Patents by Inventor Martin Fornage

Martin Fornage 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).

  • Patent number: 10734913
    Abstract: Method and apparatus for generating power. In one embodiment the method comprises determining a value of a DC parameter pertaining to a DC power source providing DC power to an inverter; comparing the value to a threshold; and operating the inverter to generate positive power or negative power based on a result of comparing the value to the threshold.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: August 4, 2020
    Assignee: Enphase Energy, Inc.
    Inventor: Martin Fornage
  • Patent number: 10707775
    Abstract: A method and apparatus for multi phase shift control of a power converter. In one embodiment, the method comprises controlling a phase shift between a left leg and a right leg of a first bridge of the power converter during operation of the power converter; and controlling a phase shift between the first bridge and a second bridge of the power converter during the operation of the power converter, wherein the phase shift between the left and the right legs and the phase shift between the first and the second bridges are controlled based on an input voltage of the power converter and a required output voltage of the power converter.
    Type: Grant
    Filed: August 4, 2014
    Date of Patent: July 7, 2020
    Assignee: Enphase Energy, Inc.
    Inventors: Michael J. Harrison, Donald Richard Zimmanck, Martin Fornage
  • Publication number: 20200127459
    Abstract: A method and apparatus for autonomously operating a microgrid power generator. In one embodiment, the method comprises obtaining a first measurement of at least one grid parameter of a microgrid transmission line coupled to a power generator in a microgrid; comparing the first measurement to a turn-on threshold; initiating, when the first measurement satisfies the turn-on threshold, power generation by the power generator; obtaining, after initiation of the energy generation, a second measurement of the at least one grid parameter of the microgrid transmission line; comparing the second measurement to a shut-down threshold that is greater than the turn-on threshold; and stopping, when the second measurement satisfies the shut-down threshold, the power generation by the power generator.
    Type: Application
    Filed: December 20, 2019
    Publication date: April 23, 2020
    Inventors: Donald Richard Zimmanck, Martin Fornage, Michael J. Harrison, Christopher Rowe
  • 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
  • Publication number: 20200028362
    Abstract: A method and apparatus for power converter current control. In one embodiment, the method comprises controlling an instantaneous current generated by a power converter that is part of an AC battery such that the power converter appears, from the perspective of an AC line coupled to the power converter, as a virtual AC voltage source in series with a virtual impedance, wherein real and reactive phasor currents for the power converter are indirectly controlled by modifying amplitude and phase of a virtual AC voltage waveform that defines the virtual AC voltage source.
    Type: Application
    Filed: September 30, 2019
    Publication date: January 23, 2020
    Inventors: Christopher Rowe, Donald Richard Zimmanck, Michael J. Harrison, Martin Fornage
  • Patent number: 10516270
    Abstract: A method and apparatus for autonomously operating a microgrid power generator. In one embodiment, the method comprises obtaining a first measurement of at least one grid parameter of a microgrid transmission line coupled to a power generator in a microgrid; comparing the first measurement to a turn-on threshold; initiating, when the first measurement is less than the turn-on threshold, power generation by the power generator; obtaining, after initiation of the energy generation, a second measurement of the at least one grid parameter of the microgrid transmission line; comparing the second measurement to a shut-down threshold that is greater than the turn-on threshold; and stopping, when the second measurement exceeds the shut-down threshold, the power generation by the power generator.
    Type: Grant
    Filed: January 4, 2017
    Date of Patent: December 24, 2019
    Assignee: Enphase Energy, Inc.
    Inventors: Donald Richard Zimmanck, Martin Fornage, Michael J. Harrison, Christopher Rowe
  • Patent number: 10431980
    Abstract: A method and apparatus for power converter current control. In one embodiment, the method comprises controlling an instantaneous current generated by a power converter that is part of an AC battery such that (i) the power converter appears, from the perspective of an AC line coupled to the power converter, as a virtual AC voltage source in series with a virtual impedance, wherein real and reactive phasor currents for the power converter are indirectly controlled by modifying amplitude and phase of a virtual AC voltage waveform that defines the virtual AC voltage source, and (ii) active power flow is prioritized while the AC battery is operating in a charge mode.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: October 1, 2019
    Assignee: Enphase Energy, Inc.
    Inventors: Christopher Rowe, Donald Richard Zimmanck, Michael J. Harrison, Martin Fornage
  • 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
  • Publication number: 20190089412
    Abstract: Apparatus for communicating across an isolation barrier. In one embodiment, the apparatus comprises a transformer having a first winding disposed on a first side of a printed circuit board (PCB) and coupled to a first local ground, and a second winding disposed on a second side of the PCB, the second side opposite to the first side, and coupled to a second local ground; a transmitter coupled to the first winding; and a receiver, coupled the second winding, that generates an output signal based on a signal received from the transmitter.
    Type: Application
    Filed: September 21, 2018
    Publication date: March 21, 2019
    Inventor: Martin Fornage
  • Patent number: 10193347
    Abstract: A method for converting DC input power into AC output power comprising operating in a continuous mode, while the DC input power is at a first level, wherein DC input power is continuously converted into AC output power and applied to an AC power grid and upon detecting the DC input power is at a second level, operating in a burst mode, wherein a burst of AC output power for a half grid cycle is followed by a period of energy storage lasting an integer number of grid cycles.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: January 29, 2019
    Assignee: Enphase Energy, Inc.
    Inventor: Martin Fornage
  • Patent number: 10141868
    Abstract: A method and apparatus for providing multi-phase power. In one embodiment, the apparatus comprises a cycloconverter controller for determining a charge ratio based on a reference waveform; and a cycloconverter, coupled to the cycloconverter controller and to a multi-phase AC line, for selectively coupling an alternating current to each line of the multi-phase AC line based on the charge ratio.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: November 27, 2018
    Assignee: Enphase Energy, Inc.
    Inventors: Martin Fornage, Donald Richard Zimmanck
  • Publication number: 20180301914
    Abstract: A method and system for AC battery operation. In one embodiment, the method comprises determining, at a battery management unit (BMU) coupled to an AC battery comprising a power converter and a battery that is rechargeable, a bias control voltage that indicates a state of a charge process of the AC battery; and coupling, by a bias control module of the BMU, the bias control voltage to the power converting for communicating the state of the charge process to and from the BMU and the power converter.
    Type: Application
    Filed: April 13, 2018
    Publication date: October 18, 2018
    Inventors: Martin Fornage, Mauricio Cespedes Moya
  • Patent number: 10003194
    Abstract: Apparatus for power conversion. In one embodiment, the apparatus comprises a battery unit, coupled to a power line, comprising (a) a plurality of power cells, wherein each power cell of the plurality of power cells comprises a battery cell coupled to a pico-converter, wherein the pico-converter is a bidirectional power converter; and (b) a master controller, coupled to each power cell of the plurality of power cells, for dynamically and individually controlling both an operating state and a power conversion direction for each power cell in the plurality of power cells to generate a predetermined power output from the battery unit.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: June 19, 2018
    Assignee: Enphase Energy, Inc.
    Inventor: Martin Fornage
  • Patent number: 9960707
    Abstract: Apparatus and system for power conversion. In one embodiment, the apparatus comprises a power converter comprising a first plate for receiving an input power; a second plate for providing an output power; a plurality of power converter bricks coupled in parallel between the first and the second plates, each power converter brick comprising (i) an input stage for converting a brick input power to a second power, (ii) an output stage, coupled to the input stage by a transformer, for converting the second power to a brick output power, (iii) a local controller coupled to the input stage for controlling power conversion by the power converter brick; and a master controller coupled to each power converter brick of the plurality of power converter bricks, wherein the master controller dynamically controls operation of each power converter brick of the plurality of power converter bricks to generate the output power.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: May 1, 2018
    Assignee: Enphase Energy, Inc.
    Inventors: Martin Fornage, Erik Anthony Weyker
  • Patent number: 9948204
    Abstract: A method and apparatus for controlling power conversion. In one embodiment, the method comprises computing a voltage ratio based on a voltage conversion in a resonant converter; comparing the voltage ratio to a threshold; and controlling, independent of switching frequency of the resonant converter, power output from the resonant converter based on whether the voltage ratio satisfies the threshold.
    Type: Grant
    Filed: May 18, 2012
    Date of Patent: April 17, 2018
    Assignee: Enphase Energy, Inc.
    Inventors: Martin Fornage, Donald Richard Zimmanck
  • Publication number: 20180097366
    Abstract: A system and method for controlling a behavior of at least one member of a local power grid. In one embodiment, the system comprises a monitoring system, comprising at least one processor, for obtaining a measure of grid stress and deriving at least one of financial incentives and financial disincentives, based on the measure of grid stress, to cause at least one member of the local grid to change behavior.
    Type: Application
    Filed: September 25, 2017
    Publication date: April 5, 2018
    Inventor: Martin Fornage
  • Patent number: 9917447
    Abstract: An apparatus for synchronizing operation of one or more appliances to an amount of energy produced by a local power generator comprises a controller for reducing the power consumed by the one or more appliances in relation to an amount of power being generated by the local power generator. In one embodiment, the operation of the appliance(s) is controlled by the controller so that the system of appliance(s) and the local power generator does not consume any external energy (e.g., from a commercial power grid), despite variations in the amount of power delivered by the local power generator.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: March 13, 2018
    Assignee: Enphase Energy, Inc.
    Inventor: Martin Fornage
  • Patent number: 9806445
    Abstract: An apparatus and system for coupling power. In one embodiment, the apparatus comprises a trunk cable comprising a first conductor, a second conductor, and a third conductor; a first connector, wherein a first terminal of the first connector is conductively coupled to the first conductor; a second connector, wherein a first terminal of the second connector is conductively coupled to the second conductor; and a third connector, wherein a first terminal of the third connector is conductively coupled to the third conductor, and wherein the first, the second, and the third connectors are each adapted to couple to a different DC-AC power converter and an output of the trunk cable comprises three-phase AC power.
    Type: Grant
    Filed: April 17, 2013
    Date of Patent: October 31, 2017
    Assignee: Enphase Energy, Inc.
    Inventors: Martin Fornage, Raghuveer R. Belur
  • Patent number: 9801293
    Abstract: A system and apparatus for energy storage/delivery device mounting. In one embodiment, the apparatus comprises a mounting plate comprising (i) a plurality of plate mounting features for securing the mounting plate to at least one structure; (ii) a plurality of spatial alignment features for spatially aligning the mounting plate with a second mounting plate; and (iii) at least one energy storage/delivery device mounting feature for mating with a corresponding feature of the energy storage/delivery device to removably mount the energy storage/delivery device on the mounting plate.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: October 24, 2017
    Assignee: Enphase Energy, Inc.
    Inventor: Martin Fornage
  • Patent number: 9793854
    Abstract: Method and apparatus for determining a ground fault impedance. In one embodiment the apparatus comprises a voltage divider and a ground fault detection module for (i) determining a first voltage based on at least one voltage measurement of the voltage divider while the voltage divider is coupled between the first AC line and the DC line; (ii) determining a second voltage based on at least one voltage measurement of the voltage divider while the voltage divider is coupled between the second AC line and the DC line; (iii) determining a differential voltage based on at least one voltage measurement between the first AC line and the second AC line; and (iv) computing the ground fault impedance based on the first voltage, the second voltage, and the differential voltage.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: October 17, 2017
    Assignee: Enphase Energy, Inc.
    Inventors: Martin Fornage, Michael Harrison