Nowadays, in several European Railway networks, the old DC supply systems are severely limited by line‐voltage drops. In some sectors, it is not possible to increase traffic or to operate locomotives at their nominal ratings. To increase the capacity of a DC supply system, without additional substations, the authors propose a new three‐wire supply system which restores the overhead line voltage with multilevel DC choppers operating as voltage boosters. Circuits using a third wire with a negative or a positive polarity are considered and compared. Case studies are presented for the French and Italian rail networks. Finally, experimental results performed on a test platform of the French railways, are presented in the case of a double 1.5 kV supply system.


    Access

    Download


    Export, share and cite



    New three-wire supply systems for DC electric railways

    Ladoux, Philippe / Blaquiere, Jean Marc / Caron, Herve et al. | IET | 2015

    Free access

    Full SiC multilevel chopper for three-wire supply systems in DC electric railways

    Fabre, Joseph / Ladoux, Philippe / Solano, Eduard et al. | IEEE | 2016


    Supplementary wire for electric railways

    Wipakoop, H.S. | Engineering Index Backfile | 1895


    The three-wire system for street railways

    Sieber, K. | Engineering Index Backfile | 1921


    New developments in contact wire lubrication for electric railways

    Hug, A.M. | Engineering Index Backfile | 1952