Unmanned Aerial Vehicle Wireless Power Transfer System with Light-Weight and Low Leakage Flux Interference

The inspection of power transmission line is very important to the reliable operation of the power network. Meanwhile, the UAV inspection is of great help to improve the inspection efficiency. In view of the actual situation that unmanned aerial vehicle (UAV) is faced with insufficient power and limited cruise range, a novel UAV wireless power transfer (WPT) system is designed in this work. A novel magnetic structure with light receiver and low magnetic leakage interference is proposed. The magnetic structure simulation model is created, and the optimization design and performance analysis are presented. Based on the LCL-S compensation structure, the power system circuit is designed, modeled and analyzed. Finally, the experimental prototype is trial produced to verify the proposal performance. The test results reveal that the transmission power of the designed system can reach 107.5 W, the overall system efficiency is 81.4 %, and the receiver weighs only 56 g.