Permanent Magnet Assisted Synchronous Reluctance Machine with fractional-slot winding configurations

Chen, Xiao; Wang, Jiabin; Lazari, Panagiotis; Liang, Chen

doi:10.1109/iemdc.2013.6556278

Cited by 37 publications

(21 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…7 shows the geometry of a PMa-SynRM. This type of machine may offer a good solution for PEV applications, since not only the amount of PMs used is low due to a large reluctance torque contributed by the high saliency ratio in the rotor, but the efficiency and torque density are relatively high, owing to the presence of PMs [81,82]. PMa-SynRM like SRM has a low cost, simple and rugged construction in comparison with the other PM machines and can be employed in a wide range of the applications.…”

Section: Other Machine Topologies In Pevsmentioning

confidence: 99%

Limitations/capabilities of electric machine technologies and modeling approaches for electric motor design and analysis in plug-in electric vehicle applications

Yılmaz

2015

Renewable and Sustainable Energy Reviews

View full text Add to dashboard Cite

Section: Other Machine Topologies In Pevsmentioning

confidence: 99%

Limitations/capabilities of electric machine technologies and modeling approaches for electric motor design and analysis in plug-in electric vehicle applications

Yılmaz

2015

Renewable and Sustainable Energy Reviews

View full text Add to dashboard Cite

“…Nonetheless, there are some problems, such as the vibration and acoustic noise in SRMs [13][14][15], and low power factor in SynRMs [16][17][18][19]. Moreover, rare-earth PMs can be partially replaced by low-cost ferrite magnets [20][21][22][23][24][25][26][27][28][29][30][31][32]. Although the performance of electrical machines with ferrite magnets can be improved, there are still some shortcomings, such as low power factor and low torque density due to low remanence of ferrite magnets.…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of a Permanent Magnet-Assisted Synchronous Reluctance Machine with Hybrid Magnets of Ferrite Magnets and Rare-earth PMs

Liu

2017

Preprint

View full text Add to dashboard Cite

Abstract:In this paper, a novel permanent magnet-assisted synchronous reluctance machine (PMASynRM) with rare-earth PMs and ferrite magnets is proposed. The performance of PMASynRM is discussed with respected to the different magnet ratio of rare-earth PMs and ferrite magnets. Some characteristics including the flux density, output torque, cogging torque, output power, power factor, torque ripple, loss, efficiency, and demagnetization are calculated by 2-D finite element analysis (FEA). The analysis results show that the excellent performance can be obtained by using hybrid magnet of rare-earth PMs and ferrite magnets with the suitable magnet ratio, and provide some desirable cost-performance trade-off.

show abstract

Section: Introductionmentioning

confidence: 99%

“…This winding configuration is applicable to a range of electrical machine technologies, viz., permanent magnet machines, induction machines, synchronous wound-field machines and synchronous reluctance machines; and also improves both torque/power density and efficiency of these different machine technologies for a variety of applications. A full comparison of this machine topology with conventional fractional-slot machines has been reported in [23] for permanent magnet assisted synchronous reluctance machines.To improve safety and availability in traction applications, multiple 3-phase motor drives are advantageous [24]. Compared to conventional 3-phase motor drives, the multiple 3-phase motor drives are inherently fault tolerant [25], as loss of one 3-phase system will not lead to a complete loss of traction power.…”

mentioning

confidence: 99%

Six-Phase Fractional-Slot-per-Pole-per-Phase Permanent-Magnet Machines With Low Space Harmonics for Electric Vehicle Application

Patel

Wang

et al. 2014

IEEE Trans. on Ind. Applicat.

Self Cite

View full text Add to dashboard Cite

Abstract-The paper discusses the development of new winding configurations for 6-phase permanent magnet (PM) machines with 18-slot, 8-pole, that eliminates and/or reduces undesirable space harmonics in the stator magneto motive force (MMF). The proposed configuration improves power/torque density and efficiency with a reduction in eddy current losses in the rotor permanent magnets and copper losses in end windings. To improve drive train availability for applications in electric vehicles, the paper proposes the design of 6-phase permanent magnet machine as two independent 3-phase windings. A number of possible phase shifts between two sets of 3-phase windings due to their slot-pole combination and winding configuration is investigated and the optimum phase shift is selected by analyzing the harmonic distributions and their effect on machine performance including the rotor eddy current losses. The machine design is optimized for a given set of specifications for electric vehicle (EV), under electrical, thermal and volumetric constraints, and demonstrated by the experimental measurements on a prototype machine.Index Terms-Design methodology, Design optimization Electric vehicles, Permanent magnet machines. I. INTRODUCTIONECENTLY, the development of fault tolerant motor drives employing permanent magnet (PM) machines for electric vehicles (EV) has received increasing attention due to the emphasis on passenger comfort and safety by the automotive industries around the world [1]- [4]. Although electric vehicles are hailed as fuel economic and low-or no-emissions, their ability to tolerate fault is very critical as a fault in the electric drive will result in a complete loss of power and may lead to an accident [2]. Due to their high torque/power density and higher efficiency compared to other machine technologies, PM brushless machines are preferred technology in traction applications [5], [6], provided they could continue to operate following isolated failures in power train drive.For traction applications, it is an attractive option to employ Manuscript received August 10, 2013; revised October 12, 2013. This work was supported in part by the European Commission for CASTOR project under European Green Cars Initiative through Grant No. 260176.V. I. Patel, J. Wang, W. Wang, and X. Chen are with the Department of Electronic and Electrical Engineering, The University of Sheffield, Sheffield, S13JD, United Kingdom (e-mail: vip.iitd@outlook.com, j.b.wang@sheffield.ac.uk).relatively newer winding configurations of PM brushless machines often referred to as fractional-slot concentrated winding or modular winding [6]- [9], because of their numerous advantages over the overlapped distributed windings in the conventional brushless AC machines, such as high winding factor, high copper packing factor [10], short end-windings, and hence, high efficiency [11], reduction in the likelihood of an inter-phase fault and extremely low cogging torque [12].However, fractional-slot windings produce a large number of space harmonics in the...

show abstract

Permanent Magnet Assisted Synchronous Reluctance Machine with fractional-slot winding configurations

Cited by 37 publications

References 20 publications

Limitations/capabilities of electric machine technologies and modeling approaches for electric motor design and analysis in plug-in electric vehicle applications

Limitations/capabilities of electric machine technologies and modeling approaches for electric motor design and analysis in plug-in electric vehicle applications

Performance Evaluation of a Permanent Magnet-Assisted Synchronous Reluctance Machine with Hybrid Magnets of Ferrite Magnets and Rare-earth PMs

Six-Phase Fractional-Slot-per-Pole-per-Phase Permanent-Magnet Machines With Low Space Harmonics for Electric Vehicle Application

Contact Info

Product

Resources

About