Journal of Northeastern University ›› 2013, Vol. 34 ›› Issue (6): 766-769.DOI: -

• Information & Control • Previous Articles     Next Articles

A Novel Stator Flux Linkage Observer of Permanent Magnet Synchronous Motor

XING Yan, WANG Xu, LIU Yan, YANG Dan   

  1. School of Information Science & Engineering, Northeastern University, Shenyang 110819, China.
  • Received:2012-10-29 Revised:2012-10-29 Online:2013-06-15 Published:2013-12-31
  • Contact: XING Yan
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Abstract: Stator flux estimation is an indispensable part of direct torque control. In order to avoid the integration of the backemf, several improved methods of stator flux estimation were proposed. Several types of state observers have been considered, especially the extended Kalman filter(EKF) has been received more and more attention. The EKF was used to estimate stator flux linkage, and the simulation results indicated that the proposed method not only does well in speed, rotor position and stator flux linkage estimation, but also is robust to motor parameters.

Key words: permanent magnet synchronous motor, stator flux linkage estimation, extended Kalman filter, direct torque control, speedsensorless

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