Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/59904
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Type: Journal article
Title: Reducing harmonic eddy-current losses in the stator teeth of interior permanent magnet synchronous machines during flux weakening
Author: Han, S.
Soong, W.
Jahns, T.
Guven, M.
Illindala, M.
Citation: IEEE Transactions on Energy Conversion, 2010; 25(2):441-449
Publisher: IEEE-Inst Electrical Electronics Engineers Inc
Issue Date: 2010
ISSN: 0885-8969
1558-0059
Statement of
Responsibility: 
Seok-Hee Han, Wen L. Soong, Thomas M. Jahns, Mustafa K. Guven and Mahesh S. Illindala
Abstract: Interior permanent magnet (IPM) synchronous machines can experience large harmonic eddy-current losses in the stator teeth under flux-weakening operation, significantly depressing the efficiency of these machines at high operating speeds. This paper presents a new analytical/finite-element hybrid design approach to reduce the harmonic eddy-current losses in IPM machine stator teeth during flux-weakening operation. The proposed technique achieves this objective by three steps: 1) developing an analytical index for the harmonic eddy-current losses in IPM machine stator teeth; 2) designing the spatial distribution of the rotor MMF to minimize the analytical index; and 3) synthesizing the rotor geometry to implement the desired rotor MMF function while maintaining the basic machine characteristics unchanged. It will be shown that two-layer rotors, if properly optimized, are significantly more effective than one-layer rotors for the purpose of reducing the harmonic eddy-current losses in IPM machine stator teeth during flux-weakening operation at high speeds.
Keywords: Core losses
flux-weakening operation
harmoniceddy-current losses
high speed
Interior permanentmagnet (IPM)machines, two-layer rotor.
Rights: © Copyright 2010 IEEE – All Rights Reserved
DOI: 10.1109/TEC.2009.2033195
Appears in Collections:Aurora harvest
Electrical and Electronic Engineering publications
Environment Institute publications

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