Naslov
Some Aspects of Stray Losses in Large Power Trasnformers

Autori
Valković, Zvonimir

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the 3^rd Japanese-Bulgarian-Macedonian Joint Seminar on Applied Electromagnetics / Yamashita, A. ; Marinova, I. ; Cingoski, V. - , 2000, 238-243

Skup
3^rd Japanese-Bulgarian-Macedonian Joint Seminar on Applied Electromagnetics

Mjesto i datum
Ohrid, Sjeverna Makedonija, 15.09.2000. - 17.09.2000

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
transformer; stray losses; high currents

Sažetak
The paper presents some results of the investigation of stray losses in power transformers that are caused by high-current loops. The investigation was focused on: a) additional losses in tank cover around high-current bushings and the way of their reduction, b) extra leakage flux and additional losses due to high-current delta-connections. The insertion of nonmagnetic gaps between the phase bushings reduces the extra cover losses more than three times. A nonmagnetic plate around the high-current bushings reduces these extra losses practically to zero. The extra losses due to the high-current delta-connections could be significant for the transformer loss level. These extra losses could be controlled (reduced) by the design layout of the delta-connections.

Izvorni jezik
Engleski

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