The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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Cogging Torque Analysis According to Unevenly Magnetized Magnets in PM Motor

영구자석 전동기의 불균일하게 자화된 자석에 따른 코깅토크 분석

  • Lee, Dong-ho (Dept. of Electrical Engineering, Incheon National University) ;
  • Jeong, Chae-lim (Dept. of Electrical Engineering, Incheon National University) ;
  • Lee, Seung-Tae (Dept. of Electrical Engineering, Incheon National University) ;
  • Hur, Jin (Dept. of Electrical Engineering, Incheon National University)
  • Received : 2017.10.31
  • Accepted : 2017.12.28
  • Published : 2018.02.01
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Abstract

This paper investigated the effect of unevenly magnetized magnets to the cogging torque. First, through qualitative analysis of cogging torque, the generation of slot harmonic component is explained. Second, it is found that the slot harmonic can be suppressed by locating the magnets under specific condition even if the magnets are irregularly magnetized respect to each other. Finally, it is verified with the experimental result.

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References

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