New finite element techniques for skin effect problems

Abstract

This paper describes fwo new techniques for analyzing linear, steady-state, skin effect phenomena in multi-conductor systems by the finite element method. The first of these is based on a linear superposition principle for the field solution, while the second one is based on an integrodifferential equation field formulation. The techniques are applied to single phase sheet-wound transformer problems in which the current windings are modeled by thin axisymmetric sheets.