Fears about the adverse effect on vital signalling circuits of ac components impressed upon the dc traction supply by choppers have sometimes inhibited their introduction. Interference mechanisms are now well understood, and it should be possible to write a specification which satisfies the signal engineer without pushing up the price of equipment on the train excessively. Tests carried out by London Transport confirm that the solution lies in specifying an adequate input filter, together with fail-safe control and monitoring of frequencies generated by the chopper.


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    Title :

    Signal interference effects with chopper controlled traction


    Additional title:

    Signalinterferenz-Effekte bei choppergesteuerten Fahrzeugantrieben


    Contributors:
    Mellitt, B. (author)

    Published in:

    Railway Gazette International ; 135 , 11 ; 999-1003


    Publication date :

    1979


    Size :

    5 Seiten, 7 Quellen


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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