Traction rectifier sets in rapid transit systems generate characteristic and uncharacteristic harmonics in the contact rail dc voltage and harmonic currents in the contact and running rails. Train control systems which use audio-frequency circulating currents in the running rails are sensitive to the harmonics generated by the rectifier sets. Mitigation of this EMI problem is possible by using tuned filters at the output of the traction rectifiers. The sources of harmonics and the design of filters to attenuate the harmonics are discussed. Two examples are given: 1) a 720/1440-Hz tuned filter for the Bay Area Rapid Transit System (BART); 2) a 1560/5160-Hz tuned filter to attenuate the EMI in the Baltimore Region Rapid Transit System (BRRTS).


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    Title :

    Tuned filters for traction rectifier sets


    Additional title:

    Filtersaetze fuer Gleichrichter in Traktionsantrieben


    Contributors:
    Kusko, A. (author) / Peeran, S.M. (author)

    Published in:

    Publication date :

    1985


    Size :

    9 Seiten, 19 Bilder, 3 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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