Title :
Microstructural optimization of NO SiFe alloys using the Preisach theory
Author :
Dupré, Luc R. ; Melkebeek, Jan
Author_Institution :
Dept. of Electr. Eng., Ghent Univ., Belgium
fDate :
9/1/2000 12:00:00 AM
Abstract :
In this paper we report on the modeling of magnetic losses in laminated non oriented SiFe alloys, used in electromagnetic devices. It is shown that the integrated lamination dynamic Preisach model allows us to optimize the microstructure taking into account the (distorted) unidirectional flux patterns, appearing in the application. The experimentally obtained effects of the average grain size and the crystallographic texture on each material parameter defined in the Lorentzian-Preisach distribution function and on the switching parameter kd in the dynamic Preisach model are exploited
Keywords :
crystal microstructure; eddy current losses; grain size; iron alloys; laminations; magnetic leakage; magnetic switching; numerical analysis; optimisation; silicon alloys; Lorentzian-Preisach distribution function; Preisach theory; SiFe; average grain size; crystallographic texture; dynamic Preisach model; laminated nonoriented alloys; magnetic losses modeling; microstructural optimization; numerical analysis; switching parameter; unidirectional flux patterns; Crystalline materials; Crystallography; Electromagnetic devices; Electromagnetic modeling; Grain size; Lamination; Magnetic devices; Magnetic flux; Magnetic losses; Microstructure;
Journal_Title :
Magnetics, IEEE Transactions on
