Patents by Inventor Ludwig Still

Ludwig Still has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Arrangement for operating consumers in a rail vehicle with electrical energy, selectively from an energy supply network or from a motor-generator combination
    Patent number: 9018792
    Abstract: An arrangement for operating a rail vehicle includes a DC voltage intermediate circuit which is connected to an energy supply network, at least one traction inverter which is connected at its DC voltage side to the DC voltage intermediate circuit and at its AC voltage side which is connected one or more traction motors of the rail vehicle. An auxiliary system inverter is connected at its DC voltage side to the DC voltage intermediate circuit and is connected at its AC voltage side to a primary side of an auxiliary system transformer. Auxiliary systems are connected to a secondary side of the auxiliary system transformer via an auxiliary line. Electrical energy generated by an electrical energy supply unit is transferred via the auxiliary line, the auxiliary system transformer and the auxiliary system inverter into the DC voltage intermediate circuit for operation of the at least one traction motor.
    Type: Grant
    Filed: February 11, 2010
    Date of Patent: April 28, 2015
    Assignee: Bombardier Transportation GmbH
    Inventor: Ludwig Still
  • ARRANGEMENT FOR OPERATING CONSUMERS IN A RAIL VEHICLE WITH ELECTRICAL ENERGY, SELECTIVELY FROM AN ENERGY SUPPLY NETWORK OR FROM A MOTOR-GENERATOR COMBINATION
    Publication number: 20110316333
    Abstract: An arrangement for operating a rail vehicle includes a DC voltage intermediate circuit which is connected to an energy supply network, at least one traction inverter which is connected at its DC voltage side to the DC voltage intermediate circuit and at its AC voltage side which is connected one or more traction motors of the rail vehicle. An auxiliary system inverter is connected at its DC voltage side to the DC voltage intermediate circuit and is connected at its AC voltage side to a primary side of an auxiliary system transformer. Auxiliary systems are connected to a secondary side of the auxiliary system transformer via an auxiliary line. Electrical energy generated by an electrical energy supply unit is transferred via the auxiliary line, the auxiliary system transformer and the auxiliary system inverter into the DC voltage intermediate circuit for operation of the at least one traction motor.
    Type: Application
    Filed: February 11, 2010
    Publication date: December 29, 2011
    Applicant: BOMBARDIER TRANSPORTATION GMBH
    Inventor: Ludwig Still