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    Frameless solar module mounting
    2.
    发明授权
    Frameless solar module mounting 有权

    公开(公告)号：US11962268B2

    公开(公告)日：2024-04-16

    申请号：US18196313

    申请日：2023-05-11

    Applicant: Nextracker LLC

    Inventor： Alexander W. Au

    IPC: F16B5/06 ,  H02S20/30 ,  H02S20/32 ,  F24S25/634 ,  F24S25/636 ,  H02S30/10

    CPC classification number: H02S20/32 ,  F16B5/06 ,  F16B5/0607 ,  F16B5/0621 ,  F16B5/0635 ,  F16B5/0664 ,  H02S20/30 ,  F24S25/634 ,  F24S25/636 ,  H02S30/10 ,  Y02E10/50

    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.

    Fixed DC bus and hydrogen generation system
    3.
    发明授权
    Fixed DC bus and hydrogen generation system 有权

    公开(公告)号：US12224703B2

    公开(公告)日：2025-02-11

    申请号：US17389192

    申请日：2021-07-29

    Applicant: NEXTracker LLC

    Inventor： Alexander W. Au ,  Venkata Rahul Abbaraju ,  Yang Liu ,  Wesley Chu

    IPC: H02S40/32 ,  H02J3/38 ,  H02J7/34 ,  H02J15/00

    Abstract: A distributed direct current power system including an inverter to invert DC to alternating current (AC), a plurality of photovoltaic (PV) strings, and a plurality of maximum power point tracking (MPPT) converters coupled between the plurality of photovoltaic (PV) strings, respectively, and the central inverter, the plurality of MPPT converters configured to maximize solar power production by the plurality of PV strings and minimize mismatch between the plurality of PV strings. The system also including a plurality of batteries, a plurality of DC-DC battery converters (DCBC) coupled to the plurality of batteries and configured to manage charge and discharge of the plurality of batteries, enable interconnection of the plurality of PV strings and the plurality of batteries, and supply a constant medium DC voltage to the central inverter, and a hydrogen generation system in electrical communication with the inverter, the photovoltaic strings, or the batteries.

    HIGH EFFICIENCY GEAR BOX AND HOLDING SYSTEM FOR SOLAR TRACKERS
    4.
    发明申请
    HIGH EFFICIENCY GEAR BOX AND HOLDING SYSTEM FOR SOLAR TRACKERS 有权

    公开(公告)号：US20240372505A1

    公开(公告)日：2024-11-07

    申请号：US18652058

    申请日：2024-05-01

    Applicant: Nextracker LLC

    Inventor： David Kresse ,  Yang Liu ,  Alexander W. Au

    IPC: H02S20/32 ,  H02K7/102 ,  H02K7/116

    Abstract: A solar tracker includes a plurality of piers, one end of the piers configured for installation in the earth, a plurality of bearings, each bearing supported by a pier, a torque tube received in the plurality of bearings and configured to support a plurality of solar modules, a plurality of drive motors, each drive motor associated with a pier, a plurality of high efficiency gear boxes, each high efficiency gear box associated with one of the plurality of drive motors; and a plurality of brakes, each brake associated with one of the plurality of high efficiency gear boxes and one of the plurality of drive motors, wherein in combination the plurality of brakes apply sufficient braking force to prevent back driving of the torque tube.

    Systems and methods for tracker-level protection
    6.
    发明授权
    Systems and methods for tracker-level protection 有权

    公开(公告)号：US12047033B2

    公开(公告)日：2024-07-23

    申请号：US18072335

    申请日：2022-11-30

    Applicant: Nextracker LLC

    Inventor： Chen Li ,  Yang Liu ,  Alexander W. Au

    IPC: H02S20/32 ,  H02S40/38 ,  H02S50/10 ,  B62D5/00 ,  F24S25/12 ,  F24S30/425

    CPC classification number: H02S20/32 ,  H02S40/38 ,  H02S50/10 ,  B62D5/005 ,  F24S25/12 ,  F24S30/425

    Abstract: A solar tracking system includes a solar array, a support structure configured to support the solar array, a driveshaft coupled to the support structure, a base configured to rotatably support the driveshaft, and an articulation system coupled to the driveshaft and configured to articulate the driveshaft relative to the base. The articulation system includes a gearbox coupled to the driveshaft. The solar tracking system also includes a motor mechanically operably coupled to the gearbox to cause the driveshaft to rotate, and a controller that determines a fault caused by the winding up of the driveshaft, and, in response to determining the fault, shorting the windings of the motor and/or providing power, which is generated by the motor when the unwinding driveshaft drives the rotation of the motor, to a load, such as an energy storage device, a resistive load, and/or a heating element.

    SELF-POWERED SOLAR TRACKER APPARATUS
    9.
    发明申请
    SELF-POWERED SOLAR TRACKER APPARATUS 有权

    公开(公告)号：US20230050774A1

    公开(公告)日：2023-02-16

    申请号：US17884366

    申请日：2022-08-09

    Applicant: Nextracker LLC

    Inventor： Yang Liu ,  Alexander W. Au

    IPC: H02S20/32 ,  F24S30/425 ,  H02J7/35

    Abstract: A solar tracker apparatus includes an adjustable hanger assembly that has a clam shell hanger assembly. The clam shell hanger assembly may hold a torque tube comprising a plurality of torque tubes configured together in a continuous length from a first end to a second end. A center of mass of the solar tracker apparatus may be aligned with a center of rotation of the torque tubes, in order to reduce a load of a drive device operably coupled to the torque tube. Solar modules may be coupled to the torque tubes. The solar tracker includes an energy system that includes solar panel, a DC to DC converter, a battery, and a micro-controller. The energy system may facilitate full operation movement of the tracker apparatus without any external power lines.

    SYSTEMS AND METHODS OF DC POWER CONVERSION AND TRANSMISSION FOR SOLAR FIELDS
    10.
    发明申请
    SYSTEMS AND METHODS OF DC POWER CONVERSION AND TRANSMISSION FOR SOLAR FIELDS 有权

    公开(公告)号：US20230012720A1

    公开(公告)日：2023-01-19

    申请号：US17948878

    申请日：2022-09-20

    Applicant: Nextracker LLC

    Inventor： Alexander W. Au ,  Yang Liu

    IPC: H02J7/35 ,  H02J1/10 ,  H02S40/32 ,  H02S40/36 ,  H02S40/38 ,  H02J3/32 ,  H02J3/46 ,  H02J3/38 ,  H02J7/00

    Abstract: Systems and methods integrate advanced solar tracker, battery, inverter, and software technologies to improve performance, plant output, and costs. The systems may incorporate an advanced vanadium flow battery (VFB) that is DC-voltage (DV)-coupled to photovoltaic (PV) arrays for high, round-trip efficiency. The systems incorporate a DC architecture that optimizes performance for commercial, industrial, agricultural, and utility applications. A distributed direct current (DC) power system includes a centralized, single-stage inverter; PV arrays; maximum power point tracking (MPPT) converters coupled between the PV arrays and the centralized, single-stage inverter; batteries; and DC-DC battery converters (DCBCs) coupled to the batteries. The MPPT converters maximize solar power production by the PV arrays and minimize mismatch between the PV arrays. The DCBCs manage charge and discharge of the batteries, enable the interconnection of the PV arrays and the batteries, and supply a constant medium voltage to the central inverter.

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