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Research on Constant Current and Constant Voltage Control Method for UAV Based on Switching of Coupling Structure

Wireless power supply system which has the advantages of flexibility, safety, reliability and high autonomy is more and more widely used in the field of UAV. Research on battery life shows that it is necessary to control the output voltage and current of WPT system to protect the UAV battery. However, the traditional control method is complicated to control and increase the secondary volume. In this paper, two sets of coupling structure are designed for UAV lightweight requirements. One of the coupling structures has constant current output characteristics, and the other can achieve constant voltage output. The control method that meets the battery charging requirements by switching the coupling structure reduces the complexity of the control algorithm. Finally, the verification is given through MATLAB simulation, and the results show that the designed system has a 8Aconstant current and 25V constant voltage output function.