Title :
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
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;
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
DOI :
10.1109/ICElMach.2012.6350200
