Auxiliary Resonant Commutation Pole Converter for Wireless Power Transfer System with Reduced Radiated Emission

This paper proposes an auxiliary resonant commutated pole (ARCP) converter for wireless power transfer (WPT) systems to suppress low-order harmonics in radiated emissions. To further reduce low-order harmonics, selective harmonic elimination pulse width modulation (SHE-PWM) is applied to the ARCP converter. The switching angles for SHE-PWM are determined through numerical analysis, and the switching patterns for 3- and 7-pulse PWM are derived. The effectiveness of the proposed system in reducing radiated emissions is validated using a mini model. The results show that the ARCP converter combined with 3-pulse PWM successfully suppresses third- and fifth-order current harmonics and achieves zero-voltage switching (ZVS) for all switching events. Furthermore, radiated emission measurements confirm reductions of 21 and 24 dB in the third and fifth harmonic components, respectively.