Analysis and Design of Circular Coil Transformer in a Wireless Power Transfer System for Electric Vehicle Charging Application

This paper analyses the factors influencing wireless power transfer system efficiency for electric vehicle application. Due to complexity in the wireless power transfer transformers, a Finite Element Analysis (FEA) is the key to facilitate the calculation of the mutual inductance and the coupling coefficient. A circular coil transformer model is modelled and simulated in Ansys Maxwell software under different conditions. Simulation results are performed and analyzed. An introduction to WPT transformer model is also presented.