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Determination of complex permeability of silicon steel for use in high-frequency modeling of power transformers
Chalmers, Div High Voltage Engn, Dept Mfg & Mat Technol, SE-41296 Gothenburg, Sweden..
Warsaw Univ Technol, PL-00611 Warsaw, Poland..ORCID iD: 0000-0002-6262-0286
Chalmers, Div High Voltage Engn, Dept Mfg & Mat Technol, SE-41296 Gothenburg, Sweden.;Natl Acad Sci Ukraine, Inst Electrodynam, Kiev, Ukraine.;ABB High Voltage Technol Ltd, R&D HV Lab, Zurich, Switzerland..
KTH.
2008 (English)In: IEEE transactions on magnetics, ISSN 0018-9464, E-ISSN 1941-0069, Vol. 44, no 4, p. 438-444Article in journal (Refereed) Published
Abstract [en]

Information about frequency dependence of complex permeability of silicon steel is a vital input parameter in calculations of transformer winding inductance used for modeling. high-frequency behavior (100 Hz-1 MHz). We present two ways of determining small signal complex permeability spectra in frequency domain and compare and discuss the results. The first method is based on an optimization procedure, in which inductance of a winding is measured and calculated by analytical formulas and finite-element modeling. The second method makes use of a single sheet tester. We show that the magnitude of effective permeability of the silicon steel laminations remains significant up to about 100 kHz. We also report on the effect of magnetic viscosity on complex permeability.

Place, publisher, year, edition, pages
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC , 2008. Vol. 44, no 4, p. 438-444
Keywords [en]
complex permeability, magnetic viscosity, power transformers, silicon steel, single sheet tester
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-242907DOI: 10.1109/TMAG-2007.914857ISI: 000258183200003Scopus ID: 2-s2.0-41549119100OAI: oai:DiVA.org:kth-242907DiVA, id: diva2:1288242
Note

QC 20190212

Available from: 2019-02-12 Created: 2019-02-12 Last updated: 2019-02-12Bibliographically approved

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Daszczynski, TadeuszGubanski, Stanislaw M.
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