2 / 2017-06-21 14:04:41

A Novel Approach to Wireless Power Transfer

AC-AC converters, DC-DC power converters, Inductive power transfer, PI control, 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.