Comparison of engineering methods of loss prediction in thin ferromagnetic laminations

Zirka, S. E.; Moroz, Y.I.; Marketos, P.; Moses, Anthony John

doi:10.1016/j.jmmm.2008.04.083

Cited by 17 publications

(7 citation statements)

References 11 publications

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“…It should be mentioned that the CVD-fabricated sheet thickness is 0.30 mm, thinner than 0.35 mm (the thickness of the alloys in this work). As seen in Table 2, by taking into account the thickness effect on core losses [23,24], the Fe-6.5% Si prepared in this work demonstrates as low core losses as compared to the CVD-fabricated samples reported in the literature.…”

Section: Resultsmentioning

confidence: 70%

Fabrication and magnetic properties of Fe–6.5% Si alloys by magnetron sputtering method

Tian

2010

Journal of Alloys and Compounds

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Section: Resultsmentioning

confidence: 70%

Fabrication and magnetic properties of Fe–6.5% Si alloys by magnetron sputtering method

Tian

2010

Journal of Alloys and Compounds

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“…Equation (7) can be also applied to calculate the total energy loss as (8) and since , (8) becomes (9) By comparing (9) with (8), the total applied field is determined as (10) where the directional parameter is controlled by the magnetic flux density, whether it is increasing or decreasing.…”

Section: Hybrid Techniquementioning

confidence: 99%

Comparison of Models for Estimating Magnetic Core Losses in Electrical Machines Using the Finite-Element Method

Dlala

2009

IEEE Trans. Magn.

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This paper focuses on the modeling and prediction of core losses in nonoriented magnetic materials of electrical machines. The aim is to investigate the accuracy, efficiency, and stability of certain models, including the commonly used and the advanced ones, and to discuss their advantages and disadvantages when they are implemented in the finite-element method (FEM). It is shown in the paper that the traditional technique based on the loss separation theory can efficiently produce reasonable results in specific operation conditions but can, on the other hand, over-or underestimate the core losses in other circumstances. The advanced model based on solving the one-dimensional (1-D) Maxwell equations can give accurate results for the prediction of core losses in a lamination strip, but its accuracy, stability, and computational burden are put under scrutiny when it is applied to the prediction of core losses in an electrical machine. A third technique, referred to as the hybrid model, which captures the advantages of the traditional and advanced techniques and merges them into one, has been found to be the best compromise. The principal aim of the hybrid model is to avoid the numerical procedure of the 1-D Maxwell equations while maintaining relatively accurate predictions with a reasonable computational burden. A comparative investigation has been conducted for the three core-loss models that have been incorporated into the 2-D FEM analysis of a 37-kW induction motor on which experiments were carried out for comparisons.

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“…It should be remarked that recently some independent analyses have confirmed the validity of the decomposition of total energy losses into just two components, cf. [ 45 , 46 ]. Taking into account the flexibility offered by this approach, in the present paper, it is chosen for computation purposes.…”

Section: Introductionmentioning

confidence: 99%

The Effects of Sheet Thickness and Excitation Frequency on Hysteresis Loops of Non-Oriented Electrical Steel

Chwastek

2022

Sensors

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The paper focuses on modeling the rate dependence of hysteresis loops in conductive magnetic materials. The concept, which was advanced about fifty years ago by Chua, is discussed. It is shown that the viscous-type equation considered by Zirka and co-workers belongs to the class of Chua-type models. The dynamic effects are described with a simple fractional power law. The value of the exponent in the above-mentioned power law may be assessed on the basis of measurements of coercive field strength at different excitation frequencies. To verify the usefulness of the approach, the measurements of hysteresis loops were carried out at several excitation frequencies under standardized conditions for two grades of non-oriented electrical steel. The modeled curves are in a good correspondence with the measured ones. The considered model uses fewer parameters than approaches based on three-term loss separation schemes.

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Comparison of engineering methods of loss prediction in thin ferromagnetic laminations

Cited by 17 publications

References 11 publications

Fabrication and magnetic properties of Fe–6.5% Si alloys by magnetron sputtering method

Fabrication and magnetic properties of Fe–6.5% Si alloys by magnetron sputtering method

Comparison of Models for Estimating Magnetic Core Losses in Electrical Machines Using the Finite-Element Method

The Effects of Sheet Thickness and Excitation Frequency on Hysteresis Loops of Non-Oriented Electrical Steel

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