Analytical design of resonant inductively coupled wireless power transfer system with class-E2 DC-DC converter <Abstract> This paper presents a resonant inductive coupling wireless power transfer (RIC-WPT) system with a class-E2 dc-dc converter along with its analytical design procedure. By using the class-E inverter as a transmitter and the class-E rectifier as a receiver, the designed WPT system can achieve high power-conversion efficiency because of the class-E ZVS/ZDS conditions satisfied in both the inverter and the rectifier. In the experimental results, the system achieved 77.1 % overall efficiency at 10 W (50 ) output power, coil distance 10 cm, and 1 MHz operating frequency. Additionally, the simulation results showed good agreement with the design specifications, which indicates the validity of the design procedure. |