Research and Application of Dual-Load wireless power Transmission System

Compared with traditional wired cable connections, the wireless power transmission technology (WPT) has the advantages of flexibility, security, and convenience. The research on multi-load wireless power transmission has received extensive attention due to actual requirements. This paper designs a dual-load wireless power transmission system with constant power output of different power levels. Firstly, the transmission characteristics of the single-load wireless power transmission system are analyzed in detail through system modeling and theoretical analysis. Secondly, the influence of the self-inductance of the second receiving coil and the mutual inductance between the two receiving coils on the power distribution is verified by modeling and analyzing the dual-load system. Thirdly, After optimizing the magnetic coupling structure and performing closed-loop control on the two receiving circuits, a hardware platform is built. Finally, the second receiving circuit is used as the auxiliary power source of the first receiving circuit, and the correctness of the design is verified through experiments.