Numerical Calculation of Induced Currents in Human Model Exposed to Intermediate Frequency Magnetic Fields Generated by Household Induction Heater

摘要

Strong magnetic fields expose in the vicinity of an induction heater, so the induced current in an anatomically human model of 2.5x2.5x2mm~3 voxel size by intermediate frequency magnetic fields generated by a household induction heater is computed by the impedance method in this paper. Computed results are modified the current densities averaged over a cross-section of 1cm~2 perpendicular to the direction of induced currents to compare with the basic restriction. It is found from the results that the averaged current density in the abdomen which is close to the magnetic sources is greater than any other part. The maximum value of the induced current appears at the muscle of the lower abdomen, and is about 5 mA/m~2 which is 1/8 of the basic restriction for public exposure established by the ICNIRP.