Design and control of inductive power transfer system for electric vehicles considering wide variation of output voltage and coupling coefficient

Abstract

In this paper, a design and control of the inductive power transfer (IPT) system for electric vehicles are proposed considering wide variation of output voltage and coupling coefficient. The characteristics of the proposed system and a design method of the resonant network are also suggested. By utilizing the battery management converter at the final stage of the system, the design and control can be simplified while managing the output voltage and power of the battery. The 3.3kW laboratory prototype with magnetic power pads are manufactured and the validity of the proposed system is verified through the experimental results of the laboratory prototype.