The Transactions of the Korean Institute of Electrical Engineers B (대한전기학회논문지:전기기기및에너지변환시스템부문B)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

A Sensorless Speed Control of a Permanent Magnet Synchronous Motor that the Estimated Speed is Compensated by using an Instantaneous Reactive Power

순시무효전력을 이용하여 추정속도를 보상한 영구자석 동기전동기의 센세리스 속도 제어

  • 최양광 (인하대 공대 전기공학과) ;
  • 김영석 (인하대 공대 전기공학과) ;
  • 전병호 (인하대 공대 전기공학과)
  • Published : 2003.11.01
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Abstract

This paper proposes a new speed sensorless control method of a permanent magnet synchronous motor using an instantaneous reactive power. In the proposed algorithm, the line currents are estimated by a observer and the estimated speed can be yielded from the voltage equation because the information of speed is included in back emf. But the speed estimation error between the estimated and the real speeds is occured by errors due to measuring the motor parameters and sensing the line current and the input voltage. To minimize the speed estimation error, the estimated speed is compensated by using an instantaneous reactive power. In this paper, the proposed algorithm is not affected by mechanical motor parameters because the mechanical equation is not used. The effectiveness of algorithm is confirmed by the experiments.

Keywords

References

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