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World Electric Vehicle Journal is published by MDPI from Volume 9 issue 1 (2018). Articles in this Issue 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 as a courtesy and upon agreement with AVERE.
Open AccessArticle

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

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;
Published: 24 September 2010
PDF [450 KB, uploaded 18 May 2018]


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 Step-skewing; Skewed slot; IPM; EV; HEV
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Ying, H.; Zhang, Z.; Gong, J.; Huang, S.; Ding, X. Application for Step-skewing of Rotor of IPM Motors Used in EV. World Electr. Veh. J. 2010, 4, 532-536.

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