Dépouillements

Recent advances and industrial applications of multilevel converters / Kouro, Samir in IEEE transactions on industrial electronics, Vol. 57 N° 8 (Août 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2553 - 2580 Titre : Recent advances and industrial applications of multilevel converters Type de document : texte imprimé Auteurs : Kouro, Samir, Auteur ; Malinowski, Mariusz, Auteur ; Gopakumar, K., Auteur Année de publication : 2011 Article en page(s) : pp. 2553 - 2580 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Active  filters  (AFs)  Control  Flexible  AC  transmission  systems  (FACTS)  High-power  applications  High-voltage  direct-current  (HVDC)  transmission  Marine  propulsion  Modulation  Multilevel  converters  Photovoltaic  systems  Train  traction  Wind  energy  conversion Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Multilevel converters have been under research and development for more than three decades and have found successful industrial application. However, this is still a technology under development, and many new contributions and new commercial topologies have been reported in the last few years. The aim of this paper is to group and review these recent contributions, in order to establish the current state of the art and trends of the technology, to provide readers with a comprehensive and insightful review of where multilevel converter technology stands and is heading. This paper first presents a brief overview of well-established multilevel converters strongly oriented to their current state in industrial applications to then center the discussion on the new converters that have made their way into the industry. In addition, new promising topologies are discussed. Recent advances made in modulation and control of multilevel converters are also addressed. A great part of this paper is devoted to show nontraditional applications powered by multilevel converters and how multilevel converters are becoming an enabling technology in many industrial sectors. Finally, some future trends and challenges in the further development of this technology are discussed to motivate future contributions that address open problems and explore new possibilities. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5482117 [article] Recent advances and industrial applications of multilevel converters [texte imprimé] / Kouro, Samir, Auteur ; Malinowski, Mariusz, Auteur ; Gopakumar, K., Auteur . - 2011 . - pp. 2553 - 2580. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2553 - 2580 Mots-clés : Active  filters  (AFs)  Control  Flexible  AC  transmission  systems  (FACTS)  High-power  applications  High-voltage  direct-current  (HVDC)  transmission  Marine  propulsion  Modulation  Multilevel  converters  Photovoltaic  systems  Train  traction  Wind  energy  conversion Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Multilevel converters have been under research and development for more than three decades and have found successful industrial application. However, this is still a technology under development, and many new contributions and new commercial topologies have been reported in the last few years. The aim of this paper is to group and review these recent contributions, in order to establish the current state of the art and trends of the technology, to provide readers with a comprehensive and insightful review of where multilevel converter technology stands and is heading. This paper first presents a brief overview of well-established multilevel converters strongly oriented to their current state in industrial applications to then center the discussion on the new converters that have made their way into the industry. In addition, new promising topologies are discussed. Recent advances made in modulation and control of multilevel converters are also addressed. A great part of this paper is devoted to show nontraditional applications powered by multilevel converters and how multilevel converters are becoming an enabling technology in many industrial sectors. Finally, some future trends and challenges in the further development of this technology are discussed to motivate future contributions that address open problems and explore new possibilities. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5482117

Medium-voltage multilevel converters—state of the art, challenges, and requirements in industrial applications / Abu-Rub, Haitham in IEEE transactions on industrial electronics, Vol. 57 N° 8 (Août 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2581 - 2596 Titre : Medium-voltage multilevel converters—state of the art, challenges, and requirements in industrial applications Type de document : texte imprimé Auteurs : Abu-Rub, Haitham, Auteur ; Holtz, Joachim, Auteur ; Rodriguez, José, Auteur Année de publication : 2011 Article en page(s) : pp. 2581 - 2596 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Dual  multilevel  inverter  (MLI)  Low  switching  frequency  Medium-voltage  drives  Multilevel  inverters  Neutral-point-clamped  inverter  Synchronous  optimal  PWM Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper gives an overview of medium-voltage (MV) multilevel converters with a focus on achieving minimum harmonic distortion and high efficiency at low switching frequency operation. Increasing the power rating by minimizing switching frequency while still maintaining reasonable power quality is an important requirement and a persistent challenge for the industry. Existing solutions are discussed and analyzed based on their topologies, limitations, and control techniques. As a preferred option for future research and application, an inverter configuration based on three-level building blocks to generate five-level voltage waveforms is suggested. This paper shows that such an inverter may be operated at a very low switching frequency to achieve minimum on-state and dynamic device losses for highly efficient MV drive applications while maintaining low harmonic distortion. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5446354 [article] Medium-voltage multilevel converters—state of the art, challenges, and requirements in industrial applications [texte imprimé] / Abu-Rub, Haitham, Auteur ; Holtz, Joachim, Auteur ; Rodriguez, José, Auteur . - 2011 . - pp. 2581 - 2596. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2581 - 2596 Mots-clés : Dual  multilevel  inverter  (MLI)  Low  switching  frequency  Medium-voltage  drives  Multilevel  inverters  Neutral-point-clamped  inverter  Synchronous  optimal  PWM Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper gives an overview of medium-voltage (MV) multilevel converters with a focus on achieving minimum harmonic distortion and high efficiency at low switching frequency operation. Increasing the power rating by minimizing switching frequency while still maintaining reasonable power quality is an important requirement and a persistent challenge for the industry. Existing solutions are discussed and analyzed based on their topologies, limitations, and control techniques. As a preferred option for future research and application, an inverter configuration based on three-level building blocks to generate five-level voltage waveforms is suggested. This paper shows that such an inverter may be operated at a very low switching frequency to achieve minimum on-state and dynamic device losses for highly efficient MV drive applications while maintaining low harmonic distortion. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5446354

Modeling and control of the cross-connected intermediate-level voltage source inverter / Chaudhuri, Toufann in IEEE transactions on industrial electronics, Vol. 57 N° 8 (Août 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2597 - 2604 Titre : Modeling and control of the cross-connected intermediate-level voltage source inverter Type de document : texte imprimé Auteurs : Chaudhuri, Toufann, Auteur ; Rufer, Alfred, Auteur Année de publication : 2011 Article en page(s) : pp. 2597 - 2604 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Cross  connected  Multilevel  Phase  capacitors  Voltage  source  inverter Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Multilevel inverter applications have become more and more common. Multilevel topologies have now to serve new purposes, and interest is rising in new application fields. Recent multilevel technologies have the potential to significantly reduce the size of passive filters, thus increasing efficiency and power density. With the more stringent regulations concerning harmonic emissions and reliability concerns, more levels are needed to allow filterless operation while keeping a moderate switching frequency and simple structure. In this context, the new topological family of high-density advanced multilevel inverters, called cross-connected intermediate-level voltage source inverter, is introduced in this paper. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5280259 [article] Modeling and control of the cross-connected intermediate-level voltage source inverter [texte imprimé] / Chaudhuri, Toufann, Auteur ; Rufer, Alfred, Auteur . - 2011 . - pp. 2597 - 2604. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2597 - 2604 Mots-clés : Cross  connected  Multilevel  Phase  capacitors  Voltage  source  inverter Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Multilevel inverter applications have become more and more common. Multilevel topologies have now to serve new purposes, and interest is rising in new application fields. Recent multilevel technologies have the potential to significantly reduce the size of passive filters, thus increasing efficiency and power density. With the more stringent regulations concerning harmonic emissions and reliability concerns, more levels are needed to allow filterless operation while keeping a moderate switching frequency and simple structure. In this context, the new topological family of high-density advanced multilevel inverters, called cross-connected intermediate-level voltage source inverter, is introduced in this paper. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5280259

Three-phase cascaded multilevel inverter using power cells with two inverter legs in series / Waltrich, Gierri in IEEE transactions on industrial electronics, Vol. 57 N° 8 (Août 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2605 - 2612 Titre : Three-phase cascaded multilevel inverter using power cells with two inverter legs in series Type de document : texte imprimé Auteurs : Waltrich, Gierri, Auteur ; Barbi, Ivo, Auteur Année de publication : 2011 Article en page(s) : pp. 2605 - 2612 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Cascade  systems  Inverters  Multilevel  systems  Pulsewidth  modulation  (PWM) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : In this paper, a modular three-phase multilevel inverter specially suited for electrical drive applications is proposed. Unlike the cascaded H-bridge inverter, this topology is based on power cells connected in cascade using two inverter legs in series. A detailed analysis of the structure and the development of design equations for the load voltage with n levels are carried out using pulsewidth-modulation phase-shifted multicarrier modulation. Simulations and experimental results for a 15-kW three-phase system, with nine voltage levels, validate the study presented. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5416282 [article] Three-phase cascaded multilevel inverter using power cells with two inverter legs in series [texte imprimé] / Waltrich, Gierri, Auteur ; Barbi, Ivo, Auteur . - 2011 . - pp. 2605 - 2612. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2605 - 2612 Mots-clés : Cascade  systems  Inverters  Multilevel  systems  Pulsewidth  modulation  (PWM) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : In this paper, a modular three-phase multilevel inverter specially suited for electrical drive applications is proposed. Unlike the cascaded H-bridge inverter, this topology is based on power cells connected in cascade using two inverter legs in series. A detailed analysis of the structure and the development of design equations for the load voltage with n levels are carried out using pulsewidth-modulation phase-shifted multicarrier modulation. Simulations and experimental results for a 15-kW three-phase system, with nine voltage levels, validate the study presented. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5416282

Five-level current-source inverters with buck–boost and inductive-current balancing capabilities / Gao, Feng in IEEE transactions on industrial electronics, Vol. 57 N° 8 (Août 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2613 - 2622 Titre : Five-level current-source inverters with buck–boost and inductive-current balancing capabilities Type de document : texte imprimé Auteurs : Gao, Feng, Auteur ; Poh Chiang Loh, Auteur ; Blaabjerg, Frede, Auteur Année de publication : 2011 Article en page(s) : pp. 2613 - 2622 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Buck-boost  Current-source  inverter  (CSI)  Multilevel  inverter Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents new five-level current-source inverters (CSIs) with voltage/current buck-boost capability, unlike existing five-level CSIs where only voltage-boost operation is supported. The proposed inverters attain self-inductive-current-balancing per switching cycle at their dc front ends without having to include additional balancing hardware or complex control manipulation. The inverters can conveniently be controlled by using the well-established phase-shifted carrier modulation scheme with only two additional linear references and a mapping logic table needed. Existing modulators can therefore be conveniently retrofitted for controlling the presented inverters. By appropriately coordinating the inverter gating signals, their implementations can be realized by using the least number of components without degrading performance. These enhanced features of the inverters have already been verified in simulation and experimentally using a scaled-down laboratory platform. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5229176 [article] Five-level current-source inverters with buck–boost and inductive-current balancing capabilities [texte imprimé] / Gao, Feng, Auteur ; Poh Chiang Loh, Auteur ; Blaabjerg, Frede, Auteur . - 2011 . - pp. 2613 - 2622. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2613 - 2622 Mots-clés : Buck-boost  Current-source  inverter  (CSI)  Multilevel  inverter Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents new five-level current-source inverters (CSIs) with voltage/current buck-boost capability, unlike existing five-level CSIs where only voltage-boost operation is supported. The proposed inverters attain self-inductive-current-balancing per switching cycle at their dc front ends without having to include additional balancing hardware or complex control manipulation. The inverters can conveniently be controlled by using the well-established phase-shifted carrier modulation scheme with only two additional linear references and a mapping logic table needed. Existing modulators can therefore be conveniently retrofitted for controlling the presented inverters. By appropriately coordinating the inverter gating signals, their implementations can be realized by using the least number of components without degrading performance. These enhanced features of the inverters have already been verified in simulation and experimentally using a scaled-down laboratory platform. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5229176

A different multilevel current-source inverter / Vazquez, Nimrod in IEEE transactions on industrial electronics, Vol. 57 N° 8 (Août 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2623 - 2632 Titre : A different multilevel current-source inverter Type de document : texte imprimé Auteurs : Vazquez, Nimrod, Auteur ; Lopez, Hector, Auteur ; Hernandez, Claudio, Auteur Année de publication : 2011 Article en page(s) : pp. 2623 - 2632 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Current  source  Dc/ac  converter  Low  harmonic  distortion  Multilevel  converter Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : DC/AC converters are widely used in several applications; traditionally, they can be classified in two types: the voltage-source inverters (VSIs) and the current-source inverters (CSIs). Their use depends on their application; however, some of them are common for both types of converters. Another possibility for the dc/ac conversion is the multilevel configuration, and the most analyzed is the VSI. In this paper, a different multilevel CSI is proposed: the paralleled configuration. To control the converter, a different sinusoidal pulse with modulation is employed; it consists of modifying the reference signal instead of using multiple carriers. Additionally, a balancing method for the inductor currents is given. The operation, analysis, and implementation are presented; moreover, simulation and experimental results are shown. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5226581 [article] A different multilevel current-source inverter [texte imprimé] / Vazquez, Nimrod, Auteur ; Lopez, Hector, Auteur ; Hernandez, Claudio, Auteur . - 2011 . - pp. 2623 - 2632. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2623 - 2632 Mots-clés : Current  source  Dc/ac  converter  Low  harmonic  distortion  Multilevel  converter Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : DC/AC converters are widely used in several applications; traditionally, they can be classified in two types: the voltage-source inverters (VSIs) and the current-source inverters (CSIs). Their use depends on their application; however, some of them are common for both types of converters. Another possibility for the dc/ac conversion is the multilevel configuration, and the most analyzed is the VSI. In this paper, a different multilevel CSI is proposed: the paralleled configuration. To control the converter, a different sinusoidal pulse with modulation is employed; it consists of modifying the reference signal instead of using multiple carriers. Additionally, a balancing method for the inductor currents is given. The operation, analysis, and implementation are presented; moreover, simulation and experimental results are shown. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5226581

Modulation, losses, and semiconductor requirements of modular multilevel converters / Rohner, Steffen in IEEE transactions on industrial electronics, Vol. 57 N° 8 (Août 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2633 - 2642 Titre : Modulation, losses, and semiconductor requirements of modular multilevel converters Type de document : texte imprimé Auteurs : Rohner, Steffen, Auteur ; Bernet, Steffen, Auteur ; Hiller, Marc, Auteur Année de publication : 2011 Article en page(s) : pp. 2633 - 2642 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Losses  Modulation  Multilevel  systems  Pulsewidth  modulation  (PWM)  Pulsewidth-modulated  power  converter Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper describes the operation of modular multilevel converter, an emerging and highly attractive topology for medium- and high-voltage applications. A new pulsewidth-modulation (PWM) scheme for an arbitrary number of voltage levels is introduced and evaluated. On the basis of this PWM scheme, the semiconductor losses are calculated, and the loss distribution is illustrated. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5229198 [article] Modulation, losses, and semiconductor requirements of modular multilevel converters [texte imprimé] / Rohner, Steffen, Auteur ; Bernet, Steffen, Auteur ; Hiller, Marc, Auteur . - 2011 . - pp. 2633 - 2642. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2633 - 2642 Mots-clés : Losses  Modulation  Multilevel  systems  Pulsewidth  modulation  (PWM)  Pulsewidth-modulated  power  converter Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper describes the operation of modular multilevel converter, an emerging and highly attractive topology for medium- and high-voltage applications. A new pulsewidth-modulation (PWM) scheme for an arbitrary number of voltage levels is introduced and evaluated. On the basis of this PWM scheme, the semiconductor losses are calculated, and the loss distribution is illustrated. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5229198

A single-phase multilevel inverter using switched series/parallel DC voltage sources / Hinago, Youhei in IEEE transactions on industrial electronics, Vol. 57 N° 8 (Août 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2643 - 2650 Titre : A single-phase multilevel inverter using switched series/parallel DC voltage sources Type de document : texte imprimé Auteurs : Hinago, Youhei, Auteur ; Koizumi, Hirotaka, Auteur Année de publication : 2011 Article en page(s) : pp. 2643 - 2650 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Cascaded  H-bridge  (CHB)  Hybrid  modulation  (HM)  Multilevel  inverter  Switched  series/parallel Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : A novel multilevel inverter with a small number of switching devices is proposed. It consists of an H-bridge and an inverter which outputs multilevel voltage by switching the dc voltage sources in series and in parallel. The proposed inverter can output more numbers of voltage levels in the same number of switching devices by using this conversion. The number of gate driving circuits is reduced, which leads to the reduction of the size and power consumption in the driving circuits. The total harmonic of the output waveform is also reduced. The proposed inverter is driven by the hybrid modulation method. In this paper, the circuit configuration, theoretical operation, Fourier analysis, simulation results with MATLAB/SIMULINK, and experimental results are shown. The experimental results accorded with the simulation results. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5229153 [article] A single-phase multilevel inverter using switched series/parallel DC voltage sources [texte imprimé] / Hinago, Youhei, Auteur ; Koizumi, Hirotaka, Auteur . - 2011 . - pp. 2643 - 2650. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2643 - 2650 Mots-clés : Cascaded  H-bridge  (CHB)  Hybrid  modulation  (HM)  Multilevel  inverter  Switched  series/parallel Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : A novel multilevel inverter with a small number of switching devices is proposed. It consists of an H-bridge and an inverter which outputs multilevel voltage by switching the dc voltage sources in series and in parallel. The proposed inverter can output more numbers of voltage levels in the same number of switching devices by using this conversion. The number of gate driving circuits is reduced, which leads to the reduction of the size and power consumption in the driving circuits. The total harmonic of the output waveform is also reduced. The proposed inverter is driven by the hybrid modulation method. In this paper, the circuit configuration, theoretical operation, Fourier analysis, simulation results with MATLAB/SIMULINK, and experimental results are shown. The experimental results accorded with the simulation results. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5229153

Compensation of nonlinearities in diode-clamped multilevel converters / Minshull, Stephen R. in IEEE transactions on industrial electronics, Vol. 57 N° 8 (Août 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2651 - 2658 Titre : Compensation of nonlinearities in diode-clamped multilevel converters Type de document : texte imprimé Auteurs : Minshull, Stephen R., Auteur ; Bingham, Christopher M., Auteur ; Stone, David A., Auteur Année de publication : 2011 Article en page(s) : pp. 2651 - 2658 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Dead-time  compensation  Multilevel  converter  Permanent-magnet  synchronous  motor  Space-vector  (SV)  modulation  (SVM) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : The application of multilevel converters for exciting permanent-magnet machines with low-phase inductance to dc-link voltage ratios facilitates a reduction in high-frequency switching harmonics. However, converter nonlinearities and, in-particular, on-state device voltage drops, create additional low-frequency harmonics. This paper therefore proposes a generic compensation scheme to accommodate the effects of such converter nonlinearities and, in doing so, improve the harmonic quality of the machine phase currents. Experimental results gathered from a prototype five-level diode-clamped converter validate the benefits of the proposed scheme by showing quantitative reductions in low-frequency harmonics. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5067304 [article] Compensation of nonlinearities in diode-clamped multilevel converters [texte imprimé] / Minshull, Stephen R., Auteur ; Bingham, Christopher M., Auteur ; Stone, David A., Auteur . - 2011 . - pp. 2651 - 2658. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2651 - 2658 Mots-clés : Dead-time  compensation  Multilevel  converter  Permanent-magnet  synchronous  motor  Space-vector  (SV)  modulation  (SVM) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : The application of multilevel converters for exciting permanent-magnet machines with low-phase inductance to dc-link voltage ratios facilitates a reduction in high-frequency switching harmonics. However, converter nonlinearities and, in-particular, on-state device voltage drops, create additional low-frequency harmonics. This paper therefore proposes a generic compensation scheme to accommodate the effects of such converter nonlinearities and, in doing so, improve the harmonic quality of the machine phase currents. Experimental results gathered from a prototype five-level diode-clamped converter validate the benefits of the proposed scheme by showing quantitative reductions in low-frequency harmonics. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5067304

An effective control technique for medium-voltage high-power induction motor fed by cascaded neutral-point-clamped inverter / Ge, Baoming in IEEE transactions on industrial electronics, Vol. 57 N° 8 (Août 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2659 - 2668 Titre : An effective control technique for medium-voltage high-power induction motor fed by cascaded neutral-point-clamped inverter Type de document : texte imprimé Auteurs : Ge, Baoming, Auteur ; Peng, Fang Zheng, Auteur ; de Almeida, Anibal T., Auteur Année de publication : 2011 Article en page(s) : pp. 2659 - 2668 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Cascaded  multilevel  (CML)  inverters  Medium-voltage  (MV)  drives  Speed  estimation  Vector  control Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : For a cascaded neutral-point-clamped (NPC) inverter applied to the medium-voltage high-power induction-motor (IM) drives, an effective control technique is proposed in this paper. The novel sinusoidal pulsewidth modulation (PWM) pulse-rotation-control approach, for a wide range of output voltage, provides a simple way to implement vector control for IM when the cascaded NPC inverter is employed. The proposed method presents great benefits to the cascaded NPC inverter. The output voltages and power of all inverter modules and the two series-capacitor dc voltages of each inverter module are perfectly balanced. Moreover, a low switch frequency of all inverter modules supports a synthesized high-frequency PWM phase voltage. The internal voltage drop of the inverter, due to the cascade structure of many insulated-gate bipolar transistor-diode modules' series connection, is analyzed, which causes the distorted phase voltages and currents at low speeds when the frequency and the output voltage are low. The current closed-loop control compensates the distortion of phase voltages and currents. A rotor-flux-oriented vector control is combined with back-electromotive-force-based model reference adaptive system speed estimation, which results in a speed closed-loop control. The voltage sensors together with the filters of changeable parameters ensure the precision of speed estimation for the whole frequency range. The experimental tests are carried out through an 800-kW 4160-V IM drive fed by the 1-MVA 6000-V 17-level cascaded NPC inverter. The results verify the proposed scheme. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5166488 [article] An effective control technique for medium-voltage high-power induction motor fed by cascaded neutral-point-clamped inverter [texte imprimé] / Ge, Baoming, Auteur ; Peng, Fang Zheng, Auteur ; de Almeida, Anibal T., Auteur . - 2011 . - pp. 2659 - 2668. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2659 - 2668 Mots-clés : Cascaded  multilevel  (CML)  inverters  Medium-voltage  (MV)  drives  Speed  estimation  Vector  control Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : For a cascaded neutral-point-clamped (NPC) inverter applied to the medium-voltage high-power induction-motor (IM) drives, an effective control technique is proposed in this paper. The novel sinusoidal pulsewidth modulation (PWM) pulse-rotation-control approach, for a wide range of output voltage, provides a simple way to implement vector control for IM when the cascaded NPC inverter is employed. The proposed method presents great benefits to the cascaded NPC inverter. The output voltages and power of all inverter modules and the two series-capacitor dc voltages of each inverter module are perfectly balanced. Moreover, a low switch frequency of all inverter modules supports a synthesized high-frequency PWM phase voltage. The internal voltage drop of the inverter, due to the cascade structure of many insulated-gate bipolar transistor-diode modules' series connection, is analyzed, which causes the distorted phase voltages and currents at low speeds when the frequency and the output voltage are low. The current closed-loop control compensates the distortion of phase voltages and currents. A rotor-flux-oriented vector control is combined with back-electromotive-force-based model reference adaptive system speed estimation, which results in a speed closed-loop control. The voltage sensors together with the filters of changeable parameters ensure the precision of speed estimation for the whole frequency range. The experimental tests are carried out through an 800-kW 4160-V IM drive fed by the 1-MVA 6000-V 17-level cascaded NPC inverter. The results verify the proposed scheme. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5166488

A novel space-vector current control based on circular hysteresis areas of a three-phase neutral-point-clamped inverter / Ghennam, Tarak in IEEE transactions on industrial electronics, Vol. 57 N° 8 (Août 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2669 - 2678 Titre : A novel space-vector current control based on circular hysteresis areas of a three-phase neutral-point-clamped inverter Type de document : texte imprimé Auteurs : Ghennam, Tarak, Auteur ; Berkouk, El Madjid, Auteur ; Francois, Bruno, Auteur Année de publication : 2011 Article en page(s) : pp. 2669 - 2678 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Circular  hysteresis  areas  Neutral-point  (NP)  voltage  control  Space-vector  current  control  (SVCC)  Three-phase  neutral-point-clamped  (NPC)  inverter Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents a novel space-vector current-control strategy for three-phase neutral-point (NP)-clamped inverters. The main task of this control technique is to force the actual current vector to reach the reference current vector. This original strategy consists in defining three circular hysteresis bands around the error vector. Then, according to the location of this error vector, a selection process of the next applied vector is used to minimize the error vector. The NP voltage is balanced by using the redundant inverter switching states. Simple lookup tables are required for area and sector detection, as well as for vector selection. The performance of the proposed control technique is demonstrated through simulation and experimental investigations. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5313855 [article] A novel space-vector current control based on circular hysteresis areas of a three-phase neutral-point-clamped inverter [texte imprimé] / Ghennam, Tarak, Auteur ; Berkouk, El Madjid, Auteur ; Francois, Bruno, Auteur . - 2011 . - pp. 2669 - 2678. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2669 - 2678 Mots-clés : Circular  hysteresis  areas  Neutral-point  (NP)  voltage  control  Space-vector  current  control  (SVCC)  Three-phase  neutral-point-clamped  (NPC)  inverter Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents a novel space-vector current-control strategy for three-phase neutral-point (NP)-clamped inverters. The main task of this control technique is to force the actual current vector to reach the reference current vector. This original strategy consists in defining three circular hysteresis bands around the error vector. Then, according to the location of this error vector, a selection process of the next applied vector is used to minimize the error vector. The NP voltage is balanced by using the redundant inverter switching states. Simple lookup tables are required for area and sector detection, as well as for vector selection. The performance of the proposed control technique is demonstrated through simulation and experimental investigations. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5313855

Hierarchical control of bridge-of-bridge multilevel power converters / Ludois, Dan C. in IEEE transactions on industrial electronics, Vol. 57 N° 8 (Août 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2679 - 2690 Titre : Hierarchical control of bridge-of-bridge multilevel power converters Type de document : texte imprimé Auteurs : Ludois, Dan C., Auteur ; Reed, Justin K., Auteur ; Venkataramanan, Giri, Auteur Année de publication : 2011 Article en page(s) : pp. 2679 - 2690 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Bridge  of  bridges  Cascaded  H-bridge  Current-source  inverter  (CSI)  Multilevel  power  converter  Simulation  Voltage-source  inverter  (VSI) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Multilevel converters are among the members of the family of power-converter topologies for realizing higher power levels and better waveform quality. In addition to the established topologies of neutral-point-clamped three-level and cascaded H-bridge converters, novel topologies that offer attractive features, such as ease of modularity and functionality, continue to be introduced. Among these, the bridge-of-bridge multilevel converters have the potential for realizing multimegawatt systems with ease. This paper is aimed at presenting a systematic approach to developing their dynamic and steady-state models, leading to a hierarchical-control approach that is intuitive to realize and versatile in application. This paper presents the dynamic and steady-state models and computer simulations that demonstrate the approach in dc-1φ/ac and 3φ/ac- 3φ/ac power-conversion applications. An experimental validation of the models using a dc-1φ/ac asymmetrical-half-bridge converter is presented. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5229155 [article] Hierarchical control of bridge-of-bridge multilevel power converters [texte imprimé] / Ludois, Dan C., Auteur ; Reed, Justin K., Auteur ; Venkataramanan, Giri, Auteur . - 2011 . - pp. 2679 - 2690. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2679 - 2690 Mots-clés : Bridge  of  bridges  Cascaded  H-bridge  Current-source  inverter  (CSI)  Multilevel  power  converter  Simulation  Voltage-source  inverter  (VSI) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Multilevel converters are among the members of the family of power-converter topologies for realizing higher power levels and better waveform quality. In addition to the established topologies of neutral-point-clamped three-level and cascaded H-bridge converters, novel topologies that offer attractive features, such as ease of modularity and functionality, continue to be introduced. Among these, the bridge-of-bridge multilevel converters have the potential for realizing multimegawatt systems with ease. This paper is aimed at presenting a systematic approach to developing their dynamic and steady-state models, leading to a hierarchical-control approach that is intuitive to realize and versatile in application. This paper presents the dynamic and steady-state models and computer simulations that demonstrate the approach in dc-1φ/ac and 3φ/ac- 3φ/ac power-conversion applications. An experimental validation of the models using a dc-1φ/ac asymmetrical-half-bridge converter is presented. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5229155

Model predictive control of multilevel cascaded H-bridge inverters / Corteés, Patricio in IEEE transactions on industrial electronics, Vol. 57 N° 8 (Août 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2691 - 2699 Titre : Model predictive control of multilevel cascaded H-bridge inverters Type de document : texte imprimé Auteurs : Corteés, Patricio, Auteur ; Wilson, Alan, Auteur ; Kouro, Samir, Auteur Année de publication : 2011 Article en page(s) : pp. 2691 - 2699 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Cascaded  H-bridge  (CHB)  Current  control  Inverters  Model  predictive  control  (MPC)  Multilevel  inverters  Predictive  control Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents a model predictive current control algorithm that is suitable for multilevel converters and its application to a three-phase cascaded H-bridge inverter. This control method uses a discrete-time model of the system to predict the future value of the current for all voltage vectors, and selects the vector which minimizes a cost function. Due to the large number of voltage vectors available in a multilevel inverter, a large number of calculations are needed, making difficult the implementation of this control in a standard control platform. A modified control strategy that considerably reduces the amount of calculations without affecting the system's performance is proposed. Experimental results for five- and nine-level inverters validate the proposed control algorithm. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5409615 [article] Model predictive control of multilevel cascaded H-bridge inverters [texte imprimé] / Corteés, Patricio, Auteur ; Wilson, Alan, Auteur ; Kouro, Samir, Auteur . - 2011 . - pp. 2691 - 2699. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2691 - 2699 Mots-clés : Cascaded  H-bridge  (CHB)  Current  control  Inverters  Model  predictive  control  (MPC)  Multilevel  inverters  Predictive  control Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents a model predictive current control algorithm that is suitable for multilevel converters and its application to a three-phase cascaded H-bridge inverter. This control method uses a discrete-time model of the system to predict the future value of the current for all voltage vectors, and selects the vector which minimizes a cost function. Due to the large number of voltage vectors available in a multilevel inverter, a large number of calculations are needed, making difficult the implementation of this control in a standard control platform. A modified control strategy that considerably reduces the amount of calculations without affecting the system's performance is proposed. Experimental results for five- and nine-level inverters validate the proposed control algorithm. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5409615

Fault-tolerant design and control strategy for cascaded H-bridge multilevel converter-based STATCOM / Wenchao, Song in IEEE transactions on industrial electronics, Vol. 57 N° 8 (Août 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2700 - 2708 Titre : Fault-tolerant design and control strategy for cascaded H-bridge multilevel converter-based STATCOM Type de document : texte imprimé Auteurs : Wenchao, Song, Auteur ; Huang, Alex Q., Auteur Année de publication : 2011 Article en page(s) : pp. 2700 - 2708 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Cascaded  H-bridge  multilevel  converter  (CHMC)  Fault  tolerance  Flexible  ac  transmission  systems  (FACTS)  H-bridge  building  block  (HBBB)  and  redundancy  Static  synchronous  compensator  (STATCOM) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Cascaded H-bridge multilevel converter (CHMC) is a promising topology for flexible ac transmission systems such as static synchronous compensator (STATCOM) applications. Attention was drawn to the issue of converter reliability due to the large number of power devices used in CHMC applications. This paper proposed an effective fault-tolerant strategy by using H-bridge building block (HBBB) redundancy in CHMC-based STATCOM. The operating principle and the control strategy of the fault tolerance are proposed and discussed. The controller design consideration for the fault-tolerant STATCOM is presented. The proposed fault-tolerant control strategy is implemented on a seven-level CHMC-based STATCOM simulation platform and a five-level CHMC-based STATCOM hardware prototype. Simulation and experimental results are illustrated to verify the feasibility of the proposed fault-tolerant design with the HBBB redundancy. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5332295 [article] Fault-tolerant design and control strategy for cascaded H-bridge multilevel converter-based STATCOM [texte imprimé] / Wenchao, Song, Auteur ; Huang, Alex Q., Auteur . - 2011 . - pp. 2700 - 2708. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2700 - 2708 Mots-clés : Cascaded  H-bridge  multilevel  converter  (CHMC)  Fault  tolerance  Flexible  ac  transmission  systems  (FACTS)  H-bridge  building  block  (HBBB)  and  redundancy  Static  synchronous  compensator  (STATCOM) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Cascaded H-bridge multilevel converter (CHMC) is a promising topology for flexible ac transmission systems such as static synchronous compensator (STATCOM) applications. Attention was drawn to the issue of converter reliability due to the large number of power devices used in CHMC applications. This paper proposed an effective fault-tolerant strategy by using H-bridge building block (HBBB) redundancy in CHMC-based STATCOM. The operating principle and the control strategy of the fault tolerance are proposed and discussed. The controller design consideration for the fault-tolerant STATCOM is presented. The proposed fault-tolerant control strategy is implemented on a seven-level CHMC-based STATCOM simulation platform and a five-level CHMC-based STATCOM hardware prototype. Simulation and experimental results are illustrated to verify the feasibility of the proposed fault-tolerant design with the HBBB redundancy. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5332295

Performance evaluation of fault-tolerant neutral-point-clamped converters / Ceballos, Salvador in IEEE transactions on industrial electronics, Vol. 57 N° 8 (Août 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2709 - 2718 Titre : Performance evaluation of fault-tolerant neutral-point-clamped converters Type de document : texte imprimé Auteurs : Ceballos, Salvador, Auteur ; Pou, Josep, Auteur ; Robles, Eider, Auteur Année de publication : 2011 Article en page(s) : pp. 2709 - 2718 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Fault  tolerance  Multilevel  converter  Neutral-point-clamped  (NPC)  converter  Reliability  Voltage  oscillation Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents a study of the fault tolerance capacity of a neutral-point-clamped converter. Different faults in power semiconductors are considered, and the available postfault states of the converter are shown. In regard of the operation limits, two possible solutions are presented. In these solutions, adding a reduced number of additional components, the behavior of the converter when a switch fails improves considerably. Furthermore, an analysis of the neutral-point voltage balancing conditions after a fault and reconfiguration of the system is also evaluated. Experimental results that prove the correct operation of the proposed topologies are shown. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5166482 [article] Performance evaluation of fault-tolerant neutral-point-clamped converters [texte imprimé] / Ceballos, Salvador, Auteur ; Pou, Josep, Auteur ; Robles, Eider, Auteur . - 2011 . - pp. 2709 - 2718. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2709 - 2718 Mots-clés : Fault  tolerance  Multilevel  converter  Neutral-point-clamped  (NPC)  converter  Reliability  Voltage  oscillation Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents a study of the fault tolerance capacity of a neutral-point-clamped converter. Different faults in power semiconductors are considered, and the available postfault states of the converter are shown. In regard of the operation limits, two possible solutions are presented. In these solutions, adding a reduced number of additional components, the behavior of the converter when a switch fails improves considerably. Furthermore, an analysis of the neutral-point voltage balancing conditions after a fault and reconfiguration of the system is also evaluated. Experimental results that prove the correct operation of the proposed topologies are shown. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5166482

Postfault control strategy for the hexagram inverter motor drive / Liang, Zhou in IEEE transactions on industrial electronics, Vol. 57 N° 8 (Août 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2719 - 2729 Titre : Postfault control strategy for the hexagram inverter motor drive Type de document : texte imprimé Auteurs : Liang, Zhou, Auteur ; Smedley, Keyue Ma, Auteur Année de publication : 2011 Article en page(s) : pp. 2719 - 2729 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Fault  tolerant  Medium  voltage  Motor  drives  Multilevel  converter Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper discusses the fault tolerance ability of the hexagram inverter motor drive. Due to its unique interconnecting nature, the hexagram inverter can tolerate one leg failure without modifying the power circuit topology. In the event of one leg failure, the control circuit can reconfigure the trigger signals to maintain a smooth torque operation at a reduced power level. When a leg fails within the inner interconnecting loop, no special postfault strategy is needed; the hexagram inverter can still work properly. When a leg fails outside of the interconnecting loop, a new postfault control strategy is initiated, which controls the two remaining phase currents to maintain an operation with smooth torque. The simulation and experimental results have shown that the hexagram inverter can maintain its operation with smooth torque after a fault. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5353720 [article] Postfault control strategy for the hexagram inverter motor drive [texte imprimé] / Liang, Zhou, Auteur ; Smedley, Keyue Ma, Auteur . - 2011 . - pp. 2719 - 2729. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2719 - 2729 Mots-clés : Fault  tolerant  Medium  voltage  Motor  drives  Multilevel  converter Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper discusses the fault tolerance ability of the hexagram inverter motor drive. Due to its unique interconnecting nature, the hexagram inverter can tolerate one leg failure without modifying the power circuit topology. In the event of one leg failure, the control circuit can reconfigure the trigger signals to maintain a smooth torque operation at a reduced power level. When a leg fails within the inner interconnecting loop, no special postfault strategy is needed; the hexagram inverter can still work properly. When a leg fails outside of the interconnecting loop, a new postfault control strategy is initiated, which controls the two remaining phase currents to maintain an operation with smooth torque. The simulation and experimental results have shown that the hexagram inverter can maintain its operation with smooth torque after a fault. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5353720

A high-performance multicell topology based on single-phase power cells for three-phase systems operating under unbalanced AC mains and asymmetrical loads / Baier, Carlos R. in IEEE transactions on industrial electronics, Vol. 57 N° 8 (Août 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2730 - 2738 Titre : A high-performance multicell topology based on single-phase power cells for three-phase systems operating under unbalanced AC mains and asymmetrical loads Type de document : texte imprimé Auteurs : Baier, Carlos R., Auteur ; Espinoza, José R., Auteur ; Muñoz, Javier A., Auteur Année de publication : 2011 Article en page(s) : pp. 2730 - 2738 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Ac-ac  power  conversion  Insulated-gate  bipolar  transistor  Multicell  single-phase  topology  Multilevel  system  Power  electronics  Variable-speed  drives Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents a multicell converter topology composed of N single-phase power cells per phase and a multipulse power transformer. The topology achieves high-power-quality waveforms in three-phase applications under the presence of severe unbalanced ac mains. Moreover, the power cells are properly arranged in order to achieve high-performance ac supply current waveforms under asymmetrical loads. The configuration is based on single-phase power cells that feature a pulsewidth-modulation rectifier in order to achieve an overall unitary displacement power factor and a controlled dc-link voltage at the power-cell level. The configuration is implemented, and different experimental tests are performed where unbalance and distortion indexes are computed. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5339230 [article] A high-performance multicell topology based on single-phase power cells for three-phase systems operating under unbalanced AC mains and asymmetrical loads [texte imprimé] / Baier, Carlos R., Auteur ; Espinoza, José R., Auteur ; Muñoz, Javier A., Auteur . - 2011 . - pp. 2730 - 2738. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2730 - 2738 Mots-clés : Ac-ac  power  conversion  Insulated-gate  bipolar  transistor  Multicell  single-phase  topology  Multilevel  system  Power  electronics  Variable-speed  drives Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents a multicell converter topology composed of N single-phase power cells per phase and a multipulse power transformer. The topology achieves high-power-quality waveforms in three-phase applications under the presence of severe unbalanced ac mains. Moreover, the power cells are properly arranged in order to achieve high-performance ac supply current waveforms under asymmetrical loads. The configuration is based on single-phase power cells that feature a pulsewidth-modulation rectifier in order to achieve an overall unitary displacement power factor and a controlled dc-link voltage at the power-cell level. The configuration is implemented, and different experimental tests are performed where unbalance and distortion indexes are computed. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5339230

A simplified resonant pole for three-level soft-switching PFC rectifier used in UPS / Rizet, Corentin in IEEE transactions on industrial electronics, Vol. 57 N° 8 (Août 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2739 - 2746 Titre : A simplified resonant pole for three-level soft-switching PFC rectifier used in UPS Type de document : texte imprimé Auteurs : Rizet, Corentin, Auteur ; Ferrieux, Jean -Paul, Auteur ; Le Moigne, Philippe, Auteur Année de publication : 2011 Article en page(s) : pp. 2739 - 2746 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Auxiliary  resonant  commutated  pole  (ARCP)  Multilevel  Power  factor  corrector  (PFC)  Soft  switching  Uninterruptible  power  supply  (UPS)  Zero  voltage  switching  (ZVS) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Efficiency of high-power uninterruptible power supplies (UPSs) is a fundamental criterion regarding the permanent use of such a device. A state of the art on soft switching over constraint of UPS application has been made. The principle of auxiliary resonant commutated pole using autotransformer has been identified as the most interesting way to increase efficiency or switching frequency. Its application for multilevel converters has been studied. A simplified resonant pole has been proposed for a three-level rectifier used as power factor corrector. The design criteria have been discussed. A single phase of a 200-kVA three-level rectifier has been realized and qualified in switching mode. To assess the gain of this principle, the switching losses have been measured on the prototype in both hard and soft switching. The switching losses have been divided by two. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5371862 [article] A simplified resonant pole for three-level soft-switching PFC rectifier used in UPS [texte imprimé] / Rizet, Corentin, Auteur ; Ferrieux, Jean -Paul, Auteur ; Le Moigne, Philippe, Auteur . - 2011 . - pp. 2739 - 2746. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2739 - 2746 Mots-clés : Auxiliary  resonant  commutated  pole  (ARCP)  Multilevel  Power  factor  corrector  (PFC)  Soft  switching  Uninterruptible  power  supply  (UPS)  Zero  voltage  switching  (ZVS) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Efficiency of high-power uninterruptible power supplies (UPSs) is a fundamental criterion regarding the permanent use of such a device. A state of the art on soft switching over constraint of UPS application has been made. The principle of auxiliary resonant commutated pole using autotransformer has been identified as the most interesting way to increase efficiency or switching frequency. Its application for multilevel converters has been studied. A simplified resonant pole has been proposed for a three-level rectifier used as power factor corrector. The design criteria have been discussed. A single phase of a 200-kVA three-level rectifier has been realized and qualified in switching mode. To assess the gain of this principle, the switching losses have been measured on the prototype in both hard and soft switching. The switching losses have been divided by two. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5371862

Multilevel optimal predictive dynamic voltage restorer / Barros, J. Dionisio in IEEE transactions on industrial electronics, Vol. 57 N° 8 (Août 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2747 - 2760 Titre : Multilevel optimal predictive dynamic voltage restorer Type de document : texte imprimé Auteurs : Barros, J. Dionisio, Auteur ; Silva, J. Fernando, Auteur Année de publication : 2011 Article en page(s) : pp. 2747 - 2760 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Dynamic  voltage  restorer  (DVR)  Neutral  point  clamped  (NPC)  multilevel  converter  Power  quality  Predictive  optimal  control Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents an optimal predictive controller for a multilevel converter-based dynamic voltage restorer (DVR), which is able to improve the voltage quality of sensitive loads connected to the electrical power network. The optimal predictive controlled multilevel DVR can restore sags and short interruptions while reducing the total harmonic distortion (THD) of the ac line voltages to values lower than 1%. The DVR is based on a three-phase neutral point clamped converter to dynamically inject a compensation voltage vector in series with the line voltage, through series-connected transformer secondary windings. To assure high-quality voltages for sensitive loads, we devise optimal predictive control laws for the injected compensation ac voltages. A suitable quadratic weighed cost functional is used to choose the voltage vector, minimizing both the ac voltage errors through current injection and the dc side capacitor voltage unbalancing. The performance of the proposed predictive controller is compared to classical proportional integral (PI): synchronous frame and stationary frame (P+resonant) controllers. The line-side filter capacitor topology is compared to the regular converter-side filter capacitor. Obtained experimental results show that the ac voltages are almost sinusoidal in steady-state operation when facing balanced and unbalanced sags and short interruptions with unbalanced loads. Voltage THD is reduced to values lower than 1%; the DVR is behaving also as a series active power filter for the ac voltages. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5289979 [article] Multilevel optimal predictive dynamic voltage restorer [texte imprimé] / Barros, J. Dionisio, Auteur ; Silva, J. Fernando, Auteur . - 2011 . - pp. 2747 - 2760. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2747 - 2760 Mots-clés : Dynamic  voltage  restorer  (DVR)  Neutral  point  clamped  (NPC)  multilevel  converter  Power  quality  Predictive  optimal  control Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents an optimal predictive controller for a multilevel converter-based dynamic voltage restorer (DVR), which is able to improve the voltage quality of sensitive loads connected to the electrical power network. The optimal predictive controlled multilevel DVR can restore sags and short interruptions while reducing the total harmonic distortion (THD) of the ac line voltages to values lower than 1%. The DVR is based on a three-phase neutral point clamped converter to dynamically inject a compensation voltage vector in series with the line voltage, through series-connected transformer secondary windings. To assure high-quality voltages for sensitive loads, we devise optimal predictive control laws for the injected compensation ac voltages. A suitable quadratic weighed cost functional is used to choose the voltage vector, minimizing both the ac voltage errors through current injection and the dc side capacitor voltage unbalancing. The performance of the proposed predictive controller is compared to classical proportional integral (PI): synchronous frame and stationary frame (P+resonant) controllers. The line-side filter capacitor topology is compared to the regular converter-side filter capacitor. Obtained experimental results show that the ac voltages are almost sinusoidal in steady-state operation when facing balanced and unbalanced sags and short interruptions with unbalanced loads. Voltage THD is reduced to values lower than 1%; the DVR is behaving also as a series active power filter for the ac voltages. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5289979

Cascaded nine-level inverter for hybrid-series active power filter, using industrial controller / Varschavsky, Alexander in IEEE transactions on industrial electronics, Vol. 57 N° 8 (Août 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2761 - 2767 Titre : Cascaded nine-level inverter for hybrid-series active power filter, using industrial controller Type de document : texte imprimé Auteurs : Varschavsky, Alexander, Auteur ; Dixon, Juan, Auteur ; Rotella, Mauricio, Auteur Année de publication : 2011 Article en page(s) : pp. 2761 - 2767 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Active  filters  Harmonic  distortion  Multilevel  systems  Power  quality Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : An industrial controller, specifically designed for two- and three-level converters, was adapted to work on an asymmetrical nine-level active power filter (APF). The controller is now able to make all required tasks for the correct operation of the APF, such as current-harmonic elimination and removal of high-frequency noise. The low switching-frequency operation of the nine-level converter was an important advantage in the application of the industrial controller. In addition, with the nine-level filter, switching losses were significantly reduced. The filter was designed to work as voltage source and operates as harmonic isolator, improving the filtering characteristics of the passive filter. The control strategy for detecting current harmonics is based on the “ p-q theory ” and the phase-tracking system in a synchronous reference frame phase-locked loop. The dc-link voltage control is analyzed together with the effect of controller gain and delay time in the system's stability. Simulations for this application are displayed and experiments in a 1-kVA prototype, using the aforementioned industrial controller, were tested, validating the effectiveness of this new application. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5290089 [article] Cascaded nine-level inverter for hybrid-series active power filter, using industrial controller [texte imprimé] / Varschavsky, Alexander, Auteur ; Dixon, Juan, Auteur ; Rotella, Mauricio, Auteur . - 2011 . - pp. 2761 - 2767. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2761 - 2767 Mots-clés : Active  filters  Harmonic  distortion  Multilevel  systems  Power  quality Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : An industrial controller, specifically designed for two- and three-level converters, was adapted to work on an asymmetrical nine-level active power filter (APF). The controller is now able to make all required tasks for the correct operation of the APF, such as current-harmonic elimination and removal of high-frequency noise. The low switching-frequency operation of the nine-level converter was an important advantage in the application of the industrial controller. In addition, with the nine-level filter, switching losses were significantly reduced. The filter was designed to work as voltage source and operates as harmonic isolator, improving the filtering characteristics of the passive filter. The control strategy for detecting current harmonics is based on the “ p-q theory ” and the phase-tracking system in a synchronous reference frame phase-locked loop. The dc-link voltage control is analyzed together with the effect of controller gain and delay time in the system's stability. Simulations for this application are displayed and experiments in a 1-kVA prototype, using the aforementioned industrial controller, were tested, validating the effectiveness of this new application. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5290089

DC capacitor voltage equalization in neutral clamped inverters for DSTATCOM application / Srikanthan, S. in IEEE transactions on industrial electronics, Vol. 57 N° 8 (Août 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2768 - 2775 Titre : DC capacitor voltage equalization in neutral clamped inverters for DSTATCOM application Type de document : texte imprimé Auteurs : Srikanthan, S., Auteur ; Mishra, Mahesh Kumar, Auteur Année de publication : 2011 Article en page(s) : pp. 2768 - 2775 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Distribution  STATic  COMpensator  (DSTATCOM)  Hysteresis  band  current  control  Instantaneous  symetrical  component  theory  Voltage  source  inverter  (VSI) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Multilevel neutral point clamped (NPC) inverter systems are increasingly used in load compensation applications. However, the most significant problem associated with these compensators is the capacitor voltage imbalances and drift due to dc components in the zero sequence current, resulting in degradation of tracking performance of the voltage source inverter. This paper proposes a carrier-based pulsewidth modulation control for an inverter-chopper circuit in order to regulate the capacitor voltages to their reference values. To demonstrate the simplicity and effectiveness of the aforementioned control scheme, a three-phase four-wire three-level NPC compensator system is taken as an example. Detailed simulation has been carried out in PSCAD 4.2.1. Experiments are conducted to validate the proposed control scheme. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=4926164 [article] DC capacitor voltage equalization in neutral clamped inverters for DSTATCOM application [texte imprimé] / Srikanthan, S., Auteur ; Mishra, Mahesh Kumar, Auteur . - 2011 . - pp. 2768 - 2775. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2768 - 2775 Mots-clés : Distribution  STATic  COMpensator  (DSTATCOM)  Hysteresis  band  current  control  Instantaneous  symetrical  component  theory  Voltage  source  inverter  (VSI) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Multilevel neutral point clamped (NPC) inverter systems are increasingly used in load compensation applications. However, the most significant problem associated with these compensators is the capacitor voltage imbalances and drift due to dc components in the zero sequence current, resulting in degradation of tracking performance of the voltage source inverter. This paper proposes a carrier-based pulsewidth modulation control for an inverter-chopper circuit in order to regulate the capacitor voltages to their reference values. To demonstrate the simplicity and effectiveness of the aforementioned control scheme, a three-phase four-wire three-level NPC compensator system is taken as an example. Detailed simulation has been carried out in PSCAD 4.2.1. Experiments are conducted to validate the proposed control scheme. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=4926164

A five-level inverter scheme for a four-pole induction motor drive by feeding the identical voltage-profile windings from both sides / Sivakumar, K. in IEEE transactions on industrial electronics, Vol. 57 N° 8 (Août 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2776 - 2784 Titre : A five-level inverter scheme for a four-pole induction motor drive by feeding the identical voltage-profile windings from both sides Type de document : texte imprimé Auteurs : Sivakumar, K., Auteur ; Das, Anandarup, Auteur ; Ramchand, Rijil, Auteur Année de publication : 2011 Article en page(s) : pp. 2776 - 2784 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Induction  motor  (IM)  drives  Multilevel  inverters  Voltage  space  vectors Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents a five-level inverter scheme with four two-level inverters for a four-pole induction motor (IM) drive. In a conventional three-phase four-pole IM, there exists two identical voltage-profile winding coil groups per phase around the armature, which are connected in series and spatially apart by two pole pitches. In this paper, these two identical voltage-profile pole-pair winding coils in each phase of the IM are disconnected and fed from four two-level inverters from four sides of the windings with one-fourth dc-link voltage as compared to a conventional five-level neutral-point-clamped inverter. The scheme presented in this paper does not require any special design modification for the induction machine. For this paper, a four-pole IM drive is used, and the scheme can be easily extended to IMs with more than four poles. The proposed scheme is experimentally verified on a four-pole 5-hp IM drive. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5166492 [article] A five-level inverter scheme for a four-pole induction motor drive by feeding the identical voltage-profile windings from both sides [texte imprimé] / Sivakumar, K., Auteur ; Das, Anandarup, Auteur ; Ramchand, Rijil, Auteur . - 2011 . - pp. 2776 - 2784. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2776 - 2784 Mots-clés : Induction  motor  (IM)  drives  Multilevel  inverters  Voltage  space  vectors Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents a five-level inverter scheme with four two-level inverters for a four-pole induction motor (IM) drive. In a conventional three-phase four-pole IM, there exists two identical voltage-profile winding coil groups per phase around the armature, which are connected in series and spatially apart by two pole pitches. In this paper, these two identical voltage-profile pole-pair winding coils in each phase of the IM are disconnected and fed from four two-level inverters from four sides of the windings with one-fourth dc-link voltage as compared to a conventional five-level neutral-point-clamped inverter. The scheme presented in this paper does not require any special design modification for the induction machine. For this paper, a four-pole IM drive is used, and the scheme can be easily extended to IMs with more than four poles. The proposed scheme is experimentally verified on a four-pole 5-hp IM drive. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5166492

Measurement of the loop gain frequency response of digitally controlled power converters / Gonzalez-Espin, Fran in IEEE transactions on industrial electronics, Vol. 57 N° 8 (Août 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2785 - 2796 Titre : Measurement of the loop gain frequency response of digitally controlled power converters Type de document : texte imprimé Auteurs : Gonzalez-Espin, Fran, Auteur ; Figueres, Emilio, Auteur ; Garcera, Gabriel, Auteur Année de publication : 2011 Article en page(s) : pp. 2785 - 2796 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Digital  signal  processors  (DSPs)  Power  system  control  Power  system  measurement  Pulsewidth-modulated  power  converter Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : The study of the loop gain frequency response in a power converter is a powerful tool commonly used for the design of the controllers used in the control stage. As the control of medium- and high-power electronic converters is usually performed digitally, it is useful to find a method to measure the digital loop gains. The purpose of this paper is to present a method for properly measuring the loop gain frequency response of digitally controlled power converters by means of an analog frequency response analyzer (FRA). An analog sinusoidal reference signal generated by the FRA is injected through an analog-to-digital converter into the digital controller, and added to the discrete feedback signal. To obtain the frequency response of the open-loop gain, both feedback and disturbed feedback signals are sent back to the FRA by using the pulsewidth modulation peripherals of the controller. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5339228 [article] Measurement of the loop gain frequency response of digitally controlled power converters [texte imprimé] / Gonzalez-Espin, Fran, Auteur ; Figueres, Emilio, Auteur ; Garcera, Gabriel, Auteur . - 2011 . - pp. 2785 - 2796. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2785 - 2796 Mots-clés : Digital  signal  processors  (DSPs)  Power  system  control  Power  system  measurement  Pulsewidth-modulated  power  converter Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : The study of the loop gain frequency response in a power converter is a powerful tool commonly used for the design of the controllers used in the control stage. As the control of medium- and high-power electronic converters is usually performed digitally, it is useful to find a method to measure the digital loop gains. The purpose of this paper is to present a method for properly measuring the loop gain frequency response of digitally controlled power converters by means of an analog frequency response analyzer (FRA). An analog sinusoidal reference signal generated by the FRA is injected through an analog-to-digital converter into the digital controller, and added to the discrete feedback signal. To obtain the frequency response of the open-loop gain, both feedback and disturbed feedback signals are sent back to the FRA by using the pulsewidth modulation peripherals of the controller. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5339228

Realization of rewinder with a reduced number of sensors / Jeftenic, Borislav I. in IEEE transactions on industrial electronics, Vol. 57 N° 8 (Août 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2797 - 2806 Titre : Realization of rewinder with a reduced number of sensors Type de document : texte imprimé Auteurs : Jeftenic, Borislav I., Auteur ; Bebic, Milan Z., Auteur Année de publication : 2011 Article en page(s) : pp. 2797 - 2806 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Control  systems  Estimation  Field  bus  Induction  motor  drives  Industrial  control  Maintenance  Production  systems  Programmable  logic  devices  Pulp  and  paper  industry  Tension  control Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : When adequately maintained, the mechanical system of rewinders and similar machines in paper industry may have a significantly longer service life than its electrical and control systems. Over the lifetime of the facility, a rewinder may experience several major maintenance cycles, and these generally include significant upgrades to the electrical drive and control system. These upgrades present an opportunity to modify the design of the control system to eliminate some of the sensors or to provide signal redundancy by using state estimation. During such major reconstruction of a paper-board rewinder, it was noticed that the shipping-roll radius and the web tension force can be accurately estimated from the measurements available within the drive's control system. This paper presents the implementation of the two estimators on a commercial production rewinder. Test results from the equipment in service show that the measured signals can be supplemented with the estimated ones to provide an alternative in the event of sensor malfunction or to enable trending of accuracy of calibration. Both applications have an entitlement to reduce the downtime of the rewinder, as the replacement of the faulted sensor can be scheduled for the next planned idle period of the machine. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5340661 [article] Realization of rewinder with a reduced number of sensors [texte imprimé] / Jeftenic, Borislav I., Auteur ; Bebic, Milan Z., Auteur . - 2011 . - pp. 2797 - 2806. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2797 - 2806 Mots-clés : Control  systems  Estimation  Field  bus  Induction  motor  drives  Industrial  control  Maintenance  Production  systems  Programmable  logic  devices  Pulp  and  paper  industry  Tension  control Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : When adequately maintained, the mechanical system of rewinders and similar machines in paper industry may have a significantly longer service life than its electrical and control systems. Over the lifetime of the facility, a rewinder may experience several major maintenance cycles, and these generally include significant upgrades to the electrical drive and control system. These upgrades present an opportunity to modify the design of the control system to eliminate some of the sensors or to provide signal redundancy by using state estimation. During such major reconstruction of a paper-board rewinder, it was noticed that the shipping-roll radius and the web tension force can be accurately estimated from the measurements available within the drive's control system. This paper presents the implementation of the two estimators on a commercial production rewinder. Test results from the equipment in service show that the measured signals can be supplemented with the estimated ones to provide an alternative in the event of sensor malfunction or to enable trending of accuracy of calibration. Both applications have an entitlement to reduce the downtime of the rewinder, as the replacement of the faulted sensor can be scheduled for the next planned idle period of the machine. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5340661

Soft-switching PS-PWM DC–DC converter for full-load range applications / Dudrik, Jaroslav in IEEE transactions on industrial electronics, Vol. 57 N° 8 (Août 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2807 - 2814 Titre : Soft-switching PS-PWM DC–DC converter for full-load range applications Type de document : texte imprimé Auteurs : Dudrik, Jaroslav, Auteur ; Trip, Nistor-Daniel, Auteur Année de publication : 2011 Article en page(s) : pp. 2807 - 2814 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Auxiliary  transformer  Phase-shifted  pulsewidth  modulation  (PWM)  (PS-PWM)  Soft  switching  Zero-voltage  and  zero-current  switching  (ZVZCS) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : An improved soft-switching full-bridge phase-shifted pulsewidth modulation converter using insulated-gate bipolar transistors with a special auxiliary transformer is presented in this paper. Zero-voltage switching for leading leg and zero-current switching for lagging leg switches in the converter are achieved for full-load range from no load to short circuit by adding an active energy recovery clamp and auxiliary circuits. The new significant feature of the converter consists in suppression of circulating current also in short-circuit conditions. The proposed converter is very attractive for applications where short circuit and no load are the normal states of the converter operation, e.g., arc welding. The principle of operation is explained and analyzed, and experimental results are presented on a 3-kW 50-kHz laboratory converter model. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5342517 [article] Soft-switching PS-PWM DC–DC converter for full-load range applications [texte imprimé] / Dudrik, Jaroslav, Auteur ; Trip, Nistor-Daniel, Auteur . - 2011 . - pp. 2807 - 2814. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2807 - 2814 Mots-clés : Auxiliary  transformer  Phase-shifted  pulsewidth  modulation  (PWM)  (PS-PWM)  Soft  switching  Zero-voltage  and  zero-current  switching  (ZVZCS) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : An improved soft-switching full-bridge phase-shifted pulsewidth modulation converter using insulated-gate bipolar transistors with a special auxiliary transformer is presented in this paper. Zero-voltage switching for leading leg and zero-current switching for lagging leg switches in the converter are achieved for full-load range from no load to short circuit by adding an active energy recovery clamp and auxiliary circuits. The new significant feature of the converter consists in suppression of circulating current also in short-circuit conditions. The proposed converter is very attractive for applications where short circuit and no load are the normal states of the converter operation, e.g., arc welding. The principle of operation is explained and analyzed, and experimental results are presented on a 3-kW 50-kHz laboratory converter model. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5342517

Control of manipulator using pneumatic muscles for enhanced safety / Choi, Tae-Yong in IEEE transactions on industrial electronics, Vol. 57 N° 8 (Août 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2815 - 2825 Titre : Control of manipulator using pneumatic muscles for enhanced safety Type de document : texte imprimé Auteurs : Choi, Tae-Yong, Auteur ; Ju-Jang, Lee, Auteur Année de publication : 2011 Article en page(s) : pp. 2815 - 2825 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Human-robot  interaction  Joint  compliance  Pneumatic  muscle  (PM)  Safety Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Safety of humans who work with robots is an important issue. Many studies have addressed related methods, but fundamental limits to meet safety requirements have been encountered owing to the absence of compliance in robot actuators. Pneumatic muscle (PM) is considered to be a basic actuator and offers the advantage of intrinsic elasticity to achieve joint compliance. In this paper, joint compliance actuated by PM is actively utilized to enhance human safety during collisions. To this end, the authors present a novel approach to control compliance and associated positions independently with no cross-performance effects using PMs. The proposed method is verified by experiments using a physical robot. In addition, methods to decrease damage from collisions between robots and humans due to operational faults are evaluated through experiments. The effectiveness of the proposed method is verified by measuring the impact impulse in collisions. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5339224 [article] Control of manipulator using pneumatic muscles for enhanced safety [texte imprimé] / Choi, Tae-Yong, Auteur ; Ju-Jang, Lee, Auteur . - 2011 . - pp. 2815 - 2825. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2815 - 2825 Mots-clés : Human-robot  interaction  Joint  compliance  Pneumatic  muscle  (PM)  Safety Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Safety of humans who work with robots is an important issue. Many studies have addressed related methods, but fundamental limits to meet safety requirements have been encountered owing to the absence of compliance in robot actuators. Pneumatic muscle (PM) is considered to be a basic actuator and offers the advantage of intrinsic elasticity to achieve joint compliance. In this paper, joint compliance actuated by PM is actively utilized to enhance human safety during collisions. To this end, the authors present a novel approach to control compliance and associated positions independently with no cross-performance effects using PMs. The proposed method is verified by experiments using a physical robot. In addition, methods to decrease damage from collisions between robots and humans due to operational faults are evaluated through experiments. The effectiveness of the proposed method is verified by measuring the impact impulse in collisions. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5339224

Mobile robot localization using biased chirp-spread-spectrum ranging / Hyeonwoo, Cho in IEEE transactions on industrial electronics, Vol. 57 N° 8 (Août 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2826 - 2835 Titre : Mobile robot localization using biased chirp-spread-spectrum ranging Type de document : texte imprimé Auteurs : Hyeonwoo, Cho, Auteur ; Sang Woo, Kim, Auteur Année de publication : 2011 Article en page(s) : pp. 2826 - 2835 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Chirp-spread-spectrum  (CSS)  ranging  Extended  Kalman  filter  (EKF)  IEEE  802.15.4a  Measurement  bias  Mobile  robot  localization Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : In this paper, we propose a method of mobile robot localization based on chirp-spread-spectrum (CSS) ranging. By using the CSS system, the distances between a mobile robot and CSS nodes fixed at known coordinates can be measured according to the time of flight of radio frequency signals. Based on the measured distances, the coordinates of a mobile robot can be calculated by the method of trilateration. To deal with measurement noise, an extended Kalman filter (EKF) can be applied to estimate the coordinate of the mobile robot. These measured distances, however, are not only noisy but also biased. Therefore, the estimated coordinates of the mobile robot represent inconsistent values. To solve the problem of bias, we define a scaling factor, which corresponds to the change of the magnitude of a measured distance vector that is due to biases. Based on the scaling factor, we develop a new biased measurement model and apply the EKF to our model for estimating the coordinates of a mobile robot. Through localization experiments, we evaluate the performance of the proposed algorithm. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5339225 [article] Mobile robot localization using biased chirp-spread-spectrum ranging [texte imprimé] / Hyeonwoo, Cho, Auteur ; Sang Woo, Kim, Auteur . - 2011 . - pp. 2826 - 2835. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2826 - 2835 Mots-clés : Chirp-spread-spectrum  (CSS)  ranging  Extended  Kalman  filter  (EKF)  IEEE  802.15.4a  Measurement  bias  Mobile  robot  localization Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : In this paper, we propose a method of mobile robot localization based on chirp-spread-spectrum (CSS) ranging. By using the CSS system, the distances between a mobile robot and CSS nodes fixed at known coordinates can be measured according to the time of flight of radio frequency signals. Based on the measured distances, the coordinates of a mobile robot can be calculated by the method of trilateration. To deal with measurement noise, an extended Kalman filter (EKF) can be applied to estimate the coordinate of the mobile robot. These measured distances, however, are not only noisy but also biased. Therefore, the estimated coordinates of the mobile robot represent inconsistent values. To solve the problem of bias, we define a scaling factor, which corresponds to the change of the magnitude of a measured distance vector that is due to biases. Based on the scaling factor, we develop a new biased measurement model and apply the EKF to our model for estimating the coordinates of a mobile robot. Through localization experiments, we evaluate the performance of the proposed algorithm. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5339225

Direct self-control for BLDC motor drives based on three-dimensional coordinate system / Jin, Gao in IEEE transactions on industrial electronics, Vol. 57 N° 8 (Août 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2836 - 2844 Titre : Direct self-control for BLDC motor drives based on three-dimensional coordinate system Type de document : texte imprimé Auteurs : Jin, Gao, Auteur ; Yuwen, Hu, Auteur Année de publication : 2011 Article en page(s) : pp. 2836 - 2844 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Brushless  dc  (BLDC)  Motor  drive  Direct  self-control  (DSC)  Sensorless  Three-dimensional  coordinate  Torque  transient  response Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : In this paper, a new control algorithm for brushless dc (BLDC) motor drives is presented. Direct self-control, which has been widely applied on induction motor drives in high-power low-frequency traction, is introduced to BLDC drives. The Cartesian coordinate system is selected with three coordinate axes X, Y, and Z mutually at right angle to each other with three phase axes a, b, and c being movable. A two-phase conduction scheme is selected with the axis of the exciting phase located in the X-Y plane or, otherwise, along the direction of the Z -axis during unexcited (i.e., the unexcited phase axis is always directed along the Z-axis). The tracks of stator flux and voltage vectors are all three-dimensional, as a result of a variable voltage of unexcited phase and commutation every 60 electrical degrees. However, projections on the X-Y plane of these three-dimensional tracks are concise. The projection of flux vector is a hexagonal path, whereas the voltage vector projections are six active vectors. The projection of stator flux is controlled by the projections of voltage vectors. The newly proposed algorithm can be implemented with relatively low cost hardware and concise software, presenting fast torque transient response in 0.1 ms. The sensorless control is also implemented by flux estimation once in one sector. The validity and effectiveness of the proposed scheme are verified with simulated and experimental results. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5332310 [article] Direct self-control for BLDC motor drives based on three-dimensional coordinate system [texte imprimé] / Jin, Gao, Auteur ; Yuwen, Hu, Auteur . - 2011 . - pp. 2836 - 2844. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2836 - 2844 Mots-clés : Brushless  dc  (BLDC)  Motor  drive  Direct  self-control  (DSC)  Sensorless  Three-dimensional  coordinate  Torque  transient  response Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : In this paper, a new control algorithm for brushless dc (BLDC) motor drives is presented. Direct self-control, which has been widely applied on induction motor drives in high-power low-frequency traction, is introduced to BLDC drives. The Cartesian coordinate system is selected with three coordinate axes X, Y, and Z mutually at right angle to each other with three phase axes a, b, and c being movable. A two-phase conduction scheme is selected with the axis of the exciting phase located in the X-Y plane or, otherwise, along the direction of the Z -axis during unexcited (i.e., the unexcited phase axis is always directed along the Z-axis). The tracks of stator flux and voltage vectors are all three-dimensional, as a result of a variable voltage of unexcited phase and commutation every 60 electrical degrees. However, projections on the X-Y plane of these three-dimensional tracks are concise. The projection of flux vector is a hexagonal path, whereas the voltage vector projections are six active vectors. The projection of stator flux is controlled by the projections of voltage vectors. The newly proposed algorithm can be implemented with relatively low cost hardware and concise software, presenting fast torque transient response in 0.1 ms. The sensorless control is also implemented by flux estimation once in one sector. The validity and effectiveness of the proposed scheme are verified with simulated and experimental results. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5332310

Research and application of new inserted shape memory alloy actuators / Kai, Yang in IEEE transactions on industrial electronics, Vol. 57 N° 8 (Août 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2845 - 2850 Titre : Research and application of new inserted shape memory alloy actuators Type de document : texte imprimé Auteurs : Kai, Yang, Auteur Année de publication : 2011 Article en page(s) : pp. 2845 - 2850 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Inserted  Mechatronics  SMA  actuators Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : More and more people prefer a new inserted shape memory alloy actuator (ISMAA) to a traditional SMA actuator because there are some advantages in ISMAA, such as precise control abilities, high response, broad range of performance, and so on. An elastic rod and two SMA wires, which are inserted in parallel with the axis of the rod, make up the actuator. The actuating wire, which is one of the two wires, is superposed along the rod's axis and set to memorize a “U” shape. The restoring wire, which is the other of the two wires, is placed off-axially and memorizes a straight shape. In the actuator, there are also two differential stain meters, which are placed at an apt location referring to the actuator's bending direction. By making use of these two meters, accurate position control comes true. Taking advantage of the coordinating martensite fraction coefficients appropriately, the presence of major and minor hysteresis loops can be explained in detail when the analytical model was established. The actuator can be optimized by combining the analytical model with the experimental results, particularly the structural parameters, such as the wire's recoverable curvature, wire's radius, rod's radius, and offset distance. In order to take into account the basic performance, there is an example of an anthropopathic robot hand, which is composed of six ISMAAs. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5415681 [article] Research and application of new inserted shape memory alloy actuators [texte imprimé] / Kai, Yang, Auteur . - 2011 . - pp. 2845 - 2850. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2845 - 2850 Mots-clés : Inserted  Mechatronics  SMA  actuators Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : More and more people prefer a new inserted shape memory alloy actuator (ISMAA) to a traditional SMA actuator because there are some advantages in ISMAA, such as precise control abilities, high response, broad range of performance, and so on. An elastic rod and two SMA wires, which are inserted in parallel with the axis of the rod, make up the actuator. The actuating wire, which is one of the two wires, is superposed along the rod's axis and set to memorize a “U” shape. The restoring wire, which is the other of the two wires, is placed off-axially and memorizes a straight shape. In the actuator, there are also two differential stain meters, which are placed at an apt location referring to the actuator's bending direction. By making use of these two meters, accurate position control comes true. Taking advantage of the coordinating martensite fraction coefficients appropriately, the presence of major and minor hysteresis loops can be explained in detail when the analytical model was established. The actuator can be optimized by combining the analytical model with the experimental results, particularly the structural parameters, such as the wire's recoverable curvature, wire's radius, rod's radius, and offset distance. In order to take into account the basic performance, there is an example of an anthropopathic robot hand, which is composed of six ISMAAs. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5415681

A high-performance CMOS feedforward AGC circuit for a WLAN receiver / Pérez, Juan Pablo Alegre in IEEE transactions on industrial electronics, Vol. 57 N° 8 (Août 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2851 - 2857 Titre : A high-performance CMOS feedforward AGC circuit for a WLAN receiver Type de document : texte imprimé Auteurs : Pérez, Juan Pablo Alegre, Auteur ; Calvo, Belén, Auteur ; Celma, Santiago, Auteur Année de publication : 2011 Article en page(s) : pp. 2851 - 2857 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Analog  circuits  Feedforward  systems  Gain  control  Wireless  local-area  network  (WLAN) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents a fast-settling compact feedforward automatic-gain-control (AGC) circuit suitable for use in wireless local-area network receivers with orthogonal frequency-division multiplexing (OFDM). The use of these signals introduces stringent settling-time constraints which limit the use of traditional closed-loop feedback amplifiers. Furthermore, the amplitude detection of OFDM signals cannot be performed by a typical peak detector (PD) due to their high peak-to-average power ratio; as a consequence, a novel fast-settling PD is employed to solve this task. The AGC has been implemented in a low-cost 0.35-μm CMOS technology. Supplied at 1.8 V, it operates with a power consumption of 2.4 mW at frequencies as high as 100 MHz, while its gain ranges from 0 to 22 dB in 2-dB steps through a 5-b word. The settling time of the circuit is below 2.4 μs (three symbols). DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5332298 [article] A high-performance CMOS feedforward AGC circuit for a WLAN receiver [texte imprimé] / Pérez, Juan Pablo Alegre, Auteur ; Calvo, Belén, Auteur ; Celma, Santiago, Auteur . - 2011 . - pp. 2851 - 2857. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2851 - 2857 Mots-clés : Analog  circuits  Feedforward  systems  Gain  control  Wireless  local-area  network  (WLAN) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents a fast-settling compact feedforward automatic-gain-control (AGC) circuit suitable for use in wireless local-area network receivers with orthogonal frequency-division multiplexing (OFDM). The use of these signals introduces stringent settling-time constraints which limit the use of traditional closed-loop feedback amplifiers. Furthermore, the amplitude detection of OFDM signals cannot be performed by a typical peak detector (PD) due to their high peak-to-average power ratio; as a consequence, a novel fast-settling PD is employed to solve this task. The AGC has been implemented in a low-cost 0.35-μm CMOS technology. Supplied at 1.8 V, it operates with a power consumption of 2.4 mW at frequencies as high as 100 MHz, while its gain ranges from 0 to 22 dB in 2-dB steps through a 5-b word. The settling time of the circuit is below 2.4 μs (three symbols). DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5332298

A space-vector discrete Fourier transform for unbalanced and distorted three-phase signals / Neves, Francisco A. S. in IEEE transactions on industrial electronics, Vol. 57 N° 8 (Août 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2858 - 2867 Titre : A space-vector discrete Fourier transform for unbalanced and distorted three-phase signals Type de document : texte imprimé Auteurs : Neves, Francisco A. S., Auteur ; de Souza, Helber E. P., Auteur ; Bradaschia, Fabricio, Auteur Année de publication : 2011 Article en page(s) : pp. 2858 - 2867 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Active  filters  Amplitude  and  phase  estimation  Discrete  Fourier  transforms  (DFTs)  Industrial  power  system  harmonics Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : In this paper, a space-vector discrete-time Fourier transform is proposed for fast and precise detection of the fundamental-frequency and harmonic positive- and negative-sequence vector components of three-phase input signals. The discrete Fourier transform is applied to the three-phase signals represented by Clarke's αβ vector. It is shown that the complex numbers output from the Fourier transform are the instantaneous values of the positive- and negative-sequence harmonic component vectors of the input three-phase signals. The method allows the computation of any desired positive- or negative-sequence fundamental-frequency or harmonic vector component of the input signal. A recursive algorithm for low-effort online implementation is also presented. The detection performance for variable-frequency and interharmonic input signals is discussed. The proposed and other usual method performances are compared through simulations and experiments. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5340691 [article] A space-vector discrete Fourier transform for unbalanced and distorted three-phase signals [texte imprimé] / Neves, Francisco A. S., Auteur ; de Souza, Helber E. P., Auteur ; Bradaschia, Fabricio, Auteur . - 2011 . - pp. 2858 - 2867. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2858 - 2867 Mots-clés : Active  filters  Amplitude  and  phase  estimation  Discrete  Fourier  transforms  (DFTs)  Industrial  power  system  harmonics Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : In this paper, a space-vector discrete-time Fourier transform is proposed for fast and precise detection of the fundamental-frequency and harmonic positive- and negative-sequence vector components of three-phase input signals. The discrete Fourier transform is applied to the three-phase signals represented by Clarke's αβ vector. It is shown that the complex numbers output from the Fourier transform are the instantaneous values of the positive- and negative-sequence harmonic component vectors of the input three-phase signals. The method allows the computation of any desired positive- or negative-sequence fundamental-frequency or harmonic vector component of the input signal. A recursive algorithm for low-effort online implementation is also presented. The detection performance for variable-frequency and interharmonic input signals is discussed. The proposed and other usual method performances are compared through simulations and experiments. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5340691

A neural-network-identifier and fuzzy-controller-based algorithm for dynamic decoupling control of permanent-magnet spherical motor / Changliang, Xia in IEEE transactions on industrial electronics, Vol. 57 N° 8 (Août 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2868 - 2878 Titre : A neural-network-identifier and fuzzy-controller-based algorithm for dynamic decoupling control of permanent-magnet spherical motor Type de document : texte imprimé Auteurs : Changliang, Xia, Auteur ; Chen, Guo, Auteur ; Tingna, Shi, Auteur Année de publication : 2011 Article en page(s) : pp. 2868 - 2878 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Dynamic  decoupling  control  algorithm  Fuzzy  controller  (FC)  Neural  network  identifier  (NNI)  Online  identification  Permanent-magnet  (PM)  spherical  motor  (PMSM) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper proposes a dynamic model of permanent-magnet spherical motor (PMSM) and puts forward a dynamic decoupling control algorithm of the motor, using fuzzy controllers (FCs) and a neural network identifier (NNI). PMSM is a multivariable nonlinear system with strong interaxis couplings. A computed torque method structure is applied to PMSM. There are such uncertainties as estimated errors of the model and external perturbations, which may influence the precision of the control system. A back-propagation algorithm with additional momentum term and self-adaptive learning rate applied to feed-forward neural network can approach nonlinear functions with a learning rate adjusted online, which helps to improve training speed. In this paper, an NNI is applied to identify the uncertainties online. An adaptive-neuro-fuzzy-inference-system-based FC is applied, which has self-adaptive ability and strong robustness. Simulation results preliminarily validate that the algorithm proposed in this paper can eliminate the influences of interaxis nonlinear couplings effectively to actualize dynamic decoupling control. Furthermore, the static and dynamic performances of the control system have been improved greatly with strong robustness to uncertainties. A hypothetical microprocessor system is proposed, and simple experiments of spinning operation are carried out as a foundation for further study. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5332328 [article] A neural-network-identifier and fuzzy-controller-based algorithm for dynamic decoupling control of permanent-magnet spherical motor [texte imprimé] / Changliang, Xia, Auteur ; Chen, Guo, Auteur ; Tingna, Shi, Auteur . - 2011 . - pp. 2868 - 2878. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2868 - 2878 Mots-clés : Dynamic  decoupling  control  algorithm  Fuzzy  controller  (FC)  Neural  network  identifier  (NNI)  Online  identification  Permanent-magnet  (PM)  spherical  motor  (PMSM) Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper proposes a dynamic model of permanent-magnet spherical motor (PMSM) and puts forward a dynamic decoupling control algorithm of the motor, using fuzzy controllers (FCs) and a neural network identifier (NNI). PMSM is a multivariable nonlinear system with strong interaxis couplings. A computed torque method structure is applied to PMSM. There are such uncertainties as estimated errors of the model and external perturbations, which may influence the precision of the control system. A back-propagation algorithm with additional momentum term and self-adaptive learning rate applied to feed-forward neural network can approach nonlinear functions with a learning rate adjusted online, which helps to improve training speed. In this paper, an NNI is applied to identify the uncertainties online. An adaptive-neuro-fuzzy-inference-system-based FC is applied, which has self-adaptive ability and strong robustness. Simulation results preliminarily validate that the algorithm proposed in this paper can eliminate the influences of interaxis nonlinear couplings effectively to actualize dynamic decoupling control. Furthermore, the static and dynamic performances of the control system have been improved greatly with strong robustness to uncertainties. A hypothetical microprocessor system is proposed, and simple experiments of spinning operation are carried out as a foundation for further study. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5332328

Detection of broken bars in induction motor through the analysis of supply voltage modulation / Nemec, Mitja in IEEE transactions on industrial electronics, Vol. 57 N° 8 (Août 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2879 - 2888 Titre : Detection of broken bars in induction motor through the analysis of supply voltage modulation Type de document : texte imprimé Auteurs : Nemec, Mitja, Auteur ; Drobnic, Klemen, Auteur ; Nedeljkovic, David, Auteur Année de publication : 2011 Article en page(s) : pp. 2879 - 2888 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Fault  diagnosis  Induction  machines  Inverters  Modulation  Predictive  control  Squirrel  cage  motors  Velocity  control Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents an application of a novel method for the diagnostics of electric and magnetic asymmetries of rotor cage in induction motor (IM) due to broken rotor bars. An increasing anomaly in magnetic field distribution results in degradation of steady-state and dynamic performance of an IM. This degradation can be determined through the analysis of the average duty cycle of the modulated supply voltage. Broken rotor bars would cause torque and speed ripple which is mitigated by an efficient speed-control algorithm. Consequently, specific oscillation in the duty cycle of the modulated stator voltage appears. This effect can be simply detected without additional hardware and therefore provides a correct evaluation of faulty motor performance, which is a very significant part of condition monitoring and diagnostic procedure in modern supervision systems for electrical drives. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5332284 [article] Detection of broken bars in induction motor through the analysis of supply voltage modulation [texte imprimé] / Nemec, Mitja, Auteur ; Drobnic, Klemen, Auteur ; Nedeljkovic, David, Auteur . - 2011 . - pp. 2879 - 2888. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2879 - 2888 Mots-clés : Fault  diagnosis  Induction  machines  Inverters  Modulation  Predictive  control  Squirrel  cage  motors  Velocity  control Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents an application of a novel method for the diagnostics of electric and magnetic asymmetries of rotor cage in induction motor (IM) due to broken rotor bars. An increasing anomaly in magnetic field distribution results in degradation of steady-state and dynamic performance of an IM. This degradation can be determined through the analysis of the average duty cycle of the modulated supply voltage. Broken rotor bars would cause torque and speed ripple which is mitigated by an efficient speed-control algorithm. Consequently, specific oscillation in the duty cycle of the modulated stator voltage appears. This effect can be simply detected without additional hardware and therefore provides a correct evaluation of faulty motor performance, which is a very significant part of condition monitoring and diagnostic procedure in modern supervision systems for electrical drives. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5332284

A novel power supply of online monitoring systems for power transmission lines / Lin, Du in IEEE transactions on industrial electronics, Vol. 57 N° 8 (Août 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2889 - 2895 Titre : A novel power supply of online monitoring systems for power transmission lines Type de document : texte imprimé Auteurs : Lin, Du, Auteur ; Caisheng, Wang, Auteur ; Xianzhi, Li, Auteur Année de publication : 2011 Article en page(s) : pp. 2889 - 2895 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Impulse  current  Online  monitoring  system  Power  supply  Rogowski  coil  Transmission  line Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents a novel power supply of online condition monitoring systems for power transmission lines. The proposed power supply obtains energy from the magnetic field induced by transmission-line currents using a specially designed Rogowski coil. The design details of the power supply circuit including the unit for overvoltage and impulse line current protection are given in this paper. The impact to the power supply's reliability caused by abnormal high transmission-line currents is also addressed. Experimental tests, including the short-circuit and impulse-current tests, have been conducted on the power supply to verify its performance under different operating conditions. Test results show that the power supply is capable of providing stable outputs with no saturation and low heat generation for the entire range of line conducting currents and can sustain severe conditions such as abnormal impulse currents. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5342522 [article] A novel power supply of online monitoring systems for power transmission lines [texte imprimé] / Lin, Du, Auteur ; Caisheng, Wang, Auteur ; Xianzhi, Li, Auteur . - 2011 . - pp. 2889 - 2895. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2889 - 2895 Mots-clés : Impulse  current  Online  monitoring  system  Power  supply  Rogowski  coil  Transmission  line Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents a novel power supply of online condition monitoring systems for power transmission lines. The proposed power supply obtains energy from the magnetic field induced by transmission-line currents using a specially designed Rogowski coil. The design details of the power supply circuit including the unit for overvoltage and impulse line current protection are given in this paper. The impact to the power supply's reliability caused by abnormal high transmission-line currents is also addressed. Experimental tests, including the short-circuit and impulse-current tests, have been conducted on the power supply to verify its performance under different operating conditions. Test results show that the power supply is capable of providing stable outputs with no saturation and low heat generation for the entire range of line conducting currents and can sustain severe conditions such as abnormal impulse currents. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5342522

Energy efficiency in industrial ethernet / Maestro, Juan Antonio in IEEE transactions on industrial electronics, Vol. 57 N° 8 (Août 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2896 - 2903 Titre : Energy efficiency in industrial ethernet : the case of powerlink Type de document : texte imprimé Auteurs : Maestro, Juan Antonio, Auteur ; Reviriego, Pedro, Auteur Année de publication : 2011 Article en page(s) : pp. 2896 - 2903 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Energy  efficiency  Industrial  Ethernet Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Industrial Ethernet technology enables real-time reliable communications for industrial environments. One of its key features is the use of Ethernet for the communication infrastructure. This provides a very cost-effective solution, as no communication infrastructure has to be designed ad hoc. In the last years, the efficient use of energy in communications has become an area of growing interest. This has triggered efforts that are now underway to develop new standards, like Energy Efficient Ethernet, with the aim of reducing the energy consumption. The proposed changes to existing Ethernet standards allow setting the links in low-power modes when there is little traffic. These changes, introduced by Energy Efficient Ethernet, will have wide implications for Industrial Ethernet. For example, the time needed to enter or exit the low-power modes may be excessive for some industrial applications. The use of low-power modes will make hubs less energy efficient than switches and may cause manufacturers to abandon the production of these devices. In this paper, the implications of Energy Efficient Ethernet on industrial environments are analyzed, and different alternatives are proposed. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5340687 [article] Energy efficiency in industrial ethernet : the case of powerlink [texte imprimé] / Maestro, Juan Antonio, Auteur ; Reviriego, Pedro, Auteur . - 2011 . - pp. 2896 - 2903. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2896 - 2903 Mots-clés : Energy  efficiency  Industrial  Ethernet Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Industrial Ethernet technology enables real-time reliable communications for industrial environments. One of its key features is the use of Ethernet for the communication infrastructure. This provides a very cost-effective solution, as no communication infrastructure has to be designed ad hoc. In the last years, the efficient use of energy in communications has become an area of growing interest. This has triggered efforts that are now underway to develop new standards, like Energy Efficient Ethernet, with the aim of reducing the energy consumption. The proposed changes to existing Ethernet standards allow setting the links in low-power modes when there is little traffic. These changes, introduced by Energy Efficient Ethernet, will have wide implications for Industrial Ethernet. For example, the time needed to enter or exit the low-power modes may be excessive for some industrial applications. The use of low-power modes will make hubs less energy efficient than switches and may cause manufacturers to abandon the production of these devices. In this paper, the implications of Energy Efficient Ethernet on industrial environments are analyzed, and different alternatives are proposed. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5340687

Elimination of subharmonic oscillation of digital-average-current-controlled switching DC–DC converters / Zhou, Guohua in IEEE transactions on industrial electronics, Vol. 57 N° 8 (Août 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2904 - 2907 Titre : Elimination of subharmonic oscillation of digital-average-current-controlled switching DC–DC converters Type de document : texte imprimé Auteurs : Zhou, Guohua, Auteur ; Xu, Jianping, Auteur ; Yanyan, Jin, Auteur Année de publication : 2011 Article en page(s) : pp. 2904 - 2907 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Digital-average-current  (DAC)  control  Digital  control  Digital  triangle  compensation  (DTC)  Switching  dc-dc  converters Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Subharmonic oscillations exist in digital-average-current-controlled switching dc-dc converters with trailing- and leading-edge modulations. To eliminate these subharmonic oscillations, a digital-triangle-compensation (DTC) method is proposed in this letter. The DTC method can easily be implemented in digital way without an extra compensation circuit. Experimental results are given to verify the analysis results. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5332294 [article] Elimination of subharmonic oscillation of digital-average-current-controlled switching DC–DC converters [texte imprimé] / Zhou, Guohua, Auteur ; Xu, Jianping, Auteur ; Yanyan, Jin, Auteur . - 2011 . - pp. 2904 - 2907. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2904 - 2907 Mots-clés : Digital-average-current  (DAC)  control  Digital  control  Digital  triangle  compensation  (DTC)  Switching  dc-dc  converters Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Subharmonic oscillations exist in digital-average-current-controlled switching dc-dc converters with trailing- and leading-edge modulations. To eliminate these subharmonic oscillations, a digital-triangle-compensation (DTC) method is proposed in this letter. The DTC method can easily be implemented in digital way without an extra compensation circuit. Experimental results are given to verify the analysis results. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5332294

Exemplaires

Bibliothèque Ecole Nationale Polytechnique d'Alger

Accueil

Se connecter

Météo

Adresse