The Effect of Sample’s Dimension and Cutting Technology on Magnetization and Specific Iron Losses of FeSi Laminations

Maria Dems, Krzysztof Komeza, Zbigniew Gmyrek and Jacek Szulakowski
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Maria Dems: Institute of Mechatronics and Information Systems, Lodz University of Technology, 90-924 Lodz, Poland
Krzysztof Komeza: Institute of Mechatronics and Information Systems, Lodz University of Technology, 90-924 Lodz, Poland
Zbigniew Gmyrek: Institute of Mechatronics and Information Systems, Lodz University of Technology, 90-924 Lodz, Poland
Jacek Szulakowski: Institute of Mechatronics and Information Systems, Lodz University of Technology, 90-924 Lodz, Poland

Energies, 2022, vol. 15, issue 6, 1-22

Abstract: The process of cutting laminations from which the cores of electric machines are built causes a change in their magnetic properties and losses, which can significantly affect machines’ parameters, mainly losses of power and efficiency. Electric motors are a significant consumer of electricity; therefore, the problem of increasing their efficiency is fundamental from the point of view of environmental impact. The subject of the work is the study of the influence of punching and laser cutting on the magnetization and loss characteristics of sheets, taking into account the phenomenon of magnetic anisotropy. For this purpose, samples cut in different directions were tested. As the direction of the field action in the motor core varies in different parts of the machine and time moments, it was investigated how to obtain average characteristics for different directions of magnetization. Then, a simplified method for determining the characteristics of punched sheets of various widths based on small-width samples and water cut samples is presented. The proposed solutions allow for refinement of the calculations of magnetic circuits with a simplified consideration of the influence of punching.

Keywords: induction motor; efficiency; core losses; additional losses; non-invasive measurements (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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