Patents by Inventor Philip Michael Churn

Philip Michael Churn 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).

  • Controller for a permanent magnet generator and a generator in combination with such a controller
    Patent number: 7482787
    Abstract: A generator controller for controlling a permanent magnet generator where each phase of the generator is connectable to a DC link via electrically controllable switches, the controller characterized by a data processor adapted to receive a measurement of generator current output and a demand current, and to form a current error between the demanded value and the measured generator current; derive a target voltage as a function of the current error; and form control signals for the electrically controllable switches as a function of the target voltage.
    Type: Grant
    Filed: May 9, 2007
    Date of Patent: January 27, 2009
    Assignee: Goodrich Control Systems Limited
    Inventors: Philip Henry Mellor, Stephen George Burrow, Philip Michael Churn
  • Controller for a permanent magnet generator and a generator in combination with such a controller
    Patent number: 7307404
    Abstract: A generator controller for controlling a permanent magnet generator where each phase of the generator is connectable to a DC link via electrically controllable switches, the controller characterised by a data processor adapted to receive a measurement of generator current output and a demand current, and to form a current error between the demanded value and the measured generator current; derive a target voltage as a function of the current error; and form control signals for the electrically controllable switches as a function of the target voltage.
    Type: Grant
    Filed: May 16, 2006
    Date of Patent: December 11, 2007
    Assignee: Goodrich Control Systems Limited
    Inventors: Philip Henry Mellor, Stephen George Burrow, Philip Michael Churn