High Power Wireless Power Transfer with Inductive Coupling

Abstract

This paper describes the design of a high power wireless power transfer with a coupled series resonant circuit. Coils distance is 600 mm and a nominal power is 20 kW. The transfer is provided by the inductive coupling of the resonant circuit with 800 mm diameter coils. The resonant circuit is powered by an inverter with IGBT modules working on frequency 130 kHz. The functionality of the realized device is verified by measurements, the evaluation of which is at the end of the article.

Gallium Nitride Power Devices in Magnetically Coupled Resonant Wireless Power Transfer Systems

“…1.12 3.26 3.39 Critical electric field (MV/cm) 0.23 2.2 3.3 Electron Mobility (cm2•V-1•s-1) 1400 950 1500 Dielectric constant (εr) 11.8 9.7 9 Thermal conductivity (W/cm•K) 1. 5 3.8 1.3…”