Title :
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
fDate :
9/1/1994 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
