Iron-loss model for arbitrary magnetization loci in NO electrical steel

2019 ◽  
Vol 61 ◽  
pp. S89-S96
Author(s):  
Benedikt Schauerte ◽  
Simon Steentjes ◽  
Andreas Thul ◽  
Kay Hameyer
Keyword(s):  
Electrical Steel ◽  
Iron Loss ◽  
Loss Model ◽  
Arbitrary Magnetization

Adaptation and parametrization of an iron loss model for rotating magnetization loci in NO electrical steel

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Benedikt Schauerte ◽  
Martin Marco Nell ◽  
Tim Brimmers ◽  
Nora Leuning ◽  
Kay Hameyer
Keyword(s):  
Magnetic Flux ◽  
Flux Density ◽  
Electrical Steel ◽  
Electrical Machines ◽  
Iron Loss ◽  
Magnetic Flux Density ◽  
Loss Model ◽  
Content Type ◽  
One Dimensional ◽  
Iron Losses

Purpose The magnetic characterization of electrical steel is typically examined by measurements under the condition of unidirectional sinusoidal flux density at different magnetization frequencies. A variety of iron loss models were developed and parametrized for these standardized unidirectional iron loss measurements. In the magnetic cross section of rotating electrical machines, the spatial magnetic flux density loci and with them the resulting iron losses vary significantly from these unidirectional cases. For a better recreation of the measured behavior extended iron loss models that consider the effects of rotational magnetization have to be developed and compared to the measured material behavior. The aim of this study is the adaptation, parametrization and validation of an iron loss model considering the spatial flux density loci is presented and validated with measurements of circular and elliptical magnetizations. Design/methodology/approach The proposed iron loss model allows the calculation and separation of the different iron loss components based on the measured iron loss for different spatial magnetization loci. The separation is performed in analogy to the conventional iron loss calculation approach designed for the recreation of the iron losses measured under unidirectional, one-dimensional measurements. The phenomenological behavior for rotating magnetization loci is considered by the formulation of the different iron loss components as a function of the maximum magnetic flux density Bm, axis ratio fAx, angle to the rolling direction (RD) θ and magnetization frequency f. Findings The proposed formulation for the calculation of rotating iron loss is able to recreate the complicated interdependencies between the different iron loss components and the respective spatial magnetic flux loci. The model can be easily implemented in the finite element analysis of rotating electrical machines, leading to good agreement between the theoretically expected behavior and the actual output of the iron loss calculation at different geometric locations in the magnetic cross section of rotating electrical machines. Originality/value Based on conventional one-dimensional iron loss separation approaches and previously performed extensions for rotational magnetization, the terms for the consideration of vectorial unidirectional, elliptical and circular flux density loci are adjusted and compared to the performed rotational measurement. The presented approach for the mathematical formulation of the iron loss model also allows the parametrization of the different iron loss components by unidirectional measurements performed in different directions to the RD on conventional one-dimensional measurement topologies such as the Epstein frames and single sheet testers.

Measuring Iron Loss of the Electrical Steel Sheets with Different Grades under Compressive Stress Normal to the Surface

2019 ◽  
Vol 139 (4) ◽  
pp. 190-196
Author(s):  
Shinya Urata ◽  
Yoshitaka Maeda ◽  
Hideo Nakai ◽  
Yuuya Takeuchi ◽  
Kyyoul Yun ◽  
...  
Keyword(s):  
Compressive Stress ◽  
Electrical Steel ◽  
Iron Loss ◽  
Steel Sheets ◽  
Electrical Steel Sheets

A Comparative Study of the Effect of Different Converter Topologies on the Iron Loss of Nonoriented Electrical Steel

2014 ◽  
Vol 50 (11) ◽  
pp. 1-4 ◽  
Author(s):  
Aboubakr Salem ◽  
Ahmed Abou-Elyazied Abdallh ◽  
Frederik De Belie ◽  
Luc Dupre ◽  
Jan Melkebeek
Keyword(s):  
Comparative Study ◽  
Electrical Steel ◽  
Iron Loss ◽  
Converter Topologies

Effects of Different Alloy Composition on Magnetic Properties of Non-Oriented Electrical Steel

2013 ◽  
Vol 423-426 ◽  
pp. 286-289 ◽  
Author(s):  
Chang Gui Pei ◽  
Pei Kang Bai ◽  
Zhang Xia Guo
Keyword(s):  
Grain Size ◽  
Magnetic Properties ◽  
Hot Rolling ◽  
Magnetic Induction ◽  
Electrical Steel ◽  
Alloy Composition ◽  
Iron Loss ◽  
Steel Alloy ◽  
Effect Of Hot Rolling

Different alloy composition has a significant effect on the magnetic properties of non-oriented electrical steel . Alloy composition effected recrystallization of product through the effect of hot rolling plate grain size, then effected magnetic properties. Supposing everything other component and process remain equal, the iron loss significantly decreased and magnetic induction deterioration was not obvious with the increase of Manganese element and the grain size increases.

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