Efficiency Optimization Control Strategy for Non-Communication Dual-Side Control Magnetic Coupling Wireless Power Transfer System
摘要
Magnetic coupling wireless power transfer (MCWPT) technology has broad application prospects due to its high degree of freedom and safety in energy exchange. In recent years, various control methods have been designed for MCWPT systems to improve energy transfer efficiency. Among them, the dual-side control (DSC) method, which uses a dual active bridge converter (DAB) structure and effectively controls both the transmitter side and the receiver side, can further optimize efficiency through the coordination of multiple control variables. However, most dual-side control strategies rely on wireless communication modules, and there has been little research on efficiency optimization for non-communication dual-side control strategies. Therefore, this paper proposes a non-communication dual-side control strategy that optimizes the switching loss and transmission loss of the MCWPT system through dual-side soft-switching and impedance matching (IM) control based on the perturbation and observation (P&O) algorithm, respectively, and realizes constant voltage (CV) output within the working range, reducing the instability and additional costs brought about by wireless communication. Finally, the feasibility of the control strategy is verified through simulation.