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Rare earth free, traction motor for electric vehicle

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1 Author(s)
Morimoto, M. ; Dept. of Electr. & Electron. Eng., Tokai Univ., Hiratsuka, Japan

In this paper, rare earth free, traction motor is discussed. An induction motor does not require any permanent magnet as its principle. The technology of an induction motor is thought as a mature technology. The author introduces new technology into an induction motor. The iron core of the motor is made by Soft Magnetic Composite (SMC). Conventionally, the core is consisted of laminated punched steel. The core shape is 2D. In his study, the shape of stator core has 3D shape. The teeth of e stator core is extended in order to enlarge the pole surface area in the same outer volume of the motor. Experimental motor shows that the efficiency improves, and maximum output power increases at the same external volume of the motor.

Published in:

Electric Vehicle Conference (IEVC), 2012 IEEE International

Date of Conference:

4-8 March 2012