Investigation on Coil Geometry in WPT Systems for Charging EVs Applications

This paper investigates different coil geometries for designing wireless power transfer (WPT) system for electric vehicle (EV) applications. the system model depend on the lumped parameters model using series- series (SS) compensation topology is briefly discussed. The investigations adopted on comparing the coupling coefficient using Finite Element method (FEM) software when the two coils are laterally and vertically misaligned. Moreover, investigations comprising the electromagnetic flux density distributions. One turn coreless circular planar and square planar coils are simulated and the results depicted and compared for the same wire length. The results show that the circular coil gained higher coupling coefficient and generates more electromagnetic flux density than the square coil.