Abstract:
This paper presents a speed sensorless with direct torque control scheme using space vector modulation (DTC-SVM) for permanent magnet synchronous motor (PMSM) drive based a Model Reference Adaptive System (MRAS) algorithm. The MRAS is utilized to estimate speed and reduced the torque ripple & improves the accurate output. In other hand the use of SVM method reduces the torque ripple while achieving a good dynamic response. Simulation results are presented and show the effectiveness of the proposed method.

Keywords: Model Reference Adaptive System (MRAS), permanent magnet synchronous machine (PMSM), space vector modulation (SVM), direct torque control (DTC), Sensorless drive