Application of Preisach model to grain oriented steels: comparison of different characterizations for the Preisach function p(α, β)

To take into account scalar hysteresis in magnetic calculations, accurate models are required to correctly describe soft magnetic material behavior. The Preisach model makes it possible to do so if its distribution function p(/spl alpha/, /spl beta/) is well determined. This paper presents a comparison of four methods of characterization of the function that uses different peak magnetization level loops of grain oriented sheets. The choice of a lorentzian function with a term of interaction field shows interesting results.