Patents by Inventor Christian Bernhard KELLER

Christian Bernhard KELLER 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 the reformation of an electrolytic capacitor in a converter and converter with such
    Patent number: 10498152
    Abstract: A precharging circuit for precharging an intermediate circuit capacitor of a converter formed from at least one electrolytic capacitor using a grid current from a supply grid before the converter is connected to the supply grid and is used for the reformation of at least one electrolytic capacitor of the intermediate circuit capacitor. A method is provided for the reformation of an intermediate circuit capacitor of a converter formed from at least one electrolytic capacitor, which is connected to the supply grid using a precharging circuit. A converter is created for converting an AC grid voltage into a direct voltage or vice versa, with a device for the reformation of electrolytic capacitors of an intermediate circuit capacitor of the converter using an integrated precharging circuit of the converter. Existing hardware can be used for the reformation of electrolytic capacitors in a converter, and the expense associated with the reformation can be minimized.
    Type: Grant
    Filed: September 15, 2017
    Date of Patent: December 3, 2019
    Assignee: GE ENERGY POWER CONVERSION TECHNOLOGY LTD
    Inventors: Thomas Kolbe, Christian Bernhard Keller
  • METHOD FOR THE REFORMATION OF AN ELECTROLYTIC CAPACITOR IN A CONVERTER AND CONVERTER WITH SUCH
    Publication number: 20180076642
    Abstract: A precharging circuit for precharging an intermediate circuit capacitor of a converter formed from at least one electrolytic capacitor using a grid current from a supply grid before the converter is connected to the supply grid and is used for the reformation of at least one electrolytic capacitor of the intermediate circuit capacitor. A method is provided for the reformation of an intermediate circuit capacitor of a converter formed from at least one electrolytic capacitor, which is connected to the supply grid using a precharging circuit. A converter is created for converting an AC grid voltage into a direct voltage or vice versa, with a device for the reformation of electrolytic capacitors of an intermediate circuit capacitor of the converter using an integrated precharging circuit of the converter. Existing hardware can be used for the reformation of electrolytic capacitors in a converter, and the expense associated with the reformation can be minimized.
    Type: Application
    Filed: September 15, 2017
    Publication date: March 15, 2018
    Inventors: Thomas KOLBE, Christian Bernhard KELLER