A New Design Methodology for a 300-kW, Low Flux Density, Large Air Gap, Online Wireless Power Transfer System

A high-power online wireless power transfer system has been investigated intensively in recent years. However, no literature has focused on the design methodology of the high-power online wireless power transfer system with low flux density, high efficiency, and high control stability. This paper proposed a new design methodology for a 300-kW, over 96 % coil-to-coil efficiency, International Commission on Non-Ionizing Radiation Protection's safety regulation compatible online wireless power transfer system. Using finite-element analysis and experimental results, the proposed design methodology has been evaluated.