Logotyp: till Uppsala universitets webbplats

uu.sePublikationer från Uppsala universitet
EnglishSvenskaNorsk
Ändra sökning
ExporteraLänk till posten
Permanent länk

Direktlänk
BETA

Projekt

Projekttyp/Bidragsform
Projektbidrag
Titel [sv]
Modellering av nya olinjära permanentmagnetiska material för energitillämpningar
Titel [en]
Modelling novel nonlinear permanent magnet materials for energy applications
Abstract [en]
There are several ongoing research projects with the aim to find novel, rare earth metal free permanent magnets to substitute the commonly used neodymium-iron-boron magnets. To facilitate this research and evaluate possible magnet candidates there is a need for nonlinear material models to model magnets in electrical machines. The neodymium-iron-boron magnets can be modelled with linear models whereas preliminary results indicate novel materials to have nonlinear magnetic properties. This research project aims at developing a computationally efficient method for modelling nonlinear materials for use in existing finite element method based simulation tools for electrical machines connected to an electrical circuit. The method will be experimentally verified. Ones the method is verified it will be used to investigate the stability of nonlinear magnets when used in electrical machines with the goal to determine how nonlinear a material can be to be considered a candidate as a permanent magnet for electrical machines. Previous results indicate that the stability of a material’s magnetic properties might not be as important for large slow-rotating wind power generators as for high-speed electrical motors, so the materials will be evaluated for different applications. The research will be performed by a PhD student and the main applicant during four years. An overall goal with this project is to contribute to a more sustainable society.
Publikationer (2 of 2) Visa alla publikationer
Ibrayeva, A., Lind, E., Silva, M. D., Ghorai, S. & Eriksson, S. (2023). Measurement and Modelling of Hysteresis Curves for Nonlinear Permanent Magnets at Different Inclination Angles. In: 2023 IEEE International Magnetic Conference (INTERMAG): . Paper presented at IEEE International Magnetic Conference (INTERMAG), May 15-19, 2023, Sendai, Japan. Institute of Electrical and Electronics Engineers (IEEE)
Öppna denna publikation i ny flik eller fönster >>Measurement and Modelling of Hysteresis Curves for Nonlinear Permanent Magnets at Different Inclination Angles
Visa övriga...
2023 (Engelska)Ingår i: 2023 IEEE International Magnetic Conference (INTERMAG), Institute of Electrical and Electronics Engineers (IEEE), 2023Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

This paper presents the measurement results of the BH/MH curves of the Alnico 8 (LNGT40) with recoil loops and a mathematical model for the calculation of the average magnetic flux density in a cubic permanent magnet. The measurements were performed with a Vibrating Sample Magnetometer (VSM). The magnet samples have a cubic shape with 3 mm sides. BH curves in preferred (easy) and transverse directions and recoil loops were measured and compared to Alnico 9 (LNGT72) as well as to the data from the supplier. The load line of the cubic magnet in 0 A/m applied magnetic field was found. A mathematical model was developed which can approximate the MH a curve for an applied field with an arbitrarily chosen angle between the field and easy axis, given MH a curves for 0o and 90o. Also, a simplified general model of a cubic permanent magnet in the air and calculation results of stored energy and hysteresis losses were presented.
Ort, förlag, år, upplaga, sidor
Institute of Electrical and Electronics Engineers (IEEE), 2023
Serie
International Conference on Magnetics, ISSN 2150-4598, E-ISSN 2150-4601
Nyckelord
Alnico magnets, BH curve, Demagnetization, Permanent Magnet, Recoil Line
Nationell ämneskategori
Annan fysik Annan elektroteknik och elektronik Den kondenserade materiens fysik
Identifikatorer
urn:nbn:se:uu:diva-520985 (URN)10.1109/INTERMAG50591.2023.10265100 (DOI)001090594700054 ()979-8-3503-3246-9 (ISBN)979-8-3503-3247-6 (ISBN)
Konferens
IEEE International Magnetic Conference (INTERMAG), May 15-19, 2023, Sendai, Japan
Forskningsfinansiär
Vetenskapsrådet, 2018-04617StandUp
Tillgänglig från: 2024-01-18 Skapad: 2024-01-18 Senast uppdaterad: 2024-04-22Bibliografiskt granskad
Westerberg, A., Boggavarapu, S. R. & Eriksson, S.Anisotropic Model of Nonlinear Permanent Magnets in Finite Element Method Software.
Öppna denna publikation i ny flik eller fönster >>Anisotropic Model of Nonlinear Permanent Magnets in Finite Element Method Software
(Engelska)Manuskript (preprint) (Övrigt vetenskapligt)
Nyckelord
Aluminum-nickel-cobalt (Alnico), COMSOL, demagnetization, finite element method (FEM), nonlinear permanent magnets, permanent magnet synchronous generator (PMSG), recoil line
Nationell ämneskategori
Annan elektroteknik och elektronik
Forskningsämne
Teknisk fysik
Identifikatorer
urn:nbn:se:uu:diva-527352 (URN)
Tillgänglig från: 2024-04-29 Skapad: 2024-04-29 Senast uppdaterad: 2024-04-29
ProjektledareEriksson, Sandra
Koordinerande organisation
Uppsala universitet
Forskningsfinansiär
Tidsperiod
2019-01-01 － 2022-12-31
Nationell ämneskategori
Annan elektroteknik och elektronik
Identifikatorer
DiVA, id: project:6153Projekt id: 2018-04617_VR

Sök vidare i DiVA

Annan elektroteknik och elektronik

Sök vidare utanför DiVA

GoogleGoogle Scholar
v. 2.43.0
|
WCAG
|
Uppsala universitetsbibliotek
|
Fråga biblioteket
|
Logga in i DiVA
|
Söka och länka i DiVA