Output Power Pulsation Reduction and Control Design in the Dynamic Wireless Charging Systems for Electric Vehicles

Abstract

The paper proposes a new design method that reduces output power pulsation and controls the charging power in
the dynamic wireless charging systems for electric vehicles. A dual-loop controller is proposed to adjust the
output power. In the dynamic wireless charging systems, the coupling coefficient is variable according to the
position of vehicles. However, the coupling coefficients are required to control the output power. Therefore, this
paper also presents a simple method to estimate the coupling coefficients from information on the transmitting
side. The simulation and experimental results validate the feasibility of the proposed control method. A 1.5 kW
dynamic charging prototype is constructed. The output power is adjustable in dynamic charging process with
error less than 0.2%.