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 shown the effectiveness of the proposed method.
Keywords: PMSM, DTC-SVM, MRAS, Control technology.