Wireless Power Transfer Using An Autoresonant ZVS Converter

This paper is intended to present a practical and cutting-edge wireless power transfer system. Hard switching methods and topologies are getting obsolete since both the industry and consumer grade products are getting normalized in such a manner as to have more optimal performance and better Electromagnetic compatibility (EMC) results. There are many continuous improvement projects which tackle how to improve the efficiency of the hard switched semiconductor-based power converters, most of them having arrived to a dead-end because of the limitations of the current semiconductor products. In the last years new technologies and switching methods like zero voltage, current switching and auto resonant power supplies have been put into practice, but they are quite new and have a small market share due to their high price and the immaturity of the technology.