Acceleration-based design auxiliary power source for Electric Vehicle applications

This paper proposes a new control strategy and design for auxiliary power source using in Battery Hybrid Electric Vehicle (BHEV) based on acceleration power. The control strategy takes actual speed, acceleration and terminal voltage of supercapacitors (SCs) into account for controlling the energy and power demanded. The detail design of the auxiliary power source and its dynamic control are demonstrated. Cascade control is implemented to control voltage and current of SCs. The benefits of the auxiliary power source in which recapture the regenerative power are examined by numerical simulation availing the real scale vehicle and the fully driving test cycle. Comparison of energy consumption between pure Battery Electric Vehicle (BEV) and BHEV reveals the utilization of the auxiliary power source. The power portions and DC bus voltage regulations are investigated so that validating the proposed system.