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Three-dimensional field computation for permanent magnet electric machines with finite axial magnet length

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Abstract

Using the method of separate variables, the three-dimensional magnet field solution expressed in Fourier's expansion for permanent magnet (PM) machines with finite axial magnet length is presented in this paper. From the analytic results obtained, much useful and interesting design information for PM machines in three dimensions may be quantitatively deduced. Design curves of the leakage factor and the air gap field characteristic coefficients for PM machines in three dimensions are given and compared with those in two dimensions. All the design curves given in the paper would be useful in preliminary performance calculations for both a.c. and d.c. PM machines.

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Reference

  1. Gu Qishan, Gao H (1985) Air gap field for PM electric machines. Electr Mach Power Syst10:459–470

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  2. Gu Qishan, Gao H (1985) The effect of slotting in PM electric machines. Electr Mach Power Syst 10:273–284

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Authors and Affiliations

  1. Department of Electrical Engineering, Shanghai Jiao Tong University, 1954 Hua Shan Road, 200030, Shanghai, People's Republic of China

    Qishan Gu, Hong Zhong & Qi Hao

Authors
  1. Qishan Gu
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  2. Hong Zhong
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  3. Qi Hao
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Correspondence to Qishan Gu.

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Gu, Q., Zhong, H. & Hao, Q. Three-dimensional field computation for permanent magnet electric machines with finite axial magnet length. Electr Eng 86, 35–43 (2003). https://doi.org/10.1007/s00202-003-0177-3

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  • DOI: https://doi.org/10.1007/s00202-003-0177-3

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