公开(公告)号：US20190334349A1

公开(公告)日：2019-10-31

申请号：US15965108

申请日：2018-04-27

Applicant: NEXTracker Inc.

Inventor： Yang Liu

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

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：US20190036478A1

公开(公告)日：2019-01-31

申请号：US16128022

申请日：2018-09-11

Applicant: NEXTracker Inc.

Inventor： Yang Liu ,  Alexander W. Au

IPC: H02S20/32 ,  H01L31/042 ,  H02S40/38 ,  H02S40/32 ,  H02S40/34

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.

公开(公告)号：US11442132B2

公开(公告)日：2022-09-13

申请号：US16629300

申请日：2018-07-06

Applicant: NEXTracker Inc.

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

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

Abstract: A solar tracking system (200) comprises multiple solar panel modules (SPMi) forming a grid of solar panel modules, wherein the multiple solar panel modules (SPMi) are orientatable to a solar source independently of each other; and a control system (SPCi) configured to orient each of the multiple solar panel modules (SPMi) 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 (SPMi).

公开(公告)号：US11411529B2

公开(公告)日：2022-08-09

申请号：US17343600

申请日：2021-06-09

Applicant: NEXTracker Inc.

Inventor： Yang Liu ,  Alexander W. Au

IPC: H02S20/32 ,  H02S40/32 ,  H02S40/38 ,  H02S40/34 ,  H01L31/042

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.

公开(公告)号：US11280522B2

公开(公告)日：2022-03-22

申请号：US17393395

申请日：2021-08-03

Applicant: NEXTracker Inc.

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

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：US20210296904A1

公开(公告)日：2021-09-23

申请号：US17202331

申请日：2021-03-15

Applicant: NEXTracker Inc.

Inventor： Yang Liu

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

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：US20210273602A1

公开(公告)日：2021-09-02

申请号：US16805798

申请日：2020-03-01

Applicant: NEXTracker Inc.

Inventor： Fei Gu ,  Yang Liu ,  Venkata Rahul Abbaraju ,  Eric Martinez

IPC: H02S20/32 ,  G05D3/10

Abstract: Split-cell and multi-panel photovoltaic backtracking control systems and methods allow for increased total power generation during low sun elevation conditions by shading a percentage of panel modules, thereby allowing for a lower angle of incidence on unshaded modules. The control systems and methods involve determining a sun elevation angle, a traditional backtracking angle, a split-cell or multi-panel backtracking angle, a single-cell or single-panel relative light transmission (RLT) based on the single-cell or single-panel backtracking angle, and a split-cell or multi-panel RLT based on the split-cell or multi-panel backtracking angle. If twice the single-cell or single-panel RLT is greater than the split-cell or multi-panel RLT, the split-cell or multi-panel backtracking angle is used; otherwise, the single-cell or single-panel backtracking angle is used. The control systems and methods may further involve determining a diffuse fraction index (DFI) and, if the DFI is greater than a DFI limit, using a DFI tracking angle.

公开(公告)号：US11101768B2

公开(公告)日：2021-08-24

申请号：US16128022

申请日：2018-09-11

Applicant: NEXTracker Inc.

Inventor： Yang Liu ,  Alexander W. Au

IPC: H02S20/32 ,  H02S40/32 ,  H02S40/38 ,  H02S40/34 ,  H01L31/042

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.

公开(公告)号：US10951040B2

公开(公告)日：2021-03-16

申请号：US15965108

申请日：2018-04-27

Applicant: NEXTracker Inc.

Inventor： Yang Liu

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

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：US10892703B2

公开(公告)日：2021-01-12

申请号：US15983718

申请日：2018-05-18

Applicant: NEXTracker Inc.

Inventor： Yang Liu ,  Chen Li

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