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Poynting Vector Analysis of Synchronous Generators Using Field Simulations
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity. (Elektricitetslära)
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity. (Elektricitetslära)
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity. (Elektricitetslära)
2007 (English)In: IEEE transactions on magnetics, ISSN 0018-9464, E-ISSN 1941-0069, Vol. 43, no 9, 3601-3606 p.Article in journal (Refereed) Published
Abstract [en]

The Poynting vector has been used to gain an understanding of energy flow in rotating electrical machines. Previous studies of energy flow in rotating electrical machines have used the Poynting vector in crude formulas to obtain a qualitative picture. In this paper, we present a study based on numerically calculated fields and quantities entering the Poynting vector. We obtained a detailed understanding of how energy flows in the air gap and into the winding of a synchronous generator. In particular, we found that, at no-load, energy is flowing both to and from the stator as a result of cogging, while for normal load cases the energy flow is unidirectional.

Place, publisher, year, edition, pages
2007. Vol. 43, no 9, 3601-3606 p.
Keyword [en]
Energy flow, Poynting vector, finite-element method, high-voltage generators, synchronous generators
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:uu:diva-14005DOI: 10.1109/TMAG.2007.893166ISI: 000249105800008OAI: oai:DiVA.org:uu-14005DiVA: diva2:41775
Available from: 2008-04-25 Created: 2008-04-25 Last updated: 2017-12-11Bibliographically approved

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Lundin, UrbanLeijon, Mats

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