Patents Assigned to NEXTRACKER
  • Patent number: 11874030
    Abstract: A coupling system for use with a solar tracker includes a support flange, a swivel flange rotatably supported on the support flange, an articulation joint interposed between each of the support flange and the swivel flange and rotatably supported by each of the support flange and the swivel flange, wherein opposed first and second end portions of the articulation joint are configured to be operably coupled to a respective first and second torque tube, and at least one locking fastener selectively coupled to a portion of the support flange and a portion of the swivel flange, the at least one locking fastener configured to selectively inhibit rotation of the swivel flange relative to the support flange.
    Type: Grant
    Filed: December 13, 2022
    Date of Patent: January 16, 2024
    Assignee: NEXTRACKER LLC
    Inventors: Ricardo Delgado-Nanez, Kin Tsim
  • Patent number: 11804721
    Abstract: A multi-power distributed storage system including a first power source; a second power source electrically connected to a common bus with the first power source; a single input port inverter electrically connected to the common bus. The system including a controller configured to communicate with at least the second power source, and the single input port inverter. The second power source including a plurality of battery banks and a plurality of bi-directional DC/DC converters configured to charge and discharge the plurality of battery banks and provide DC to the single input port inverter.
    Type: Grant
    Filed: March 15, 2021
    Date of Patent: October 31, 2023
    Assignee: NEXTRACKER LLC
    Inventor: Yang Liu
  • Patent number: 11774539
    Abstract: A method for controlling the orientation of a single-axis solar tracker (1) orientable about an axis of rotation (A), said method repetitively completing successive control phases, where each control phase implements the following successive steps: a) observing the cloud coverage above the solar tracker (1); b) comparing the observed cloud coverage with cloud coverage models stored in a database, each cloud coverage model being associated to an orientation setpoint value of the solar tracker; c) matching the observed cloud coverage with a cloud coverage model; d) servo-controlling the orientation of the solar tracker by applying the orientation setpoint value associated to said cloud coverage model retained during step c). The present invention finds application in the field of solar trackers.
    Type: Grant
    Filed: April 5, 2021
    Date of Patent: October 3, 2023
    Assignee: NEXTRACKER LLC
    Inventors: Jérôme Arliaud, Adrien Crucifix, Philippe Blanc
  • Patent number: 11764723
    Abstract: A solar tracker system including a tracker apparatus including a plurality of solar modules, each of the solar modules being spatially configured to face in a normal manner in an on sun position in an incident direction of electromagnetic radiation derived from the sun, wherein the solar modules include a plurality of PV strings, and a tracker controller. The tracker controller includes a processor, a memory, a power supply configured to provide power to the tracker controller, a plurality of power inputs configured to receive a plurality of currents from the plurality of PV strings, a current sensing unit configured to individually monitor the plurality of currents, a DC-DC power converter configured to receive the plurality of power inputs powered from the plurality of PV strings to supply power to the power supply, and a motor controller, wherein the tracker controller is configured to track the sun position.
    Type: Grant
    Filed: May 14, 2021
    Date of Patent: September 19, 2023
    Assignee: NEXTRACKER LLC
    Inventors: Yang Liu, Chen Li
  • Patent number: 11757297
    Abstract: Systems and methods for managing flow batteries utilize a battery management controller (BMC) coupled between a flow battery and a DC/DC converter, which is coupled to an electrical grid or a photovoltaic device via an inverter. The inverter converts an AC voltage to a first DC voltage and the DC/DC converter steps down the first DC voltage to a second DC voltage. The BMC includes a first power route, a second power route, and a current source converter coupled to the second power route. The BMC initializes the flow battery with a third DC voltage using the current source converter until a sensing circuit senses that the voltage of the flow battery has reached a predetermined voltage. The sensing circuit may include a capacitor, which has a small capacitance and is coupled across each cell of the flow battery, coupled in series between two resistors having very large resistances.
    Type: Grant
    Filed: December 5, 2022
    Date of Patent: September 12, 2023
    Assignee: NEXTRACKER LLC
    Inventors: Chen Li, Yang Liu, Jonathan Kenzo Kamei
  • Patent number: 11739986
    Abstract: A solar tracker system comprising a plurality of on sun trackers and a plurality of off sun tracker. Each tracker is selectively adjusted to achieve a desired power output of the solar power plant system in an example.
    Type: Grant
    Filed: February 25, 2021
    Date of Patent: August 29, 2023
    Assignee: NEXTRACKER LLC
    Inventors: Yu Dong Ma, Yang Liu, Francesco Borrelli, Allan Daly, Ricardo Delgado-Nanez, Alexander W. Au
  • Patent number: 11722000
    Abstract: A power converter converts a medium-voltage output from a solar module to an appropriate voltage to power a solar tracker system. The power converter includes a voltage divider having at least two legs, a first semiconductor switch subassembly coupled in parallel with a first leg of the voltage divider, and a second semiconductor switch subassembly coupled in parallel with a second leg of the voltage divider. The power converter may be a unidirectional or a bidirectional power converter. In implementations, the signals for driving the semiconductor switches of the first and second semiconductor switch subassemblies may be shifted out of phase from each other. In implementations, if the bus voltages to the semiconductor switches are not balanced, the pulse width of the driving signal of the semiconductor switch supplied with the higher bus voltage is decreased for at least one cycle.
    Type: Grant
    Filed: February 25, 2020
    Date of Patent: August 8, 2023
    Assignee: NEXTRACKER LLC
    Inventors: Chen Li, Yang Liu, Mohammad Salmaan Khan, Jonathan Kenzo Kamei, Sandeep Sanjiva Lele
  • Patent number: 11705859
    Abstract: A solar tracking system including a plurality of bases, a torque tube supported by the plurality of bases and configured to support a plurality of solar modules, and a drive device operably connected to the torque tube and arranged to translate the torque tube in a direction parallel to its longitudinal axis. The solar tracking system also includes a plurality of helical guides operably connected to the torque tube, and a plurality of cam assemblies, wherein upon linear movement of the torque tube, interaction between the helical guides and cam assemblies causes the torque tube to rotate about its linear axis.
    Type: Grant
    Filed: June 24, 2021
    Date of Patent: July 18, 2023
    Assignee: NEXTracker LLC
    Inventor: Tyler Watson
  • Patent number: 11689150
    Abstract: In an example, a clamp assembly for a glass on glass solar module for a tracker is included. The assembly has a lower clamp structure characterized by a top-hat shaped rail structure having a length extending from a first end to a second end. In an example, the assembly has an upper clamp structure configured to sandwich a pair of edges of a pair of solar modules with a portion of the lower clamp structure. In an example, the assembly has a locking spacer configured to the pair of edges of the pair of solar modules. In an example, the pair of edges comprises substantially glass material. In an example, the assembly has a pair of key structures configured with the locking spacer. Each of the key structures is affixed to each of the solar modules to physically lock each of the solar modules to the upper clamp structure.
    Type: Grant
    Filed: August 20, 2019
    Date of Patent: June 27, 2023
    Assignee: NEXTRACKER LLC
    Inventor: Alexander W. Au
  • Patent number: 11674537
    Abstract: The present disclosure relates to a solar power system including at least one mounting assembly including a rail, at least one framed solar module, and at least one clip to secure the solar module to the rail. The clip includes at least a pair of sidewalls extending from a top plate or rear wall, each sidewall including a slot, a recess, and a locking member, at least one of the slot, recess, or both include a serrated edge. The clips may secure a solar module to the rail by coupling to the frame of the solar module to a rail of the mounting assembly within the slots of the sidewalls. The clips may be secured to the mounting assembly by locking members positioned on a distal end thereof. The clips may establish an electrical grounding connection between the frame of the solar module and the rail.
    Type: Grant
    Filed: June 17, 2020
    Date of Patent: June 13, 2023
    Assignee: NEXTRACKER LLC
    Inventors: Tyler Watson, Ricardo Delgado-Nanez
  • Patent number: 11671052
    Abstract: A solar module mounting bracket assembly includes a rail configured to support a solar module thereon, and a pair of braces. The braces each have a first end portion movably coupled to the rail. The braces are movable relative to the rail between a collapsed configuration and an expanded configuration. In the expanded configuration, the braces cooperatively define a channel dimensioned for receipt of a frame member.
    Type: Grant
    Filed: January 25, 2022
    Date of Patent: June 6, 2023
    Assignee: NEXTRACKER LLC
    Inventors: Tyler Joseph Watson, Ricardo Delgado-Nanez
  • Patent number: 11616467
    Abstract: In an example, the solar tracker has a clamp assembly configured to pivot a torque tube. In an example, the assembly has a support structure configured as a frame having configured by a first and second anchoring region. In an example, the support structure is configured from a thickness of metal material. In an example, the support structure is configured in an upright manner, and has a major plane region. In an example, the assembly has a pivot device configured on the support structure, a torque tube suspending on the pivot device and aligned within an opening of the support, and configured to be normal to the plane region. In an example, the torque tube is configured on the pivot device to move about an arc in a first direction or in a second direction such that the first direction is in a direction opposite to the second direction.
    Type: Grant
    Filed: May 4, 2021
    Date of Patent: March 28, 2023
    Assignee: NEXTRACKER LLC
    Inventor: Alexander W. Au
  • Patent number: 11588434
    Abstract: The present disclosure describes an expandable splice configured for reinforcing a tube of a solar owner system, the splice including a top panel, a bottom panel, a first side panel, a second side panel, and at least one beveled corner panel, wherein the first and second side panels are connected to the top and bottom panels either directly or by the at least one beveled corner panel to form a channel therebetween.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: February 21, 2023
    Assignee: NEXTRACKER LLC
    Inventors: David Kresse, Sam Heller
  • Patent number: 11563401
    Abstract: In an example, the system has a mechanical isolator comprising an elastic material configured to separate the panel rail from the torque tube cause destructive interference with a natural resonant frequency of the system without the mechanical isolator to reduce a mechanical vibration of the system.
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: January 24, 2023
    Assignee: NEXTRACKER LLC
    Inventor: Alexander W. Au
  • Patent number: 11558007
    Abstract: In an example, the solar tracker has a clamp assembly that is configured to pivot a torque tube. In an example, the assembly has a support structure configured as a frame having configured by a first anchoring region and a second anchoring region. In an example, the support structure is configured from a thickness of metal material. In an example, the support structure is configured in an upright manner, and has a major plane region. In an example, the assembly has a pivot device configured on the support structure and a torque tube suspending on the pivot device and aligned within an opening of the support and configured to be normal to the plane region. In an example, the torque tube is configured on the pivot device to move about an arc in a first direction or in a second direction such that the first direction is in a direction opposite to the second direction.
    Type: Grant
    Filed: April 19, 2021
    Date of Patent: January 17, 2023
    Assignee: NEXTRACKER LLC
    Inventor: Alexander W. Au
  • Patent number: 11558009
    Abstract: Solar array (1) comprising solar modules (3) distributed in rows (10), each solar module comprising solar collector (5) carried by a single-axis solar tracker (4), a reference solar power plant (2) comprising a central reference solar module and at least one secondary reference solar module, and a piloting unit (7) adapted for: piloting the angular orientation of the central reference module according to a central reference orientation setpoint corresponding to an initial orientation setpoint, piloting the orientation of each secondary reference module according to a secondary reference orientation setpoint corresponding to the initial orientation setpoint shifted by a predefined offset angle; receiving an energy production value from each reference module; piloting the orientation of the modules, except for the reference modules, by applying the reference orientation setpoint associated to the reference module having the highest production value.
    Type: Grant
    Filed: March 18, 2022
    Date of Patent: January 17, 2023
    Assignee: NEXTRACKER LLC
    Inventors: Madyan Michotte De Welle, Jérôme Arliaud
  • Patent number: 11552208
    Abstract: A solar module configured in a frame assembly with multi-configuration attachment member(s), which has locking and unlocking characteristics.
    Type: Grant
    Filed: September 14, 2021
    Date of Patent: January 10, 2023
    Assignee: NEXTRACKER LLC
    Inventor: Alexander W. Au
  • Patent number: 11525604
    Abstract: A coupling system for use with a solar tracker includes a support flange, a swivel flange rotatably supported on the support flange, an articulation joint interposed between each of the support flange and the swivel flange and rotatably supported by each of the support flange and the swivel flange, wherein opposed first and second end portions of the articulation joint are configured to be operably coupled to a respective first and second torque tube, and at least one locking fastener selectively coupled to a portion of the support flange and a portion of the swivel flange, the at least one locking fastener configured to selectively inhibit rotation of the swivel flange relative to the support flange.
    Type: Grant
    Filed: November 12, 2021
    Date of Patent: December 13, 2022
    Assignee: NEXTRACKER LLC
    Inventors: Ricardo Delgado-Nanez, Kin Tsim
  • Patent number: 11522383
    Abstract: Systems and methods for managing flow batteries utilize a battery management controller (BMC) coupled between a flow battery and a DC/DC converter, which is coupled to an electrical grid or a photovoltaic device via an inverter. The inverter converts an AC voltage to a first DC voltage and the DC/DC converter steps down the first DC voltage to a second DC voltage. The BMC includes a first power route, a second power route, and a current source converter coupled to the second power route. The BMC initializes the flow battery with a third DC voltage using the current source converter until a sensing circuit senses that the voltage of the flow battery has reached a predetermined voltage. The sensing circuit may include a capacitor, which has a small capacitance and is coupled across each cell of the flow battery, coupled in series between two resistors having very large resistances.
    Type: Grant
    Filed: June 10, 2019
    Date of Patent: December 6, 2022
    Assignee: NEXTRACKER LLC
    Inventors: Chen Li, Yang Liu, Jonathan Kenzo Kamei
  • Patent number: 11502638
    Abstract: A solar module mounting bracket system including a plurality of solar modules including mounting slots formed in a sidewall of the solar module, a torque tube configured to support the solar modules such that they can be rotated, a plurality of mounting brackets configured for integration with the torque tube and to which the plurality of solar modules are mounted, at least one first retainer assembly connected to one of the plurality of mounting brackets, the first retainer assembly including a through bolt, a spring, a mounting tab, and nut. When a solar module is placed on the mounting bracket and supported by the torque tube the mounting tab retainer assembly is received in the mounting slot of the solar module.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: November 15, 2022
    Assignee: NEXTRACKER LLC
    Inventors: Tyler Joseph Watson, Dennis Marvin Lawson, Thao Thanh Hoang, Paul Daniel Habib