Title :
Analysis of impedance matrix in transformer windings through the Finite Element Method (FEM)
Author :
Alvarez, David L. ; Rosero, Javier A. ; Mombello, Enrique E.
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. Nac. de Colombia, Bogota, Colombia
Abstract :
This paper analyzes the impedance matrix of an equivalent circuit used to model frequency response in different sections of transformer windings. The studies of the matrix are made changing the properties of the core and calculating the eigenvalues and determinants for each one. Finally the influence of axial displacements in the frequency response are analyzed with the support of the Finite Element Method FEM. This work describes the circuit used to model windings for analyst frequency response, to model the influence of core is used FEM for describing the behavior of impedance in function of the frequency.
Keywords :
eigenvalues and eigenfunctions; equivalent circuits; finite element analysis; frequency response; transformer windings; FEM; axial displacements; determinants; eigenvalues; equivalent circuit; finite element method; frequency response; impedance matrix; transformer windings; Impedance; Integrated circuit modeling; Mathematical model; Permeability; Transformer cores; Windings; Complex Permeability; Finite Elements Method FEM; Frequency Response Analysis FRA; Similar Matrices; Transformer Windings;
Conference_Titel :
Transmission & Distribution Conference and Exposition - Latin America (PES T&D-LA), 2014 IEEE PES
Conference_Location :
Medellin
Print_ISBN :
978-1-4799-6250-1
DOI :
10.1109/TDC-LA.2014.6955273
