What is it about?
The model is simple and a fast tool to reproduce with reasonable accuracy the hysteresis loops based on appropriate parameters of materials under analysis. The proposed extension to the Rivas model has reduced the maximum difference between experimental and modeled values from 19 to 0.08 percent in the approximation to different hysteresis cycles of the magnetic materials studied here.
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Why is it important?
This paper presents an improvement to second-order rational functions approach for fitting of hysteresis loops with simply added functions.
Perspectives
This improvement in the Rivas’ model makes feasible the approach of experimental B-H data employing magnetic parameters of specific materials. The model is simple and offers a fast tool for modeling different kinds of ferromagnetic materials. This proposal is limited to materials composed by intensively coupled magnetic phases. These materials should exhibit a symmetrical hysteresis cycle. Our extension to the Rivas’ model is now being applied in the study of soft magnetic cores prepared by sintered powders and alloys for which the method is valid. The focus is on the calculus of core losses.
Dr. Ing. Marcelo R. Pagnola
INTECIN (UBA - CONICET)
Read the Original
This page is a summary of: Improvement to the second‐order rational functions approximation for hysteresis cycles of magnetic materials, COMPEL The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, November 2009, Emerald,
DOI: 10.1108/03321640910999879.
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