Inrush current computations using an optimised analytical hysteresis model

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Purpose-The purpose of this paper is the modelling and estimation of inrush currents while energising power devices under no load conditions. An analytical representation of the nonlinear B-H curve serves for considering the hysteresis behaviour in the numerical model. Design/methodology/approach-The model is implemented into a standard finite element formulation to compute transient problems. Findings-Inrush currents behave like faults in power distribution facilities. Its prior estimation helps to distinguish between operating conditions and faults. Research limitations/implications-The magnetic cores may become extremely magnetised. At such high material saturations, the material characteristics are not measurable accurately. Hence, the results depend on the extrapolation of the B-H curves. Originality/value-The use of first-order reversal curves within the major hysteresis loops helps in a convenient way to estimate peak and shape of the inrush currents.

Original languageEnglish
Pages (from-to)1568-1576
Number of pages9
JournalCOMPEL - The International Journal for Computation and Mathematics in Electrical and Electronic Engineering
Volume36
Issue number5
DOIs
Publication statusPublished - 2017

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Hysteresis
Magnetic cores
Curve
Fault
Hysteresis loops
Extrapolation
Numerical models
Hysteresis Loop
Power Distribution
Reversal
Design Methodology
Saturation
Model
Finite Element
First-order
Formulation
Modeling
Estimate

Keywords

  • First-order reversal curve
  • Hysteresis
  • Inrush current
  • Magnetization curve

ASJC Scopus subject areas

  • Computer Science Applications
  • Computational Theory and Mathematics
  • Electrical and Electronic Engineering
  • Applied Mathematics

Cite this

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title = "Inrush current computations using an optimised analytical hysteresis model",
abstract = "Purpose-The purpose of this paper is the modelling and estimation of inrush currents while energising power devices under no load conditions. An analytical representation of the nonlinear B-H curve serves for considering the hysteresis behaviour in the numerical model. Design/methodology/approach-The model is implemented into a standard finite element formulation to compute transient problems. Findings-Inrush currents behave like faults in power distribution facilities. Its prior estimation helps to distinguish between operating conditions and faults. Research limitations/implications-The magnetic cores may become extremely magnetised. At such high material saturations, the material characteristics are not measurable accurately. Hence, the results depend on the extrapolation of the B-H curves. Originality/value-The use of first-order reversal curves within the major hysteresis loops helps in a convenient way to estimate peak and shape of the inrush currents.",
keywords = "First-order reversal curve, Hysteresis, Inrush current, Magnetization curve",
author = "Werner Renhart and Oszk{\'a}r B{\'i}r{\'o} and Christian Magele and Kurt Preis and Alexander Rabel",
year = "2017",
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language = "English",
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T1 - Inrush current computations using an optimised analytical hysteresis model

AU - Renhart, Werner

AU - Bíró, Oszkár

AU - Magele, Christian

AU - Preis, Kurt

AU - Rabel, Alexander

PY - 2017

Y1 - 2017

N2 - Purpose-The purpose of this paper is the modelling and estimation of inrush currents while energising power devices under no load conditions. An analytical representation of the nonlinear B-H curve serves for considering the hysteresis behaviour in the numerical model. Design/methodology/approach-The model is implemented into a standard finite element formulation to compute transient problems. Findings-Inrush currents behave like faults in power distribution facilities. Its prior estimation helps to distinguish between operating conditions and faults. Research limitations/implications-The magnetic cores may become extremely magnetised. At such high material saturations, the material characteristics are not measurable accurately. Hence, the results depend on the extrapolation of the B-H curves. Originality/value-The use of first-order reversal curves within the major hysteresis loops helps in a convenient way to estimate peak and shape of the inrush currents.

AB - Purpose-The purpose of this paper is the modelling and estimation of inrush currents while energising power devices under no load conditions. An analytical representation of the nonlinear B-H curve serves for considering the hysteresis behaviour in the numerical model. Design/methodology/approach-The model is implemented into a standard finite element formulation to compute transient problems. Findings-Inrush currents behave like faults in power distribution facilities. Its prior estimation helps to distinguish between operating conditions and faults. Research limitations/implications-The magnetic cores may become extremely magnetised. At such high material saturations, the material characteristics are not measurable accurately. Hence, the results depend on the extrapolation of the B-H curves. Originality/value-The use of first-order reversal curves within the major hysteresis loops helps in a convenient way to estimate peak and shape of the inrush currents.

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KW - Hysteresis

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KW - Magnetization curve

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