Enhanced solar panels, liquid delivery systems and associated processes for solar energy systems

• US 10,250,184 B2
• Filed: 09/23/2016
• Issued: 04/02/2019
• Est. Priority Date: 08/14/2009
• Status: Active Grant

• Current Assignee: Accurate Solar Power, Llc
• Original Assignee: Accurate Solar Power, Llc
• Inventors: Newdoll, Ronald M., Shaver, II, Argil E.
• Primary Examiner(s): Ko, Jason Y
• Assistant Examiner(s): Tate-Sims, Cristi J
• Application Number:
  US15/275,251
• Publication Number:
  US 20170012575A1
• Time in Patent Office: 921 Days
• Field of Search: None
• CPC Class Codes: B08B 3/024 Cleaning by means of spray elements moving over the surface to be cleaned
• CPC Class Codes: B08B 3/04 Cleaning involving contact with liquid
• CPC Class Codes: F24S 40/20 Cleaning; Removing snow
• CPC Class Codes: H01L 31/02021 for solar cells electrical connection means, e.g. junction boxes, specially adapted for structural association with photovoltaic modules H02S40/34
• CPC Class Codes: H01L 31/0481 characterised by the composition of the encapsulation material
• CPC Class Codes: H01L 31/0521 using a gaseous or a liquid coolant, e.g. air flow ventilation, water circulation
• CPC Class Codes: H02S 40/10 Cleaning arrangements
• CPC Class Codes: H02S 40/32 comprising DC/AC inverter means associated with the PV module itself, e.g. AC modules
• CPC Class Codes: H02S 40/425 using a gaseous or a liquid coolant, e.g. air flow ventilation, water circulation
• CPC Class Codes: H02S 50/00 Monitoring or testing of PV systems, e.g. load balancing or fault identification
• CPC Class Codes: H02S 50/10 Testing of PV devices, e.g. of PV modules or single PV cells testing of semiconductor devices during manufacturing H01L22/00
• CPC Class Codes: Y02E 10/40 Solar thermal energy, e.g. solar towers
• CPC Class Codes: Y02E 10/50 Photovoltaic [PV] energy

Abstract

Fluid delivery systems and related structures and processes are provided, such as for use with water, treated water, and/or a cleaning solution, for any of cleaning, cooling or any combination thereof, for one or more solar panels in a power generation environment. Enhanced coatings are provided for the incident surface of solar panels, such as to avoid build up of dirt, scale, or other contaminants, and/or to improve cleaning performance. Reclamation, filtration, and reuse structures are preferably provided for the delivered fluid, and seal structures may preferably be implemented between adjoining panels, to minimize loss of the delivered water or cleaning solution.

Claims

1. A power generation system, comprising:

a server;

a plurality of solar power panels, each comprising;

a plurality of DC power cells, and

a control module comprising input connections connected to the plurality of DC power cells, output connections, a signal processing circuit connected to the input connections and to the output connections, and a controller connected to the signal processing circuit, wherein the control module is configured to track one or more operating parameters for a corresponding solar power panel, and to send a data signal to the server, wherein the data signal corresponds to the one or more tracked operating parameters;

at least one inverter having input DC terminals, output AC terminals, and an inverter circuit connected to the input DC terminals and output AC terminals; and

a fluid delivery mechanism configured to distribute a liquid over an outer surface of at least a portion of the plurality of solar power panels;

wherein the server is configured to monitor an efficiency and a temperature of one or more of the plurality of solar power panels based upon the received data signals, and to send a respective control signal to the fluid delivery mechanism when each of;

the monitored efficiency is less than or equal to an efficiency setpoint, or

the monitored temperature exceeds a temperature setpoint; and

wherein the fluid delivery mechanism is controllably activated upon receipt of the control signal sent when the monitored efficiency is less than or equal to the efficiency setpoint or the monitored temperature exceeds the temperature setpoint.

2. The power generation system of claim 1, wherein the fluid delivery mechanism is activated for any of cleaning or cooling of the plurality of solar power panels.

3. The power generation system of claim 1, wherein the liquid comprises water.

4. The power generation system of claim 3, wherein the liquid further comprises a cleaning solution.

5. The power generation system of claim 1, wherein the plurality of solar power panels has an upper incident surface for receiving incoming light, and wherein any of a hydrophilic layer or a hydrophobic layer is applied to the upper incident surface of one or more of the plurality of solar power panels.

6. The power generation system of claim 5, wherein the hydrophilic layer comprises titanium oxide.

7. The power generation system of claim 5, wherein the hydrophobic layer comprises any of silicon oxide or a fluoropolymer.

8. The power generation system of claim 1, wherein the plurality of solar power panels has an upper incident surface for receiving incoming light, and wherein an interference layer is applied to the upper incident surface of one or more of the plurality of solar power panels to promote light penetration through the upper incident surface.

9. The power generation system of claim 1, wherein the tracked operating parameters comprise any of temperature, voltage, or power.

10. The power generation system of claim 1, further comprising:

a recovery system for collecting and storing at least a portion of the distributed liquid.

11. The power generation system of claim 10, wherein the recovery system further comprises a filter for filtering the collected distributed liquid.

12. The power generation system of claim 1, further comprising:

a seal located between at least two of the plurality of solar power panels.

13. A power generation system, comprising:

a server;

a plurality of solar power panels, each comprising;

a plurality of DC power cells, and

a control module comprising input connections connected to the plurality of DC power cells, output connections, a signal processing circuit connected to the input connections and to the output connections, and a controller connected to the signal processing circuit, wherein the control module is configured to track one or more operating parameters for a corresponding solar power panel, and to send a data signal to the server, wherein the data signal corresponds to the one or more tracked operating parameters;

at least one inverter having input DC terminals, output AC terminals, and an inverter circuit connected to the input DC terminals and output AC terminals; and

a fluid delivery mechanism configured to distribute a liquid over an outer surface of at least a portion of the plurality of solar power panels;

wherein the server is configured to monitor a temperature of one or more of the plurality of solar power panels based upon the received data signals, and to send a control signal to the fluid delivery mechanism when the monitored temperature exceeds a temperature setpoint; and

wherein the fluid delivery mechanism is controllably activated upon receipt of the control signal sent when the monitored temperature exceeds the temperature setpoint.

14. The power generation system of claim 13, wherein the fluid delivery mechanism is activated for cooling of the plurality of solar power panels.

15. The power generation system of claim 13, wherein the liquid comprises water.

16. The power generation system of claim 13, wherein the plurality of solar power panels has an upper incident surface for receiving incoming light, and wherein any of a hydrophilic layer or a hydrophobic layer is applied to the upper incident surface of one or more of the plurality of solar power panels.

17. The power generation system of claim 16, wherein the hydrophilic layer comprises titanium oxide.

18. The power generation system of claim 16, wherein the hydrophobic layer comprises any of silicon oxide or a fluoropolymer.

19. The power generation system of claim 13, wherein the plurality of solar power panels has an upper incident surface for receiving incoming light, and wherein an interference layer is applied to the upper incident surface of one or more of the plurality of solar power panels to promote light penetration through the upper incident surface.

20. A power generation system, comprising:

a server;

a plurality of solar power panels, each comprising;

a plurality of DC power cells, and

a control module comprising input connections connected to the plurality of DC power cells, output connections, a signal processing circuit connected to the input connections and to the output connections, and a controller connected to the signal processing circuit, wherein the control module is configured to track one or more operating parameters for a corresponding solar power panel, and to send a data signal to the server, wherein the data signal corresponds to the one or more tracked operating parameters;

at least one inverter having input DC terminals, output AC terminals, and an inverter circuit connected to the input DC terminals and output AC terminals; and

a fluid delivery mechanism configured to distribute a liquid over an outer surface of at least a portion of the plurality of solar power panels;

wherein the server is configured to monitor an efficiency and a temperature of one or more of the plurality of solar power panels based upon the received data signals, and to send a control signal to the fluid delivery mechanism when;

the monitored efficiency is less than or equal to an efficiency setpoint, or

the monitored temperature exceeds a temperature setpoint; and

wherein the fluid delivery mechanism is controllably activated upon receipt of the control signal to clean the plurality of solar power panels when the monitored efficiency is less than or equal to the efficiency setpoint and to cool the plurality of solar power panels when the monitored temperature exceeds the temperature setpoint.