A Dual-Objective Magnetic Integration-Based WPT Link for UAV Hover Charging With High-Resolution Dynamic Position Detection

Hovering wireless power transfer (WPT) helps uncrewed aerial vehicles (UAVs) to achieve flexible and reliable charging, in which the position detection of the energy pickup receiver is crucial for practical applications. In this letter, a dual-objective magnetic integration based WPT link is proposed for dynamic detection and hovering charging of UAVs. Two pairs of orthogonal windings are integrated into the transmitter side, serving both as a step-down inductor and for high-resolution position detection of the receiver. A corresponding position detection strategy based on a simple voltage/current sensing and coupling mapping mechanism is implemented. An experimental prototype is established and the results demonstrate the effectiveness of this approach.