A loosely coupled wireless power transfer system with class-DE
transmitter and multiple receivers <Abstract> This paper presents dc-to-dc WPT system with multiple receivers. For achieving high power-transfer efficiency, the class-DE inverter and the class-E rectifiers are applied to the transmitter and the receivers. By using the numerical design procedure, the component values for satisfying the class-E ZVS/ZDS conditions and specified output power are obtained numerically without any analyses of WPT system and considerations of the impedance matching. The laboratory measurements showed the 65.4% overall power-transfer efficiency with 32W output at 1MHz operating frequency. |