Load voltage stabilization of noncontact energy transfer using three resonant circuit

This paper is related to the noncontact energy transfer system which can stabilize the load voltage with no feedback control used three resonant circuits. This system which employs a detachable transformer for magnetic coupling has a leakage inductance. Therefore load voltage decreases greatly in proportion to load electric current. A feedback control circuit of the noncontact energy transfer system is more complicated than that of the contact energy transfer system. Namely, a noncontact energy transfer system with no-feedback system is expected for stabilization of the load voltage. A high efficiency noncontact energy transfer system requires several resonant circuits such as resonant inverter and resonant circuit for load matching. The authors found a novel method which minimizes the load voltage drop rate by using optimized capacitance value of above the resonant circuits