A Novel Approach to Wireless Power Transfer

The fundamental capacity of Wireless Power Transfer (WPT) is to permit electrical gadgets to be persistently charged and conquer the requirement of a power line. Remote power can be bridled and actualized in a home to such an extent that a portable PC and telephone gets charged persistently and remotely without the requirement for connecting anything to. In this paper, an inductive wireless power charging system to charge a laptop at 19.5V, 2.3A is proposed. An ac-ac resonant converter is adopted at the front end instead of a dc link. An LLC-SS is employed to reduce the power loss during transmission. The main challenge in WPT system lies in designing efficient transmitter and receiver coils and maintaining a constant voltage at the load for varied distance between the coils. A PI controller is adapted to mitigate the effects of variation in mutual coupling. Resonant coupling will improve the system efficiency and permit the power transfer at kilohertz frequency range.