Anti lock regenerative braking scheme for BLDC-Motor driven electric vehicles

Abstract

BLDC motors are used in Electric Vehicles(EV) due to their low maintenance requirement, small size, high efficiency, large starting torque and low noise operation. Anti-lock Braking system(ABS) has been an important safety feature in traditional vehicles. While applying brakes, ABS prevents the wheels from getting locked and keeps the steering in driver’s control; thereby reducing accidents. This paper proposes a simple method to control BLDC motor for implementing ABS in EV using a combination of Regenerative Braking, short-circuit braking and mechanical braking while requiring no extra ABS sensors. This method will improve the range of EV along with ensuring driver’s safety. MATLAB-SIMULINK environment has been used to do the simulations and the results of the same are discussed in this paper.