Title :
Stray Losses Computation in Power Transformer
Author :
Susnjic, L. ; Haznadar, Z. ; Valkovic, Z.
Author_Institution :
Faculty of Eng., Rijeka
Abstract :
Stray losses of three-phase power transformer are predicted using 3D-FEM. The computation is made under harmonic steady state load condition treating the transformer core magnetizing characteristic as non-linear. Various kinds of methods for estimating stray losses due to leakage magnetic field are discussed. In this paper, the eddy current losses in the clamp plates and unshielded transformer tank are obtained modeling them by non-linear surface impedance method. Some results of calculation and measurement are shown
Keywords :
eddy current losses; finite element analysis; magnetic leakage; power transformers; surface impedance; transformer cores; 3D-FEM; clamp plates; eddy current losses; harmonic steady state load conditions; leakage magnetic field; nonlinear surface impedance method; stray loss estimation; stray losses computation; three-phase power transformer; transformer core magnetizing characteristic; unshielded transformer tank; Clamps; Coils; Eddy currents; Finite element methods; Magnetic field measurement; Power engineering and energy; Power engineering computing; Power transformers; Surface impedance; Surface treatment;
Conference_Titel :
Electromagnetic Field Computation, 2006 12th Biennial IEEE Conference on
Conference_Location :
Miami, FL
Print_ISBN :
1-4244-0320-0
DOI :
10.1109/CEFC-06.2006.1633280
