In this paper the authors propose an original time- domain extension of the frequency-domain homogenization of multi-turn windings in FE models. For the winding type at hand (e.g. round conductor with hexagonal packing), an elementary FE model is used for determining dimensionless frequency and time domain coefficients regarding skin and proximity effect. These coefficients are readily utilized for homogenizing the winding in the FE model of the complete device. The method is successfully applied to an axisymmetric 103-turn inductor. The results agree very well with those obtained by an accurate but very expensive FE model in which all turns are finely discretised.
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