Modeling of dynamic hysteresis for grain-oriented laminations using a viscosity-based modified dynamic Jiles–Atherton model

Baghel, A. P. S.; Shekhawat, Satish Kumar; Kulkarni, S.V.; Samajdar, I.

doi:10.1016/j.physb.2014.04.012

Cited by 18 publications

(12 citation statements)

References 22 publications

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“…δ is a directional parameter with the value +1 for d H /d t > 0 and −1 for d H /d t < 0. The model can also be given in its inverse form which is particularly convenient for existing measurement systems such as Epstein frame and single‐ sheet testers [28]. The inverse JA model has also been successfully implemented in circuit‐field coupled analysis for calculation of transient inrush currents of transformers in [9].…”

Section: Modelling Of Major Loops In Rd and Tdmentioning

confidence: 99%

Modelling of minor hysteresis loops in rolling and transverse directions of grain‐oriented laminations

Baghel¹,

Chwastek

Kulkarni³

2015

IET Electric Power Applications

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The paper presents a modelling approach for symmetrical minor hysteresis loops in the rolling (RD) and transverse (TD) directions for grain-oriented (GO) laminations. A recently proposed modified Jiles-Atherton model which considers crystallographic orientation of GO laminations is extended to predict RD and TD minor loops. A power scaling rule for updation of model parameters is applied for the purpose. Two model parameters (k and a) are updated with the maximum flux density in RD. It gives reasonably accurate prediction in this direction. On the other hand, in TD, three model parameters (k, a and c) are modified to predict minor loops accurately. The proposed model is validated using measured curves in both directions. A close agreement is observed between computed and experimental ones. The model is useful for design and analysis of core joints and corners under rotating and distorted flux patterns.

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Section: Modelling Of Major Loops In Rd and Tdmentioning

confidence: 99%

Modelling of minor hysteresis loops in rolling and transverse directions of grain‐oriented laminations

Baghel¹,

Chwastek

Kulkarni³

2015

IET Electric Power Applications

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“…This dynamic model gives acceptable results but the shape of the hysteresis loop is not well represented. In this work, we introduce a new expression of the excess losses based on the viscous-type equation describing the time lag between the flux density B(t) and the applied field H(t) [10][11][12] as given below in equation ( 4).…”

Section: Dynamic Extension Of the Mija Modelmentioning

confidence: 99%

Accurate Hysteresis Loops Calculation Under the Frequency Effect Using the Inverse Jiles-Atherton Model

Belgasmi¹,

Hamimid

2020

AEM

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Dans ce présent travail, une tentative a été faite pour améliorer la forme des boucles d'hystérésis ainsi qu'un calcul précis des pertes de fer sous l'effet de fréquence. Le modèle inverse de Jiles-Atherton est étendu pour décrire l'aimantation du comportement des matériaux ferromagnétiques en régime dynamique. Une nouvelle formulation du champ magnétique efficace est utilisée qui consiste à modifier l'expression du champ excédentaire pour prendre correctement en compte l'effet des parois du domaine mobile. La nouvelle expression proposée du champ effectif permet une bonne représentation du comportement d'hystérésis magnétique vis-à-vis de l'augmentation de fréquence. Pour valider cette proposition, on compare des boucles d'hystérésis mesurées et modélisées pour différentes fréquences.

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“…Other approach is to measure time dependence of the inductance or susceptibility using a small signal after the bulk field strength change [1,7]. Other authors analyze dynamics hysteresis loops and determine the ratio of the eddy current and the after-effect [8].…”

Section: Magnetic After-effect Measurementmentioning

confidence: 99%

Difficulties Caused by Magnetic After-effect during Identification of the Preisach Hysteresis Model Weighting Function

Novák

2019

Acta Phys. Pol. A

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The time dependence of the magnetic hysteresis caused by thermal activation over an energy barrier is called after-effect, magnetic viscosity, or magnetic relaxation. Magnetic after-effect influences the hysteresis loop shape depending on an excitation filed rate of change, the sample geometry, and the state. The magnetizing loop changes, especially at rounding of peaks at steep part of the loop, severely influences process of the Preisach model weighting function identification from experimental data. This article deals with the after-effect measuring with the aim of determining limiting excitation speed.

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Modeling of dynamic hysteresis for grain-oriented laminations using a viscosity-based modified dynamic Jiles–Atherton model

Cited by 18 publications

References 22 publications

Modelling of minor hysteresis loops in rolling and transverse directions of grain‐oriented laminations

Modelling of minor hysteresis loops in rolling and transverse directions of grain‐oriented laminations

Accurate Hysteresis Loops Calculation Under the Frequency Effect Using the Inverse Jiles-Atherton Model

Difficulties Caused by Magnetic After-effect during Identification of the Preisach Hysteresis Model Weighting Function

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