Finite Element - Integral Equation Full-Wave Multi-Solver for Efficient Modeling of Resonant Wireless Power Transfer

摘要

In resonant WPT (wireless power transfer) systems several components with different material properties are often in the vicinity of the resonant coils. In order to efficiently model such systems a novel full-wave multi-solver is developed where the TVFEM (tangentially continuous vector finite element method) is coupled with a MoM (method of moments) solver based on an integro-differential system specifically designed to model the near singular behavior of the thin coil wires. A simplified sequential version of the multi-solver is also introduced where the electromagnetic field of the coils in homogeneous material background is considered as an incident field and thus computed by the MoM technique as a first step. The incident field then plays the role of the source for the TVFEM utilizing the scattered field formulation, thereby calculating the scattered part of the field as a second step. Numerical results are presented to illustrate the behavior of the multi-solver approach.