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Reduction eddy current loss design and analysis of in-wheel type vehicle traction motor

This paper deals with a method for reduction of eddy current loss in permanent magnet for high power in-wheel type motor applicable to electric vehicle traction. The In-Wheel type motor was built before this paper written. However, it has a problem of eddy current loss in permanent magnet. Therefore, this paper presented the eddy current loss reduction design in permanent magnet and analysis of in-wheel type vehicle traction motor. Rotor shape design for eddy current reduction and eddy current loss according to segmentation of permanent magnet are presented. Presented design approaches, dramatic reduction of eddy current in permanent magnet is achieved. 2D-FEM is used for rotor shape design and 3D-FEM is used for eddy current loss analysis.