A new hybrid method using hinged finite element formulations for the skin effect eddy current problems

Author

Shao, K.R. ; Lavers, J.D.

Author_Institution

Dept. of Electr. Eng., Huazhong Univ. of Sci. & Technol., Wuhan, China

Volume

26

Issue

5

fYear

1990

fDate

9/1/1990 12:00:00 AM

Firstpage

2765

Lastpage

2767

Abstract

The authors describe a coupled FE-BE (finite element-boundary element) method to solve shallow-penetration-depth eddy current problems. A hinged quadrilateral FE developed specifically for the skin-effect problem is used in the conductor region, and the conventional BE is employed in the external region. The two formulations are coupled on the conductor surface and combined with an additional condition obtained from the total current conservation equation. The results of the test examples show that the technique is efficient for strong skin-effect problems. The numerical results in the test examples are largely acceptable compared with the exact analytical solution for ratios of conductor dimension to penetration depth in excess of 40

Keywords

boundary-elements methods; eddy currents; electromagnetic field theory; finite element analysis; numerical methods; skin effect; analytical solution; conductor surface; coupled FE-BE method; hybrid method; numerical coupled finite element-boundary element method; penetration depth; shallow-penetration-depth eddy current problems; skin effect eddy current problems; total current conservation equation; Conductors; Eddy currents; Equations; Finite element methods; Frequency; Iron; Shape; Skin effect; Testing; Vectors;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.104866

Filename

104866