Patents by Inventor Ralph Mario Burkart

Ralph Mario Burkart 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 operating a power electronic converter device with floating cells
    Patent number: 11979094
    Abstract: In one embodiment, a method of operating a power electronic converter device for an electrical power converter system is provided. The power electronic converter device includes a converter circuit, a first converter, and a second converter. The first converter and the second converter are switch with a switching pattern such that the first converter and the second converter generate voltages with stepwise voltages changes and an output voltage of the power electronic converter device results from a superposition of the voltages of the first converter and the second converter. The switching pattern includes switching instants for the second converter such that the voltage of the second converter leaves the fundamental voltage component of the voltage of the first converter unchanged, such that the second converter does not generate a fundamental component of the output voltage.
    Type: Grant
    Filed: December 16, 2020
    Date of Patent: May 7, 2024
    Assignee: ABB Schweiz AG
    Inventors: Ralph Mario Burkart, Ioannis Tsoumas, Frederick Kieferndorf, Tobias Geyer
  • METHOD FOR OPERATING A POWER ELECTRONIC CONVERTER DEVICE WITH FLOATING CELLS
    Publication number: 20230052562
    Abstract: In one embodiment, a method of operating a power electronic converter device for an electrical power converter system is provided. The power electronic converter device includes a converter circuit, a first converter, and a second converter. The first converter and the second converter are switch with a switching pattern such that the first converter and the second converter generate voltages with stepwise voltages changes and an output voltage of the power electronic converter device results frum a superposition of the voltages of the first converter and the second converter. The switching pattern includes switching instants for the second converter such that the voltage of the second converter leaves the fundamental voltage component of the voltage of the first converter unchanged, such that the second converter does not generate a fundamental component of the output voltage.
    Type: Application
    Filed: December 16, 2020
    Publication date: February 16, 2023
    Inventors: Ralph Mario Burkart, Ioannis Tsoumas, Frederick Kieferndorf, Tobias Geyer