A Review on the Fundamentals and Practical Implementation Details of Strongly Coupled Magnetic Resonant Technology for Wireless Power Transfer

Abstract

Users are increasing their demands on the home appliances they utilize by requiring them to be powered anywhere and anytime. In order to satisfy this need, wireless power transfer helps transfer energy between objects without conductors. For domestic scenarios, strongly magnetic resonant technology offers a method to enable wireless power transfer, even when there exist intermediate non-metallic objects between the wireless power source and the load. This paper reviews this technology with a comprehensive explanation about its fundamentals and physical principles. Some practical issues are also analyzed in this work. Particularly, how the control can be designed and how the coils are built. Finally, this paper also addresses the study about the features of other technologies to power home appliances without conductors. They can be foreseen as the technological competitors of strongly coupled magnetic resonant systems.

Modeling and Experimental Analysis of Three-Dimensional Cross Coil Structure for Misaligned Wireless Power Transfer System

“…When magnetic field is generated in transmitter where the coupling effect occurs effectively, the transfer efficiency and transfer power will be highly likely to decrease, significantly [20,21]. Because only one transmitter coil is power-on in the WPT system with 3D cross coil structure, the coupling among transmitter is low, which will help the system work on a better performance.…”