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The DSpace digital repository system captures, stores, indexes, preserves, and distributes digital research material.Sun, 21 Apr 2019 09:29:59 GMT2019-04-21T09:29:59ZComputation 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.Influence of Rotor Structure and Number of Phases on Torque and Flux Weakening Characteristics of V-Shape Interior PM Electrical Machine
http://hdl.handle.net/10985/6752
Influence of Rotor Structure and Number of Phases on Torque and Flux Weakening Characteristics of V-Shape Interior PM Electrical Machine
ASLAN, Bassel; KORECKI, Julien; VIGIER, Thimoté; SEMAIL, Eric
This paper investigates the influence of the rotor structure on torque and flux weakening region of V-shape IPM (interior permanent magnet) machine from TOYOTA PRIUS type. More specifically, always keeping the same magnet volume, the effect of the open angle between the two magnet segments of each V-shape pole on the machine performance is studied. Moreover, in order to examine the impact of phase number on the machine characteristics, PRIUS structure is transformed into 5-phase machine of the same type and dimensions. As well, an optimization procedure is carried out to determine the optimal open angle according to main characteristics. The previous investigation is done by using a free FEM (finite elements methods) program coupled with another optimization program. Using this obtained methodology, the study analyzes for 3-phase and 5-phase machine the average and pulsation of torque, cogging torque, phase EMF (electro-motive force), constant power operating capability.
Post publication CONGRES EVER2011 (International Conference and Exhibition on Ecological Vehicles and Renewable Energies 2011)
Sun, 01 Jan 2012 00:00:00 GMThttp://hdl.handle.net/10985/67522012-01-01T00:00:00ZASLAN, BasselKORECKI, JulienVIGIER, ThimotéSEMAIL, EricThis paper investigates the influence of the rotor structure on torque and flux weakening region of V-shape IPM (interior permanent magnet) machine from TOYOTA PRIUS type. More specifically, always keeping the same magnet volume, the effect of the open angle between the two magnet segments of each V-shape pole on the machine performance is studied. Moreover, in order to examine the impact of phase number on the machine characteristics, PRIUS structure is transformed into 5-phase machine of the same type and dimensions. As well, an optimization procedure is carried out to determine the optimal open angle according to main characteristics. The previous investigation is done by using a free FEM (finite elements methods) program coupled with another optimization program. Using this obtained methodology, the study analyzes for 3-phase and 5-phase machine the average and pulsation of torque, cogging torque, phase EMF (electro-motive force), constant power operating capability.Influence of Rotor Structure and Number of Phases on Torque and Flux Weakening Characteristics of V-shape Interior PM Electrical Machine
http://hdl.handle.net/10985/6737
Influence of Rotor Structure and Number of Phases on Torque and Flux Weakening Characteristics of V-shape Interior PM Electrical Machine
ASLAN, Bassel; KORECKI, Julien; VIGIER, Thimoté; SEMAIL, Eric
This paper investigates the influence of the rotor structure on torque and Flux weakening region of V-shape IPM machine from TOYOTA PRIUS type, more specifically, keeping always the same magnet volume, we study the effect of the open angle between the two magnet segments of each V-shape pole on the machine performance. Moreover, in order to examine the impact of phase number on the machine characteristics, PRIUS structure is transformed into 5-phase machine of the same type and dimensions. As well, an optimization procedure is carried out to determine the optimal open angle according to main characteristics. The previous investigation is done by using a free Finite Elements Methods (FEM) program coupled with another optimization program. Using this obtained methodology the study analyzes for 3-phase and 5-phase machine the average and pulsation of torque, cogging torque, phase back-EMF, constant power operating capability.
Version plus complete dans Journal of Energy and Power Engineering-2012.09 pp1461 a 1471
Sat, 01 Jan 2011 00:00:00 GMThttp://hdl.handle.net/10985/67372011-01-01T00:00:00ZASLAN, BasselKORECKI, JulienVIGIER, ThimotéSEMAIL, EricThis paper investigates the influence of the rotor structure on torque and Flux weakening region of V-shape IPM machine from TOYOTA PRIUS type, more specifically, keeping always the same magnet volume, we study the effect of the open angle between the two magnet segments of each V-shape pole on the machine performance. Moreover, in order to examine the impact of phase number on the machine characteristics, PRIUS structure is transformed into 5-phase machine of the same type and dimensions. As well, an optimization procedure is carried out to determine the optimal open angle according to main characteristics. The previous investigation is done by using a free Finite Elements Methods (FEM) program coupled with another optimization program. Using this obtained methodology the study analyzes for 3-phase and 5-phase machine the average and pulsation of torque, cogging torque, phase back-EMF, constant power operating capability.General Analytical Model of Magnet Average Eddy-Current Volume Losses for Comparison of Multi-phase PM Machines with Concentrated Winding
http://hdl.handle.net/10985/8268
General Analytical Model of Magnet Average Eddy-Current Volume Losses for Comparison of Multi-phase PM Machines with Concentrated Winding
ASLAN, Bassel; SEMAIL, Eric; LEGRANGER, Jerome
this paper studies magnet eddy-current losses in permanent magnet (PM) machines with concentrated winding. First of all, space harmonics of magnetomotive force (MMF) and their influence on magnet losses in electrical machines are investigated. Secondly, analytical model of magnet volume losses is developed by studying the interaction between MMF harmonics wavelengths and magnet pole dimensions. Different cases of this interaction are exhibited according to the ratio between each harmonic wavelength and magnet pole width. Then various losses sub-models are deduced. Using this analytical model, magnet volume losses for many Slots/Poles combinations of 3, 5, and 7 phase machines with concentrated winding are compared. This comparison leads to classify combinations into different families depending on their magnet losses level. Finally, in order to verify the theoretical study, Finite Element models are built and simulation results are compared with analytical calculations
Wed, 01 Jan 2014 00:00:00 GMThttp://hdl.handle.net/10985/82682014-01-01T00:00:00ZASLAN, BasselSEMAIL, EricLEGRANGER, Jeromethis paper studies magnet eddy-current losses in permanent magnet (PM) machines with concentrated winding. First of all, space harmonics of magnetomotive force (MMF) and their influence on magnet losses in electrical machines are investigated. Secondly, analytical model of magnet volume losses is developed by studying the interaction between MMF harmonics wavelengths and magnet pole dimensions. Different cases of this interaction are exhibited according to the ratio between each harmonic wavelength and magnet pole width. Then various losses sub-models are deduced. Using this analytical model, magnet volume losses for many Slots/Poles combinations of 3, 5, and 7 phase machines with concentrated winding are compared. This comparison leads to classify combinations into different families depending on their magnet losses level. Finally, in order to verify the theoretical study, Finite Element models are built and simulation results are compared with analytical calculationsMACHINE ELECTRIQUE TOURNANTE POLYPHASEE A AU MOINS CINQ PHASES
http://hdl.handle.net/10985/7423
MACHINE ELECTRIQUE TOURNANTE POLYPHASEE A AU MOINS CINQ PHASES
ASLAN, Bassel; SEMAIL, Eric; LEGRANGER, Jerome
La présente invention porte sur une machine électrique tournante 5 polyphasée à au moins cinq phases. L'invention trouve une application particulièrement avantageuse dans le domaine des alternateurs, des alterno-démarreurs, ou des machines électriques de traction de véhicule automobile.
Ce brevet s'est opéré dans le cadre de la thèse d'Aslan Bassel au Laboratoire L2EP avec VALEO dans le cadre du projet MHYGALE financé par l'ADEME, avec VALEO responsable du consortium. Le brevet est déposé au nom de VALEO EQUIPEMENTS ELECTRIQUES MOTEUR.
Tue, 01 Jan 2013 00:00:00 GMThttp://hdl.handle.net/10985/74232013-01-01T00:00:00ZASLAN, BasselSEMAIL, EricLEGRANGER, JeromeLa présente invention porte sur une machine électrique tournante 5 polyphasée à au moins cinq phases. L'invention trouve une application particulièrement avantageuse dans le domaine des alternateurs, des alterno-démarreurs, ou des machines électriques de traction de véhicule automobile.Different Virtual Stator Winding Configurations of Open-End Winding Five-Phase PM Machines for Wide Speed Range without Flux Weakening Operation
http://hdl.handle.net/10985/7036
Different Virtual Stator Winding Configurations of Open-End Winding Five-Phase PM Machines for Wide Speed Range without Flux Weakening Operation
NGUYEN, Ngac Ky; SEMAIL, Eric; MEINGUET, Fabien; SANDULESCU, Paul; KESTELYN, Xavier; ASLAN, Bassel
This paper presents a specific control strategy of double-ended inverter system for wide-speed range of open-winding five phase PM machines. Different virtual winding configurations (star, pentagon, pentacle and bipolar) can be obtained by choosing the appropriated switching sequences of two inverters. The motor’s speed range is thus increased.
Tue, 01 Jan 2013 00:00:00 GMThttp://hdl.handle.net/10985/70362013-01-01T00:00:00ZNGUYEN, Ngac KySEMAIL, EricMEINGUET, FabienSANDULESCU, PaulKESTELYN, XavierASLAN, BasselThis paper presents a specific control strategy of double-ended inverter system for wide-speed range of open-winding five phase PM machines. Different virtual winding configurations (star, pentagon, pentacle and bipolar) can be obtained by choosing the appropriated switching sequences of two inverters. The motor’s speed range is thus increased.Flux Weakening Strategy Optimization for Five-Phase PM Machine with Concentrated Windings
http://hdl.handle.net/10985/7315
Flux Weakening Strategy Optimization for Five-Phase PM Machine with Concentrated Windings
JILIN, Gong; ASLAN, Bassel; SEMAIL, Eric; GILLON, Frédéric
The paper applies an Efficient Global Optimization method (EGO) to improve the efficiency, in flux weakening region, of a given 5-phase Permanent Magnet (PM) machine. An optimal control for the four independent currents is thus defined. Moreover, a modification proposal of the machine geometry is added to the optimization process of the global drive. The effectiveness of the method allows solving the challenge which consists in taking into account inside the control strategy the eddy-current losses in magnets and iron. In fact, magnet losses are a critical point to protect the machine from demagnetization in flux-weakening region. But these losses, which highly depend on magnetic state of the machine, must be calculated by Finite Element Method (FEM) to be accurate. The FEM has the drawback to be time consuming. It is why a direct optimization using FEM is critical. EGO method, using sparingly FEM, allows to find a feasible solution to this hard optimization problem of control and design of multi-phase drive.
Sun, 01 Jan 2012 00:00:00 GMThttp://hdl.handle.net/10985/73152012-01-01T00:00:00ZJILIN, GongASLAN, BasselSEMAIL, EricGILLON, FrédéricThe paper applies an Efficient Global Optimization method (EGO) to improve the efficiency, in flux weakening region, of a given 5-phase Permanent Magnet (PM) machine. An optimal control for the four independent currents is thus defined. Moreover, a modification proposal of the machine geometry is added to the optimization process of the global drive. The effectiveness of the method allows solving the challenge which consists in taking into account inside the control strategy the eddy-current losses in magnets and iron. In fact, magnet losses are a critical point to protect the machine from demagnetization in flux-weakening region. But these losses, which highly depend on magnetic state of the machine, must be calculated by Finite Element Method (FEM) to be accurate. The FEM has the drawback to be time consuming. It is why a direct optimization using FEM is critical. EGO method, using sparingly FEM, allows to find a feasible solution to this hard optimization problem of control and design of multi-phase drive.Analytical Model of Magnet Eddy-Current Volume Losses in Multi-phase PM Machines with Concentrated Winding
http://hdl.handle.net/10985/6954
Analytical Model of Magnet Eddy-Current Volume Losses in Multi-phase PM Machines with Concentrated Winding
ASLAN, Bassel; SEMAIL, Eric; LEGRANGER, Jerome
this paper studies magnet eddy-current losses in permanent magnet (PM) machines with concentrated winding. First of all, space harmonics of magnetomotive force (MMF) and their influence on magnet losses in electrical machines are investigated. Secondly, analytical model of magnet volume losses is developed by studying the interaction between MMF harmonics wavelengths and magnet pole dimensions. Different cases of this interaction are studied according to the ratio between each harmonic wavelength and magnet pole width (following flux density variation). Then various losses sub-models are deduced. Finally, using this analytical model, magnet volume losses for many slots/poles combinations of 3, 5, and 7 phase machines with concentrated winding are compared. This comparison leads to classify combinations into different families depending on their magnet losses level. Besides, in order to validate the theoretical study, Finite Element models are built and simulation results are compared with analytical calculations.
Thanks to IEEE. The original PDF of the article can be found at: http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=6342330&url=http%3A%2F%2Fieeexplore.ieee.org%2Fxpls%2Fabs_all.jsp%3Farnumber%3D6342330 MHYGALE, project managed by VALEO-EEM
Sun, 01 Jan 2012 00:00:00 GMThttp://hdl.handle.net/10985/69542012-01-01T00:00:00ZASLAN, BasselSEMAIL, EricLEGRANGER, Jeromethis paper studies magnet eddy-current losses in permanent magnet (PM) machines with concentrated winding. First of all, space harmonics of magnetomotive force (MMF) and their influence on magnet losses in electrical machines are investigated. Secondly, analytical model of magnet volume losses is developed by studying the interaction between MMF harmonics wavelengths and magnet pole dimensions. Different cases of this interaction are studied according to the ratio between each harmonic wavelength and magnet pole width (following flux density variation). Then various losses sub-models are deduced. Finally, using this analytical model, magnet volume losses for many slots/poles combinations of 3, 5, and 7 phase machines with concentrated winding are compared. This comparison leads to classify combinations into different families depending on their magnet losses level. Besides, in order to validate the theoretical study, Finite Element models are built and simulation results are compared with analytical calculations.Signal-based Technique for Fault Detection and Isolation of Inverter Faults in Multi-phase Drives
http://hdl.handle.net/10985/6817
Signal-based Technique for Fault Detection and Isolation of Inverter Faults in Multi-phase Drives
MEINGUET, Fabien; SANDULESCU, Paul; ASLAN, Bassel; LU, Li; NGUYEN, Ngac Ky; KESTELYN, Xavier; SEMAIL, Eric
A method for fault detection and isolation is proposed and applied to inverter faults in multi-phase drives. An analysis of simulations in faulty conditions leads to the derivation of suitable fault indices. These are based on the unbalance of the phase currents and their instantaneous frequency. The method is applied to a five-phase permanent-magnet synchronous machine drive. Simulations and experiments validate the proposed method.
Sun, 01 Jan 2012 00:00:00 GMThttp://hdl.handle.net/10985/68172012-01-01T00:00:00ZMEINGUET, FabienSANDULESCU, PaulASLAN, BasselLU, LiNGUYEN, Ngac KyKESTELYN, XavierSEMAIL, EricA method for fault detection and isolation is proposed and applied to inverter faults in multi-phase drives. An analysis of simulations in faulty conditions leads to the derivation of suitable fault indices. These are based on the unbalance of the phase currents and their instantaneous frequency. The method is applied to a five-phase permanent-magnet synchronous machine drive. Simulations and experiments validate the proposed method.Slot/pole Combinations Choice for Concentrated Multiphase Machines dedicated to Mild-Hybrid Applications
http://hdl.handle.net/10985/6955
Slot/pole Combinations Choice for Concentrated Multiphase Machines dedicated to Mild-Hybrid Applications
ASLAN, Bassel; SEMAIL, Eric; KORECKI, Julien; LEGRANGER, Jerome
This paper presents multiphase permanent magnet machines with concentrated non-overlapped winding as a good candidate for automotive low voltage mild-hybrid applications. These machines often require a trade-off between low speed performances such as high torque density and high speed performances like flux weakening capabilities. This paper describes how to choose a key design parameter to ease this compromise, the slots/poles combination, according to three parameters: winding factor including harmonics factor, rotor losses amount thanks to a comparison factor and radial forces balancing. The comparison criterion are based on both analytical formula and Finite Element Analysis.
Version de l'éditeur à l'adresse suivante : http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6119910&isnumber=6119266
Sat, 01 Jan 2011 00:00:00 GMThttp://hdl.handle.net/10985/69552011-01-01T00:00:00ZASLAN, BasselSEMAIL, EricKORECKI, JulienLEGRANGER, JeromeThis paper presents multiphase permanent magnet machines with concentrated non-overlapped winding as a good candidate for automotive low voltage mild-hybrid applications. These machines often require a trade-off between low speed performances such as high torque density and high speed performances like flux weakening capabilities. This paper describes how to choose a key design parameter to ease this compromise, the slots/poles combination, according to three parameters: winding factor including harmonics factor, rotor losses amount thanks to a comparison factor and radial forces balancing. The comparison criterion are based on both analytical formula and Finite Element Analysis.