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1.
Suitability of the double Langevin function for description of anhysteretic magnetization curves in NO and GO electrical steel grades
Simon Steentjes, Martin Petrun, G. Glehn, Drago Dolinar, Kay Hameyer, 2017, izvirni znanstveni članek

Opis: This paper compares the match obtained using the classical Langevin function, the tanh function as well as a recently by the authors proposed double Langevin function with the measured anhysteretic magnetization curve of three different non-oriented electrical steel grades and one grain-oriented grade. Two standard non-oriented grades and a high-silicon grade (Si content of 6.5%) made by CVD are analyzed. An excellent match is obtained using the double Langevin function, whereas the classical solutions are less appropriate. Thereby, problems such as those due to propagation of approximation errors observed in hysteresis modeling can be bypassed.
Ključne besede: polarization, magnetization measurement, magnetic materials, hysteresis models, Langevin function, electrical steel, saturation
Objavljeno v DKUM: 03.08.2017; Ogledov: 1159; Prenosov: 418
.pdf Celotno besedilo (652,05 KB)
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2.
Rate-dependent extensions of the parametric magneto-dynamic model with magnetic hysteresis
Simon Steentjes, Martin Petrun, G. Glehn, Drago Dolinar, Kay Hameyer, 2017, izvirni znanstveni članek

Opis: 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.
Ključne besede: magnetic hysteresis, eddies, magnetic flux, viscosity, magnetic fields, magneto-dynamic models, parametric
Objavljeno v DKUM: 03.08.2017; Ogledov: 1187; Prenosov: 424
.pdf Celotno besedilo (567,72 KB)
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