Investigation of a Novel 24-Slot/14-Pole Six-Phase Fault-Tolerant Modular Permanent-Magnet In-Wheel Motor for Electric Vehicles

Energies

Ping Zheng¹  Fan Wu¹  Yu Lei²  Yi Sui¹ 

[1] Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150080, China; E-Mails:;North China Electric Power Research Institute, Beijing 100045, China; E-Mail:

关键词: fractional-slot concentrated winding;    harmonic analysis;    multiphase PMSM;    modular machine;    in-wheel motor;   

DOI  :  10.3390/en6104980

来源: mdpi

【 摘 要 】

In this paper, a six-phase fault-tolerant modular permanent magnet synchronous machine (PMSM) with a novel 24-slot/14-pole combination is proposed as a high-performance actuator for wheel-driving electric vehicle (EV) applications. Feasible slot/pole combinations of the fractional-slot concentrated winding six-phase PMSM are elicited and analyzed for scheme selection. The novel 24-slot/14-pole combination is derived from the analysis and suppression of the magnetomotive force (MMF) harmonics. By making use of alternate-teeth-wound concentrated winding configuration, two adjacent coils per phase and unequal teeth widths, the phase windings of the proposed machine is magnetically, thermally isolated, which offers potentials of modular design and fault tolerant capability. Taking advantage of the leakage component of winding inductance, 1.0 per unit short-circuit current is achieved endowing the machine with short-circuit proof capability. Optimal design of essential parameters aiming at low eddy current losses, high winding factor and short-circuit-proof ability are presented to pave the way for a high-quality system implementation.

【 授权许可】

CC BY   
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