Comparison of three formulations for eddy-current and skin effect problems

Author

Jafari-Shapoorabadi, R. ; Konrad, A. ; Sinclair, A.N.

Author_Institution

Dept. of Electr. & Comput. Eng., Toronto Univ., Ont., Canada

Volume

38

Issue

2

fYear

2002

fDate

3/1/2002 12:00:00 AM

Firstpage

617

Lastpage

620

Abstract

Three finite-element formulations based on different definitions of current density are compared. Formulations I and II are based on incomplete equations for total and source current densities, respectively. Formulation III is based on a complete equation for source current density. To validate the third formulation, a one-dimensional test problem is solved analytically for the magnetic field intensity. The formulations are applied to a nondestructive testing example and a three-phase bus-bar example. Results show that errors due to the use of incomplete equations for current densities increase with frequency and conductor dimensions

Keywords

busbars; current density; eddy current testing; eddy currents; finite element analysis; magnetic fields; skin effect; complete equation; eddy current; finite element method; incomplete equation; magnetic field; nondestructive testing; one-dimensional model; skin effect; source current density; three-phase bus-bar; total current density; Conductors; Current density; Differential equations; Eddy currents; Finite element methods; Magnetic analysis; Magnetic fields; Manufacturing; Nondestructive testing; Skin effect;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.996161

Filename

996161