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The DSpace digital repository system captures, stores, indexes, preserves, and distributes digital research material.Sat, 18 May 2019 23:39:03 GMT2019-05-18T23:39:03ZControl of Non-conventional Synchronous Motors
http://hdl.handle.net/10985/6897
Control of Non-conventional Synchronous Motors
SEMAIL, Eric; KESTELYN, Xavier
This chapter is devoted to the modeling and control of electrical machines having at least two independent statoric currents. The star-coupled three-phase machine without a neutral terminal or the triangle-coupled three-phase machine is the most basic of them. More precisely, the aim of this chapter is to emphasize the particularities created by a number of independent currents greater than two with respect to the classical three-phase machine.
Sun, 01 Jan 2012 00:00:00 GMThttp://hdl.handle.net/10985/68972012-01-01T00:00:00ZSEMAIL, EricKESTELYN, XavierThis chapter is devoted to the modeling and control of electrical machines having at least two independent statoric currents. The star-coupled three-phase machine without a neutral terminal or the triangle-coupled three-phase machine is the most basic of them. More precisely, the aim of this chapter is to emphasize the particularities created by a number of independent currents greater than two with respect to the classical three-phase machine.Computation of Optimal Current References for Flux-weakening of Multi-Phase Synchronous Machines
http://hdl.handle.net/10985/6741
Computation of Optimal Current References for Flux-weakening of Multi-Phase Synchronous Machines
LU, Li; ASLAN, Bassel; KOBYLANSKI, Luc; SANDULESCU, Paul; MEINGUET, Fabien; KESTELYN, Xavier; SEMAIL, Eric
Multi-phase synchronous machines are more and more used in specific applications where high power density, low bus voltage, wide speed range and fault-tolerant capabilities are required. Due to the high number of degrees of freedom, multi-phase machines are difficult to optimally operate in flux-weakening zones. This paper proposes a technique to numerically compute optimal current references that can be used for feed-forward flux-weakening techniques in order to exploit the maximum machine performances for given DC bus voltage and current limits. The proposed technique is applied to a five-phase permanent magnet synchronous machine specifically developed for an automotive application.
Sun, 01 Jan 2012 00:00:00 GMThttp://hdl.handle.net/10985/67412012-01-01T00:00:00ZLU, LiASLAN, BasselKOBYLANSKI, LucSANDULESCU, PaulMEINGUET, FabienKESTELYN, XavierSEMAIL, EricMulti-phase synchronous machines are more and more used in specific applications where high power density, low bus voltage, wide speed range and fault-tolerant capabilities are required. Due to the high number of degrees of freedom, multi-phase machines are difficult to optimally operate in flux-weakening zones. This paper proposes a technique to numerically compute optimal current references that can be used for feed-forward flux-weakening techniques in order to exploit the maximum machine performances for given DC bus voltage and current limits. The proposed technique is applied to a five-phase permanent magnet synchronous machine specifically developed for an automotive application.Modélisation vectorielle et commande de machines polyphasées à pôles lisses alimentées par onduleur de tension
http://hdl.handle.net/10985/6896
Modélisation vectorielle et commande de machines polyphasées à pôles lisses alimentées par onduleur de tension
SEMAIL, Eric; KESTELYN, Xavier
Ce chapitre traite de la modélisation et de la commande de machines électriques à plus de deux courants indépendants alimentées par onduleur de tension. Une approche vectorielle générale permettant de généraliser le concept de machine diphasée équivalente utilisé pour les machines triphasées est présentée et appliquée au cas d’une machine synchrone prototype à aimants permanents cinq phases alimentée soit par 5 bras d’onduleurs.
Fri, 01 Jan 2010 00:00:00 GMThttp://hdl.handle.net/10985/68962010-01-01T00:00:00ZSEMAIL, EricKESTELYN, XavierCe chapitre traite de la modélisation et de la commande de machines électriques à plus de deux courants indépendants alimentées par onduleur de tension. Une approche vectorielle générale permettant de généraliser le concept de machine diphasée équivalente utilisé pour les machines triphasées est présentée et appliquée au cas d’une machine synchrone prototype à aimants permanents cinq phases alimentée soit par 5 bras d’onduleurs.Étude comparative de différents correcteurs pour la commande optimale avec défauts d’une machine pentaphasée
http://hdl.handle.net/10985/6881
Étude comparative de différents correcteurs pour la commande optimale avec défauts d’une machine pentaphasée
MEKRI, Fatiha; CHARPENTIER, Jean-Frederic; KESTELYN, Xavier; SEMAIL, Eric
The use of multiphase PM synchronous machines associated with VSI drives appears to be a very efficient solution when a high level of reliability, compactness and acoustic behaviour is required. This kind of solution is for example very useful in naval propulsion systems. The paper deals with the optimal control of a 5-phase PM machine associated with a VSI under fault conditions. This work focus on the use of such a system in normal and fault operations. The studied fault operations are open circuited phase fault conditions. Previous works have shown that, with this kind of 5-phase drive, it is possible to determine optimal currents references which maximize the torque density and reduce the torque pulsations of the machine when one or two phases are open circuited. In this fault case, classical linear controllers (as PID for example) cannot provide a correct tracking of these optimal reference currents because they have a highly dynamical behavior. Using this optimal reference current generation, we propose in this paper to compare classical PID controllers with fixed band and adaptive band hysteresis controllers. This comparison is done using Matlab/Simulink simulation in the case of a 5 phase surface mounted permanent magnet machine in normal and open-circuited fault operations. Study results show that adaptive band hysteresis control allows a good tracking of these unconventional reference currents with a fixed switching frequency for the VSI. In this case of adaptive s band hysteresis control appears to be particularly efficient.
La version éditeur de cet article est accessible à l'adresse suivante : doi:10.3166/ejee.15.377-400
Sun, 01 Jan 2012 00:00:00 GMThttp://hdl.handle.net/10985/68812012-01-01T00:00:00ZMEKRI, FatihaCHARPENTIER, Jean-FredericKESTELYN, XavierSEMAIL, EricThe use of multiphase PM synchronous machines associated with VSI drives appears to be a very efficient solution when a high level of reliability, compactness and acoustic behaviour is required. This kind of solution is for example very useful in naval propulsion systems. The paper deals with the optimal control of a 5-phase PM machine associated with a VSI under fault conditions. This work focus on the use of such a system in normal and fault operations. The studied fault operations are open circuited phase fault conditions. Previous works have shown that, with this kind of 5-phase drive, it is possible to determine optimal currents references which maximize the torque density and reduce the torque pulsations of the machine when one or two phases are open circuited. In this fault case, classical linear controllers (as PID for example) cannot provide a correct tracking of these optimal reference currents because they have a highly dynamical behavior. Using this optimal reference current generation, we propose in this paper to compare classical PID controllers with fixed band and adaptive band hysteresis controllers. This comparison is done using Matlab/Simulink simulation in the case of a 5 phase surface mounted permanent magnet machine in normal and open-circuited fault operations. Study results show that adaptive band hysteresis control allows a good tracking of these unconventional reference currents with a fixed switching frequency for the VSI. In this case of adaptive s band hysteresis control appears to be particularly efficient.Fault Tolerant Control of a Seven-phase Drive by Degrees of Freedom Adaptation
http://hdl.handle.net/10985/6974
Fault Tolerant Control of a Seven-phase Drive by Degrees of Freedom Adaptation
KESTELYN, Xavier; CREVITS, Yvan; SEMAIL, Eric
This paper proposes a simple way to control multi-phase drives in open-phase conditions. Contrary to existing methods, current references are not recomputed and the control scheme is kept the same to run in open-circuited phase condition. In order to work in fault-conditions, the number of degrees of freedom of the control scheme is adapted to the number of degrees of freedom of the drive. Since a particular attention has to be dedicated to the structure and controller tuning, harmonic content of induced perturbations in fault mode is exhibited. Simulation and experimental results are presented to show the effectiveness and the limitations of the proposed method.
La version éditeur est disponible à l'adresse suivante : http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=5472476&isnumber=5472440
Fri, 01 Jan 2010 00:00:00 GMThttp://hdl.handle.net/10985/69742010-01-01T00:00:00ZKESTELYN, XavierCREVITS, YvanSEMAIL, EricThis paper proposes a simple way to control multi-phase drives in open-phase conditions. Contrary to existing methods, current references are not recomputed and the control scheme is kept the same to run in open-circuited phase condition. In order to work in fault-conditions, the number of degrees of freedom of the control scheme is adapted to the number of degrees of freedom of the drive. Since a particular attention has to be dedicated to the structure and controller tuning, harmonic content of induced perturbations in fault mode is exhibited. Simulation and experimental results are presented to show the effectiveness and the limitations of the proposed method.Flux-weakening operation of open-end winding drive integrating a cost effective high-power charger
http://hdl.handle.net/10985/6794
Flux-weakening operation of open-end winding drive integrating a cost effective high-power charger
SANDULESCU, Paul; MEINGUET, Fabien; KESTELYN, Xavier; SEMAIL, Eric; BRUYERE, Antoine
In this paper, a three-phase drive with a six-leg Voltage Source Inverter (VSI) and an open-end winding Interior Permanent Magnet Synchronous Machine (IPMSM) designed for the traction of an electric vehicle is studied in flux-weakening operation. The topology allows the functionality of a high power charger to be obtained, without adding any other supplementary power devices. On the other hand, since there are three independent currents, the control structure has to handle not only the two dq current components but also a zero-sequence current. If neglected, in comparison with wye-coupled three-phase drive, this zero-sequence component can cause a higher maximum peak value of the phase currents, additional stator Joule losses, torque ripple, inverter voltage saturation and IGBT oversizing. The proposed control strategy consists in adapting a conventional method used for wye-connected machines particularly in flux-weakening operation. This strategy allows the closed-loop control of the zero-sequence current to be maintained in the whole speed range and therefore inverter saturation is avoided. Simulations and experimental results are presented and analyzed.
Tue, 01 Jan 2013 00:00:00 GMThttp://hdl.handle.net/10985/67942013-01-01T00:00:00ZSANDULESCU, PaulMEINGUET, FabienKESTELYN, XavierSEMAIL, EricBRUYERE, AntoineIn this paper, a three-phase drive with a six-leg Voltage Source Inverter (VSI) and an open-end winding Interior Permanent Magnet Synchronous Machine (IPMSM) designed for the traction of an electric vehicle is studied in flux-weakening operation. The topology allows the functionality of a high power charger to be obtained, without adding any other supplementary power devices. On the other hand, since there are three independent currents, the control structure has to handle not only the two dq current components but also a zero-sequence current. If neglected, in comparison with wye-coupled three-phase drive, this zero-sequence component can cause a higher maximum peak value of the phase currents, additional stator Joule losses, torque ripple, inverter voltage saturation and IGBT oversizing. The proposed control strategy consists in adapting a conventional method used for wye-connected machines particularly in flux-weakening operation. This strategy allows the closed-loop control of the zero-sequence current to be maintained in the whole speed range and therefore inverter saturation is avoided. Simulations and experimental results are presented and analyzed.Fault-Tolerant Operation of an Open-End Winding Five-Phase PMSM Drive with Inverter Faults
http://hdl.handle.net/10985/7421
Fault-Tolerant Operation of an Open-End Winding Five-Phase PMSM Drive with Inverter Faults
MEINGUET, Fabien; NGUYEN, Ngac Ky; SANDULESCU, Paul; KESTELYN, Xavier; SEMAIL, Eric
Multi-phase machines are known for their fault-tolerant capability. However, star-connected machines have no fault tolerance to inverter switch short-circuit fault. This paper investigates the fault-tolerant operation of an open-end five-phase drive, i.e. a multi-phase machine fed with a dual-inverter supply. Open-circuit faults and inverter switch short-circuit faults are considered and handled with various degrees of reconfiguration. Theoretical developments and experimental results validate the proposed strategies.
The authors would like to thank the ADEME for the funding of the MHYGALE project.
Tue, 01 Jan 2013 00:00:00 GMThttp://hdl.handle.net/10985/74212013-01-01T00:00:00ZMEINGUET, FabienNGUYEN, Ngac KySANDULESCU, PaulKESTELYN, XavierSEMAIL, EricMulti-phase machines are known for their fault-tolerant capability. However, star-connected machines have no fault tolerance to inverter switch short-circuit fault. This paper investigates the fault-tolerant operation of an open-end five-phase drive, i.e. a multi-phase machine fed with a dual-inverter supply. Open-circuit faults and inverter switch short-circuit faults are considered and handled with various degrees of reconfiguration. Theoretical developments and experimental results validate the proposed strategies.A Multiphase Traction/Fast-Battery-Charger Drive for Electric or Plug-in Hybrid Vehicles
http://hdl.handle.net/10985/6750
A Multiphase Traction/Fast-Battery-Charger Drive for Electric or Plug-in Hybrid Vehicles
SANDULESCU, Paul; KESTELYN, Xavier; SEMAIL, Eric; BRUYERE, Antoine; BOUCHEZ, Boris; DE SOUSA, Luis
For Electric Vehicles (EV), the charger is one of the main technical and economical weaknesses. This paper focuses on an original electric drive [1]-[3] dedicated to the vehicle traction and configurable as a battery charger without need of additional components. This cheap solution can outfit either electric or plug-in hybrid automotive vehicles, without needing additional mass and volume dedicated to the charger. Moreover, it allows a high charging power, for short duration charge cycles. However, this solution needs specific cares concerning the electrical machine control. This paper deals with the control of this drive [1], focusing on traction mode. In introduction, a review is done about topologies of combined on-board chargers. Then, the studied topology is introduced; using a 3-phase brushless machine supplied with a 6-leg Voltage Source Inverter (VSI). A model for its control is defined in the generalized Concordia frame, considering the traction mode. Then, an analysis of this model is established using a multimachine theory and a graphical formalism (the Energetic Macroscopic Representation denoted EMR). Using EMR, a description of energy flows shows specific control constraints. Indeed, numerical simulations illustrate the perturbations on the currents and the torque when controlling the machine with standard control methodologies. An improved control, deduced from the previous analysis, shows good performances, strongly reducing currents and torque ripples.
Fri, 01 Jan 2010 00:00:00 GMThttp://hdl.handle.net/10985/67502010-01-01T00:00:00ZSANDULESCU, PaulKESTELYN, XavierSEMAIL, EricBRUYERE, AntoineBOUCHEZ, BorisDE SOUSA, LuisFor Electric Vehicles (EV), the charger is one of the main technical and economical weaknesses. This paper focuses on an original electric drive [1]-[3] dedicated to the vehicle traction and configurable as a battery charger without need of additional components. This cheap solution can outfit either electric or plug-in hybrid automotive vehicles, without needing additional mass and volume dedicated to the charger. Moreover, it allows a high charging power, for short duration charge cycles. However, this solution needs specific cares concerning the electrical machine control. This paper deals with the control of this drive [1], focusing on traction mode. In introduction, a review is done about topologies of combined on-board chargers. Then, the studied topology is introduced; using a 3-phase brushless machine supplied with a 6-leg Voltage Source Inverter (VSI). A model for its control is defined in the generalized Concordia frame, considering the traction mode. Then, an analysis of this model is established using a multimachine theory and a graphical formalism (the Energetic Macroscopic Representation denoted EMR). Using EMR, a description of energy flows shows specific control constraints. Indeed, numerical simulations illustrate the perturbations on the currents and the torque when controlling the machine with standard control methodologies. An improved control, deduced from the previous analysis, shows good performances, strongly reducing currents and torque ripples.FPGA Implementation of a General Space Vector Approach on a 6-Leg Voltage Source Inverter
http://hdl.handle.net/10985/6749
FPGA Implementation of a General Space Vector Approach on a 6-Leg Voltage Source Inverter
SANDULESCU, Paul; IDKHAJINE, Lahoucine; CENSE, Sébastien; COLAS, Frédéric; KESTELYN, Xavier; SEMAIL, Eric; BRUYERE, Antoine
A general algorithm of a Space Vector approach is implemented on a 6-leg VSI controlling a PM synchronous machine with three independent phases. In this last case, the necessity of controlling the zero-sequence current motivates the choice of a special family of vectors, different of this one used in Pulse Width Modulation (PWM) intersective strategy and in common Space Vector PWM (SVPWM). To preserve the parallelism of the algorithm and fulfill the execution time constraints, the implementation is made on a Field Programmable Gate Array (FPGA). Comparisons with more classical 2-level and 3-level PWM are provided.
Sat, 01 Jan 2011 00:00:00 GMThttp://hdl.handle.net/10985/67492011-01-01T00:00:00ZSANDULESCU, PaulIDKHAJINE, LahoucineCENSE, SébastienCOLAS, FrédéricKESTELYN, XavierSEMAIL, EricBRUYERE, AntoineA general algorithm of a Space Vector approach is implemented on a 6-leg VSI controlling a PM synchronous machine with three independent phases. In this last case, the necessity of controlling the zero-sequence current motivates the choice of a special family of vectors, different of this one used in Pulse Width Modulation (PWM) intersective strategy and in common Space Vector PWM (SVPWM). To preserve the parallelism of the algorithm and fulfill the execution time constraints, the implementation is made on a Field Programmable Gate Array (FPGA). Comparisons with more classical 2-level and 3-level PWM are provided.Vectorial Approach Based Control of a Seven-Phase Axial Flux Machine Designed for Fault Operation
http://hdl.handle.net/10985/6956
Vectorial Approach Based Control of a Seven-Phase Axial Flux Machine Designed for Fault Operation
LOCMENT, Fabrice; SEMAIL, Eric; KESTELYN, Xavier
This paper deals with easy-to-implement control strategies when a seven-phase axial flux permanent magnet machine supplied by a seven-leg voltage source inverter is in fault operation mode. Using a vectorial multimachine description, a seven-phase machine presenting a heightened ability to be controlled with one or two open-circuited phases has been designed. The machine is first presented, and experimental results are provided when one or two phases are open circuited. Based on a vectorial approach, new current references are calculated to avoid high-torque ripples.
Version éditeur disponible à l'adresse suivante : http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=4519973&isnumber=4636792
Tue, 01 Jan 2008 00:00:00 GMThttp://hdl.handle.net/10985/69562008-01-01T00:00:00ZLOCMENT, FabriceSEMAIL, EricKESTELYN, XavierThis paper deals with easy-to-implement control strategies when a seven-phase axial flux permanent magnet machine supplied by a seven-leg voltage source inverter is in fault operation mode. Using a vectorial multimachine description, a seven-phase machine presenting a heightened ability to be controlled with one or two open-circuited phases has been designed. The machine is first presented, and experimental results are provided when one or two phases are open circuited. Based on a vectorial approach, new current references are calculated to avoid high-torque ripples.