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

The Korean Institute of Electrical Engineers (대한전기학회)
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Design of a Surface-Mounted PMSM Current Controller Using Uncertainty Estimation with a PI Observer

PI 관측기의 불확실성 추정을 이용한 표면부착형 영구자석 동기기의 전류 제어기 설계

  • 김인혁 ((주)한국미쓰비시엘리베이터 전기개발팀) ;
  • 최대식 (명지대 공대 전기공학과) ;
  • 손영익 (명지대 공대 전기공학과)
  • Received : 2011.01.31
  • Accepted : 2011.03.30
  • Published : 2011.05.01
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Abstract

This paper presents a robust current controller for a surface-mounted permanent magnet synchronous motor(SPMSM) by using a PI observer. The decoupling PI(proportional-integral) controller combined with an additional feed-forward compensation has been used for the current controller. The classical feed-forward compensation using velocity information and system parameters is not expected to achieve a robust performance against parameter uncertainties. This paper has adopted a PI observer for the feed-forward compensation to cope with parameter uncertainties without using velocity information. A simple PI observer has been designed to compensate the disturbances that represent velocity coupled terms and parameter uncertainties. Experimental results as well as computer simulations with 630W SPMSM confirm that the proposed approach can deal with the effects of the disturbance and improve the control performance.

Keywords

References

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