公开(公告)号：US12158289B2

公开(公告)日：2024-12-03

申请号：US18365614

申请日：2023-08-04

Applicant: NEXTracker LLC

Inventor： Yu Dong Ma ,  Yang Liu ,  Francesco Borrelli ,  Allan Daly ,  Ricardo Delgado-Nanez ,  Alexander W. Au

IPC: F24S30/422 ,  F24S25/10 ,  F24S30/425 ,  F24S20/00 ,  F24S30/00 ,  H02S20/10

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.

公开(公告)号：US20240348199A1

公开(公告)日：2024-10-17

申请号：US18752249

申请日：2024-06-24

Applicant: Nextracker LLC

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

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

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.

公开(公告)号：US12085658B2

公开(公告)日：2024-09-10

申请号：US17944043

申请日：2022-09-13

Applicant: Nextracker LLC

Inventor： Yudong Ma ,  Francesco Borrelli ,  Allan Daly ,  Yang Liu

IPC: H02S20/32 ,  G01S3/786 ,  G05D3/10 ,  H02S40/20

CPC classification number: G01S3/7861 ,  G05D3/105 ,  H02S20/32 ,  H02S40/20

Abstract: A solar tracking system comprises multiple solar panel modules forming a grid of solar panel modules, wherein the multiple solar panel modules are orientatable to a solar source independently of each other; and a control system configured to orient each of the multiple solar panel modules to the solar source independently of each other based on a performance model to optimize an energy output from the grid of solar panel modules, wherein the performance model predicts an energy output from the grid of solar panel modules based on a topography of the area containing the grid of solar panel modules and weather conditions local to each of the solar panel modules.

公开(公告)号：US11996800B2

公开(公告)日：2024-05-28

申请号：US17115595

申请日：2020-12-08

Applicant: NEXTracker LLC

Inventor： Yang Liu ,  Chen Li

IPC: H02S20/32 ,  G01S3/781 ,  G01S3/782 ,  G05D3/10 ,  G05D3/20 ,  G06N20/00

CPC classification number: H02S20/32 ,  G01S3/781 ,  G01S3/782 ,  G05D3/105 ,  G05D3/20 ,  G06N20/00

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.

公开(公告)号：US20240030725A1

公开(公告)日：2024-01-25

申请号：US18481635

申请日：2023-10-05

Applicant: Nextracker LLC

Inventor： Yang Liu

IPC: H02J7/00 ,  G05B19/045 ,  H02J3/38

CPC classification number: H02J7/0018 ,  G05B19/045 ,  H02J3/38 ,  H02J3/381 ,  G05B2219/25361 ,  G05B2219/24136 ,  H02J2300/26

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.

公开(公告)号：US20230396091A1

公开(公告)日：2023-12-07

申请号：US18451142

申请日：2023-08-17

Applicant: NEXTRACKER LLC

Inventor： Chen Li ,  Yang Liu ,  Jonathan Kenzo Kamei

IPC: H02J7/04 ,  H02J7/35 ,  H02J7/00 ,  H01M8/04858 ,  H01M4/36 ,  H01M8/18

CPC classification number: H02J7/04 ,  H02J7/35 ,  H02J7/0068 ,  H01M8/04902 ,  H01M4/368 ,  H01M8/188 ,  H02S20/32

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.

公开(公告)号：US11739986B2

公开(公告)日：2023-08-29

申请号：US17185916

申请日：2021-02-25

Applicant: Nextracker LLC.

Inventor： Yu Dong Ma ,  Yang Liu ,  Francesco Borrelli ,  Allan Daly ,  Ricardo Delgado-Nanez ,  Alexander W. Au

IPC: F24S30/422 ,  F24S25/10 ,  F24S30/425 ,  H02S20/10 ,  F24S20/00 ,  F24S30/00

CPC classification number: F24S30/422 ,  F24S25/10 ,  F24S30/425 ,  F24S2020/16 ,  F24S2030/136 ,  F24S2030/19 ,  H02S20/10

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.