FEM analysis of 3-D transformer leakage field and eddy current loss in the windings

Author

Guangzheng, Ni ; Xiaoming, Xu ; Weiying, Cheng ; Gangru, Li ; Baidun, Jian ; Zhenghu, Fang ; Xianghua, Li ; Jitai, Xu

Author_Institution

Dept. of Electr. Eng., Zhejiang Univ., Hangzhou, China

Volume

28

Issue

2

fYear

1992

fDate

3/1/1992 12:00:00 AM

Firstpage

1382

Lastpage

1385

Abstract

The authors present a method which resolves the three-dimensional eddy current field into a 3-D time harmonic field external to the windings and n axisymmetric eddy current fields near the coils as an approximation for engineering applications. Because the isoparametric FEM (finite element method) with 3-D vector potential, is used in the time harmonic field analysis whereas, in the n axisymmetric eddy current field analysis, B-spline FEM is used, the method presented can give a solution with an accuracy quite acceptable for engineering purposes. The distributions of leakage fields, eddy current losses, and heat source in the windings obtained are compared with the test results

Keywords

eddy current losses; finite element analysis; magnetic leakage; power engineering computing; power transformers; transformer windings; 3-D time harmonic field; 3-D transformer leakage field; 3-D vector potential; B-spline FEM; FEM analysis; eddy current loss; heat source; power transformers; three-dimensional eddy current field; windings; Coils; Eddy current testing; Eddy currents; Harmonic analysis; Magnetic analysis; Matrices; Power engineering and energy; Reliability engineering; Spline; Temperature;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.123950

Filename

123950