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Influence of PWM on the proximity loss in permanent magnet brushless AC machines

Iwasaki, S., Deodhar, R., Liu, Y., Pride, A., Zhu, Z.Q. and Bremner, J. (2008) Influence of PWM on the proximity loss in permanent magnet brushless AC machines. Industry Applications Society Annual Meeting, 2008. IAS'O8. IEEE. pp. 1-8. ISSN 0197-2618


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The winding copper loss can be significantly increased due to skin and proximity eddy current effects. The skin and proximity losses due to fundamental frequency current has been investigated in literature, but the influence of PWM on the skin and proximity losses has not been reported. In this paper, 2-D finite element method is employed to analyze the skin and proximity losses in a permanent magnet brushless AC machine, in which significant proximity loss exists due to high frequency current ripples induced by the PWM, as confirmed by both theoretical calculation and experiment. The analyses should be generally applicable to other machines.

Item Type: Article
Copyright, Publisher and Additional Information: © Copyright 2008 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Institution: The University of Sheffield
Academic Units: The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield)
Depositing User: Miss Anthea Tucker
Date Deposited: 11 Aug 2009 11:08
Last Modified: 04 Jun 2014 15:04
Published Version: http://dx.doi.org/10.1109/08IAS.2008.53
Status: Published
Publisher: IEEE
Refereed: Yes
Identification Number: 10.1109/08IAS.2008.53
URI: http://eprints.whiterose.ac.uk/id/eprint/9077

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