3D calculation and modeling of eddy current losses in a large power transformer

Author

Milagre, A.M. ; Luz, M. V Ferreira da ; Cangane, G.M. ; Komar, A. ; Avelino, P.A.

Author_Institution

ENGBRAS Software e Projetos, São Bernardo do Campo, Brazil

fYear

2012

fDate

2-5 Sept. 2012

Firstpage

2282

Lastpage

2286

Abstract

Elimination of hot spots and reduction of eddy current losses in structural parts is one of the important constituents of transformer design. In this work, the eddy current losses in the clamping frame, transformer tank and electromagnetic shielding are calculated using a 3D finite element method. The clamping frame, transformer tank and electromagnetic shielding are modeled by surface impedance method. The paper analyses the effects of electromagnetic shielding and magnetic shunts on the eddy current loss reduction in the transformer tank.

Keywords

eddy current losses; electric impedance; electromagnetic shielding; finite element analysis; power transformers; 3D finite element method; 3d calculation; 3d modeling; clamping frame; eddy current loss reduction; eddy current losses; eddy current losses reduction; electromagnetic shielding effects; hot spots elimination; large power transformer; magnetic shunts; surface impedance method; transformer design; transformer tank; Eddy currents; Magnetic noise; Magnetic resonance imaging; Magnetic shielding; Power transformers; Surface impedance; Eddy current losses; finite element method; power transformer;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines (ICEM), 2012 XXth International Conference on

Conference_Location

Marseille

Print_ISBN

978-1-4673-0143-5

Electronic_ISBN

978-1-4673-0141-1

Type

conf

DOI

10.1109/ICElMach.2012.6350200

Filename

6350200