A Series-Series-CL Resonant Converter for Wireless Power Transfer in Auxiliary Power Network

Abstract

This paper proposes a series-series-CL resonant converter for wireless power transfer (WPT) in auxiliary power network for 10 kV SiC MOSFET based power electronics building block. The topology of the converter can compensate re-active power thus increase system efficiency, generate a constant output voltage which can be tuned by changing one pair of LC parameters (or distance between coils), and keep a symmetrical coil structure which facilitates the design and optimization. A WPT converter prototype is built that features in 48 V to 48 V conversion, 100 W, 92 % efficiency, 4 pF isolation capacitance, and 24 kV insulation voltage.