Numerical simulation of a power transformer using 3D finite element method coupled to circuit equation

Author

Bouissou, S. ; Piriou, F. ; Kieny, C. ; Tanneau, G.

Author_Institution

Lab. de Genie Electr. de Paris, CNRS, Gif-sur-Yvette, France

Volume

30

Issue

5

fYear

1994

fDate

9/1/1994 12:00:00 AM

Firstpage

3224

Lastpage

3227

Abstract

Most of the electromagnetic devices work connected to an electric circuit and their numerical simulation in 3D leads to a large number of unknowns. To deal with these problems we propose to use the T₀Ω formulation and describe the way of coupling magnetic and electric circuit equations. The coupling is obtained by expressing the electric vector potential T₀ from the current and the flux of induction and from the magnetic scalar potential Ω. To consider the magnetic nonlinearity we use the Newton-Raphson procedure. This formulation is used to model a 100 MVA power transformer short circuit test in the transient state. The same device is studied at no-load

Keywords

coupled circuits; equivalent circuits; finite element analysis; power transformers; short-circuit currents; simulation; transformer magnetic circuits; transient response; 100 MVA; 3D FEM; 3D finite element method; Newton-Raphson procedure; electric circuit equations; electric vector potential; induction; magnetic circuit equations; magnetic nonlinearity; magnetic scalar potential; numerical simulation; power transformer; transformer short circuit test; transient state; Circuit testing; Coupling circuits; Electric potential; Electromagnetic devices; Finite element methods; Magnetic circuits; Magnetic flux; Nonlinear equations; Numerical simulation; Power transformers;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.312624

Filename

312624