Study on reducing cogging torque of Interior PM Motor for electric vehicle

This paper proposes a new design of rotor shape of Interior Permanent Magnet Synchronous Motor (IPMSM) used for agricultural electric vehicle (AEV). The distribution of the residual magnetic flux density at the air gap is modified by rotor surface shape and V-type magnet angle. As a result, cogging...

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Bibliographic Details
Main Authors: Yong-un Park, Ju-Hee Cho, Sung-Geun Song, Dong-Hwa Chung, Ji-young So, Dae-kyong Kim
Format: Conference Proceeding
Language:English
Subjects:
Harmonic analysis
Lamination
Online Access:Request full text
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Summary:This paper proposes a new design of rotor shape of Interior Permanent Magnet Synchronous Motor (IPMSM) used for agricultural electric vehicle (AEV). The distribution of the residual magnetic flux density at the air gap is modified by rotor surface shape and V-type magnet angle. As a result, cogging torque and physical characteristic have been improved, and back electromotive force (back-EMF) of the suggested model has been improved to be closest to sine wave form compared to initial model. The validity of the proposed rotor shape optimization is confirmed by the manufactured IPM rotor core and measured the performance of the cogging torque.
ISSN:1938-8756
DOI:10.1109/VPPC.2012.6422519