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.
The model of conductive interference in rapid transit signaling systems
Das Modell der galvanischen Stoerung in schnellen Uebergangssignalsystemen
IEEE Transactions on Industry Applications ; 22 , 4 ; 756-762
1986
7 Seiten, 13 Bilder, 1 Tabelle, 12 Quellen
Aufsatz (Zeitschrift)
Englisch
The model of conductive interference in rapid transit signaling systems
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