Patents by Inventor Jonathan List Ehlmann

Jonathan List Ehlmann 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).

  • THREE-LEVEL INVERTER SWITCHING
    Publication number: 20190044456
    Abstract: Inverter circuit operation for managing power factor changes is provided. Various modes of switch timing may be employed near zero-voltage crossings. Inverter switch timing may change during a cycle such that one timing strategy is employed approaching or leaving a zero-voltage crossing while another timing strategy is employed at other times of the cycle.
    Type: Application
    Filed: July 20, 2018
    Publication date: February 7, 2019
    Applicant: SunPower Corporation
    Inventors: Gabor Banfi, Jonathan List Ehlmann, Hengsi Qin
  • Three-level inverter switching
    Patent number: 10050561
    Abstract: Inverter circuit operation for managing power factor changes is provided. Various modes of switch timing may be employed near zero-voltage crossings. Inverter switch timing may change during a cycle such that one timing strategy is employed approaching or leaving a zero-voltage crossing while another timing strategy is employed at other times of the cycle.
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: August 14, 2018
    Assignee: SunPower Corporation
    Inventors: Gabor Banfi, Jonathan List Ehlmann, Hengsi Qin
  • CONVERTER TOPOLOGIES AND CONTROL
    Publication number: 20180226899
    Abstract: Systems, methods, and articles of manufacture are provided wherein inverter topologies and inverter control employ primary and secondary windings with a half-bridge circuit and an unfolding bridge circuit positioned between the second winding and an AC grid. Certain topologies may employ control circuits for controlling the bridges suitable for a phase angle of the AC grid.
    Type: Application
    Filed: April 9, 2018
    Publication date: August 9, 2018
    Applicant: SunPower Corporation
    Inventors: Patrick L. Chapman, Jonathan List Ehlmann, Fernando Rodriguez
  • THREE-LEVEL INVERTER SWITCHING
    Publication number: 20180191273
    Abstract: Inverter circuit operation for managing power factor changes is provided. Various modes of switch timing may be employed near zero-voltage crossings. Inverter switch timing may change during a cycle such that one timing strategy is employed approaching or leaving a zero-voltage crossing while another timing strategy is employed at other times of the cycle.
    Type: Application
    Filed: December 30, 2016
    Publication date: July 5, 2018
    Applicant: SunPower Corporation
    Inventors: Gabor Banfi, Jonathan List Ehlmann, Hengsi Qin
  • Converter topologies and control
    Patent number: 9954462
    Abstract: Systems, methods, and articles of manufacture are provided wherein inverter topologies and inverter control employ primary and secondary windings with a half-bridge circuit and an unfolding bridge circuit positioned between the second winding and an AC grid. Certain topologies may employ control circuits for controlling the bridges suitable for a phase angle of the AC grid.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: April 24, 2018
    Assignee: SunPower Corporation
    Inventors: Patrick L Chapman, Jonathan List Ehlmann, Fernando Rodriguez
  • CONVERTER TOPOLOGIES AND CONTROL
    Publication number: 20180006575
    Abstract: Systems, methods, and articles of manufacture are provided wherein inverter topologies and inverter control employ primary and secondary windings with a half-bridge circuit and an unfolding bridge circuit positioned between the second winding and an AC grid. Certain topologies may employ control circuits for controlling the bridges suitable for a phase angle of the AC grid.
    Type: Application
    Filed: June 30, 2016
    Publication date: January 4, 2018
    Applicant: SunPower Corporation
    Inventors: Patrick L Chapman, Jonathan List Ehlmann, Fernando Rodriguez