Comparison of circular and rectangular coil transformer parameters for wireless Power Transfer based on Finite Element Analysis

The major parameters of transformers used in wireless Power Transfer (WPT) are self inductance, mutual inductance and coefficient of coupling. Due to unique and complex nature of these transformers, determining these parameters by calculation has limitations which however can be overcome by use of Finite Element Analysis (FEA). This paper presents and compares the parameters of a circular and rectangular coil transformer modelled under different conditions using Ansys Maxwell software. An introduction to WPT system and its transformer model is also presented.