Patents Represented by Attorney, Agent or Law Firm Kevin Duncan, Esq.
  • Full thyristor bridge circuit with free wheeling diode for de-excitation control and stability sensing
    Patent number: 6442051
    Abstract: A circuit is provided for use in a synchronous generator excitation system. The circuit comprises a three-phase bridge having six legs. The bridge is connected with an AC power supply. A thyristor is provided in each of the six legs, wherein the thyristors provide a path for a device current. A free wheeling diode functions as a de-excitation means connected in parallel with the three-phase bridge. The free wheeling diode provides a discharge path for a field current.
    Type: Grant
    Filed: October 31, 2000
    Date of Patent: August 27, 2002
    Assignee: General Electric Company
    Inventors: Michael John Ryan, Mohammed Kassem Saleh, Rodney Alen Lawson, John Earl Bittner