Design of a new structure for hybrid filters to eliminate harmonics of 25 kV AC electric railways

Author

Yousefi, Sasan ; Zaboli, Aydin ; Hosseini-Biyouki, Mohammad Mahdi ; Askarian-Abyaneh, Hossein ; Hosseinian, Seyyed Hossein

Author_Institution

Electr. Eng. Dept., Amirkabir Univ. of Technol. (Tehran Polytech.), Tehran, Iran

fYear

2015

fDate

14-15 Jan. 2015

Firstpage

59

Lastpage

63

Abstract

In electric railways, thyristor rectifiers are used in order to control the speed. As a consequence in addition to substantial input lead current, an enormous amount of harmonics is injected into the grid. To avoid such harmonics as well as reactive power compensation, reactive power hybrid filters consisting of active and passive filters are utilized. Hybrid filters have several different structures. Since electric railway has a non-linear and variable nature, a novel hybrid filter structure is designed that compensates reactive power and eliminates harmonics to attain desired harmonic level regarding the conventional allowable harmonics level standards. The designed filter model is simulated in MATLAB/SIMULINK and then applied to a harmonic model of an electric railway.

Keywords

active filters; electric vehicles; passive filters; power filters; power grids; power system harmonics; railway electrification; reactive power; rectifiers; thyristors; AC electric railways; MATLAB; SIMULINK; active filters; grid; harmonic model; harmonics; passive filters; reactive power compensation; reactive power hybrid filters; thyristor rectifiers; voltage 25 kV; Harmonic analysis; Lead; Power harmonic filters; Rail transportation; Rails; Silicon; Software packages; Non-linear loads; harmonics elimination; hybrid filters; reactive power compensation;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Systems Protection and Control Conference (PSPC), 2015 9th

Conference_Location

Tehran

Type

conf

DOI

10.1109/PSPC.2015.7094930

Filename

7094930