New constraint technique for 3D finite element analysis of multiturn windings with attached electric circuits

Author

Brauer, John R. ; MacNeal, Bruce E. ; Hirtenfelder, Franz

Author_Institution

MacNeal-Schwendler Corp., Milwaukee, WI, USA

Volume

29

Issue

6

fYear

1993

fDate

11/1/1993 12:00:00 AM

Firstpage

2446

Lastpage

2448

Abstract

A new constraint technique for 3-D finite element models of electromagnetic devices with multiturn windings attached to electric circuits is presented. The new technique is easily applied to any 3-D winding shape. The example 3-D transformer has resistors on both its primary and its multiturn secondary windings and high core permeability. Applying the new technique yields winding currents that agree with ideal transformer theory. Additional analyses are made with various linear and nonlinear core materials and differing winding shapes

Keywords

eddy current losses; finite element analysis; magnetic flux; transformer windings; windings; 3-D transformer; 3D finite element analysis; attached electric circuits; constraint technique; differing winding shapes; eddy current losses; electromagnetic devices; linear core materials; magnetic flux density; multiturn windings; nonlinear core materials; winding currents; Circuits; Conductivity; Electromagnetic devices; Equations; Finite element methods; Magnetic materials; Permeability; Photonic crystals; Symmetric matrices; Transformer cores;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.280988

Filename

280988