On-line measurements of input impedance of an electric traction vehicle supplied by DC catenary for identification and reduction of disturbances in signalling and control track circuits

Marcin Steczek, Adam Szelag

Abstract

The use of power electronics in modern drive systems that are used for traction purposes, makes it necessary to conduct EMC control regarding disturbances in operation of other devices of railway infrastructure that are caused by the vehicles, especially in traffic and signalling management systems. One of the investigated parameters is the value of input impedance of a vehicle. The article presents the results of works on analysis of traction vehicles input impedance as well as impedance measurements under laboratory conditions. The possibility of on-line measurements of impedance in vehicles operating conditions was discussed, the use of these results in a diagnostics system measuring the level of disturbances from higher harmonics introduced by a vehicle into the rail network were also presented. One proposed application of an algorithm enabling introduction of the changes of the manner of control of a vehicle's drive system, while maintaining the required torque that is developed by the vehicle's motors, but at the lowest level of introduced disturbances.

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IMEKO-TC10-2014-024.pdf

DOI

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IMEKO TC

TC10 - Measurement for Diagnostics, Optimization and Control

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