Sensorless direct torque control for IPMSM using an extended kalman filter

초록

This paper investigates a control scheme ofdirect torque control (DTC) based extended kalman filter(EKF) without sensor. The simulation results show thatthe EKF has the robustness to the noise of current andvoltage sensor. Furthermore, current, flux linkage, motorspeed and rotor angle are estimated in real time toimprove the accuracy. The feasibility and effectiveness ofthe proposed drive system is tested under the variabletorque and also be verified by the simulation results.