Patents by Inventor Diego A. Rocha

Diego A. Rocha 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).

  • Wound field generator overvoltage prevention
    Patent number: 10326394
    Abstract: An aircraft main power generation system includes a rotor shaft, a main power generator a permanent magnet, an exciter, an aircraft power bus, and a generator control unit. The generator control unit is configured to provide a control current to the exciter in response to a speed of the main power generator reaching a threshold speed and electrically couple the main power generator to the aircraft power bus in response to the speed of the main power generator reaching a minimum operating speed, the threshold speed being lower than the minimum operating speed; or provide a control current to the exciter in response to the speed of the main power generator reaching a predetermined speed and electrically coupling the main power generator to the aircraft power bus in response to a time period elapsing after the speed of the main power generator has reached the predetermined speed.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: June 18, 2019
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Diego A. Rocha, Dhaval Patel, Jonathan C. Dell, John F. Defenbaugh, Eric A. Brust, Andreas C. Koenig
  • WOUND FIELD GENERATOR OVERVOLTAGE PREVENTION
    Publication number: 20190123669
    Abstract: An aircraft main power generation system includes a rotor shaft, a main power generator a permanent magnet, an exciter, an aircraft power bus, and a generator control unit. The generator control unit is configured to provide a control current to the exciter in response to a speed of the main power generator reaching a threshold speed and electrically couple the main power generator to the aircraft power bus in response to the speed of the main power generator reaching a minimum operating speed, the threshold speed being lower than the minimum operating speed; or provide a control current to the exciter in response to the speed of the main power generator reaching a predetermined speed and electrically coupling the main power generator to the aircraft power bus in response to a time period elapsing after the speed of the main power generator has reached the predetermined speed.
    Type: Application
    Filed: October 24, 2017
    Publication date: April 25, 2019
    Inventors: Diego A. Rocha, Dhaval Patel, Jonathan C. Dell, John F. Defenbaugh, Eric A. Brust, Andreas C. Koenig