Geometry optimization of magnetic shunts in power transformers based on a particular hybrid finite-element boundary-element model and sensitivity analysis

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 pa...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2005-05, Vol.41 (5), p.1776-1779
Main Authors: Tsili, M.A., Kladas, A.G., Georgilakis, P.S., Souflaris, A.T., Paparigas, D.G.
Format: Article
Language:English
Subjects:
Boundary element method
Bypasses
Cross-disciplinary physics: materials science
rheology
Design optimization
Exact sciences and technology
Finite element method
Finite element methods
finite-element (FEM) boundary-element (BEM) hybrid methods
Geometry
Impedance
Magnetic shielding
Magnetism
Magnetostatics
Materials science
Mathematical analysis
Mathematical models
Optimization
Optimization methods
Other topics in materials science
Physics
Power transformers
Sensitivity analysis
Shunts
Solid modeling
transformers
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Summary: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.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2005.846075