Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Study on Slot-opening Effect in Interior Permanent Magnet Motor

매입형 영구자석 전동기의 Slot-opening Effect에 관한 연구

  • Fang, Liang (Department of Automotive Engineering, Hanyang University) ;
  • Kim, Sung-Il (Department of Automotive Engineering, Hanyang University) ;
  • Hong, Jung-Pyo (Department of Automotive Engineering, Hanyang University)
  • 방량 (한양대학교 자동차공학과) ;
  • 김성일 (한양대학교 자동차공학과) ;
  • 홍정표 (한양대학교 자동차공학과)
  • Published : 2007.07.18
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Abstract

In this paper, the variation of air-gap field intensity caused by the slot-opening in interior permanent magnet (IPM) motor is investigated, which is for predicting the instantaneous magnetic field more preciously in analytical method further. It is different with the approach of dealing the slot-opening effect on the air-gap field distribution with the "relative permeance" function in surface permanent magnet (SPM) motor. The prediction of the air-gap field in IPM motor is much more complex than SPM motor. In this study, an approximate estimation method is adopted based on analyzing the changing of flux path in both the IPM rotor part and stator part, and in additional an analytical function defined as "relative pole-arc" is built. The finite element method(FEM) is used for confirming the slot-opening effect on the field prediction.

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