Patents by Inventor Thomas Fenley

Thomas Fenley 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).

  • Publication number: 20050073279
    Abstract: A synchronous machine control device for a polyphase synchronous machine includes a phase detection sensor and a control circuit. The phase detection sensor is set to 90° advanced. The control circuit includes phase detection, commutation driver and time delay circuits. The phase detection circuit is coupled to the phase detection sensor and is configured to determine electrical phase of the machine. The commutation driver circuit is coupled to the phase detection circuit and has high-side and low-side outputs for selectively and alternately controlling commutation of the machine. The time delay circuit is coupled to the phase detection sensor, the phase detection circuit and the commutation driver circuit. The time delay circuit provides a control output to the commutation driver circuit based upon an adjustable setpoint compared to a speed of the machine as measured by the phase detection circuit.
    Type: Application
    Filed: September 30, 2004
    Publication date: April 7, 2005
    Inventor: Thomas Fenley