An Easily Scalable Dynamic WPT System for EVs

In this paper, a dynamic wireless power transfer (DWPT) system for charging electric vehicles is presented. It is capable of transfer about 10 kW over a copper to copper coil distance of 20 cm. A novel coil arrangement allows a seamless power transfer with a single circular pickup coil and a comparatively simple control strategy. Additionally, the obtained power level can be easily adjusted with the pickup coil’s length. Measurements show an overall DC to DC efficiency in the range of barely 90 to 94 %.