Patents by Inventor Stan Simms

Stan Simms 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).

  • Multi-level active filter
    Patent number: 7405498
    Abstract: A multi-phase active filter includes a group of power cells electrically connected in a three-phase configuration, a precharging circuit, and a controller that controls the voltage delivered to the plurality of power cells. Each power cell includes an inverter having a pair of direct current (DC) terminals, at least one capacitor electrically connected in parallel with the inverter, and an energy dissipating circuit that is electrically connected in parallel with the inverter. The energy dissipating circuit of each power cell self-regulates DC voltage within the cell.
    Type: Grant
    Filed: May 16, 2006
    Date of Patent: July 29, 2008
    Assignee: Siemens Energy & Automation, Inc.
    Inventors: Mukul Rastogi, Peter Hammond, Stan Simms
  • Multi-level active filter
    Publication number: 20070109823
    Abstract: A multi-phase active filter includes a group of power cells electrically connected in a three-phase configuration, a precharging circuit, and a controller that controls the voltage delivered to the plurality of power cells. Each power cell includes an inverter having a pair of direct current (DC) terminals, at least one capacitor electrically connected in parallel with the inverter, and an energy dissipating circuit that is electrically connected in parallel with the inverter. The energy dissipating circuit of each power cell self-regulates DC voltage within the cell.
    Type: Application
    Filed: May 16, 2006
    Publication date: May 17, 2007
    Inventors: Mukul Rastogi, Peter Hammond, Stan Simms