Journal of South China University of Technology (Natural Science Edition) ›› 2010, Vol. 38 ›› Issue (7): 62-66.doi: 10．3969／j．issn．1000-565X．2010．07．011

• Power & Electrical Engineering • Previous Articles     Next Articles

Analytical Calculation of Iron Loss of Permanent Magnet Motor with Beveling Edges

Wang Hai-tian1  Li Ge 1.2  Hong Xuan1  Wan Ru-yi 1   

  1. 1 School of Electronic Information and Electrical Engineering,Shanghai Jiaotong University,Shanghai 200240,China; 2 Institute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031,Anhui,China
  • Received:2009-09-03 Revised:2010-03-09 Online:2010-07-25 Published:2010-07-25
  • Contact: 李格（1966-）,男,教授,博士,主要从事电机性能优化与控制研究.E-mail： lige@ipp.ac.cn E-mail: whtqx@163.com
  • About author:王海田（1974-）,男,现就职于嘉应学院,任讲师,博士生,主要从事永磁电机性能优化与控制研究
  • Supported by:

    教育部博士点基金资助项目（20060248012）; 上海-加拿大研究理事会合作基金资助课题（06SN07113）; 中国科学院合肥物质科学研究院院长基金项目（YZJJ-4）; 国家“973”计划资助项目（2010GB108003）

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Abstract:

Based on the developed iron loss algorithm of surface-mounted permanent magnet （ PM） motors such as Slemon,and so on,the expressions of the amplitude and its time rate change of flux density in the teeth and in the yoke are derived with the consideration of the beveling edges of PM. Then,a method to analytically calculate the average eddy-current loss density in the teeth and the yoke is presented,and an analytical model of the iron loss of PM motor with beveling edges is presented,finding that beveling edges help to effectively decrease the iron loss. A very good agreement between the experimental results and the calculated ones shows that the proposed method is correct and effective.

Key words: permanent magnet motor, eddy current loss, iron loss, analytical calculation