Microstructural optimization of NO SiFe alloys using the Preisach theory

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 k/sub d/ in the dynamic Preisach model are exploited.