The following paper presents a highly efficient wireless power transfer (WPT) system for unmanned aerial vehicle (UAV) applications. The proposed system is designed as a deployable landing pad, where UAVs can be efficiently charged at distances up to 20 cm, while the UAV is landing. The operation frequency is 50 kHz. The current work presents two major contributions that help improve this aspect: a novel RX charging pad geometry and an unconventional design of a low-voltage, high-power DC–AC inverter using discrete MOSFET transistors. Both the pad’s geometry and the inverter are designed specifically for UAV applications. The input DC to output AC system efficiency peaks at approximately 95%. The peak efficiency is obtained at power transfers of 625 W. A major difference between the present design and traditionally used state-of-the-art systems is the low DC supply voltage requirement of just 24 V, compared with typical values that range from 50 up to 300 V at similar output power.

中文翻译：

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用于工业和国防无人机应用的可部署 WPT 系统的电磁设计

以下论文介绍了一种适用于无人机 (UAV) 应用的高效无线电力传输 (WPT) 系统。拟议的系统被设计为一个可展开的着陆垫，在无人机着陆时，无人机可以在最远 20 厘米的距离内有效充电。工作频率为 50 kHz。当前的工作提出了两个有助于改善这方面的主要贡献：一种新颖的 RX 充电板几何形状和一种使用分立 MOSFET 晶体管的低压、高功率 DC-AC 逆变器的非常规设计。垫的几何形状和逆变器都是专为无人机应用而设计的。输入直流到输出交流系统效率的峰值约为 95%。在 625 W 的功率传输时获得峰值效率。