The dependence of power loss on domain wall bowing in single crystals of 3% grain-oriented silicon-iron

Hill, S. L.; Overshott, K.J.

doi:10.1109/tmag.1978.1060001

Cited by 14 publications

(5 citation statements)

References 3 publications

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“…The calculated excess losses using the proposed exponential equation agree with the measurement data well and shows the effectiveness of the proposed method. Previous experimental results in [4] and [10] show that the relationship between the total iron loss and domain wall bowing can be expressed by an exponential equation, which is in the same form as our expression. Even though the experimental data shown in [4] and [10] are not sufficient for us to calculate and make a complete comparison, the result of domain wall bowing degree at 100 Hz predicted by our method agrees with [10, Fig.…”

Section: Results and Discussion 1) Flux Distributionsupporting

confidence: 56%

“…the presence of randomly distributed residual stresses, nonmagnetic or less-magnetic inclusions, and grain boundaries [4]. Domain wall pinning enhances the bowing of domain wall because the movement of domain walls are retarded by the defects, inclusions, etc., in the material [7].…”

Section: B Domain Wall Pinning Effectmentioning

confidence: 99%

“…The evaluation of excess loss in silicon steel plates, which is the most difficult and of vital importance in iron loss prediction or calculation, has also been studied experimentally [4] and numerically [5], [6]. When the amplitude and frequency of the external field are low, the domain walls move as rigid flat surfaces.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of Excess Loss in SiFe Laminations Considering Eddy-Current Dominated Domain Wall Motion

et al. 2015

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To develop efficient silicon steel plates and electric machines using silicon steel laminations, the evaluation of excess loss in silicon steel plates is important. In this paper, investigation on excess loss calculation using the finite element method is carried out. The excess loss, which is mainly due to two factors, lack of flux penetration and domain wall pinning, is considered by the proposed approach using the domain wall bowing degree (DWBD), which depends on the above two factors. The DWBD is obtained using nonlinear eddy-current analysis. The correlation between the excess loss and the DWBD can be expressed as an exponential equation. Using the equation, the excess loss can be predicted under harmonic frequency in the range of 50-2000 Hz. These results can be applied to iron loss estimation, especially, when there are harmonics in the power supply.Index Terms-Domain wall motion, excess loss, numerical analysis, silicon steel plates.

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Section: Results and Discussion 1) Flux Distributionsupporting

confidence: 56%

Section: B Domain Wall Pinning Effectmentioning

confidence: 99%

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Analysis of Excess Loss in SiFe Laminations Considering Eddy-Current Dominated Domain Wall Motion

et al. 2015

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“…ν and σ are permeability and conductivity of the material respectively. To determine B p , firstly DWBD is defined as B sy /B max , where B sy is the surface flux densities of one silicon steel plate and B max is maximum value of the imposed field [3,5]. As shown in Fig.…”

Section: A Methods Of Magnetic Field Analysismentioning

confidence: 99%

“…In this method, the domain wall bowing due to the eddy current and pinning effects, which contributes to the excess loss [5,6], was taken into account by applying an initial flux distribution into a nonlinear eddy current FEA. Domain wall bowing degree (DWBD) was defined and the excess loss was correlated with DWBD using an exponential equation.…”

Section: Introductionmentioning

confidence: 99%

Numerical modeling of pinning and skin effects in silicon steel plate using finite element method

Fang

Guan

Kong

et al. 2015

2015 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices (ASEMD)

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Numerical modeling of iron loss considering the pinning and skin effect in silicon steel sheets is approached in this work. The pinning and skin effect are considered as the main factors of anomalous eddy current loss in silicon steel plates. The pinning is considered by implementing an initial flux distribution in the nonlinear eddy current finite element analysis, which includes the skin effect of flux. Thus the mutual coherence between pinning and skin effect can be achieved in the proposed numerical method. The hysteresis loss and eddy current loss are calculated using the obtained flux and eddy current distribution, while anomalous eddy current loss is spontaneously included in the calculation. The proposed method is applied to different grade non-oriented materials, and the calculated iron losses are compared with the measured data under various frequency.

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Recent research progress in grain-oriented silicon-iron

Ferro¹,

Soardo²

1980

Journal of Magnetism and Magnetic Materials

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The dependence of power loss on domain wall bowing in single crystals of 3% grain-oriented silicon-iron

Cited by 14 publications

References 3 publications

Analysis of Excess Loss in SiFe Laminations Considering Eddy-Current Dominated Domain Wall Motion

Analysis of Excess Loss in SiFe Laminations Considering Eddy-Current Dominated Domain Wall Motion

Numerical modeling of pinning and skin effects in silicon steel plate using finite element method

Recent research progress in grain-oriented silicon-iron

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