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A flux-mnemonic permanent magnet brushless motor for electric vehicles

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4 Author(s)
Chuang Yu ; Department of Electrical and Electronic Engineering, University of Hong Kong, Hong Kong, China ; Chau, K.T. ; Xinhua Liu ; Jiang, J.Z.

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In this paper, a new permanent magnet (PM) brushless motor is proposed for electric vehicles. The key is to incorporate the concept of memory motors, namely, the online tunable flux-mnemonic PMs, into the stator doubly fed doubly salient PM motor, hence achieving effective air-gap flux control. By further employing the outer-rotor and double-layer-stator topology, the proposed motor takes the definite advantages of compact structure, low armature reaction, and direct-drive capability. Increasingly, this motor can offer the unique features of pole dropping and pole reversing. Finite element analysis and, hence, computer simulation are given to verify the validity of the proposed motor.

Published in:

Journal of Applied Physics  (Volume:103 ,  Issue: 7 )