Patents by Inventor Zachary S. Judkins

Zachary S. Judkins 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: 9190839
    Abstract: A photovoltaic string may include an open circuit voltage limiter that conducts current in one direction to provide a limiter voltage less than an open circuit voltage of the photovoltaic string, and that conducts current in the other direction. One or more open circuit voltage limiters may be connected across the photovoltaic string or across selected groups of solar cells of the photovoltaic string. The limiter voltage may be greater than a maximum power point voltage but less than the open circuit voltage of the photovoltaic string.
    Type: Grant
    Filed: December 5, 2013
    Date of Patent: November 17, 2015
    Assignee: SunPower Corporation
    Inventors: Keith Johnston, Zachary S. Judkins
  • Publication number: 20140153149
    Abstract: A photovoltaic string may include an open circuit voltage limiter that conducts current in one direction to provide a limiter voltage less than an open circuit voltage of the photovoltaic string, and that conducts current in the other direction. One or more open circuit voltage limiters may be connected across the photovoltaic string or across selected groups of solar cells of the photovoltaic string. The limiter voltage may be greater than a maximum power point voltage but less than the open circuit voltage of the photovoltaic string.
    Type: Application
    Filed: December 5, 2013
    Publication date: June 5, 2014
    Applicant: SunPower Corporation
    Inventors: Keith JOHNSTON, Zachary S. JUDKINS
  • Publication number: 20140078607
    Abstract: A solar concentrator assembly is disclosed. The solar concentrator assembly comprises a first reflective device having a first reflective front side and a first rear side, a second reflective device having a second reflective front side and a second rear side, the second reflective device positioned such that the first reflective front side faces the second rear side, and a support assembly coupled to and supporting the first and second reflective devices, the second reflective device positioned to be vertically offset from the first reflective device.
    Type: Application
    Filed: November 18, 2013
    Publication date: March 20, 2014
    Applicant: SUNPOWER CORPORATION
    Inventors: Ryan Linderman, Zachary S. Judkins, Brian Wares, Charles Almy
  • Patent number: 8630077
    Abstract: A photovoltaic string may include an open circuit voltage limiter that conducts current in one direction to provide a limiter voltage less than an open circuit voltage of the photovoltaic string, and that conducts current in the other direction. One or more open circuit voltage limiters may be connected across the photovoltaic string or across selected groups of solar cells of the photovoltaic string. The limiter voltage may be greater than a maximum power point voltage but less than the open circuit voltage of the photovoltaic string.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: January 14, 2014
    Assignee: SunPower Corporation
    Inventors: Keith Johnston, Zachary S. Judkins
  • Patent number: 8584667
    Abstract: A solar concentrator assembly is disclosed. The solar concentrator assembly comprises a first reflective device having a first reflective front side and a first rear side, a second reflective device having a second reflective front side and a second rear side, the second reflective device positioned such that the first reflective front side faces the second rear side, and a support assembly coupled to and supporting the first and second reflective devices, the second reflective device positioned to be vertically offset from the first reflective device.
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: November 19, 2013
    Assignee: SunPower Corporation
    Inventors: Ryan Linderman, Zachary S. Judkins, Brian Wares, Charles Almy
  • Publication number: 20130257155
    Abstract: A photovoltaic system includes solar cells and an inverter configured to convert direct current generated by the solar cells to alternating current. The photovoltaic system includes a maximum power point (MPP) tracking module configured to perform MPP tracking for the photovoltaic system. The MPP tracking module is configured to detect shading of the solar cells and to modify its MPP tracking to prevent tracking of local MPPs. The MPP tracking module may be incorporated in the inverter.
    Type: Application
    Filed: March 27, 2012
    Publication date: October 3, 2013
    Inventors: Zachary S. JUDKINS, Keith JOHNSTON
  • Publication number: 20130163137
    Abstract: A photovoltaic string may include an open circuit voltage limiter that conducts current in one direction to provide a limiter voltage less than an open circuit voltage of the photovoltaic string, and that conducts current in the other direction. One or more open circuit voltage limiters may be connected across the photovoltaic string or across selected groups of solar cells of the photovoltaic string. The limiter voltage may be greater than a maximum power point voltage but less than the open circuit voltage of the photovoltaic string.
    Type: Application
    Filed: December 22, 2011
    Publication date: June 27, 2013
    Inventors: Keith JOHNSTON, Zachary S. JUDKINS
  • Publication number: 20130049710
    Abstract: Devices for reducing the open circuit voltages of solar systems are described. In one embodiment, a solar system includes a string of a plurality of solar modules having an open circuit voltage. The solar system also includes a device for reducing the open circuit voltage of the string of the plurality of solar modules during an open circuit configuration.
    Type: Application
    Filed: August 25, 2011
    Publication date: February 28, 2013
    Inventors: Steven M. Kraft, Kevin Fischer, Greg Beardsworth, Zachary S. Judkins, Keith Johnston
  • Publication number: 20130000356
    Abstract: A sag-bending glass mold for creating a partial parabolic-curved glass sheet is disclosed. The glass mold comprises a glass-support surface having a cross-sectional profile of varying height. The cross-sectional profile has a first portion with profile of a non-parabolic, linear-square root composite shape. A method for forming a partial parabolic glass sheet is also disclosed. The method comprises positioning a planar glass sheet on a sag-bending mold having a linear-square root composite shape and deforming the glass sheet to follow the linear-square root composite shape of the sag-bending mold.
    Type: Application
    Filed: December 13, 2011
    Publication date: January 3, 2013
    Applicant: SUNPOWER CORPORATION
    Inventors: Zachary S. Judkins, Benjamin C. Bourne, Amine Berrada
  • Patent number: 8336539
    Abstract: A solar concentrator assembly is disclosed. The solar concentrator assembly comprises a first reflective device having a first reflective front side and a first rear side, a second reflective device having a second reflective front side and a second rear side, the second reflective device positioned such that the first reflective front side faces the second rear side, and a support assembly coupled to and supporting the first and second reflective devices, the second reflective device positioned to be vertically offset from the first reflective device.
    Type: Grant
    Filed: August 3, 2010
    Date of Patent: December 25, 2012
    Assignee: Sunpower Corporation
    Inventors: Ryan Linderman, Zachary S. Judkins, Brian Wares, Charles Almy
  • Publication number: 20120031394
    Abstract: A solar concentrator assembly is disclosed. The solar concentrator assembly comprises a first reflective device having a first reflective front side and a first rear side, a second reflective device having a second reflective front side and a second rear side, the second reflective device positioned such that the first reflective front side faces the second rear side, and a support assembly coupled to and supporting the first and second reflective devices, the second reflective device positioned to be vertically offset from the first reflective device.
    Type: Application
    Filed: August 3, 2010
    Publication date: February 9, 2012
    Inventors: Ryan Linderman, Zachary S. Judkins, Brian Wares, Charles Almy
  • Publication number: 20120031393
    Abstract: A solar concentrator assembly is disclosed. The solar concentrator assembly comprises a first reflector facing in a first direction, a second reflector facing in a second direction, the second direction opposite the first direction, and a rotational member having a long axis transverse to the first and second directions, the rotational member disposed between and coupled to each of the first and second reflectors.
    Type: Application
    Filed: August 3, 2010
    Publication date: February 9, 2012
    Inventors: Ryan Linderman, Zachary S. Judkins, Brian Wares, Charles Almy