Naslov
The 3D magnetic field calculation of a dry-type transformer by integral equations

Autori
Ćućić, Branimir ; Haznadar, Zijad ; Štih, Željko

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

Izvornik
25th Annual Review of Progress in Applied Computational Electromagnetics March 8 - March 12, 2009 - Monterey, California ©2009 ACES / - , 2009

Skup
The 25th Annual Review of Progress in Applied Computational Electromagnetics

Mjesto i datum
Monterey (CA), Sjedinjene Američke Države, 08.03.2009. - 12.03.2009

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
magnetic field; transformer; integral equations

Sažetak
The 3D magnetic field calculation of a dry-type transformer was performed for quasistatic case by using integral equations. Windings and LV terminals are primary sources of the magnetic field. The core of the transformer was modeled using a secondary source K – line current density on the surface of the core. Since the core is laminated, it was assumed to have no eddy currents. All other ferromagnetic parts of the transformer were ignored. The surface of the core was divided into N rectangular elements. The secondary source K was assumed to be constant all over the elementary surface. In order to find K, the system of integral equations was transformed into linear system. The matrix coefficients were evaluated from surface integrals. Given that rectangle was chosen as the elementary surface, integration limits are constant and integrals are soluble analytically. The size of the system matrix is 2N x 2N. We compared our calculations with measurements for magnetic induction.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

POVEZANOST RADA