Patents by Inventor Frank Unger-Weber

Frank Unger-Weber 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).

  • Method for controlling a power drive system
    Patent number: 6538412
    Abstract: To minimize the energy required for operation of a rail vehicle, in a drive system that has an intermediate circuit converter 1 and a three-phase motor 7 fed by it, the intermediate circuit voltage in the intermediate circuit 12 and/or the magnetic flux in the drive motor 7 are optimized to correspond to the actual operating requirements, including, if necessary, the energy expenditure for the auxiliaries 9 that are provided to cool the components.
    Type: Grant
    Filed: April 12, 2001
    Date of Patent: March 25, 2003
    Assignee: DaimlerChrysler Rail Systems GmbH
    Inventors: Christian Klose, Frank Unger-Weber