Direct torque control of permanent magnet synchronous motors based on extended Kalman filter

Zhen Chen*, Xiang Dong Liu, Ya Ping Dai, Yi Huang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Proposes the application of Extended Kalman Filter(EKF) observer on the direct torque controKDTC) of PMSM. EKF observes the stator voltage and current to estimate the rotor speed, rotor position, stator flux linkage and torque. Based on the estimation, the sensorless speed control system of PMSM is built up. The EKF observer provides a good optimal state estimation of PMSM which is a system of nonlinear, parameter variations and disturbance. The results of simulation show that this method can estimate the state variables accurately, improve the performance of direct torque control of PMSM, especially in the low speed region.

Original languageEnglish
Pages (from-to)112-117
Number of pages6
JournalBeijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology
Volume27
Issue numberSUPPL. 1
Publication statusPublished - May 2007

Keywords

  • Direct torque control
  • Extended Kalman filter
  • Permanent magnet synchronous motor
  • Sensorless

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