Abstract：In this paper, a wireless charging system based on orthogonal magnetic structure is proposed. The primary side power control strategy is used to realize the static wireless charging of medium and large multi-rotor unmanned aerial vehicle (UAV). A bipolar transmitter is used on the primary side, and an air-cored receiving coil is placed vertically at the central line of the transmitter to form an orthogonal coupling magnetic field. The finite element simulation is carried out to test and analyze the coupling ability and misalignment tolerance performance of the magnetic coupler, optimize the structure of the transmitter, and then compress the operation space of the magnetic field and reduce the electromagnetic impact on the PTZ equipment. The SS compensation is adopted, and the picked AC power is rectified for charging directly. The relationship between the phase shift angle of the inverter and the charging current and voltage is obtained. The primary side power closed-loop control is used to realize the accurate constant current/constant voltage closed-loop charging for UAV. By building the experimental prototype, the results can be drawn that the system can effectively transmit 500W charging power and the efficiency is 90.86%, simultaneously, the closed-loop charging control of 10A constant current/50V constant voltage can be realized; the receiver is 130g, which can be installed in UAV conveniently.
蔡春伟, 姜龙云, 陈轶, 武帅, 张志鹏. 基于正交式磁结构及原边功率控制的无人机无线充电系统[J]. 电工技术学报, 2021, 36(17): 3675-3684.
Cai Chunwei, Jiang Longyun, Chen Yi, Wu Shuai, Zhang Zhipeng. Wireless Charging System of Unmanned Aerial Vehicle Based on Orthogonal Magnetic Structure and Primary Power Control. Transactions of China Electrotechnical Society, 2021, 36(17): 3675-3684.
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2021, Vol. 36 
