Research on Cross-coupling Compensation Method Based on Multi-transmitter WPT System

In the multi-transmitter wireless power transmission system (WPT), the cross-coupling between transmitting coils will affect the operating state of the system, leading to the reduction of the transmission power and efficiency of the system. Aiming at the problem of cross-coupling in multi-transmitter wireless charging system, starting from its equivalent circuit model, the zero-coupling model and cross-coupling model are established respectively, and the influence of cross-coupling between transmitting coils on the transmission efficacy of the system is analyzed. The compensation conditions of the cross-coupling system are given, and the cross-coupling effect of the multi-transmitter WPT system is compensated by adding a compensation reactance to the transmitting loop. The simulation results show that the method can compensate the cross-coupling effect and improve the transmission efficacy of the system.