Medium Range Resonant Inductive Wireless Power Transfer

In this paper basic principles of wireless power transfer and QI standards are discussed and measurements of various coil characteristics like mutual coupling and resonant frequencies are presented. After measurements, various simulations were performed on LT-Spice for the design of a midrange Wireless Power Transfer prototype. Afterwards, the circuit is fabricated according to the simulated parameters. A simplified Moving Field Inductive Power Transfer prototype is simulated to analyze its behavior. Finally, investigations on various design parameters for prototype development with respect to challenges and future state of the art for Wireless Power Transfer have been done.