Research on Constant Voltage and Constant Current Multiple Output System for Wireless Energy Transmission Based on Dual-Load Magnetically Coupled Resonant Type

Due to the rapid growth of the consumer electronics sector, the demand for multi-load wireless charging is increasing. Some devices require a constant voltage power supply to ensure voltage stability, while others require a constant current power supply to ensure current stability. For this reason, this paper proposes a novel constant-current/constant-voltage system based on a dual-load MCR-WPT. This system achieves simultaneous constant voltage (CV) and constant current (CC) output characteristics at the operating frequency by constructing an output parallel LCC-S network and a T network. A theoretical analysis is carried out in this paper to derive expressions for the system’s resonance conditions, output gain, input impedance, and other key parameters. Finally, simulation is used to verify the system’s ability to perform constant voltage and constant current functions with multiple outputs.