Comparison of rotor eddy current losses in permanent magnet motor and generator

Nannan Zhao, Z. Q. Zhu, Weiguo Liu

科研成果: 书/报告/会议事项章节会议稿件同行评审

7 引用 (Scopus)

摘要

In this paper, the rotor eddy current loss of surface-mounted permanent magnet (SPM) machine is predicted using a simplified analytical model, which accounts for curvature, time and space mmf harmonics, and is applicable to calculate the eddy current loss in both permanent magnets and sleeve, but neglects the influence of stator slotting and eddy current redistribution effect. The analytical method is employed to research two identical prototype SPM machines when they are back-to-back connected mechanically and used as a motor and a generator, respectively. Finite element analysis (FEA) is employed to validate the model. Thermal fields are analyzed using analytical lumped-circuit method based on the obtained eddy current loss and the predicted temperature rises of machines are compared with the measured results. Good agreement between analysis and measurement is achieved. The analysis in this paper reveals that the time harmonics significantly influence the eddy current loss and temperature rises in magnets and sleeve of motor, which causes large difference in temperature rises of the motor and generator.

源语言英语
主期刊名2011 International Conference on Electrical Machines and Systems, ICEMS 2011
DOI
出版状态已出版 - 2011
活动2011 International Conference on Electrical Machines and Systems, ICEMS 2011 - Beijing, 中国
期限: 20 8月 201123 8月 2011

出版系列

姓名2011 International Conference on Electrical Machines and Systems, ICEMS 2011

会议

会议2011 International Conference on Electrical Machines and Systems, ICEMS 2011
国家/地区中国
Beijing
时期20/08/1123/08/11

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