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In this paper, we describe a new numerical method for Preisach distribution function identification. This approach is characterized from other identification methods published in the literature by the use of few experimental data extracted from first magnetization curve(usually provided by the manufacturers). In order to entirely discretize the Preisach triangle, the new method uses a cloud of points created and positioned in (H-M)-plane with respect to the experimental data. Mathematical developments revealed a parameter denoted λ used in the positioning and whose variation affects significantly the magnetic properties. Numerical simulations performed for different values of this parameter have shown its great influence on the hysteresis loops shape. Comparisons of the obtained results with experimental data allowed the identification of the λ factor as the ratio of the magnetization at the bend saturation to the magnetization of saturation. The efficiency and applicability of the developed method have been tested through numerical simulations and comparisons with available experimental data.

A NEW APPROACH FOR PREISACH DISTRIBUTION FUNCTION IDENTIFICATION USING FEW EXPERIMENTAL DATA