Magnetostrictive Properties of the Grain-Oriented Silicon Steel Sheet under DC-Biased and Multisinusoidal Magnetizations

Abstract

As an intrinsic property, elasticity of soft material is affected significantly by the externally applied alternating magnetic field. Magnetostrictive properties of the grain-oriented (GO) silicon steel under DC-biased and multisinusoidal magnetizations are measured by using a laser-based measuring system. Magnetostriction curves of the GO silicon steel sheet under different magnetizations are obtained and the influence of frequency and DC bias on the magnetostrictive property is observed and analyzed based on the measured data. In addition, the spectrum of magnetostriction under harmonic magnetization is obtained, and the acoustic noise level of the GO silicon steel sheet represented by the A-weighted decibel value caused by magnetostriction is measured under DC-biased and multisinusoidal magnetizations. The measurement results are applied to the simulation of the three-limb laminated core model, and the effects of DC bias and harmonics on magnetic flux density and displacement are analyzed.

Investigation on magnetostrictive behaviour of a converter transformer influenced by dominant harmonics: AFEMandANNbased approach

“…Zhang et al in Reference 14 analysed the effect of higher harmonic component of the magnetic field on the magnetostrictive behaviour of electrical steel sheet; the authors proposed the use of laser vibrometers for analysing the magnetostrictive strain. Authors in Reference 15 measured the magnetostrictive properties of the silicon steel sheet under DC‐biased and harmonic oscillations using a laser‐based measuring system and simulated the same for a three‐limb core model of the transformer. In one of the recent works, Siebert et al 16 attempted analysing the relationship between noise and vibration of the transformer core to which at the time of the work the main problem posed was the standardisation for magnetic measurements.…”

Iron Oxide-Coupled Graphite/Fe–Si Steel Structure for Analog Computing from Recycling Principle

“…So, too is motivating research systems out of equilibrium, such as iron oxide-coupled Fe-Si steel, which might induce magnetostrictive behavior by perpendicular current injection inside the graphite layers. In this case, proximity effects by coexisting magnetostriction and disorder in lattice structure at the iron oxide surface might be responsible for functional properties in the Fe-Si steel/oxide interface when alternating current signal is injecting in a Fe-Si steel/iron oxide/graphite structure [14,15]. Thereby, the work presents the salient experimental observations of an iron oxide-coupled graphite/Fe-Si steel structure to understand how exchange interactions at the interface of iron oxide/Fe-Si steel can induce SCLC in graphite layers of different compositions.…”