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

Volume

43

Issue

6

fYear

2007

fDate

6/1/2007 12:00:00 AM

Firstpage

2657

Lastpage

2659

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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2007.893772

Filename

4202882