COMSOL FEA Modeling of Square and Cirular coil for Inductive Power Transfer in Electric Vehicle Systems

The Inductive Power Transfer System (IPTS) is used to charge the battery of Electric Vehicles wirelessly using a Transmitter and Receiver Coil. The conductive charger which is a plug-in has many drawbacks compared to inductive charging. There are many coil geometries proposed for IPTS but circular and square coils are the popularly used ones. This paper presents the Finite lement Modelling of the circular and square Coil Geometry using COMSOL Multi-physics. The various steps involved in the coil modelling are elaborated in this work. This paper also includes the self-inductance value extraction from the COMSOL and mutual inductance calculation for various air gap separations.