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The DSpace digital repository system captures, stores, indexes, preserves, and distributes digital research material.Sat, 13 Jul 2024 05:56:22 GMT2024-07-13T05:56:22ZMaximum Torque Per Ampere Strategy for a Biharmonic Five-phase Synchronous Machine
http://hdl.handle.net/10985/11323
Maximum Torque Per Ampere Strategy for a Biharmonic Five-phase Synchronous Machine
ZAHR, Hussein; ASLAN, Bassel; SEMAIL, Eric; SCUILLER, Franck
The paper studies the impact of first and third current-harmonic repartition in a five-phase Permanent Magnet machine whose Electromotive Forces (emfs) have first and third harmonics of the same amplitude. With a five-phase machine, it is possible for the torque production to achieve independent controls of the first and third harmonics of currents by using a vector control in each one of the two characteristic orthogonal sub-spaces of the machine. The same torque quality as obtained with a three-phase machine with sinusoidal emf can be thus obtained with a non-sinusoidal emf and with one more supplementary degree of freedom for the control. Based on the Maximum Torque Per Ampere (MTPA) strategy used for three-phase machines, a comparison of the obtained torque/speed characteristics of the machine is achieved using either one or two harmonics. The voltage limits imposed by the Voltage Source Inverter and two different values of the maximum allowed current densities are taken into account for obtaining the optimum repartition between first and third harmonics of currents: it appears that at first, from the point of view of efficiency, the MTPA is not optimal except for low speeds and secondly that the repartition of currents is not trivial and depends for example on the considered maximum current densities.
Fri, 01 Jan 2016 00:00:00 GMThttp://hdl.handle.net/10985/113232016-01-01T00:00:00ZZAHR, HusseinASLAN, BasselSEMAIL, EricSCUILLER, FranckThe paper studies the impact of first and third current-harmonic repartition in a five-phase Permanent Magnet machine whose Electromotive Forces (emfs) have first and third harmonics of the same amplitude. With a five-phase machine, it is possible for the torque production to achieve independent controls of the first and third harmonics of currents by using a vector control in each one of the two characteristic orthogonal sub-spaces of the machine. The same torque quality as obtained with a three-phase machine with sinusoidal emf can be thus obtained with a non-sinusoidal emf and with one more supplementary degree of freedom for the control. Based on the Maximum Torque Per Ampere (MTPA) strategy used for three-phase machines, a comparison of the obtained torque/speed characteristics of the machine is achieved using either one or two harmonics. The voltage limits imposed by the Voltage Source Inverter and two different values of the maximum allowed current densities are taken into account for obtaining the optimum repartition between first and third harmonics of currents: it appears that at first, from the point of view of efficiency, the MTPA is not optimal except for low speeds and secondly that the repartition of currents is not trivial and depends for example on the considered maximum current densities.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; KORECKI, Julien; LEGRANGER, Jerome; SEMAIL, Eric
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, BasselKORECKI, JulienLEGRANGER, JeromeSEMAIL, EricThis 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.New 5-Phase Concentrated Winding Machine with Bi-Harmonic Rotor for Automotive Application
http://hdl.handle.net/10985/9154
New 5-Phase Concentrated Winding Machine with Bi-Harmonic Rotor for Automotive Application
ASLAN, Bassel; SEMAIL, Eric
For a power range from 10 to 30 kW, 5-phase machines are well adapted to low-voltage (48V) supply thanks to their reduced current per phase. For three-phase machines but with higher voltages (>120V), machines with a number of slots per pole and per phase spp equal to 0.5 (as the 12slots/8poles combination) are widely used in hybrid automotive applications when a wide speed range is required. The reason is that the value of spp=0.5 guarantees no sub-harmonics and thus induces low level of permanent magnet rotor losses. In this paper a 20slots/8poles/5phases machine is chosen. With a winding factor of only 0.588 for the first harmonic, this machine is only interesting if its high third harmonic winding factor (0.951) is used. Thus, a new bi-harmonic rotor structure is presented. Thanks to adequate control with flux-weakening and ratio r between first and third harmonic currents, the maximum torque versus speed characteristic is determined.
Wed, 01 Jan 2014 00:00:00 GMThttp://hdl.handle.net/10985/91542014-01-01T00:00:00ZASLAN, BasselSEMAIL, EricFor a power range from 10 to 30 kW, 5-phase machines are well adapted to low-voltage (48V) supply thanks to their reduced current per phase. For three-phase machines but with higher voltages (>120V), machines with a number of slots per pole and per phase spp equal to 0.5 (as the 12slots/8poles combination) are widely used in hybrid automotive applications when a wide speed range is required. The reason is that the value of spp=0.5 guarantees no sub-harmonics and thus induces low level of permanent magnet rotor losses. In this paper a 20slots/8poles/5phases machine is chosen. With a winding factor of only 0.588 for the first harmonic, this machine is only interesting if its high third harmonic winding factor (0.951) is used. Thus, a new bi-harmonic rotor structure is presented. Thanks to adequate control with flux-weakening and ratio r between first and third harmonic currents, the maximum torque versus speed characteristic is determined.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.Influence of Rotor Structure and Number of Phases on First and Second Order Characteristics of TOYOTA PRIUS Electrical Machine Type
http://hdl.handle.net/10985/6753
Influence of Rotor Structure and Number of Phases on First and Second Order Characteristics of TOYOTA PRIUS Electrical Machine Type
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 enrichie dans Journal of Energy and Power Engineering-2012.09 pp1461 a 1471
Sat, 01 Jan 2011 00:00:00 GMThttp://hdl.handle.net/10985/67532011-01-01T00:00:00ZASLAN, 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; LEGRANGER, Jerome; SEMAIL, Eric
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, BasselLEGRANGER, JeromeSEMAIL, Ericthis 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; LEGRANGER, Jerome; SEMAIL, Eric
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, BasselLEGRANGER, JeromeSEMAIL, EricLa 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
MEINGUET, Fabien; SANDULESCU, Paul; ASLAN, Bassel; SEMAIL, Eric; KESTELYN, Xavier; NGUYEN, Ngac Ky
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/10985/70362013-01-01T00:00:00ZMEINGUET, FabienSANDULESCU, PaulASLAN, BasselSEMAIL, EricKESTELYN, XavierNGUYEN, Ngac KyThis 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.Design Considerations of Five-Phase Machine with Double p/3p Polarity
http://hdl.handle.net/10985/13423
Design Considerations of Five-Phase Machine with Double p/3p Polarity
GONG, Jinlin; ZAHR, Hussein; TRABELSI, Mohamed; ASLAN, Bassel; SEMAIL, Eric; SCUILLER, Franck
In the context of traction drives with required torque transient capabilities and a classically wide flux weakening speed range, this paper gives design considerations of a particular Double-Polarity (DP) five-phase machine. Beyond its intrinsic fault tolerance due its five phases, its specificity is the ability to develop torques of comparable values under three kinds of supply: with only first, third or both first and third sinusoidal currents. This property, due to first (E1) and third (E3) harmonic electromotive forces (emf) of comparable values, gives more degrees of freedom for the control of the machine. Unlike three-phase sinusoidal machine, flux weakening is no more the unique solution when maximum voltage is reached. Thanks to the extra degrees of freedom in this kind of machines, more possibilities for the control of the torque and current supply can be applied. At first, elements for the choice of slots/poles combination of such DP machines are given. Then, in case of an Interior Permanent Magnet Synchronous Machine (IPMSM), possible adaptations of the rotor are proposed in order to bring the double p/3p polarity property. The last design criterion considered is the level of eddy-current losses, important at high frequencies. For proof of the concept effectiveness, a prototype with a five-phase fractional-slot concentrated winding of 40 slots and 16/48 poles is presented with results from experimental set-up and Finite Element modeling. A comparison with equivalent no-fault-tolerant three-phase 24 slots /16 poles machines is also carried out.
Mon, 01 Jan 2018 00:00:00 GMThttp://hdl.handle.net/10985/134232018-01-01T00:00:00ZGONG, JinlinZAHR, HusseinTRABELSI, MohamedASLAN, BasselSEMAIL, EricSCUILLER, FranckIn the context of traction drives with required torque transient capabilities and a classically wide flux weakening speed range, this paper gives design considerations of a particular Double-Polarity (DP) five-phase machine. Beyond its intrinsic fault tolerance due its five phases, its specificity is the ability to develop torques of comparable values under three kinds of supply: with only first, third or both first and third sinusoidal currents. This property, due to first (E1) and third (E3) harmonic electromotive forces (emf) of comparable values, gives more degrees of freedom for the control of the machine. Unlike three-phase sinusoidal machine, flux weakening is no more the unique solution when maximum voltage is reached. Thanks to the extra degrees of freedom in this kind of machines, more possibilities for the control of the torque and current supply can be applied. At first, elements for the choice of slots/poles combination of such DP machines are given. Then, in case of an Interior Permanent Magnet Synchronous Machine (IPMSM), possible adaptations of the rotor are proposed in order to bring the double p/3p polarity property. The last design criterion considered is the level of eddy-current losses, important at high frequencies. For proof of the concept effectiveness, a prototype with a five-phase fractional-slot concentrated winding of 40 slots and 16/48 poles is presented with results from experimental set-up and Finite Element modeling. A comparison with equivalent no-fault-tolerant three-phase 24 slots /16 poles machines is also carried out.