Core Loss Prediction in Large Hydropower Generators: Influence of Rotational Fields
2009 (English)In: IEEE transactions on magnetics, ISSN 0018-9464, E-ISSN 1941-0069, Vol. 45, no 8, 3200-3206 p.Article in journal (Refereed) Published
In this paper, we discuss the accuracy of several core loss models as compared to experimental data obtained from measurements on commercial hydropower generators. Our aim in this paper is twofold. First, we emphasize the problem of total core loss prediction by comparing the core loss figures obtained by different loss prediction schemes with measured no-load losses. Second, we examine the predicted net effect of bidirectional flux, i.e., the rotational loss. We show that the average degree of rotation in the stator core, and hence the rotational loss, is closely related to the stator slot geometry.
Place, publisher, year, edition, pages
USA: IEEE , 2009. Vol. 45, no 8, 3200-3206 p.
Hydropower generators, iron losses, loss separation, rotational losses, synchronous machines
Engineering and Technology
IdentifiersURN: urn:nbn:se:uu:diva-113155DOI: 10.1109/TMAG.2009.2019115ISI: 000268282500019ISBN: 0018-9464OAI: oai:DiVA.org:uu-113155DiVA: diva2:289869
10792786 hydropower generators core loss prediction rotational fields predicted net effect bidirectional flux rotational loss stator core stator slot geometry2010-01-252010-01-252016-04-14Bibliographically approved