With the objective of gaining a complete understanding of conductive interference (CI) in rapid-transit signalling systems, many aspects of the problem have been investigated. This effort has formed part of the Department of Transportation's Urban Mass Transit Administration (UMTA) rail transit EMI/EMC program and has been conducted in coordination with the UMTA-sponsored Rail Transit EMI Technical Working Group. Topics studied have included dc current-dependent ac impedance of third rail and running rail; circuit properties of the running-rail third-rail circuit from train to substation; statistical signal properties and circuit properties of the multicar train as a source of audio-frequency chopper interference; the coupling of CI currents from rails to track circuit receivers; and field measurements of multicar CI. The result of this program is a complete model of CI that relates CI characteristics of single isolated cars to those of an actual system with multicar trains. Implications of the model for system design are discussed.


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    Title :

    The model of conductive interference in rapid transit signaling systems


    Additional title:

    Das Modell der galvanischen Stoerung in schnellen Uebergangssignalsystemen


    Contributors:

    Published in:

    Publication date :

    1986


    Size :

    7 Seiten, 13 Bilder, 1 Tabelle, 12 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English