Comparison of Magnetic Reluctivity Models for FEA Considering Two-Dimensional Magnetic Properties

Author

Yoon, Hee Sung ; Eum, Young Hwan ; Zhang, Yanli ; Shin, Pan-Seok ; Koh, Chang Seop

Author_Institution

Sch. of Electr. & Comput. Eng., Chungbuk Nat. Univ., Cheongju

Volume

45

Issue

3

fYear

2009

fDate

3/1/2009 12:00:00 AM

Firstpage

1202

Lastpage

1205

Abstract

An improved magnetic reluctivity model is developed to describe two-dimensional magnetic properties of anisotropic material. In this model, the behavior of magnetic field intensity is explained in terms of magnitude and direction of magnetic flux density, and reluctivity tensor always has zero off-diagonals. The proposed reluctivity model is incorporated into nonlinear finite element formulation using Newton-Raphson method, and applied to magnetic field analysis of a single-phase transformer core model. By comparing the analyzed B -waveforms with experimental ones, the effectiveness of the proposed reluctivity model and FE formulation is investigated.

Keywords

Newton-Raphson method; finite element analysis; magnetic anisotropy; magnetic flux; steel; tensors; transformer cores; Newton-Raphson method; anisotropic material; grain-oriented electrical steel sheet; magnetic field analysis; magnetic field intensity; magnetic flux density; magnetic reluctivity model; nonlinear finite element formulation; reluctivity tensor; single-phase transformer core model; two-dimensional magnetic properties; Anisotropic; electrical steel sheet; grain-oriented; magnetic reluctivity; two-dimensional magnetic property;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2009.2012558

Filename

4787304