An improved two-dimensional numerical modeling method for E-core transformers

Author

Hoke, Anderson F. ; Sullivan, Charles R.

Author_Institution

Thayer Sch. of Eng., Dartmouth Coll., Hanover, NH, USA

Volume

1

fYear

2002

fDate

2002

Firstpage

151

Abstract

A new 2D modeling method for E-core transformers adds an extended flux return path to the model of the section perpendicular to the core. Averaged with a section parallel to the core modified to have the same reluctance as the 3D model, the finite-element simulation results for total magnetic energy and magnetic energy in the windings are within 0.2-5.6% error relative to the 3D model in fifteen of sixteen cases, a large improvement over existing methods. A refinement of fringing-flux calculations for gapped core legs is also presented

Keywords

finite element analysis; magnetic flux; transformer cores; E-core transformers; equal reluctance section; extended flux path; extended flux return path; finite-element simulation; fringing-flux calculations; gapped core legs; magnetic energy; reluctance; total magnetic energy; two-dimensional numerical modeling method; windings; Computer errors; Educational institutions; Erbium; Finite element methods; Iterative methods; Leg; Magnetic cores; Magnetic flux; Numerical models; Transformer cores;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 2002. APEC 2002. Seventeenth Annual IEEE

Conference_Location

Dallas, TX

Print_ISBN

0-7803-7404-5

Type

conf

DOI

10.1109/APEC.2002.989241

Filename

989241