A Wide Coupling Range UAV WPT System Based on Voltage Regulation and Phase Shift Control Strategy

Wireless power transmission (WPT) technology is a new charging technology and has been widely used. Aiming at the problem that the output power of UAV WPT system is easily affected by offset, a control strategy based on voltage regulation and phase shift is proposed in this paper. The output voltage is dynamically adjusted by adjusting the input voltage and the phase shift angle in layers, so that the output voltage can keep stable transmission. The control strategy based on voltage regulation and phase shift is described in detail. The input voltage detection circuit and the input voltage switching circuit are given. The concrete method of phase shift control is given. The output voltage is further controlled by PI phase shift angle to achieve the purpose of phase shift control. Simulink simulation model is established to simulate the deviation of UAV WPT system. The feasibility of the control strategy based on voltage regulation and phase shift is proved by the two-stage switching of input voltage at 80V and 130V combined with phase shift control.