Patents Assigned to Alstom SA
  • Medium frequency energy supply for rail vehicles
    Patent number: 7102901
    Abstract: Disclosed is an electronic circuit for the bidirectional conversion of a high input voltage to a direct-current output voltage with indirect coupling, more specifically such a circuit for use in a power supply system for rail vehicles, that is provided with a primary converter, one single common transformer and a secondary converter. The primary converter includes at least three primary converter sections connected in series, the output lines of which are each connected to a respective one of the transformer primary windings.
    Type: Grant
    Filed: January 28, 2002
    Date of Patent: September 5, 2006
    Assignee: Alstom SA
    Inventors: Andreas Falk, Mathias Victor, Guido Bachmann