Research on Suppression of Higher Harmonics in Wireless Power Transmission System

In a wireless power transmission system using an inverter circuit, there are a large number of higher harmonics in the circuit, and these higher harmonics will increase the switching loss and switching stress of the switching tube. In order to reduce the loss of the inverter circuit and improve the efficiency of the system, based on the LCC-S network and the LCC-LCC network, this paper proposes a method for suppressing higher harmonics of wireless power transmission systems. This method does not affect the fundamental wave while suppressing higher harmonics. At the same time, by analyzing the inverter output current in the circuit, the parameter design method of the harmonic suppression circuit is given. This method is simple and practical. Finally, simulation and experimental results verify the correctness and feasibility of the circuit and parameter design method proposed in this paper.