Energies 2013, 6(10), 4980-5002; doi:10.3390/en6104980
Article

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

1,* email, 1email, 2email, 1email and 1email
1 Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150080, China 2 North China Electric Power Research Institute, Beijing 100045, China
* Author to whom correspondence should be addressed.
Received: 17 July 2013; in revised form: 10 September 2013 / Accepted: 22 September 2013 / Published: 26 September 2013
(This article belongs to the Special Issue Advances in Hybrid Vehicles)
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Abstract: 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.
Keywords: fractional-slot concentrated winding; harmonic analysis; multiphase PMSM; modular machine; in-wheel motor

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MDPI and ACS Style

Zheng, P.; Wu, F.; Lei, Y.; Sui, Y.; Yu, B. Investigation of a Novel 24-Slot/14-Pole Six-Phase Fault-Tolerant Modular Permanent-Magnet In-Wheel Motor for Electric Vehicles. Energies 2013, 6, 4980-5002.

AMA Style

Zheng P, Wu F, Lei Y, Sui Y, Yu B. Investigation of a Novel 24-Slot/14-Pole Six-Phase Fault-Tolerant Modular Permanent-Magnet In-Wheel Motor for Electric Vehicles. Energies. 2013; 6(10):4980-5002.

Chicago/Turabian Style

Zheng, Ping; Wu, Fan; Lei, Yu; Sui, Yi; Yu, Bin. 2013. "Investigation of a Novel 24-Slot/14-Pole Six-Phase Fault-Tolerant Modular Permanent-Magnet In-Wheel Motor for Electric Vehicles." Energies 6, no. 10: 4980-5002.

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