Separating Components of the Hysteresis Loss of Non-Oriented Electrical Steels

Landgraf, Fernando José Gomes; Teixeira, Júlio Carlos; Emura, M.; Campos, Marcos Flávio de; Muranaka, C.S.

doi:10.4028/www.scientific.net/msf.302-303.440

Cited by 38 publications

(34 citation statements)

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“…According to Landgraf 13 , along the low induction region (for induction ranging from -0.8 to 0.8 T) the main mechanism of energy dissipation is domain wall movement. The results for non oriented steel reveal that most of the anomalous loss activity takes place in the low induction region and it is concentrated in the first and third quadrants.…”

Section: Anomalous Lossmentioning

confidence: 99%

Anomalous loss hysteresis loop

et al. 2014

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This paper discusses the anomalous loss behavior in two electrical steels types. Starting from a non oriented electrical steel coil, three groups of samples with different grain sizes were produced. Grain oriented steel samples were produced from a commercially available material. The experimental procedure was performed by means of magnetic properties measurements using an Epstein frame. A procedure to draw the hysteresis curve of the anomalous loss is proposed. The results reported that anomalous loss has a different behavior when the two electrical steel types are compared. In non oriented steels anomalous loss is concentrated at the low induction region. In grain oriented steels, a remarkable participation of high induction region is observed.

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Section: Anomalous Lossmentioning

confidence: 99%

Anomalous loss hysteresis loop

et al. 2014

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“…The magnetocrystalline anisotropy K 1 , depends not only on alloy composition but also on the degree of long and short-range order of Ni 3 Fe, which is stable below 600 • C. The grain diameter has also great effect on magnetic losses [18][19][20][21]. When the grain size diameter d increases, the hysteresis loss decreases in proportion to 1/d.…”

Section: Introductionmentioning

confidence: 95%

Influence of process parameters and alloy composition on structural, magnetic and electrical characteristics of Ni–Fe permalloys

Gupta¹,

Raina

Sinha³

2007

Journal of Alloys and Compounds

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“…The excess losses W exc are one of the components of the basic classification of the total energy losses W t [2,[7][8][9][10] in ferromagnetic material, besides the DC losses W DC and the classical eddy current losses W c (where * corresponding author; e-mail: zuzana.bircakova@outlook.com in SMCs [1][2][3][4][5] furthermore the intra-particle and interparticle flowing of eddy currents is considered). W exc result predominantly from the eddy currents induced when the domain walls are moving [2,[7][8][9] and depend inversely on the effective number of movable domain walls n [2,8,9], W exc ≈ 1/n.…”

Section: Energy Losses and Demagnetizing Fieldsmentioning

confidence: 99%

“…The hysteresis loop-dividing line is at the value of magnetic induction B µmax , where the total permeability reaches its maximum. W low AC stand for the energy dissipation due to domain wall displacements and W high AC due to processes of magnetization vector rotation and domain wall nucleation or annihilation [7,[10][11][12].…”

Section: Energy Losses and Demagnetizing Fieldsmentioning

confidence: 99%

Investigation of Magnetization Processes from the Energy Losses in Soft Magnetic Composite Materials

et al. 2017

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Soft magnetic composite materials are composed of small ferromagnetic particles insulated from each other. It gives them some very good properties e.g. the magnetic isotropy and low total energy losses at medium to higher frequencies. On the other hand, their structure gives rise to the negative aspects as the inner demagnetizing fields, resulting in some specifics in magnetization processes leading to the worsening of soft magnetic properties, particularly the excess losses increase and a lowering of permeability. The frequency dependence of excess losses, the low and high induction loss components and the inner demagnetization factors of soft magnetic composites were investigated in order to reveal the proportions of the reversible and irreversible magnetization processes. Higher excess losses were observed in samples with smaller particles or higher non-ferromagnetic content (resin+pores), in which the inner demagnetizing fields were higher. It was explained by lower effective number of movable domain walls in those samples, thus less irreversible magnetization processes. This was confirmed by low and high induction loss analysis, where total losses were divided into low and high induction loss components and plotted vs. frequency.

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Separating Components of the Hysteresis Loss of Non-Oriented Electrical Steels

Cited by 38 publications

References 0 publications

Anomalous loss hysteresis loop

Anomalous loss hysteresis loop

Influence of process parameters and alloy composition on structural, magnetic and electrical characteristics of Ni–Fe permalloys

Investigation of Magnetization Processes from the Energy Losses in Soft Magnetic Composite Materials

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