High-Misalignment Tolerance Wireless Charging System for Constant Voltage/Current Output Using Variable Structure Hybrid Topology

This is the authors' abstract. We don't add key points for this paper.

In view of the offset of the coupling mechanism and the use of constant current/constant voltage charging mode for lithium batteries in the electric vehicles wireless power transfer (EV-WPT) system, an EV-WPT system with constant current/constant voltage output and misalignment tolerant capability based on variable structure hybrid topology is proposed. The system combines CLC-S, S-CLC, and variable structure T-type compensation networks, and selects DDQ coils as the coupling mechanism. In order to improve the misalignment tolerant capability of the system under constant current/constant voltage operation mode, this paper designs the circuit parameters of the EV-WPT system and provides a design method for the system compensation parameters. Finally, a 1 kW experimental device is built to verify the correctness of the proposed theory and the superiority of the designed system performance.