Calculations And Measurements Of Harmonic
Current Distributions In The Catenary Of
Railways With Single-phase A.C.
Author(s)
A. Zynovchenko, J. Xie, S. Jank & F. Klier
Abstract
Frequency converters find wide application in rail vehicles and power supply
stations of railway networks. An important disadvantage of frequency converters
is the emission of voltage and current harmonics. They cause extra stress to
railway equipment and can interfere with sensitive signalling circuits resulting in
their mis-operation. Therefore, propagation of current harmonics in the catenary
network and resonance phenomena have to be investigated, which requires
network calculations for high frequencies. A new catenary network calculation
method covers the frequency range up to 20 kHz. Experimental proof of the
calculation method was done. Comparison of calculations and experimental
results is given.
Keywords: network model, network calculation, catenary, track circuits,
frequency converter, harmonics, electromagnetic compatibility.
1 Introduction
The development of high power semiconductors today results in the increasing
use of frequency converters in railway networks. Nowadays, most rail vehicles
and also some power stations are equipped with frequency converters. Such
converters generate an AC-voltage by building it with pulse shaped voltages
(pulse width modulation). Because of that, the resulting output voltage of the
Keywords
network model, network calculation, catenary, track circuits,
frequency converter, harmonics, electromagnetic compatibility.
Related Book
Other papers in this volume
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