Correction of Homogenized Foil Windings and Lamination Stacks in Transformers via a Subproblem Finite Element Method
Résumé
A subproblem finite element method is developed for efficient modeling of juxtaposed thin regions, both foil windings and lamination stacks, in transformers. Their homogenization is first performed followed by local corrections in certain thin regions separately, surrounded by their insulating layers and the remaining thin regions kept homogenized. Accurate determinations of Joule losses, resistances and inductances are obtained.