Speed Control of Three-Phase Induction Motor Using Switching Table-Based Direct Torque Control Technique

In this paper, speed control of three-phase induction motor using switching-tablebased Direct Torque Controlled (ST-DTC) technique is simulated inMATLAB/SIMULINK environment and its performance is studied with step change inload torque. The electromagnetic torque response, speed tracking performances andstator flux trajectory for different value of speeds and torques are obtained and theresults are presented. The simulation results show a better dynamic performance of theinduction motor when using the proposed ST-DTC in comparison with a fixed PIcontroller. Also, the ST-DTC has improved the speed control of the IM over a widerange of operating conditions.