This article proposes a wireless charging system based on a novel magnetic coupler with high coupling capacity for recharging the unmanned aerial vehicles (UAVs). The novel magnetic coupler includes two transmitters and one receiver, in which the transmitters consist of double orthogonal rectangular coils and double orthogonal L-type cores and the receiver is an air-cored receiving coil perpendicular to one coil of the transmitter and parallel to the other coil of the transmitter. The magnetic flux is concentrated in the receiving coil as much as possible while guaranteeing the magnetic flux operation space away from a UAV body by coil structure itself. A prototype of the UAV wireless charging system based on the novel magnetic coupler is built and tested. The experimental wireless charging system designed for Phantom 4 RTK can deliver 102 W at a dc-to-battery efficiency of 91.02% at the maximum output power point, which is adapted to the wireless charging in UAVs.

中文翻译：

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无人机无线充电系统两个正交双L型铁氧体发射器设计


本文提出了一种基于新型磁耦合器的无线充电系统，该耦合器具有高耦合能力，用于为无人机（UAV）充电。新型磁耦合器包括两个发射器和一个接收器，发射器由双正交矩形线圈和双正交L型铁芯组成，接收器为与发射器线圈垂直、与发射器线圈平行的空芯接收线圈。发射器的线圈。通过线圈结构本身保证远离无人机机体的磁通运行空间，同时使磁通尽可能集中在接收线圈内。搭建并测试了基于新型磁耦合器的无人机无线充电系统原型。为 Phantom 4 RTK 设计的实验性无线充电系统可在最大输出功率点提供 102 W 功率，直流电池效率为 91.02%，适用于无人机无线充电。