A Wireless Power Supply System Based on a Receiving End of Mountain-Type Core

Aiming at the problems of low coupling coefficient and low efficiency of magnetic coupling in rail dynamic wireless power supply system, this paper proposes a receiving end mountain core design, which has higher coupling coefficient and mutual inductance value than the traditional E, U, and S cores, and can provide higher power density and higher system efficiency at close weight and volume. Based on the characteristics of LCC-S primary coil current constant and secondary side output voltage constant, this paper builds a guide-rail dynamic wireless power supply experimental platform, the secondary side realizes constant voltage closed loop through synchronous buck, and it is verified that the system achieves 85.7% efficiency at 150 W output, compared with the traditional receiver core structure, the wireless power supply system designed in this design has higher coupling coefficient, mutual inductance and system efficiency under a small coupling area, which has significant advantages.