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Multiaxial Magneto-Mechanical Interactions in Electrical Steel Sheets

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.advisor Rasilo, Paavo, Asst. Prof., Tampere University of Technology, Finland
dc.contributor.advisor Martin, Floran, Dr., Aalto University, Department of Electrical Engineering and Automation, Finland
dc.contributor.author Aydin, Ugur
dc.date.accessioned 2018-10-24T09:03:49Z
dc.date.available 2018-10-24T09:03:49Z
dc.date.issued 2018
dc.identifier.isbn 978-952-60-8239-4 (electronic)
dc.identifier.isbn 978-952-60-8238-7 (printed)
dc.identifier.issn 1799-4942 (electronic)
dc.identifier.issn 1799-4934 (printed)
dc.identifier.issn 1799-4934 (ISSN-L)
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/34445
dc.description.abstract This thesis studies multiaxial magneto-mechanical interactions in electrical steel sheets with particular attention to non-oriented electrical steel sheets. Commonly, during the magneto-elastic analysis of electromagnetic applications only uniaxial stress models are used where the effect of multiaxial stress is often neglected. A new rotational single sheet tester (RSST) that is capable of applying arbitrary in-plane magneto-mechanical loading to steel sheets is designed and manufactured. Experiments on a non-oriented electrical steel sheet are performed for analyzing the effect of multiaxial stress on magnetic properties and iron losses in the material. Performed experiments reveal that the effect of multiaxial stress on magnetic properties and iron losses can be much more significant than that of uniaxial stress. A simplified multiscale (SM) and a macroscopic Helmholtz energy based (HE) model are used to model the multiaxial magneto-mechanical behavior of non-oriented electrical steel sheets and their prediction capabilities are compared when limited measurement data is available for identification. The models were studied for modeling both anhysteretic and hysteretic behavior of three different materials that were characterized by different measurement setups. Comparison of the modeling results to the measured results shows that the SM model is accurate for certain cases, whereas the HE model is successful for all three materials.  In order to predict the effect of multiaxial stress on hysteresis and excess losses, a stress dependent iron loss model is developed utilizing statistical loss theory. The model is verified with measurements obtained from the manufactured RSST. For validation purposes, both the HE model and the developed loss model is implemented to a 2D finite element model of a transformer that is under mechanical stress. The applicability of the models is proven by comparing the modeling results to the measurements. It is concluded that if mechanical stresses are present in an application, using conventional methods to calculate the losses can lead to inaccurate results. en
dc.format.extent 106 + app. 52
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Aalto University en
dc.publisher Aalto-yliopisto fi
dc.relation.ispartofseries Aalto University publication series DOCTORAL DISSERTATIONS en
dc.relation.ispartofseries 200/2018
dc.relation.haspart [Publication 1]: Ugur Aydin, Paavo Rasilo, Deepak Singh, Antti Lehikoinen, Anouar Belahcen, Antero Arkkio. Coupled Magneto-Mechanical Analysis of Iron Sheets Under Biaxial Stress. IEEE Transactions on Magnetics, Volume 52, No. 3, pp. 1-4, March 2016. DOI: 10.1109/TMAG.2015.2496207
dc.relation.haspart [Publication 2]: Ugur Aydin, Floran Martin, Paavo Rasilo, Anouar Belahcen, Ari Haavisto, Deepak Singh, Laurent Daniel, Antero Arkkio. Rotational Single Sheet Tester Device for Multiaxial Magneto-Mechanical Effects in Steel Sheets. IEEE Transactions on Magnetics, Submitted for publication, 9 pages, December 2017
dc.relation.haspart [Publication 3]: Ugur Aydin, Paavo Rasilo, Floran Martin, Anouar Belahcen, Laurent Daniel, Ari Haavisto, Antero Arkkio. Effect of Multi-axial Stress on Iron Losses of Electrical Steel Sheets. Journal of Magnetism and Magnetic Materials, vol. 469, pp. 19-27, January 2019. DOI: 10.1016/j.jmmm.2018.08.003
dc.relation.haspart [Publication 4]: Ugur Aydin, Paavo Rasilo, Floran Martin, Deepak Singh, Laurent Daniel, Anouar Belahcen, Mahmoud Rekik, Olivier Hubert, Reijo Kouhia, Antero Arkkio. Magneto-mechanical Modeling of Electrical Steel Sheets. Journal of Magnetism and Magnetic Materials, Volume 439, pp. 82-90, October 2017.DOI: 10.1016/j.jmmm.2017.05.008
dc.relation.haspart [Publication 5]: Ugur Aydin, Paavo Rasilo, Floran Martin, Deepak Singh, Laurent Daniel, Anouar Belahcen and Antero Arkkio. Modeling the Effect of Multiaxial Stress on Magnetic Hysteresis of Electrical Steel Sheets: A Comparison. IEEE Transactions on Magnetics, Volume 53, No. 6, pp. 1-4, June 2017. DOI: 10.1109/TMAG.2017.2658676
dc.subject.other Electrical engineering en
dc.title Multiaxial Magneto-Mechanical Interactions in Electrical Steel Sheets en
dc.type G5 Artikkeliväitöskirja fi
dc.contributor.school Sähkötekniikan korkeakoulu fi
dc.contributor.school School of Electrical Engineering en
dc.contributor.department Sähkötekniikan ja automaation laitos fi
dc.contributor.department Department of Electrical Engineering and Automation en
dc.subject.keyword electrical steel sheets en
dc.subject.keyword finite element analysis en
dc.subject.keyword iron losses en
dc.subject.keyword magneto-mechanical effects en
dc.identifier.urn URN:ISBN:978-952-60-8239-4
dc.type.dcmitype text en
dc.type.ontasot Doctoral dissertation (article-based) en
dc.type.ontasot Väitöskirja (artikkeli) fi
dc.contributor.supervisor Belahcen, Anouar, Prof., Aalto University, Department of Electrical Engineering and Automation, Finland
dc.opn Knight, Andrew M., Prof., University of Calgary, Canada
dc.contributor.lab Electromechanics en
dc.rev Mininger, Xavier, Prof., Université Paris-Sud, France
dc.rev Lecointe, Jean-Philippe, Prof., Université d’Artois, France
dc.rev Yamazaki, Katsumi, Prof., Chiba Institute of Technology, Japan
dc.date.defence 2018-11-23
local.aalto.acrisexportstatus checked
local.aalto.formfolder 2018_10_24_klo_10_26
local.aalto.archive yes


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