Title :
A Free Vibration Analysis of Helical Windings of Power Transformer by Pseudospectral Method
Author :
Shin, Pan Seok ; Lee, Jinhee ; Jung Woo Ha
Author_Institution :
Dept. of Electr. Eng., Hongik Univ., Chungnam
fDate :
6/1/2007 12:00:00 AM
Abstract :
This paper proposes a new use of the pseudospectral method to the eigenvalue analysis of the power transformer winding. The analysis method is based on the Chebyshev polynomials and collocated at the Gauss-Labatto collocation points. To verify the method, a helical-type winding of a power transformer is analyzed and numerical examples are provided for various boundary conditions. The computed results are in good agreement with finite-element method solutions. It shows that the method is straightforward and it has novel advantages in its conceptual simplicity
Keywords :
Chebyshev approximation; eigenvalues and eigenfunctions; finite element analysis; power transformers; transformer windings; vibrations; Chebyshev polynomials; Gauss-Labatto collocation points; eigenvalue analysis; finite element method; power transformer helical windings; pseudospectral method; vibration analysis; Boundary conditions; Chebyshev approximation; Eigenvalues and eigenfunctions; Electric breakdown; Finite element methods; Gaussian processes; Polynomials; Power transformers; Vibrations; Windings; Eigenvalue analysis; free vibration helical-type winding; pseudospectral method; transformer windings;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2007.893772