Wireless Power Transfer System with Decoupled Dual Receivers with Constant Current Output
摘要
In dual-load wireless charging applications, solving the cross-coupling effect between secondary sides is a key factor to improve system performance. To this end, this paper proposes a dual-load WPT system based on DD solenoid coil, aiming to solve the coupling interference problem between the two secondary sides, and each channel adopts LCC-LCC compensation topology. First, the structural characteristics of the DD spiral coil are introduced, and the mutual inductance relationship between the coils is obtained; then the output characteristics of the single-input-double-output LCC-LCC compensation system are analyzed. Without using complex control methods, the system only uses magnetic coupling The converter design can achieve complete decoupling of the two secondary coils, and both channels can achieve load-independent constant current output. At the same time, the dual-channel design can improve space utilization. Finally, the feasibility of the system was verified through simulation.