Title :
Geometry optimization of magnetic shunts in power transformers based on a particular hybrid finite-element boundary-element model and sensitivity analysis
Author :
Tsili, Marina A. ; Kladas, Antonios G. ; Georgilakis, Pavlos S. ; Souflaris, Athanassios T. ; Paparigas, Dimitris G.
Author_Institution :
Fac. of Electr. & Comput. Eng., Nat. Tech. Univ. of Athens, Greece
fDate :
5/1/2005 12:00:00 AM
Abstract :
In this paper, the influence of magnetic shunt geometry on the transformer leakage field and short-circuit impedance is examined. The magnetic-field computation is conducted with the use of a particular hybrid finite-element method (FEM) boundary-element method (BEM) formulation, facilitating the parametric investigation of magnetic shunt effects through application of appropriate boundary conditions. A design sensitivity analysis for the optimization of the shunt geometry ensuring a desired change in short-circuit impedance and shunt losses has also been developed, in conjunction with the magnetic-field model.
Keywords :
boundary-elements methods; computational electromagnetics; finite element analysis; magnetic fields; magnetic leakage; optimisation; power transformers; sensitivity analysis; boundary conditions; boundary-element method; design optimization; design sensitivity analysis; finite-element method; hybrid finite-element boundary-element model; magnetic shunt effects; magnetic shunt geometry; magnetic-field computation; magnetic-field model; power transformers; short-circuit impedance; shunt geometry optimization; shunt losses; transformer leakage field; Design optimization; Finite element methods; Geometry; Impedance; Magnetic shielding; Magnetostatics; Optimization methods; Power transformers; Sensitivity analysis; Solid modeling; Design optimization; finite-element (FEM) boundary-element (BEM) hybrid methods; sensitivity analysis; transformers;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2005.846075
