3D-measurements of magnetic flux on joint regions of SiFe steel model core

Yamaguchi, Hirotaka; Pfützner, Helmut; Mulasalihović, E.

doi:10.1016/j.jmmm.2008.04.137

Cited by 3 publications

(3 citation statements)

References 4 publications

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“…However, the authors performed their measurements with 150 μm thick search coils, the inter-laminar spacing reducing the local z-flux. Applying sputtered search coils of about 1 μm thickness, we found local values up to almost 100 mT [8,10]. Outside overlaps, the intensities will be much smaller.…”

Section: Discussionmentioning

confidence: 86%

“…Finally, experiments were also made for the case that additional flux is given in the offplane z-direction. As well known, strong concentrated z-flux with induction B z close to 100 mT arises in the overlap regions of corners and T-joints [8][9][10]. Further it has been shown in [11] that close to these regions, more global -but weaker -z-flux can be expected in cores of several packages, especially if they are shifted, e.g.…”

Section: Introductionmentioning

confidence: 79%

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Domain reconstructions of g.o. SiFe during rotational magnetization considering also 3-D flux components

Galabov

Pfützner

Shilyashki

et al. 2014

JAE

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Domain analyses of modern types of grain-oriented (GO) transformer steel are rare, and they are focussed on single grains under academic magnetization patterns. The present Kerr effect study reveals that grains of industrial, polycrystalline materials react in specific ways according to individual crystallographic orientations. The amount of parameters is very large, especially if additional flux components are given as a further impact. The paper reports a procedure for statistical evaluations of quasi-dynamic Kerr effect images. The instantaneous area ratios of bar domain portion BD, oblique domain portion OD and saturation S are determined with consideration of peak induction BRD in the rolling direction (RD), axis ratio a of rotational magnetization, the angle ψ between B and RD, additional flux Bx in RD or Bz in normal direction. Focus is put on OD(t) which is assumed to be a key function for λ(t), i.e. the course of time of magnetostriction. As the most distinct tendencies, OD increases strongly with increases of a and ψ. OD(t) shows non-sinusoidal course of time with differences of the two halves of cycle. Rotation out of the RD yields sharp onsets of ODs, especially after half-cycle saturation. Additional off-plane flux enhances ODs in a general way.

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Section: Discussionmentioning

confidence: 86%

Section: Introductionmentioning

confidence: 79%

Domain reconstructions of g.o. SiFe during rotational magnetization considering also 3-D flux components

Galabov

Pfützner

Shilyashki

et al. 2014

JAE

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show abstract

“…In the fully processed condition, the magnetic properties of a CRGO will depend on the deviation from exact <001>: crystallographically the easiest direction of magnetisation with lowest magneto-elastic energy. Fabrication of the actual transformers may, however, involve elastic and plastic deformations [3][4][5][6][7][8]. Such deformations affect the magnetic properties: both watt loss and permeability.…”

Section: Introductionmentioning

confidence: 99%

Effect of Uni-Axial Tensile Deformation on Microstructure and Magnetic Properties of 3.2% Si Grain Oriented Electrical Steel

Shekhawat

Basavaraj

Samajdar

et al. 2011

MSF

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Cold rolled grain oriented (CRGO) steel was deformed by uni-axial tensile loading in three different directions: Rolling Direction (RD) (110) , Transverse Direction (TD) (110) and 45° to RD (110) . Deformation behavior was found to be different for the different directions of loading. Such differences were biased by the heat flattening coating and could be captured, effectively, through discrete dislocation dynamics simulations. Results from texture and micro-texture studies, mechanical tests and magnetic measurements show a clear relationship between strain hardening exponent (n) and degradation in magnetic properties (watt loss and permeability). These were also related to misorientation developments, relative recovery and deviations from ideal Goss orientation.

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Dependence of Magnetization Near Saturation on Alloying Content in Ferromagnetic Steel

Shirkoohi

2015

IEEE Trans. Magn.

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3D-measurements of magnetic flux on joint regions of SiFe steel model core

Cited by 3 publications

References 4 publications

Domain reconstructions of g.o. SiFe during rotational magnetization considering also 3-D flux components

Domain reconstructions of g.o. SiFe during rotational magnetization considering also 3-D flux components

Effect of Uni-Axial Tensile Deformation on Microstructure and Magnetic Properties of 3.2% Si Grain Oriented Electrical Steel

Dependence of Magnetization Near Saturation on Alloying Content in Ferromagnetic Steel

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