SENSORLESS DIRECT TORQUE CONTROL OF PMSM DRIVE WITH EKF ESTIMATION OF SPEED, ROTOR POSITION AND LOAD TORQUE OBSERVER

LEB Research laboratory, University of Banta, Department of electrical engineering, street Med El

Hadi Boukhlouf ,Batna 05000, Algeria.

This paper presents the estimation of speed, rotor position and load torque of a robust

sensorless Direct Torque Control (DTC) method for Permanent Magnet Synchronous Motor

(PMSM) based on The Extended Kalman Filter (EKF). The model of PMSM and its EKF

models in MATLAB /Sirnulink simulation environment are developed. The proposed

EKF speed position estimation method is also proved insensitive to the PMSM parameter

variations. Simulation results demonstrate a good performance and robustness.