A PV-Battery Three-Port Wireless Charger for Unmanned Aerial Vehicles

This letter introduces a photovoltaic (PV)-battery wireless charger tailored for unmanned aerial vehicles (UAVs), enabling seamless automatic charging. Sharing the resonant tank enhances efficiency while reducing the number of resonant components required. Employing a bridge converter allows for versatile modulations, facilitating various functions including output regulation, maximum power point tracking, and zero voltage switching. Experimental validation involves the construction of a 200-W prototype, demonstrating a peak efficiency of 92.6% for the three-port converter and supporting four distinct charging modes.