Suppression of Leakage Current in DWPT Systems Using 3-Legged Inverters by Pulse Width and Phase Adjustment

EV dynamic charging systems using 3-legged inverters have been proposed to reduce the implementation costs of wireless power transfer systems. A novel switching method is proposed to suppress undesirable leakage current in stand-by inductors in such systems through pulse width and phase adjustment of gate signals of stand-by legs. Leakage current and EMF suppression of the proposed method were verified in experiments.