Systems for and methods of positioning solar panels in an array of solar panels with spectrally adjusted irradiance tracking

Patent metadata

Field	Value
Publication number	US-11914404-B2
Application number	US-201917268939-A
Country	US
Kind code	B2
Filing date	Aug 28, 2019
Priority date	Aug 28, 2018
Publication date	Feb 27, 2024
Grant date	Feb 27, 2024

Abstract

A solar tracking system comprises multiple solar panel modules forming a grid of solar panel modules, wherein the multiple solar panel modules are movable relative 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.

First claim

What is claimed is:

1. A solar tracker system, comprising:
multiple rows of rotatable solar panel modules forming a grid of solar panel modules, wherein the multiple rows of rotatable solar panel modules are movable relative to a solar source independently of each other;
a control system configured to orient each of the multiple rows of 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 an orientation of each of the multiple rows of solar panel modules to the solar source and first data comprising weather conditions local to each of the multiple rows of solar panels;
a DHI-GHI module;
a diffuse angle adjustor; and
a weather look-up module, the weather look-up module in communication with the DHI-GHI module and providing weather data to the DHI-GHI module and the diffuse angle adjustor;
wherein the control system orients each of the multiple rows of solar panel modules also based on data generated by the DHI-GHI module and the diffuse angle adjustor.

2. The solar tracking system of claim 1 , wherein the control system orients one or more of the multiple rows of solar panel modules to a position where it generates less than the maximum energy it could in consideration of the instant position of the sun.

3. The solar tracking system of claim 2 , wherein the position of the one or more multiple rows of solar panel modules is determined to eliminate shading of the multiple rows of solar panels.

4. The solar tracking system of claim 1 , wherein the control system includes a self-powered controller.

5. The solar tracking system of claim 1 , wherein the control system further includes at least one network control unit in wireless communication with at least one of the multiple rows of rotatable solar panel modules.

6. The solar tracking system of claim 1 , wherein the control system further includes a plurality of network control units each in wireless communication with at least one of the multiple rows of rotatable solar panel modules, the plurality of network control units in communication with each other and forming a mesh network.

7. The solar tracking system of claim 1 , wherein the control system further includes a plurality of self-powered controllers (SPC) and a plurality of network control units (NCU) in wireless communication with each other, the SPCs providing the NCUs real time information regarding shading experienced by the SPCs.

8. The solar tracking system of claim 7 , further comprising a remote host, wherein the remote host receives communications from the control system.

9. The solar tracking system of claim 8 , wherein the remote host retrieves the weather conditions and generates the performance model.

10. The solar tracking system of claim 9 , wherein the performance model is based on one or more of direct normal irradiance (DNI), global horizontal irradiance (GHI), or diffuse horizontal irradiance (DHI).

11. The solar tracking system of claim 9 , wherein the performance model is based on the topology of the grid of solar panel modules.

12. The solar tracking system of claim 9 , wherein the weather conditions include forecasted weather and instantaneous weather.

13. The solar tracking system of claim 9 , wherein the performance model is executed by a Supervisory Control and Data Acquisition (SCADA) device.

14. The solar tracking system of claim 13 , wherein the SCADA includes a topology module of the grid of solar panel modules.

15. The solar tracking system of claim 14 , wherein the SCADA includes a row-to-rowtracking module.

16. The solar tracking system of claim 15 , wherein the row-to-row tracking module is in communication with the diffuse angle adjustor and the diffuse angle adjustor receives target tracking angles data from the row-to-row tracking module.

17. The solar tracking system of claim 14 , wherein the SCADA includes the DHI-GHI module.

18. The solar tracking system of claim 7 , wherein the diffuse angle adjustor is in communication with an SPC.

19. The solar tracking system of claim 14 , wherein the SCADA further includes a local sensor data module in communication with an NCU local sensor to provide local sensor data from the grid of solar panel modules.

Assignees

• Nextracker Llc

Inventors

• Ma Yudong
• Borrelli Francesco
• Liu Yang
• Daly Allan

Classifications

• G05D3/105 Primary

  Solar tracker · CPC title

• G01S3/7861

  Solar tracking systems · CPC title

• H02S20/32

  specially adapted for solar tracking · CPC title

• H02S40/38

  Energy storage means, e.g. batteries, structurally associated with PV modules · CPC title

• G01W1/00

  Meteorology · CPC title