Patents by Inventor Ludger LUETKEHUES

Ludger LUETKEHUES 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).

  • ELECTRICAL MACHINES AND METHODS TO MITIGATE BEARING CURRENTS
    Publication number: 20230223826
    Abstract: The present disclosure relates to electrical machines (100, 200) configured to be fed by pulse width modulation from a power converter (170) and comprising a stator (110), a rotor (120), a rotor shaft (130) and one or more bearings (140, 141) arranged between the rotor (120) and the stator (110). The electrical machine (100, 200) further comprising an electrical shunt (160, 161) arranged between the rotor shaft (130) and the stator (110). The present disclosure also relates to methods (500) to mitigate electrical discharge machining bearing currents in electrical machines (100, 200).
    Type: Application
    Filed: January 5, 2023
    Publication date: July 13, 2023
    Inventors: Lionel DURANTAY, Kum Kang HUH, Christophe GROSSELIN, Henri BAERD, Ludger LUETKEHUES, Giesbert KRUEGER