Performance of the speed sensorless Induction Motor drive for traction application with MRAS type speed and flux estimator

Abstract

In the paper the Model Reference Adaptive System (MRAS) type estimator is applied in the sensorless Direct Torque Control with Space Vector Modulation (SVM-DTC) of Induction Motor (IM) drive. Sensorless control algorithm is tested on the traction 50kW induction motor drive. Whole control structure was implemented in the laboratory set-up with DS1103 card with Power PC 750GX DSP processor using C language. Dynamical performance of the drive and the estimator properties in field weakening and low speed regions for traction drive system are presented.