Transient approach for iron loss separation of non-grain-oriented electrical steels considering the impact of cut edge effect

• Autorzy: Mülder Christoph , Elfgen Silas , Hameyer Kay

Identyfikatory

DOI

10.24425/aee.2019.128265

• Języki publikacji: EN

Abstrakty

EN

The purpose of this paper is to focus on the loss separation of non-grain-oriented electrical steels used for speed-variable rotating electrical machines. The impact of laser-cutting, used in prototype manufacturing and of flux density harmonics, occurring locally in the lamination, on the loss distribution is studied in detail. Iron losses occurring under operation can physically be separated in different loss components. In this paper, a frequency-based loss model with parameters identified for single-sheet tester specimens, cut in strips of different widths, is therefore used. Moreover, a time-domain approach considers loss distributions occurring from higher harmonics. Hysteresis losses having high sensitivity to cut edge effects are calculated by the well-known Jiles-Atherton model adapting the frequency-based loss parameters. The model is validated by free-curve measurements at a single-sheet tester. It has been shown that the studied elliptical hysteresis model becomes inaccurate particularly for specimens with small strip widths with similar dimensions as teeth of electrical machine laminations. The incorrect mapping of losses occurring from minor hysteresis loops due to higher harmonics is concluded. The results showconsequently that both, the impact of a cut edge effect and local distributions of flux density harmonics need to be considered in terms of accurate iron loss prediction of electrical machine design.

Słowa kluczowe

EN

cut edge effect; hysteresis losses; iron losses; transient loss model

• Wydawca: Polish Academy of Sciences, Committee on Electrical Engineering
• Czasopismo: Archives of Electrical Engineering
• Rocznik: 2019
• Tom: Vol. 68, nr 2
• Strony: 237--244
• Opis fizyczny: Bibliogr. 10 poz., rys., wz.

Twórcy

autor

Mülder Christoph

• RWTH Aachen University, Institute of Electrical Machines, Germany

autor

Elfgen Silas

• RWTH Aachen University, Institute of Electrical Machines, Germany

autor

Hameyer Kay

• RWTH Aachen University, Institute of Electrical Machines, Germany

Bibliografia

• [1] Siebert R., Schneider J., Beyer E., Laser Cutting and Mechanical Cutting of Electrical Steels and its Effect on the Magnetic Properties, IEEE Transactions on Magnetics, vol. 50, no. 4, pp. 1–4 (2014).
• [2] Steentjes S., Leßmann M., Hameyer K., Semi-physical parameter identification for an iron-loss formula allowing loss-separation, Journal of Applied Physics, vol. 113, no. 17 (2013).
• [3] Steentjes S., Eggers D., Leßmann M., Hameyer K., Iron-loss model for the FE-simulation of electrical machines, INDUCTICA TECHNICAL CONFERENCE, CWIEME Berlin, pp. 239–246 (2012).
• [4] Steentjes S., Eggers D., Leßmann M., Hameyer K., Iron-loss model for the FE-simulation of electrical machines, INDUCTICA TECHNICAL CONFERENCE, CWIEME Berlin, pp. 239–246 (2012).
• [5] Lin D., Zhou P., FuW.N., Badics Z., Cendes Z.J., A dynamic core loss model for soft ferromagnetic and power ferrite materials in transient finite element analysis, IEEE Transactions on Magnetics, vol. 40, no. 2, pp. 1318–1321 (2004).
• [6] Hofmann M., Naumoski H., Herr U., Herzog H.G., Magnetic Properties of Electrical Steel Sheets in Respect of Cutting: Micromagnetic Analysis and Macromagnetic Modeling, IEEE Transactions on Magnetics, vol. 52, no. 2, pp. 1–14 (2016).
• [7] Steentjes S., Hameyer K., Dolinar D., Petrun M., Iron-Loss and Magnetic Hysteresis Under Arbitrary Waveforms in NO Electrical Steel Sheets: A Comparative Study of Hysteresis Models, IEEE Transactions on Industrial Electronics, vol. PP, no. 99, p. 1 (2016).
• [8] Kokornaczyk E., Gutowski M.W., Anhysteretic Functions for the Jiles-Atherton Model, IEEE Transactions on Magnetics, vol. 51, no. 2, pp. 1–5 (2015).
• [9] Elfgen S., Steentjes S., Böhmer S., Franck D., Hameyer K., Continuous Local Material Model for Cut Edge Effects in Soft Magnetic Materials, IEEE Transactions on Magnetics, vol. 52, no. 5, pp. 1–4 (2016).
• [10] Zirka S., Moroz Y., Marketos P., Moses A., Evolution of the loss components in ferromagnetic laminations with induction level and frequency, Journal of Magnetism and Magnetic Materials, vol. 320, no. 20, pp. 1039–1043 (2008).

Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).