电流型电场耦合无线电能传输技术的研究

In order to improve the output stability of the capacitively coupled wireless power transmission network, a current-type capacitively coupled wireless power transmission network is proposed in this paper. Its characteristics include, the fixed operating frequency is used, within the range of the allowing change of the load and the coupling capacitance, coupling current is almost approximately invariant with the change of the load impedance and the coupling capacitance. Therefore, the relatively complex phase difference detection and frequency tracking technologies are avoided. At the receiving terminal, both voltage-type and current-type output can be realized, through the property design of magnetic coupling impedance transformation circuit, so as to satisfy the demands of different type load. Under reasonable assumptions, the circuit models of the network are built, the design methods of main parameter are obtained. The correctness of the working principle and the design method of the network are verified by means of both simulations and experiments.