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Practical Investigations on Cobalt–Iron Laminations for Electrical Machines
Dipartimento Energia, Politecnico di Torino, Italy .
ABB Corporate Research, Sweden .
KTH, School of Electrical Engineering (EES). (Electrical Energy Conversion)ORCID iD: 0000-0002-8990-3745
Dipartimento Energia, Politecnico di Torino, Italy .
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2015 (English)In: IEEE transactions on industry applications, ISSN 0093-9994, E-ISSN 1939-9367, Vol. 51, no 4, p. 2933-2939Article in journal (Refereed) Published
Abstract [en]

The adoption of high-performance soft magnetic material can be considered a possible way to respect the challenging design specifications for aerospace and automotive electrical machines. This paper presents an accurate noninvasive investigation of magnetic and energetic properties of cobalt–iron stator cores. In particular, the focus lies on the annealing processes aimed to maximize the magnetic saturation and the mechanical strength. Three cobalt–iron stator core samples coming from different annealing processes have been analyzed, both from the BH characteristics and losses viewpoints. Stator slot effects on the magnetic measurements have been investigated by finite-element method. A fringing effect correction factor to be applied on the measured BH curves is as well reported. In order to complete the experimental campaign analysis, micrographic analysis of the material structure is presented, as well as the iron losses separation coefficients.

Place, publisher, year, edition, pages
IEEE, 2015. Vol. 51, no 4, p. 2933-2939
Keywords [en]
BH characteristic, cobalt–iron laminations, electric machines, finite-element method (FEM), iron losses, magnetic material, micrographic structure, punching process, stator cores.
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Electrical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-172103DOI: 10.1109/TIA.2015.2394404ISI: 000358255700024Scopus ID: 2-s2.0-84937939405OAI: oai:DiVA.org:kth-172103DiVA, id: diva2:845695
Note

QC 20150814

Available from: 2015-08-12 Created: 2015-08-12 Last updated: 2017-12-04Bibliographically approved

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Soulard, Juliette

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