Application for Step-skewing of Rotor of IPM Motors Used in EV

Hongliang Ying; Zhouyun Zhang; Jun Gong; Surong Huang; Xuanming Ding

doi:10.3390/wevj4030532

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World Electric Vehicle Journal is published by MDPI from Volume 9 issue 1 (2018). Previous articles were published by The World Electric Vehicle Association (WEVA) and its member the European Association for e-Mobility (AVERE), the Electric Drive Transportation Association (EDTA), and the Electric Vehicle Association of Asia Pacific (EVAAP). They are hosted by MDPI on mdpi.com as a courtesy and upon agreement with AVERE.

Article

24 September 2010

Application for Step-skewing of Rotor of IPM Motors Used in EV

and

Technique center of Shanghai Edrive Co., Ltd, Shanghai, 200240, China

Department of Automation, Shanghai University, Shanghai, 200072, China

Author to whom correspondence should be addressed.

World Electr. Veh. J.2010, 4(3), 532-536;https://doi.org/10.3390/wevj4030532

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Abstract

Technique of Step-skewing of rotor (SSR) is much efficient to reduce the harmonics of Back EMF, minimize cogging torque and torque ripple. In EV & HEV applications, it can conspicuously increase the torque control precision, decrease torque ripple, thus improve the vehicle comfort. This paper analyzed the no-load and load performance of motor with step-skewed rotor and another with slot-skewed stator. Through comparing the performance of each motor, this paper revealed the advantage of step-skew technique. The conclusion is verified by FEA and experiment. Copyright form of EVS25.

Keywords:

Step-skewing; Skewed slot; IPM; EV; HEV

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