Main Circuit and Double Closed-loop BP-PI Control Method Design for Dynamic Wireless Charging System

This paper presents an in-depth study of the working principle, circuit design, and control algorithm of a dynamic wireless charging system based on the magnetically coupled resonance principle. This paper proposes a main circuit design method based on the Boost circuit and a dual closed-loop PI control method. The current of the dynamic wireless charging system is regulated by the conventional PI regulator in the inner loop and the output voltage is controlled by the PI regulator whose parameters are adaptively adjusted by a BP neural network at the outside loop. In addition, a Simulink simulation model is built to simulate the proposed circuit design and the proposed control method, and the simulation results are compared with those of a Buck circuit with a single closed-loop PI control algorithm for the main circuit. The simulation results show the effectiveness of the proposed main circuit design and the control method.