A finite element model for foil winding simulation

Author

De Gersem, Herbert ; Hameyer, Kay

Author_Institution

ESAT, Katholieke Univ., Leuven, Heverlee, Belgium

Volume

37

Issue

5

fYear

2001

fDate

9/1/2001 12:00:00 AM

Firstpage

3427

Lastpage

3432

Abstract

Foil windings, inductors consisting of a considerable number of foils with a long rectangular cross-section, give raise to severe meshing problems if one tries to consider all geometrical details. On the other hand, treating the winding as a whole by a solid or stranded conductor model, passes over the particular skin effects occurring in this type of winding. Here, a foil conductor model is developed. An additional discretization of finite elements in the foiled region deals with the voltage variation perpendicular to the foils. The constant current condition is weakly imposed. The foil mesh does not coincide with the geometry nor the magnetic mesh, enabling small meshes and independent mesh refinement. The application to a three-phase foil-winding transformer shows a significant saving of computational time, up to 99 % for the test problem

Keywords

digital simulation; mesh generation; power transformers; skin effect; transformer windings; computational time; constant current condition; finite element model; foil conductor model; foil winding simulation; geometrical details; independent mesh refinement; inductors; long rectangular cross-section; meshing problems; skin effects; three-phase foil-winding transformer; voltage variation; Bars; Circuits; Conducting materials; Conductors; Current distribution; Finite element methods; Magnetic flux; Power transformer insulation; Skin effect; Solid modeling;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.952629

Filename

952629