Fast Simulation of Wireless Power Transfer Systems With Varying Coil Alignment★ ★

A fast and accurate simulation framework for characterizing inductive power transfer systems with respect to coil alignment and frequency is presented. It combines the finite-element method with homogenization techniques and employs parametric model-order reduction. The reduced-order models feature low systematic errors and allow for thousands of evaluations per second. The proposed method is capable of handling litz wire coils.