A dynamical energy‐based hysteresis model for iron loss calculation in laminated cores

Steentjes, Simon; Henrotte, François; Geuzaine, Christophe; Hameyer, Kay

doi:10.1002/jnm.1931

Cited by 17 publications

(14 citation statements)

References 10 publications

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“…In electrical machines, laminated soft magnetic cores exhibit hysteresis losses. The hysteresis losses are the consequence of sudden jumps of the magnetic domain walls (Barkhausen effect) on microscopic scale as declared in Section 1, these phenomena can be covered through a coupled dynamic constitutive model, as presented in [12] or a pragmatic two-scale model [13]. However, the demand on computation time and memory requirements of these models are enormous.…”

Section: Hysteresis Modelmentioning

confidence: 99%

Analysis of vector hysteresis models in comparison to anhysteretic magnetization model

Xiao

Müller

Bavendiek

et al. 2020

Eur. Phys. J. Appl. Phys.

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The design of electrical machines and magnetic actuators require accurate models to represent hysteresis effects in ferromagnetic materials. The magnetic nonlinearity of the iron core is usually considered by an anhysteretic magnetization curve. With this assumption, hysteresis effects in the field computation are completely neglected. This paper presents a comparative study of different hysteresis models, particularly Pragmatic Algebraic Model (PAM) and vector stop model, with regard to a vector anhysteretic anisotropic model. The PAM turns out to be an efficient model considering eddy currents effect. The multi cells stop model relies on a consistent thermodynamic formulation, whose dissipation corresponds to a dry friction-like element. Both models implement a constitutive relationship, in which the magnetic flux density vector as independent input and magnetic eld strength as output. This relationship allows integrating directly in FE with vector magnetic potential formulation. With a rotational single sheet tester (RSST), various tests for a sample of material FeSi24-50A (FeSi) with a silicon proportion of 2.4 wt% can be proceeded under the application of relevant eld distribution. The obtained measured data are applied to parameterize and validate the models. Following numerical experiments the results are compared with those obtained by means of an anhysteretic anisotropic model.

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Section: Hysteresis Modelmentioning

confidence: 99%

Analysis of vector hysteresis models in comparison to anhysteretic magnetization model

Xiao

Müller

Bavendiek

et al. 2020

Eur. Phys. J. Appl. Phys.

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“…The presentation of the generalised theory falls out of the scope of this paper. See [10] for a detailed explanation.…”

Section: D Cross Lamination Modelmentioning

confidence: 99%

“…In practice, the chosen excitation signals are real magnetic field waveforms evaluated at selected probe points in the machine or they are artificially constructed to excite at once a larger class of system inputs (see Section 6). Once the material parameters p k are identified, the approximated lamination models (10) are used as a conventional non-linear constitutive relationship in the macroscopic model (8), which is solved at each time step by a classical Newton-Raphson scheme.…”

Section: Homogenisationmentioning

confidence: 99%

“…All identifications presented in the next section have been done with this unidirectional model. The identified macroscopic material parameters {p k } are then called to be used in the vector approximation (10). This using of the two-step splitting as an opportunity to vectorise the homogenised constitutive relationship is the second pragmatic assumption of the proposed approach.…”

Section: Homogenisationmentioning

confidence: 99%

See 1 more Smart Citation

Pragmatic two‐step homogenisation technique for ferromagnetic laminated cores

Henrotte¹,

Steentjes

Hameyer

et al. 2015

IET Science, Measurement & Technology

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Electromagnetic fields and eddy currents in thin electrical steel laminations are governed by the laws of magnetodynamics with hysteresis. If the lateral dimension of the laminations is large with respect to their width, the fields and currents generated under arbitrary excitation inside a lamination can be resolved accurately by solving a one-dimensional finite element magnetodynamic problem across half the lamination thickness. This mesoscopic model is able to produce, by averaging the necessary information, a homogenised laminated core model, to be used in the macroscopic modelling of electrical devices involving ferromagnetic lamination stacks. As each evaluation of the homogenised model at the macroscale implies a finite element simulation at the mesoscale, a monolithic implementation of the homogenisation method would be extremely time-consuming. Hence the idea of this study to use system identification techniques to construct an algebraic approximation of the homogenised model, to be used as a conventional constitutive relationship in two-or three-dimensional macroscale simulations. This pragmatic two-step homogenisation approach turns out to be quite accurate and efficient in practice, and it entails no implementation in the FE code, provided the latter offers enough flexibility in the description of the material laws.

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“…The second major topic treats the numerical modelling of the electromagnetic behavior of electric and magnetic materials. Steentjes et al propose a macroscopic model for ferromagnetic hysteresis that is well‐suited for finite element implementation. The model relies on a consistent thermodynamic formulation.…”

mentioning

confidence: 99%

Special Issue: The 9th International Symposium on Electric and Magnetic Fields (EMF 2013)

Dupré

Geuzaine

2014

Int J Numerical Modelling

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On behalf of the Editorial Board, we are pleased to present a selection of papers related to the 9th International Symposium on Electric and Magnetic Fields (EMF 2013) held in Bruges, Belgium, April 23-25, 2013.The EMF Symposium series, the first event of which was held in Liège in 1992, aims at building a bridge from recent research advances in mathematical and numerical modelling of electromagnetic fields to the growing number of industrial problems requiring such techniques. The 9th edition was organized by the attracted 108 participants from 19 countries, and featured four keynote speakers.From the 112 presentations in the Symposium program, 42 full papers were submitted for peer review. Twenty-two of these were selected for publication in this special issue. The high scientific and technical quality of the Symposium is well reflected in the quality of the manuscripts contained in this special issue.We wish to express our gratitude to all members of the editorial board-

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A dynamical energy‐based hysteresis model for iron loss calculation in laminated cores

Cited by 17 publications

References 10 publications

Analysis of vector hysteresis models in comparison to anhysteretic magnetization model

Analysis of vector hysteresis models in comparison to anhysteretic magnetization model

Pragmatic two‐step homogenisation technique for ferromagnetic laminated cores

Special Issue: The 9th International Symposium on Electric and Magnetic Fields (EMF 2013)

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