电容耦合式无线电能传输系统阻抗变换网络的设计

stage by stage design principle of impedance conversion network (ICN) for capacitively coupled wireless power transmission is proposed in this paper. By this method, first of all, the needed equivalent resistances of each ICN are determined according to the power supply, load resistance and its power, as well as the permissible coupling capacitor voltage. Using these equivalent resistances, the analytical formulas to design the inductance and capacitance of the ICN are then obtained. A greater equivalent resistance is obtained through the ICN in the side of load. Therefore, the power can be transferred to the ICN by means of low current and high voltage. Not only the coupled capacitor voltage is reduced, but also the power losses caused by series resistor of the inductor and the capacitor are slowed down. An actual ICN for low power application is designed using proposed method. Correctness and effectiveness of the design principle are verified by both simulation and experimental results.