Influence of the mechanical fatigue progress on the magnetic properties of electrical steel sheets

• Autorzy: Karthaus J. , Steentjes S. , Gröbel D. , Andreas K. , Merklein M. , Hameyer K.

Identyfikatory

DOI

10.1515/aee-2017-0026

• Języki publikacji: EN

Abstrakty

EN

The purpose of this paper is to study the variation of the magnetic properties of non-oriented electrical steel sheets with the fatigue state during cyclic mechanical loading. The obtained results are central to the design of variable drives such as traction drives in electric vehicles in which varying mechanical loads, e.g. in the rotor core (centrifugal forces), alter the magnetic properties. Specimens of non-oriented electrical steel are subject to a cyclically varying mechanical tensile stress with different stress amplitudes and number of cycles. The specimens are characterised magnetically at different fatigue states for different magnetic flux densities and magnetising frequencies. The measurements show a variation in magnetic properties depending on the number of cycles and stress magnitude which can be explained by changes in the material structure due to a beginning mechanical fatigue process. The studied effect is critical for the estimation of the impact of mechanical material fatigue on the operational behaviour of electrical machines. Particularly in electrical machines with a higher speed where the rotor is stressed by high centrifugal forces, material fatigue occurs and can lead to deterioration of the rotor’s stack lamination.

Słowa kluczowe

EN

cyclic mechanical stress; electrical machines; electrical steel sheets; magnetic properties; material fatigue

• Wydawca: Polish Academy of Sciences, Committee on Electrical Engineering
• Czasopismo: Archives of Electrical Engineering
• Rocznik: 2017
• Tom: Vol. 66, nr 2
• Strony: 351--360
• Opis fizyczny: Bibliogr. 17 poz., rys., tab., wz.

Twórcy

autor

Karthaus J.

• RWTH Aachen University, Institute of Electrical Machines, Schinkelstr. 4, 52062 Aachen, Germany

autor

Steentjes S.

• RWTH Aachen University, Institute of Electrical Machines, Schinkelstr. 4, 52062 Aachen, Germany

autor

Gröbel D.

• FAU Erlangen-Nürnberg, Institute of Manufacturing Technology, Egerlandstr. 11-13, 91058 Erlangen, Germany

autor

Andreas K.

• FAU Erlangen-Nürnberg, Institute of Manufacturing Technology, Egerlandstr. 11-13, 91058 Erlangen, Germany

autor

Merklein M.

• FAU Erlangen-Nürnberg, Institute of Manufacturing Technology, Egerlandstr. 11-13, 91058 Erlangen, Germany

autor

Hameyer K.

• RWTH Aachen University, Institute of Electrical Machines, Schinkelstr. 4, 52062 Aachen, Germany

Bibliografia

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).