Analysis of Transmission Characteristics of ECPT System Based on LCLC-LC Compensation

Based on the parameter design of the bilateral LC-type capacitively coupled wireless power transmission system, the T-type LCL impedance network is added to adjust the system voltage gain by adjusting the inductance value in the LCL network at the primary side. The numerical relationship and phase relationship between the output voltage and the input voltage in the resonant state are theoretically derived, and the corresponding mathematical expressions and the calculation expressions of the key parameters of the system are given. Finally, the feasibility and effectiveness of the proposed capacitively coupled wireless power transmission system and its parameter design method are verified by simulation and experiment.