Fast Calculation of AC Copper Loss for High Speed Machines by Zooming Method

  • Katagiri Hirokatsu
    Electromagnetic Engineering Department, Engineering Technology Division, JSOL Corporation
  • Sano Hiroyuki
    Electromagnetic Engineering Department, Engineering Technology Division, JSOL Corporation
  • Semba Kazuki
    Electromagnetic Engineering Department, Engineering Technology Division, JSOL Corporation
  • Mimura Noriyo
    Electromagnetic Engineering Department, Engineering Technology Division, JSOL Corporation
  • Yamada Takashi
    Electromagnetic Engineering Department, Engineering Technology Division, JSOL Corporation

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Abstract

<p>A model reduction method for finite element analysis such as the zooming analysis is conducted to calculate the AC copper loss of high speed electric machines. In this paper, the accuracy of the zooming method is validated by comparison with thorough analysis and the calculation speed in the zooming analysis is found to increase by 7.8 times that of thorough analysis.</p><p>Moreover, the zooming method is applied to the analysis of the copper loss of a litz wire with respect to an interior permanent magnet motor rotating at high speed. The copper loss of the litz wire could be calculated within a practical computation time.</p>

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