Patents by Inventor Steven D. Andre

Steven D. Andre 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).

  • POWER CAPTURE DURING COAST DOWN OF TURBINE GENERATOR
    Publication number: 20250290429
    Abstract: A system for generating power includes a turbine generator for generating alternating current (AC) power and a power electronics module that provides a first signal to the turbine generator to switch an operating mode of the turbine generator from an off mode to a startup mode. The first signal is variable frequency power. The system includes a controller that provides a second signal that causes the turbine generator to switch from a normal operating mode to a coast down mode. In the startup mode, the turbine generator accelerates to a full rotational rate and in the coast down mode, the turbine generator decelerates from the full rotational rate to a stop over an interval of time. The system includes a power converter that converts rotational inertia by the turbine generator into direct current (DC) power responsive to the turbine generator operating in the coast down mode.
    Type: Application
    Filed: May 30, 2025
    Publication date: September 18, 2025
    Inventor: STEVEN D. ANDRE
  • Power capture during coast down of turbine generator
    Patent number: 12338741
    Abstract: A system for generating power includes a turbine generator for generating alternating current (AC) power and a power electronics module that provides a first signal to the turbine generator to switch an operating mode of the turbine generator from an off mode to a startup mode. The first signal is variable frequency power. The system includes a controller that provides a second signal that causes the turbine generator to switch from a normal operating mode to a coast down mode. In the startup mode, the turbine generator accelerates to a full rotational rate and in the coast down mode, the turbine generator decelerates from the full rotational rate to a stop over an interval of time. The system includes a power converter that converts rotational inertia by the turbine generator into direct current (DC) power responsive to the turbine generator operating in the coast down mode.
    Type: Grant
    Filed: November 20, 2023
    Date of Patent: June 24, 2025
    Assignee: Florida Power & Light Company
    Inventor: Steven D. Andre
  • POWER CAPTURE DURING COAST DOWN OF TURBINE GENERATOR
    Publication number: 20250163822
    Abstract: A system for generating power includes a turbine generator for generating alternating current (AC) power and a power electronics module that provides a first signal to the turbine generator to switch an operating mode of the turbine generator from an off mode to a startup mode. The first signal is variable frequency power. The system includes a controller that provides a second signal that causes the turbine generator to switch from a normal operating mode to a coast down mode. In the startup mode, the turbine generator accelerates to a full rotational rate and in the coast down mode, the turbine generator decelerates from the full rotational rate to a stop over an interval of time. The system includes a power converter that converts rotational inertia by the turbine generator into direct current (DC) power responsive to the turbine generator operating in the coast down mode.
    Type: Application
    Filed: November 20, 2023
    Publication date: May 22, 2025
    Inventor: STEVEN D. ANDRE