Patents by Inventor Gernot Herbst

Gernot Herbst 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).

  • Grid impedence estimation for power converter controller
    Patent number: 11901730
    Abstract: A system and method for estimation of grid impedance in a power converter controller is disclosed in which a current controller is provided to inject an injection current while operating online and coupled to a power grid at a point of common coupling (PCC), the injection current being benign to an operating current of the power converter. A voltage controller is provided to regulate input voltage of the power converter. An impedance module is provided to determine parameters for the injection current, including injection interval and duration, current magnitude, current frequency, and symmetrical components. The impedance module may extract measurements of current and voltage at the PCC at an operating point shifted from a previous operating point in response to the injection current. The impedance module may extract symmetrical components of current and voltage measurements, and compute estimated grid impedance based on the extracted symmetrical components.
    Type: Grant
    Filed: August 20, 2018
    Date of Patent: February 13, 2024
    Assignee: Siemens Aktiengesellschaft
    Inventors: Gernot Herbst, Daniel Kloeser, Xiaofan Wu, Ulrich Muenz
  • GRID IMPEDENCE ESTIMATION FOR POWER CONVERTER CONTROLLER
    Publication number: 20210313833
    Abstract: A system and method for estimation of grid impedance in a power converter controller is disclosed in which a current controller is provided to inject an injection current while operating online and coupled to a power grid at a point of common coupling (PCC), the injection current being benign to an operating current of the power converter. A voltage controller is provided to regulate input voltage of the power converter. An impedance module is provided to determine parameters for the injection current, including injection interval and duration, current magnitude, current frequency, and symmetrical components. The impedance module may extract measurements of current and voltage at the PCC at an operating point shifted from a previous operating point in response to the injection current. The impedance module may extract symmetrical components of current and voltage measurements, and compute estimated grid impedance based on the extracted symmetrical components.
    Type: Application
    Filed: August 20, 2018
    Publication date: October 7, 2021
    Inventors: Gernot Herbst, Daniel Kloeser, Xiaofan Wu, Ulrich Muenz
  • Fiber blend
    Patent number: 5560990
    Abstract: The disclosure is directed to fiber blends of melamine resin fibers and aramid fibers.
    Type: Grant
    Filed: May 12, 1995
    Date of Patent: October 1, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Otto Ilg, Dominick A. Burlone, William Theuer, Heinz Berbner, Gernot Herbst, Karl Ott, Hans D. Zettler
  • Electrical insulating paper
    Patent number: 5478640
    Abstract: A thermally stable electrical insulating material comprises melamine resin fibers and a polymer fibril binder with or without a synthetic resin powder and mineral fillers.
    Type: Grant
    Filed: May 2, 1994
    Date of Patent: December 26, 1995
    Assignee: BASF Aktiengesellschaft
    Inventors: Heinz Berbner, Gernot Herbst, Karl Ott, Hans D. Zettler