Rate-dependent extensions of the parametric magneto-dynamic model with magnetic hysteresis

S Steentjes,M Petrun,D Dolinar,G Glehn,K Hameyer

doi:10.1063/1.4975996

Abstract

This paper extends the parametric magneto-dynamic model of soft magnetic steel sheets to account for the phase shift between local magnetic flux density and magnetic field strength. This phase shift originates from the damped motion of domain walls and is strongly dependent on the microstructure of the material. In this regard, two different approaches to include the rate-dependent effects are investigated: a purely phenomenological, mathematical approach and a physical-based one.

Highlights

Soft magnetic steel sheets (SMSSs) are due to their technical as well as economical properties indispensable in many contemporary electrical devices
The aim of this paper is to present and analyze both versions of the upgraded parametric magneto-dynamic (PMD) model that appear to be more versatile than existing models
The discussed extension is used to describe only the excess component of the field produced, whereas the macroscopic eddy currents are calculated with the PMD. Such an approach is more consistent with underlying physics and with the commonly accepted loss separation theory of SMSSs. For this comparison the original voltage-driven PMD model is extended by the two rate-dependent extensions (2) and (3) and implemented using MATLAB/Simulink software

Summary

Introduction

Soft magnetic steel sheets (SMSSs) are due to their technical as well as economical properties indispensable in many contemporary electrical devices Their widespread use requires adequate modelling of magnetization processes inside SMSSs. Especially for the use in applied engineering, such models should be adequately simple, whereas the magnetization processes should be described as accurate as possible. For the use in applied engineering, such models should be adequately simple, whereas the magnetization processes should be described as accurate as possible These two goals are in general very difficult to realize in the modelling process due to complex magnetization processes inside SMSSs. These two goals are in general very difficult to realize in the modelling process due to complex magnetization processes inside SMSSs Such processes include hysteresis and non-linear skin effect due to macro- and microscopic eddy currents. The accurate description of magnetization processes in SMSSs remains a largely unsolved physical and engineering problem.[1]

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