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Low-loss FeSi sheet for energy-efficient electrical drives

1 TU Berg Bergakademie Freiberg, Institute of Metal Forming (IMF), Bernhard-von-Cotta-Straße 4, D-09599 Freiberg, Germany
2 RWTH Aachen University, Institute of Metal Forming (IBF), Intzestraße 10, D-52056 Aachen, Germany
3 RWTH Aachen University, Institute of Physical Metallurgy and Metal Physics (IMM), Kopernikusstraße 14, D-52074 Aachen, Germany
4 TU München, Institute of Metal Forming and Casting (utg), Walther-Meißner-Straße 4, 85748 Garching, Germany
5 RWTH Aachen University, Institute of Electrical Machines (IEM), Schinkelstraße 4, D-52056 Aachen, Germany

Topical Section: Materials Processing

The properties of the lamination of rotating electrical machines made of non-grain oriented electrical steel are the key factor for the efficiency of electric drives. Therefore, low losses and high magnetization over the entire polarization and frequency spectrum are the aim of research activities in the field of NGO steel production and processing. Structural features of the electrical steel like microstructure and texture, lamination thickness, and residual stresses affect the magnetic properties. During the production and processing of non-grain oriented electrical steels, several effects control the microstructure and texture. Moreover, several interdependencies between the parameters of the production and processing steps and the magnetic properties are existing. This paper gives an overview of a joint research project made up of an interdisciplinary team of researcher from the fields of materials engineering, production technology and electrical engineering from five different institutes at three universities. The research focuses and selected results are presented, showing important interactions along the production route of non-grain oriented electrical steels containing 2.4 wt% Si.
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1. Cui S, Jung IH (2017) Critical reassessment of the Fe-Si system. Calphad 56: 108–125.    

2. Schmidtchen M, Kawalla R (2016) Fast numerical simulation of symmetric flat rolling processes for inhomogeneous materials using a layer model-Part I: Basic theory. Steel Res Int 87: 1065–1081.    

3. Stöcker A, Schmidtchen M, Kawalla R (2017) Hot rolling simulation for non-oriented electrical steel. AIP Conf Proc 1896: 190021.

4. Wei X, Hojda S, Dierdorf J, et al. (2016) Crystal plasticity finite element analysis of texture evolution during cold rolling of a non-oriented electrical steel. 10th International Rolling Conference and the 7th European Rolling Conference, 494–504.

5. Wei X, Hojda S, Dierdorf J, et al. (2017) Model for texture evolution in cold rolling of 2.4 wt.-% Si non-oriented electrical steel. AIP Conf Proc 1896: 170005.

6. Roters F, Diehl M (2018) "DAMASK", Max-Planck-Institut für Eisenforschung. Available from: https://damask.mpie.de/Home/WebHome.

7. Mießen C, Liesenjohann M, Barrales-Mora LA, et al. (2015) An advanced level set approach to grain growth-Accounting for grain boundary anisotropy and finite triple junction mobility. Acta Mater 99: 39–48.    

8. IMM Microstructure Generator, 2017. Available from: https://github.com/GraGLeS/IMM_MicrostructureGenerator.

9. GraGLeS2D-Grain Growth Level Set 2dim, 2017. Available from: https://github.com/GraGLeS/GraGLeS2D.

10. Leuning N, Steentjes S, Stöcker A, et al. (2018) Impact of the interaction of material production and mechanical processing on the magnetic properties of non-oriented electrical steel. AIP Adv 8: 047601.    

11. Kestens L, Jacobs S (2008) Texture control during the manufacturing of nonoriented electrical steels. Texture Stress Microstruct 2018: 173083.

12. Weiss H, Leuning N, Steentjes S, et al. (2017) Influence of shear cutting parameters on the electromagnetic properties of non-oriented electrical steel sheets. J Magn Magn Mater 421: 250–259.    

13. Weiss H, Trober P, Golle R, et al. (2017) Loss reduction due to blanking parameter optimization for different non-grain oriented electrical steel grades. IEEE International Electric Machines and Drives Conference (IEMDC).

14. Leuning N, Steentjes S, Schulte M, et al. (2016) Effect of elastic and plastic tensile mechanical loading on the magnetic properties of NGO electrical steel. J Magn Magn Mater 417: 42–48.    

15. Moses AJ (2012) Energy efficient electrical steels: Magnetic performance prediction and optimization. Scripta Mater 67: 560–565.    

16. Steentjes S, Leuning N, Dierdorf J, et al. (2016) Effect of the interdependence of cold rolling strategie and subsequent punching on magnetic properties of NO steel sheets. IEEE T Magn 52: 1–4.

17. Lee K, Park S, Huh M, et al. (2014) Effect of texture and grain size on magnetic flux density and core loss in non-oriented electrical steel containing 3.15% Si. J Magn Magn Mater 354: 324–332.

18. Leuning N, Steentjes S, Hameyer K (2019) Effect of grain size and magnetic texture on iron-loss components in NO electrical steel at different frequencies. J Magn Magn Mater 469: 373–382.    

19. Pfeifer F, Kunz W (1977) Bedeutung von Kornstruktur und Fremdkörpereinschlüssen für die Magnetisierungseigenschaften hochpermeabler Ni-Fe-legierungen. J Magn Magn Mater 4: 214–219.    

20. Bertotti G (1988) General properties of power losses in soft ferromagnetic materials. IEEE T Magn 24: 621–630.    

21. Lordache VE, Hug E, Buiron N (2003) Magnetic behaviour versus tensile deformation mechanisms in a non-oriented Fe–(3 wt.%)Si steel. Mat Sci Eng A-Struct 359: 62–74.

22. Campos M, Teixeira JC, Landgraf F (2006) The optimum grain size for minimizing energy losses in iron. J Magn Magn Mater 301: 94–99.    

23. Barros J, Schneider J, Verbeken K, et al. (2008) On the correlation between microstructure and magnetic losses in electrical steel. J Magn Magn Mater 320: 2490–2493.    

24. Landgraf F, da Silveira J, Rodrigues Jr. D (2011) Determining the effect of grain size and maximum induction upon coercive field of electrical steels. J Magn Magn Mater 323: 2335–2339.    

25. Leuning N, Steentjes S, Hameyer K (2017) Effect of magnetic anisotropy on Villari Effect in non-oriented FeSi electrical steel. Int J Appl Electrom 55: 23–31.

26. Bertotti G (1998) Hysteresis in Magnetism: For Physicists, Materials Scientists, and Engineers, Academic Press, San Diego.

27. Eggers D, Steentjes S, Hameyer K (2012) Advanced iron-loss estimation for nonlinear material behavior. IEEE T Magn 48: 3021–3024.    

28. Steentjes S, Leßmann M, Hameyer K (2013) Semi-physical parameter identification for an iron-loss formula allowing loss-separation. J Appl Phys 113: 17A319.

29. Leuning N, Steentjes S, Hameyer K (2017) On the homogeneity and isotropy of non-grain-oriented electrical steel sheets for the modeling of basic magnetic properties from microstructure and texture. IEEE T Magn 53: 1–5.    

30. Ruf A, Steentjes S, von Pfingsten G, et al. (2016) Requirements on soft magnetic materials for electric traction motors. Proceedings: 7th International Conference on Magnetism and Metallurgy: WMM'16, Rome, Italy.

© 2018 the Author(s), licensee AIMS Press. This is an open access article distributed under the terms of the Creative Commons Attribution Licese (http://creativecommons.org/licenses/by/4.0)

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