Numerical schemes for high-resolution dosimetry simulations of automotive low frequency Inductive Power Transfer systems

This paper deals with the simulation of human exposure to magneto-quasistatic fields of Inductive Power Transfer (IPT) systems. Since the applicability of direct eddy current field solvers for such problems becomes disputable when the scale and/or the resolution of geometries increase, both the Scaled-Frequency FDTD method and the Scalar-Potential Finite Difference (SPFD) approach are extended and used here. Numerical examples for the verification of the procedures and an application including shielding effects in nearby conductive structures are presented. The results are compared to the limits recommended by the International Commission on Non-Ionizing Radiation Protection (ICNIRP).