Calculation of 3D eddy current fields using both electric and magnetic vector potential in conducting regions

Author

Albertz, D. ; Henneberger, G.

Author_Institution

Inst. fur Elektrische Maschinen, Tech. Hochschule Aachen, Germany

Volume

34

Issue

5

fYear

1998

fDate

9/1/1998 12:00:00 AM

Firstpage

2644

Lastpage

2647

Abstract

Most papers concerning the calculation of 3D eddy current problems are using a combination of a vector potential and a scalar potential to solve the electromagnetic field in conducting regions. This paper presents the A&oarr;T&oarr; formulation using both the magnetic vector potential A&oarr; and the electric vector potential T&oarr; for the eddy current regions. Since nodal vector potentials with continuous normal components have accuracy problems at interfaces of regions with different permeabilities, edge elements are used for both potentials. The advantages of the presented formulation compared to the mentioned well-known formulations are described in detail. The formulation is applied on the computation of the 3D time-harmonic eddy current field of an induction furnace and is compared to other formulations as well

Keywords

eddy currents; electromagnetic fields; finite element analysis; induction heating; 3D eddy current; conducting region; edge element; electric vector potential; electromagnetic field; induction furnace; magnetic vector potential; Convergence; Eddy currents; Electric potential; Electromagnetic fields; Finite element methods; Furnaces; Magnetic flux; Maxwell equations; Numerical stability; Permeability;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.717612

Filename

717612