Design of High-Frequency CC/CV Output Load-Independent WPT System

This paper presents a high-frequency constant current (CC) and constant voltage (CV) output load-independent wireless power transfer (WPT) system. A single switch component on the rectifier changes the CC and CV modes while maintaining zero-voltage switching (ZVS) operation. The proposed circuit eliminates the need for wireless communication from a receiver to a transmitter against load variations. Therefore, the proposed circuit contributes to reducing cost, simplifying systems, and downsizing circuits. The circuit experiments were conducted to verify the effectiveness of the proposed circuits. The obtained results validated the design approach.