Naslov
Appropriate Modelling of Transformer High Current Leads in 3D FEM

Autori
Petrović, Karlo ; Jurišić, Bruno ; Župan, Tomislav

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

Izvornik
Proceedings of the 5th International Colloquium Transformer Research and Asset Management / - Opatija : Hrvatski komitet međunarodne konferencije za velike električne sisteme (CIGRE), 2019, 1-8

Skup
5th International Colloquium on Transformer Research and Asset Management

Mjesto i datum
Opatija, Hrvatska, 09.10.2019. - 12.10.2019

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
leads, high current windings, stray losses, 3D FEM

Sažetak
In generator step-up power transformer units (GSU), low voltage windings carry sufficiently high currents which generate high magnetic field levels. Therefore, when it comes to 3D finite element method (FEM) calculation of the stray losses of such transformer units, it is not enough to model low voltage windings just as two cylinders. Low voltage leads should also be modelled, and it is necessary to know how to accurately model and connect leads to the windings. Modelling windings and leads in 3D FEM is very demanding and calculation is time- consuming, so an appropriate model of leads can therefore reduce the mesh size and solver time. In this paper, multiple modelling approaches are tested and compared with the model without leads.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

POVEZANOST RADA