A Current Sharing Method to Balance Transmission Power of Dual-channel Wireless Power Transfer System

This article proposes a current sharing method for the dual-channel wireless power transfer (WPT) system, which can effectively balance the transmission power of two channels when mutual inductances are inconsistent. The two transmission channels are connected in parallel with the same half-bridge inverters and half-bridge rectifiers on the primary and secondary sides, and the same double-sided inductor-capacitor-capacitor (LCC) resonance compensation networks are adopted. Two shared current paths are respectively employed to maintain balanced power on the double sides at the same time. The simulation results verify the effectiveness of the proposed method in balancing system power and it does not affect the constant current output characteristic.