Title :
Magnetic fields in nonlinear anisotropic grain-oriented iron-sheet
Author :
Dedulle, J.M. ; Meunier, G. ; Foggia, A. ; Sabonnadiere, J.C. ; Shen, D.
Author_Institution :
Lab. d´´Electrotech. de Grenoble, St. Martin d´´Heres, France
fDate :
3/1/1990 12:00:00 AM
Abstract :
The authors propose a 2-D magnetic field calculation method that takes into account the nonlinear anisotropic property in the grain-oriented steel. An elliptical model is used; the magnetic permeability is represented by a tensor with field-dependent components. This model is applied to a finite-element method using a scalar potential. The iron nonlinearity is considered and a Newton-Raphson method is applied to a family of B-H curves to improve convergence. To minimize variation of flux density between elements, an auto-adaptive process has been used. This modelling of nonlinear anisotropic magnetic fields is applied to a three-phase transformer core
Keywords :
ferromagnetic properties of substances; finite element analysis; iron alloys; magnetic cores; magnetic fields; power transformers; silicon alloys; 2D magnetic field calculation method; B-H curves; Fe-Si; Newton-Raphson method; auto-adaptive process; convergence; elliptical model; field-dependent components; finite-element method; flux density; grain-oriented steel; magnetic permeability; nonlinear anisotropic grain-oriented iron-sheet; scalar potential; three-phase transformer core; Anisotropic magnetoresistance; Convergence; Finite element methods; Iron; Magnetic fields; Magnetic properties; Newton method; Permeability; Steel; Tensile stress;
Journal_Title :
Magnetics, IEEE Transactions on
