A reconfigurable wireless charging optimization scheme for UAVs with horizontal misalignment tolerance

This is the authors' abstract. We don't add key points for this paper.

Unmanned aerial vehicles (UAVs) are widely used by civilians, the military, and other fields. To ensure the autonomous working ability, high levels of charging convenience are required. Wireless power transfer (WPT) is an excellent solution to the problem due to its convenient charging characteristics. However, when there is a deviation between the UAV and the charging platform, the UAV often cannot be in the optimal charging area. Low efficiency or power fluctuation will occur, which may cause damage to the battery. This paper proposes a reconfigurable and efficient WPT system with horizontal misalignment tolerance to solve the issue of stable and efficient energy transmission between the UAV and the charging platform. The accuracy of the structure is verified through simulation analysis and experimental prototypes. The results show that the WPT system designed in this paper can provide a charging efficiency of more than 90%, and the coverage area of a stable charging area reach more than 80%, under the condition of short-distance transmission. Moreover, with its reconfigurable characteristics, the coupler arrangement can be freely designed according to the required charging scene. This study provides an effective solution to the problem of omni-directional error tolerance in UAV wireless charging.