Pulsewidth-modulated  inverters  Torque  control Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper proposes a simple but effective method to reduce the torque ripple for direct torque control (DTC) of induction motor drives. The proposed DTC provides a global minimum torque ripple, which satisfies the root-mean-square (rms) criteria of torque ripple. Such a global minimum torque ripple DTC has not been derived before. The proposed global minimum torque ripple DTC is a two-step design. The first step drives the torque error to zero at the end of the control period. Then, the second step reduces the torque bias and rms ripple by modifying the asymmetry switching patterns of the applied voltage vectors of the first step into symmetry ones. Theoretical analysis is provided to show that the torque ripple of the proposed DTC is a global minimum rms ripple. Furthermore, to verify the effectiveness of this study, a DSP-based experimental induction motor DTC drive system is built. Simulation and experimental results verify that the torque ripple performance has been improved. DEWEY : 621.38 ISSN : 0278--0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5371908

Hybrid H [infinity]-besed wavelet-neutra-network tracking control for permanent-magnet synchronous motor servo drives / El-Sousy, Fayez F. M. in IEEE transactions on industrial electronics, Vol. 57 N° 9 (Septembre 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3157 - 3166 Titre : Hybrid H [infinity]-besed wavelet-neutra-network tracking control for permanent-magnet synchronous motor servo drives Type de document : texte imprimé Auteurs : El-Sousy, Fayez F. M., Auteur Année de publication : 2011 Article en page(s) : pp. 3157 - 3166 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Field-oriented  control  (FOC)  H(infinity)  tracking  control  Permanent-magnet  synchronous  motor  (PMSM)  Wavelet  neural  network  (WNN) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper proposes a hybrid H∞-based wavelet-neural-network (WNN) position tracking controller as a new robust motion-control system for permanent-magnet synchronous motor (PMSM) servo drives. The combinations of both WNN and H∞ controllers would insure the robustness and overcome the uncertainties of the servo drive. The new controller combines the merits of the H∞ control with robust performance and the WNN control (WNNC) which combines the capability of NNs for online learning ability and the capability of wavelet decomposition for identification ability. The online trained WNNC is utilized to predict the uncertain system dynamics to relax the requirement of uncertainty bound in the design of the H∞ controller. The WNNC generates an adaptive control signal to attain robust performance regardless of parameter uncertainties (PU) and load disturbances. Systematic methodology for both controllers' design is provided. A computer simulation is developed to demonstrate the effectiveness of the proposed WNN-based H∞ controller. An experimental system is established to validate the effectiveness of the drive system. All control algorithms are implemented in a TMS320C31 DSP-based control computer. The simulated and experimental results confirm that the new motion controller grants robust performance and precise dynamic response regardless of load disturbances and PMSM PU. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5371847 [article] Hybrid H [infinity]-besed wavelet-neutra-network tracking control for permanent-magnet synchronous motor servo drives [texte imprimé] / El-Sousy, Fayez F. M., Auteur . - 2011 . - pp. 3157 - 3166. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3157 - 3166 Mots-clés : Field-oriented  control  (FOC)  H(infinity)  tracking  control  Permanent-magnet  synchronous  motor  (PMSM)  Wavelet  neural  network  (WNN) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper proposes a hybrid H∞-based wavelet-neural-network (WNN) position tracking controller as a new robust motion-control system for permanent-magnet synchronous motor (PMSM) servo drives. The combinations of both WNN and H∞ controllers would insure the robustness and overcome the uncertainties of the servo drive. The new controller combines the merits of the H∞ control with robust performance and the WNN control (WNNC) which combines the capability of NNs for online learning ability and the capability of wavelet decomposition for identification ability. The online trained WNNC is utilized to predict the uncertain system dynamics to relax the requirement of uncertainty bound in the design of the H∞ controller. The WNNC generates an adaptive control signal to attain robust performance regardless of parameter uncertainties (PU) and load disturbances. Systematic methodology for both controllers' design is provided. A computer simulation is developed to demonstrate the effectiveness of the proposed WNN-based H∞ controller. An experimental system is established to validate the effectiveness of the drive system. All control algorithms are implemented in a TMS320C31 DSP-based control computer. The simulated and experimental results confirm that the new motion controller grants robust performance and precise dynamic response regardless of load disturbances and PMSM PU. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5371847

Neural-network-based low-speed-damping controller for stepper motor with an FPGA / Quy Ngoc, Le in IEEE transactions on industrial electronics, Vol. 57 N° 9 (Septembre 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3167 - 3180 Titre : Neural-network-based low-speed-damping controller for stepper motor with an FPGA Type de document : texte imprimé Auteurs : Quy Ngoc, Le, Auteur ; Jae-Wook, Jeon, Auteur Année de publication : 2011 Article en page(s) : pp. 3167 - 3180 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Lyapunov  function  Neural  network  (NN)  Resonant  speed  Stepper  motor Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : We present a low-speed-damping controller for a stepper motor using artificial neural networks (ANNs). This controller is designed to remove nonlinear disturbance at low speeds. The proposed controller improves the stepper motor performance at less than the resonance speed of the stepper motor system. Due to its ability to learn, the proposed controller can adapt to different resonant speed ranges without any identification process for system parameters. Conversely, we also introduce the implementation of an ANN-based controller, online backpropagation learning, and a microstep driver on a single field-programmable gate array. An implementation and experimental results are conducted to verify the feasibility and the effectiveness of the proposed controller. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5345729 [article] Neural-network-based low-speed-damping controller for stepper motor with an FPGA [texte imprimé] / Quy Ngoc, Le, Auteur ; Jae-Wook, Jeon, Auteur . - 2011 . - pp. 3167 - 3180. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3167 - 3180 Mots-clés : Lyapunov  function  Neural  network  (NN)  Resonant  speed  Stepper  motor Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : We present a low-speed-damping controller for a stepper motor using artificial neural networks (ANNs). This controller is designed to remove nonlinear disturbance at low speeds. The proposed controller improves the stepper motor performance at less than the resonance speed of the stepper motor system. Due to its ability to learn, the proposed controller can adapt to different resonant speed ranges without any identification process for system parameters. Conversely, we also introduce the implementation of an ANN-based controller, online backpropagation learning, and a microstep driver on a single field-programmable gate array. An implementation and experimental results are conducted to verify the feasibility and the effectiveness of the proposed controller. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5345729

Contactless energy transfer system with FPGA-controlled resonant converter / Moradewicz, Artur J. in IEEE transactions on industrial electronics, Vol. 57 N° 9 (Septembre 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3181 - 3190 Titre : Contactless energy transfer system with FPGA-controlled resonant converter Type de document : texte imprimé Auteurs : Moradewicz, Artur J., Auteur ; Kazmierkowski, Marian P., Auteur Année de publication : 2011 Article en page(s) : pp. 3181 - 3190 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Contactless  energy  transfer  (CET)  of  electrical  energy  Contactless  power  supply  Field-programmable  gate  array  (FPGA)  controls  Series  resonance  converter Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Power supply based on an inductive coupled contactless energy transfer system is presented in this paper. The energy is transferred using a rotatable transformer and a power electronic converter. To minimize total losses of the system, a series resonant compensation circuit is applied assuring zero-current switching condition for insulated-gate bipolar transistors. The analytical expression of the transfer dc voltage gain is presented and discussed. The novelty of the system lies in the application of a fully digital field-programmable-gate-array-based controller and a protection system. The resonant frequency is adjusted by a primary peak current regulator. Some simulation and experimental results illustrating the operation of the developed 3-kW 60-kHz laboratory prototype are given. Although the presented power supply with a rotatable transformer is constructed mainly for robotics and manipulators, the described design and control methodology has general validity and can be applied for a wide class of contactless power supply with core or coreless transformers. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5545549 [article] Contactless energy transfer system with FPGA-controlled resonant converter [texte imprimé] / Moradewicz, Artur J., Auteur ; Kazmierkowski, Marian P., Auteur . - 2011 . - pp. 3181 - 3190. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3181 - 3190 Mots-clés : Contactless  energy  transfer  (CET)  of  electrical  energy  Contactless  power  supply  Field-programmable  gate  array  (FPGA)  controls  Series  resonance  converter Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Power supply based on an inductive coupled contactless energy transfer system is presented in this paper. The energy is transferred using a rotatable transformer and a power electronic converter. To minimize total losses of the system, a series resonant compensation circuit is applied assuring zero-current switching condition for insulated-gate bipolar transistors. The analytical expression of the transfer dc voltage gain is presented and discussed. The novelty of the system lies in the application of a fully digital field-programmable-gate-array-based controller and a protection system. The resonant frequency is adjusted by a primary peak current regulator. Some simulation and experimental results illustrating the operation of the developed 3-kW 60-kHz laboratory prototype are given. Although the presented power supply with a rotatable transformer is constructed mainly for robotics and manipulators, the described design and control methodology has general validity and can be applied for a wide class of contactless power supply with core or coreless transformers. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5545549

A new control method for power-assisted wheelchair based on the surface myoelectric signal / Oonishi, Yuusuke in IEEE transactions on industrial electronics, Vol. 57 N° 9 (Septembre 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3191 - 3196 Titre : A new control method for power-assisted wheelchair based on the surface myoelectric signal Type de document : texte imprimé Auteurs : Oonishi, Yuusuke, Auteur ; Sehoon, Oh, Auteur ; Hori, yoichi, Auteur Année de publication : 2011 Article en page(s) : pp. 3191 - 3196 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Disturbance  observer  Electromyogram  (EMG)  Power-assisting  control  Wheelchair Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : In this paper, we design a new controller for power-assisted wheelchairs. Conventional power-assist controllers only focus on the amplification of the human input force using torque sensor. Our proposed controller does not use a torque sensor but an electromyogram sensor to estimate the driver's intention. We also use a disturbance observer to compensate for the lack of propelling torque information since it is difficult to simply regard the myoelectric signals as propelling torque. Then, we decide assist torque by combining the filtered myoelectric signals and the estimated human torque signal calculated by the disturbance observer. Experimental results show that the proposed power-assist method realizes fast, stable, and smooth acceleration. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5483205 [article] A new control method for power-assisted wheelchair based on the surface myoelectric signal [texte imprimé] / Oonishi, Yuusuke, Auteur ; Sehoon, Oh, Auteur ; Hori, yoichi, Auteur . - 2011 . - pp. 3191 - 3196. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3191 - 3196 Mots-clés : Disturbance  observer  Electromyogram  (EMG)  Power-assisting  control  Wheelchair Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : In this paper, we design a new controller for power-assisted wheelchairs. Conventional power-assist controllers only focus on the amplification of the human input force using torque sensor. Our proposed controller does not use a torque sensor but an electromyogram sensor to estimate the driver's intention. We also use a disturbance observer to compensate for the lack of propelling torque information since it is difficult to simply regard the myoelectric signals as propelling torque. Then, we decide assist torque by combining the filtered myoelectric signals and the estimated human torque signal calculated by the disturbance observer. Experimental results show that the proposed power-assist method realizes fast, stable, and smooth acceleration. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5483205

Robust tracking and vibration suppression for a two-inertia system by combining backstepping approach with disturbance observer / Jae Sung, Bang in IEEE transactions on industrial electronics, Vol. 57 N° 9 (Septembre 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3197 - 3206 Titre : Robust tracking and vibration suppression for a two-inertia system by combining backstepping approach with disturbance observer Type de document : texte imprimé Auteurs : Jae Sung, Bang, Auteur ; Hyungbo, Shim, Auteur ; Park, Sang Kyun, Auteur Année de publication : 2011 Article en page(s) : pp. 3197 - 3206 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Backstrepping  Disturbance  observer  (DOB)  Two-inertia  system Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : In this paper, we consider the problem of designing a robust controller for a two-inertia system which contains arbitrarily large (but bounded) model uncertainties and disturbances. The research is motivated by the fact that a two-inertia system represents most of an industrial robot arm system that has a flexible joint, for which vibration suppression and robust control against model uncertainties and external disturbances are very important. The proposed controller consists of two parts: the outer-loop controller designed by the backstepping approach and the inner-loop controller by the new partial disturbance observer (DOB). The DOB is responsible for compensating the input-matched uncertainties and disturbances, while the backstepping controller is designed for dealing with the rest. The proposed controller makes tracking error and vibration of the system suppressed within an arbitrarily small bound during operation time when full states are measured. The results are verified by simulations and experiments with a Luenberger observer. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5371876 [article] Robust tracking and vibration suppression for a two-inertia system by combining backstepping approach with disturbance observer [texte imprimé] / Jae Sung, Bang, Auteur ; Hyungbo, Shim, Auteur ; Park, Sang Kyun, Auteur . - 2011 . - pp. 3197 - 3206. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3197 - 3206 Mots-clés : Backstrepping  Disturbance  observer  (DOB)  Two-inertia  system Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : In this paper, we consider the problem of designing a robust controller for a two-inertia system which contains arbitrarily large (but bounded) model uncertainties and disturbances. The research is motivated by the fact that a two-inertia system represents most of an industrial robot arm system that has a flexible joint, for which vibration suppression and robust control against model uncertainties and external disturbances are very important. The proposed controller consists of two parts: the outer-loop controller designed by the backstepping approach and the inner-loop controller by the new partial disturbance observer (DOB). The DOB is responsible for compensating the input-matched uncertainties and disturbances, while the backstepping controller is designed for dealing with the rest. The proposed controller makes tracking error and vibration of the system suppressed within an arbitrarily small bound during operation time when full states are measured. The results are verified by simulations and experiments with a Luenberger observer. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5371876

A single-VCO fractional-N frequency synthesizer for digital TV tuners / Yang, Yu-Che in IEEE transactions on industrial electronics, Vol. 57 N° 9 (Septembre 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3207 - 3215 Titre : A single-VCO fractional-N frequency synthesizer for digital TV tuners Type de document : texte imprimé Auteurs : Yang, Yu-Che, Auteur ; Lu, Shey-Shi, Auteur Année de publication : 2011 Article en page(s) : pp. 3207 - 3215 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Advanced  television  systems  committee  (ATSC)  Digital  television  (DTV)  Digital  videobroadcasting-terrestrial  (DVB-T)  Fractional-N  frequency  synthesizer  and  phase-locked  loops  (PLLs)  Integrated  services  digital  broadcasting-terrestrial  (ISDB-T)  Tuner Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : A single-voltage-controlled-oscillator (VCO) fractional-N frequency synthesizer is designed for Advanced Television Systems Committee, Digital Video Broadcasting-Terrestrial, and Integrated Services Digital Broadcasting-Terrestrial digital television tuners. This frequency synthesizer can cover all the frequency bands for all three standards with only one VCO, and thus, the chip area as well as the power consumption can be greatly reduced. Different channel spacing requirements can be fulfilled by fractional synthesis. A dynamic frequency calibration loop is also used to automatically choose the coarse setting of the VCO. The synthesizer was fabricated in a standard 0.13-μm complementary metal-oxide-semiconductor process and draws 14 mA from a 1.2-V supply. The measured phase noise is lower than -80 dBc/Hz from 1 to 100 kHz offset and -100 dBc/Hz at 1 MHz offset. The active area of the frequency synthesizer is smaller than 0.54 mm2. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5371881 [article] A single-VCO fractional-N frequency synthesizer for digital TV tuners [texte imprimé] / Yang, Yu-Che, Auteur ; Lu, Shey-Shi, Auteur . - 2011 . - pp. 3207 - 3215. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3207 - 3215 Mots-clés : Advanced  television  systems  committee  (ATSC)  Digital  television  (DTV)  Digital  videobroadcasting-terrestrial  (DVB-T)  Fractional-N  frequency  synthesizer  and  phase-locked  loops  (PLLs)  Integrated  services  digital  broadcasting-terrestrial  (ISDB-T)  Tuner Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : A single-voltage-controlled-oscillator (VCO) fractional-N frequency synthesizer is designed for Advanced Television Systems Committee, Digital Video Broadcasting-Terrestrial, and Integrated Services Digital Broadcasting-Terrestrial digital television tuners. This frequency synthesizer can cover all the frequency bands for all three standards with only one VCO, and thus, the chip area as well as the power consumption can be greatly reduced. Different channel spacing requirements can be fulfilled by fractional synthesis. A dynamic frequency calibration loop is also used to automatically choose the coarse setting of the VCO. The synthesizer was fabricated in a standard 0.13-μm complementary metal-oxide-semiconductor process and draws 14 mA from a 1.2-V supply. The measured phase noise is lower than -80 dBc/Hz from 1 to 100 kHz offset and -100 dBc/Hz at 1 MHz offset. The active area of the frequency synthesizer is smaller than 0.54 mm2. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5371881

Solar-powered automated road surveillance system for speed violation detection / Celik, Turgay in IEEE transactions on industrial electronics, Vol. 57 N° 9 (Septembre 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3216 - 3227 Titre : Solar-powered automated road surveillance system for speed violation detection Type de document : texte imprimé Auteurs : Celik, Turgay, Auteur ; Kusetogullari, Huseyin, Auteur Année de publication : 2011 Article en page(s) : pp. 3216 - 3227 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Adaptive  thresholding  Background  subtraction  Color  modeling  Image  processing  Interframe  difference  Licence  plate  region  detection  Moving  object  detection  Solar  energy  Tracking  Vehicle  speed  measurement  Wireless  communication Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : In this paper, a real-time solar-powered road surveillance system is proposed to detect and report moving vehicles that violate the speed limit. The system is designed to operate as a standalone with no connection to the main power line and the wired communication networks. It is powered by a battery array that is charged through solar panels. The data communication with the authorized remote station is achieved via wireless communication technology. A dedicated digital signal processing chip is used to exploit computationally inexpensive image-processing techniques over the video sequence captured from the fixed position video camera for estimating the speed of the moving vehicles. The moving vehicles are detected by analyzing the binary image sequences that are constructed from the captured frames by employing the interframe difference or the background subtraction techniques. A novel adaptive thresholding method is proposed to binarize the outputs from the interframe difference and the background subtraction techniques. The detected moving vehicles are tracked to estimate their speeds. The images of the speeding vehicles are further analyzed to detect license plate image regions according to the predefined color information of the license plates in Northern Cyprus. The detected license plate image regions are reported to the authorized remote station. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5371869 [article] Solar-powered automated road surveillance system for speed violation detection [texte imprimé] / Celik, Turgay, Auteur ; Kusetogullari, Huseyin, Auteur . - 2011 . - pp. 3216 - 3227. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3216 - 3227 Mots-clés : Adaptive  thresholding  Background  subtraction  Color  modeling  Image  processing  Interframe  difference  Licence  plate  region  detection  Moving  object  detection  Solar  energy  Tracking  Vehicle  speed  measurement  Wireless  communication Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : In this paper, a real-time solar-powered road surveillance system is proposed to detect and report moving vehicles that violate the speed limit. The system is designed to operate as a standalone with no connection to the main power line and the wired communication networks. It is powered by a battery array that is charged through solar panels. The data communication with the authorized remote station is achieved via wireless communication technology. A dedicated digital signal processing chip is used to exploit computationally inexpensive image-processing techniques over the video sequence captured from the fixed position video camera for estimating the speed of the moving vehicles. The moving vehicles are detected by analyzing the binary image sequences that are constructed from the captured frames by employing the interframe difference or the background subtraction techniques. A novel adaptive thresholding method is proposed to binarize the outputs from the interframe difference and the background subtraction techniques. The detected moving vehicles are tracked to estimate their speeds. The images of the speeding vehicles are further analyzed to detect license plate image regions according to the predefined color information of the license plates in Northern Cyprus. The detected license plate image regions are reported to the authorized remote station. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5371869

Stable and transparent time-delayed teleoperation by direct acceleration waves / Yalcin, Baris in IEEE transactions on industrial electronics, Vol. 57 N° 9 (Septembre 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3228 - 3238 Titre : Stable and transparent time-delayed teleoperation by direct acceleration waves Type de document : texte imprimé Auteurs : Yalcin, Baris, Auteur ; Ohnishi, Kouhei, Auteur Année de publication : 2011 Article en page(s) : pp. 3228 - 3238 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Acceleration  control  Acceleration  waves  Haptics  Motion  control  Teleoperation  Time  delay  Transparency  Wave  variables Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : For time-delayed bilateral teleoperation systems, this paper presents a novel structure to considerably improve performance in terms of transparency and perception bandwidth, which are extremely low for passive systems, as well as force-position and velocity tracking on which delay control systems suffer both necessity for provision of identical initial conditions and drift problem. Performance improvement is carried out in three steps. The first step is the utilization of a four-channel wave-transmission structure that provides direct force and velocity feedbacks to each robot by asymmetric damping. Since the common dimension of wave variables is acceleration, the second step is the conversion of wave data into acceleration terms and the employment of acceleration control. The third step is the scaling of both the force- and position-based acceleration dimensions. Perception-bandwidth-limiting filters are used neither in wave space nor in control space. We showed the validity by experiments and superiority to previous systems by various comparative analyses. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5371818 [article] Stable and transparent time-delayed teleoperation by direct acceleration waves [texte imprimé] / Yalcin, Baris, Auteur ; Ohnishi, Kouhei, Auteur . - 2011 . - pp. 3228 - 3238. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 9 (Septembre 2010) . - pp. 3228 - 3238 Mots-clés : Acceleration  control  Acceleration  waves  Haptics  Motion  control  Teleoperation  Time  delay  Transparency  Wave  variables Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : For time-delayed bilateral teleoperation systems, this paper presents a novel structure to considerably improve performance in terms of transparency and perception bandwidth, which are extremely low for passive systems, as well as force-position and velocity tracking on which delay control systems suffer both necessity for provision of identical initial conditions and drift problem. Performance improvement is carried out in three steps. The first step is the utilization of a four-channel wave-transmission structure that provides direct force and velocity feedbacks to each robot by asymmetric damping. Since the common dimension of wave variables is acceleration, the second step is the conversion of wave data into acceleration terms and the employment of acceleration control. The third step is the scaling of both the force- and position-based acceleration dimensions. Perception-bandwidth-limiting filters are used neither in wave space nor in control space. We showed the validity by experiments and superiority to previous systems by various comparative analyses. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5371818

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