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

최양광 (인하대 공대 전기공학과)
김영석 (인하대 공대 전기공학과)
전병호 (인하대 공대 전기공학과)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers B / v.52, no.11, 2003 , pp. 577-585 More about this Journal
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
PMSM; Sensorless control; instantaneous reactive power;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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