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

The Korean Institute of Electrical Engineers (대한전기학회)
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Optimal Design of a PMLSM with 9 Pole 10 Slot for Detent Force Reduction

9극 10슬롯 구조의 영구자석 선형 동기 전동기의 디텐트력 저감을 위한 최적설계

  • 황인성 (충북대 대학원 전기공학과) ;
  • 윤희성 (충북대 대학원 전기공학과) ;
  • 고창섭 (충북대 전기전자컴퓨터 공학부)
  • Published : 2008.04.01
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Abstract

Detent force of a permanent magnet linear motor(PMLSM) consist of cogging and drag forces, and should be minimized for high precision control purpose applications. This paper shows that the cogging force can be reduced effectively by employing 9 pole 10 slot structure. The drag force is minimized by optimizing the total length and shape of the exterior teeth of armature core simultaneously by using($1+{\lambda}$) evolution strategy coupled with response surface method. After optimization, the optimized PMLSM is proven to reduce 95% and 92.6% of the cogging and total detent forces, respectively, and give 12% and 6.4% higher Back-emf and thrust force, respectively, compared with a conventional 12 pole 9 slot structure under the same condition. Additionally, Simulation results by the proposed optimum design are verified by the experiment results.

Keywords

References

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