Design of a WPT system with adjustable constant current output based on LCL-LCL compensate circuit and phase-shift control strategy

Wireless power transfer(WPT) has been widely concerned, and it is of certain value and significance to study how to realize constant current output under variable load. In this paper, an adjustable constant output current WPT system is proposed based on the LCL-LCL compensation topology and phase shifting network. In order to form a close-loop control, the output current and voltage are feedback to transmit side by linear optocoupler. Furthermore, circuit performance is investigated by Saber software.