A Robust Proportional Integral Sliding Mode Controller Synthesis Applied on Buck Boost DC-DC converter for Electric Vehicle Application

Battery fed electric drives are mostly used for Electric vehicle applications. A various advantages of EV Compared to Hybrid such as emission, it decreases the petroleum resources, waste oil dumping decreases, provide good performance in acceleration and braking conditions. Electric vehicle consists of Dc-Dc converter and electric motor drive system. It is operating in three modes (i) Acceleration mode (ii) Normal steady state (iii) Regenerative braking mode. In acceleration, the power flow from battery to electric motor. In normal steady state converter output maintains in steady state value. In regenerative braking mode the power flows from electric motor to battery. If any variations occur in the battery and the motor side the converter output not maintain in steady state, the converter output produces variable output voltage. Nonlinear control of power converters is an active area of research in the fields of power electronics. This proposed work focuses on Proportional Integral Sliding Mode Control (PISMC) for Buck-Boost DC-DC converter power supply to maintain the constant output voltage. The performance of the proposed proportional integral sliding mode controller is compared to classical PI, PID and SMC controllers. The proposed controller has certain merits like less rise time, maximum peak over shoot, settling time and steady state error.