Optimal Design for Starting -Torque of Line-Start Permanent Magnet Synchronous Motors

직립 기동 영구자석 동기전동기의 기동토크 최적화 설계

  • 김병국 (동아대학교 공대 대학원 전기공학과) ;
  • 문지우 (동아대 공대 일반대학원 전기공학과) ;
  • 김미정 (한국전기연구원 산업전기연구단) ;
  • 이병준 (한국전기연구원 전력설비진단연구그룹) ;
  • 조윤현 (동아대학교 공대 전기공학과)
  • Published : 2007.08.01

Abstract

The line-start permanent magnet synchronous motor has a high efficiency and an advantage in constant speed operation regardless of the effect of load variation. However, it is difficult to predict the performance of characteristics accurately, because of the unbalanced starting torque with the initial starting position of the rotor and the generation of a break torque. In this paper the dynamic characteristics of the line-start permanent magnet synchronous motor are described and compared with those of the squirrel-cage induction motor through the simulation to find the characteristics of the permanent magnets and the rotor bars in the line-start permanent magnet synchronous motor. Finally this paper gives the comparison between the simulation results and the experimental results.

Keywords

References

  1. Li Gies, Guo Zhongbao, Wang Chunyuan, Giu Hong, Guo Daling, 'High Starting Torque and High Efficiency REPM Synchronous Motor', Proceeding of the Seventh International Workshop on Rare Earth-Cobalt Permanent Magnets and Their Applications, Beijing, China, Sept. 1983, Chana Academic Publishers, pp.13-20
  2. M.A Rahman and T.M. Osheiba, 'Performance of a large line-start permanent magnet synchronous motor', IEEE Trans. Energy Conversion, vol. 5, pp.211-217, Mar.1990 https://doi.org/10.1109/60.50833
  3. T.J.E. Miller, 'Synchronization of line-start permanent magnet AC motor', IEEE Trans., vol.PAS-103, Juillet 1984, pp 1822-1828