Direct Torque Controlled Drive Train for Electric Vehicle

Electric vehicle (EV) due to its running zero emission, sustainability and efficiency is of interest for future transportation. In-wheel technology has been one of the main research concentration points in last decade. BLDC motor is on demand for in-wheel application because of its high efficiency, torque/speed characteristics, high power to size ratio, high operating life and noiseless operation. In this paper direct torque control (DTC) switching technique of BLDC motor for EV propulsion system is proposed and simulated in MATLAB/ SIMULINK. The Simulation results show effective control of torque and remarkable reduction of torque ripple amplitude as compared to conventional reported switching techniques. Improvements of in-wheel motor’s torque controllability result to have more efficient and safer electric vehicle. The simulation results of proposed switching system are satisfactory and show correct performance of system. Index terms — BLDC motor; In-wheel motors; Direct torque control (DTC); Electric vehicle.