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A Sensorless Speed Control of an Interior Permanent Magnet Synchronous Motor based on an Instantaneous Reactive Power  

Kang Hyoung-Seok (인하대 공대 전기공학과)
Joung Woo-Taik (인하대 공대 전기공학과)
Kim Young-Seok (인하대 공대 전기공학과)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers B / v.55, no.2, 2006 , pp. 107-115 More about this Journal
Abstract
In this paper, a new speed sensorless control based on an instantaneous reactive power is proposed for the interior permanent magnet synchronous motor(IPMSM) drives. In proposed algorithm, the current observer estimates the line currents and the estimated speed can be yielded from the voltage equation because the information of speed is included in back EMF. To implement speed sensorless control, the current observer is composed by using the voltage equation of the IPMSM in the stationary reference frame fixed to the stator. The estimated speed of the rotor is composed by using the voltage equation of the IPMSM in the rotating reference frame fixed to the rotor The estimated speeds to minimize the speed error compensated by using the instantaneous reactive power. The instantaneous reactive power is calculated on the rotating reference frame fixed to the rotor. The effectiveness of the preposed algorithm is confirmed by the experiments.
Keywords
IPMSM; Sensorless Control; Instantaneous Reactive Power;
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