Patents by Inventor Damon Charles Cayford

Damon Charles Cayford 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).

  • Methods and apparatus for controlling a power converter
    Patent number: 11356028
    Abstract: Methods and apparatus for controlling a power converter are provided herein. For example, apparatus can include a series resonant circuit including transformer with a primary side winding directly coupled to a DC bridge drive and a control system connected to the series resonant circuit and configured to measure a voltage at the primary side winding for determining a bias signal that can be applied to a resonant capacitor voltage at a secondary side winding of the transformer for restoring a DC content of the DC bridge drive to about zero.
    Type: Grant
    Filed: February 1, 2021
    Date of Patent: June 7, 2022
    Assignee: Enphase Energy, Inc.
    Inventors: Damon Charles Cayford, James Ormrod
  • METHODS AND APPARATUS FOR CONTROLLING A POWER CONVERTER
    Publication number: 20210242788
    Abstract: Methods and apparatus for controlling a power converter are provided herein. For example, apparatus can include a series resonant circuit including transformer with a primary side winding directly coupled to a DC bridge drive and a control system connected to the series resonant circuit and configured to measure a voltage at the primary side winding for determining a bias signal that can be applied to a resonant capacitor voltage at a secondary side winding of the transformer for restoring a DC content of the DC bridge drive to about zero.
    Type: Application
    Filed: February 1, 2021
    Publication date: August 5, 2021
    Inventors: Damon Charles Cayford, James Ormrod
  • Three-phase AC/AC converter with quasi-sine wave HF series resonant link
    Patent number: 10581336
    Abstract: An energy control circuit is provided. The energy control circuit includes an input circuit; an output circuit; an energy storage circuit coupled between the input circuit and the output circuit; and a controller coupled to the input circuit and output circuit for controlling an amount of energy stored in the energy storage circuit and for controlling a waveform generated by the output circuit using energy stored in the energy storage circuit.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: March 3, 2020
    Assignee: Enphase Energy, Inc.
    Inventors: Martin Fornage, Damon Charles Cayford
  • THREE-PHASE AC/AC CONVERTER WITH QUASI-SINE WAVE HF SERIES RESONANT LINK
    Publication number: 20190199228
    Abstract: An energy control circuit is provided. The energy control circuit includes an input circuit; an output circuit; an energy storage circuit coupled between the input circuit and the output circuit; and a controller coupled to the input circuit and output circuit for controlling an amount of energy stored in the energy storage circuit and for controlling a waveform generated by the output circuit using energy stored in the energy storage circuit.
    Type: Application
    Filed: December 21, 2018
    Publication date: June 27, 2019
    Inventors: Martin Fornage, Damon Charles Cayford