Methods and systems for designing photovoltaic systems

• US 9,589,079 B2
• Filed: 11/17/2014
• Issued: 03/07/2017
• Est. Priority Date: 11/17/2014
• Status: Active Grant

• Current Assignee: FTC Solar, Inc.
• Original Assignee: SunEdison, Inc.
• Inventors: Morse, Andrew Joseph, Cherukupalli, Nagendra Srinivas, Ranganathan, Ravi, Ramagopal, Krishnan
• Primary Examiner(s): TAT, BINH C
• Application Number:
  US14/543,546
• Publication Number:
  US 20160140258A1
• Time in Patent Office: 841 Days
• Field of Search: 716118-125
• US Class Current: 1/1
• CPC Class Codes: G06F 30/13 Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
• CPC Class Codes: G06F 30/20 Design optimisation, verification or simulation optimisation, verification or simulation of circuit designs G06F30/30
• CPC Class Codes: G06F 30/398 Design verification or optimisation, e.g. using design rule check [DRC], layout versus schematics [LVS] or finite element methods [FEM] optical proximity correction [OPC] design processes G03F1/36
• CPC Class Codes: G06Q 10/04 Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem" market predictions or forecasting for commercial activities G06Q30/0202
• CPC Class Codes: G06Q 50/06 Energy or water supply

Abstract

A method for designing a photovoltaic (PV) system is implemented by a design automation computer system. The method includes receiving a set of site data, receiving a system type selection, receiving a plurality of system component selections, receiving a plurality of PV layout preferences, determining a PV module layout by iteratively applying a first layout algorithm to the set of site data and the plurality of PV layout preferences, the PV module layout defining a placement of a plurality of PV modules of a PV system, determining a structural layout, an electrical design, and an electrical layout based on the PV module layout, determining a bill of materials based on the PV module layout, the structural layout, and the electrical layout, and designing the PV system using the structural layout, the electrical design, the electrical layout, the PV module layout, and the bill of materials.

Claims

1. A computer-implemented method for designing a photovoltaic (PV) system, the method implemented by a design automation computer system in communication with a memory, the method comprising:

receiving a set of site data, wherein the site data includes a set of location identifiers;

determining a set of location design characteristics based on the set of site data;

retrieving a set of structural product rules;

identifying a subset of structural product rules associated with the set of location design characteristics;

receiving a system type selection;

receiving a plurality of system component selections;

receiving a plurality of PV layout preferences;

determining, at the design automation computer system, a PV module layout by iteratively applying a first layout algorithm to the set of site data and the plurality of PV layout preferences, the PV module layout defining a placement of a plurality of PV modules of a PV system;

determining a structural layout, an electrical design, and an electrical layout based on the PV module layout;

refining the structural layout based on the subset of structural product rules;

determining a bill of materials based on the PV module layout, the structural layout, and the electrical layout;

defining a PV system model using the structural layout, the electrical design, the electrical layout, the PV module layout, and the bill of materials; and

displaying at least a portion of the PV system model on a visual display.

2. The method of claim 1, further comprising:

receiving a set of boundary offsets associated with the set of site data;

receiving a set of obstruction definitions associated with the set of site data, the set of obstruction definitions including a set of obstruction heights and a set of obstruction offsets;

determining a set of shadow setbacks based on the set of obstruction definitions; and

determining the PV module layout based on the set of shadow setbacks such that the shadow setbacks define a plurality of regions where the plurality of PV modules cannot be placed.

3. The method of claim 2, wherein determining the set of shadow setbacks further comprises:

identifying a set of obstructions based on the set of obstruction definitions;

projecting a set of shadows for a plurality of time periods based on the set of obstructions and a projected sun location for each of the plurality of time periods; and

integrating the set of shadows into an integrated shadow setback area.

4. The method of claim 1, wherein receiving the plurality of system component selections further comprises:

providing a plurality of first component options to a user device based on a component library;

receiving a first component selection corresponding to one of the plurality of first component options, from the user device;

retrieving, from the component library, a plurality of second component options associated with the first component selection;

providing the plurality of second component options to the user device; and

receiving a second component selection corresponding to one of the plurality of second component options, from the user device.

5. The method of claim 1, wherein receiving the system type selection further comprises:

receiving one of a parking canopy type selection, a ground mount type selection, and a rooftop type selection;

providing the plurality of system component selections based on the system type selection; and

receiving the plurality of PV layout preferences based on the system type selection.

6. The method of claim 1, further comprising:

determining an energy simulation, a cost estimation, and a profitability analysis based on the completed PV system design, and the bill of materials.

7. The method of claim 1, further comprising:

identifying a plurality of strings in the PV module layout;

identifying a plurality of inverters in the PV module layout; and

assigning each of the plurality of strings in the PV module layout to an associated inverter of the plurality of inverters.

8. The method of claim 1, further comprising:

identifying a plurality of electrical properties associated with the PV module layout;

identifying a plurality of meteorological data associated with the location identifiers; and

determining a recommended string size based on the plurality of meteorological data and the plurality of electrical properties.

9. A design automation computer system used to design a photovoltaic (PV) system, the design automation computer system comprising:

a processor; and

a memory coupled to said processor, said processor configured to;

receive a set of site data, wherein the site data includes a set of location identifiers;

determining a set of location design characteristics based on the set of site data;

retrieving a set of structural product rules;

identifying a subset of structural product rules associated with the set of location design characteristics;

receive a system type selection;

receive a plurality of system component selections;

receive a plurality of PV layout preferences;

determine a PV module layout by iteratively applying a first layout algorithm to the set of site data and the plurality of PV layout preferences, the PV module layout defining a placement of a plurality of PV modules of a PV system;

determine a structural layout, an electrical design, and an electrical layout based on the PV module layout;

refining the structural layout based on the subset of structural product rules;

determine a bill of materials based on the PV module layout, the structural layout, and the electrical layout;

define a PV system model using the structural layout, the electrical design, the electrical layout, the PV module layout, and the bill of materials; and

displaying at least a portion of the PV system model on a visual display.

10. The design automation computer system of claim 9, further configured to:

receive a set of boundary offsets associated with the set of site data;

receive a set of obstruction definitions associated with the set of site data, the set of obstruction definitions including a set of obstruction heights and a set of obstruction offsets;

determine a set of shadow setbacks based on the set of obstruction definitions; and

determine the PV module layout based on the set of shadow setbacks such that the shadow setbacks define a plurality of regions where the plurality of PV modules cannot be placed.

11. The design automation computer system of claim 10, further configured to:

identify a set of obstructions based on the set of obstruction definitions;

project a set of shadows for a plurality of time periods based on the set of obstructions and a projected sun location for each of the plurality of time periods; and

integrate the set of shadows into an integrated shadow setback area.

12. The design automation computer system of claim 9, further configured to:

provide a plurality of first component options to a user device based on a component library;

receive a first component selection corresponding to one of the plurality of first component options, from the user device;

retrieve, from the component library, a plurality of second component options associated with the first component selection;

provide the plurality of second component options to the user device; and

receive a second component selection corresponding to one of the plurality of second component options, from the user device.

13. The design automation computer system of claim 9, further configured to:

receive one of a parking canopy type selection, a ground mount type selection, and a rooftop type selection;

provide the plurality of system component selections based on the system type selection; and

receive the plurality of PV layout preferences based on the system type selection.

14. The design automation computer system of claim 9, further configured to:

determine an energy simulation, a cost estimation, and a profitability analysis based on the structural layout, the electrical design, the electrical layout, the PV module layout, and the bill of materials.

15. The design automation computer system of claim 9, further configured to:

identify a plurality of strings in the PV module layout;

identify a plurality of inverters in the PV module layout; and

assign each of the plurality of strings in the PV module layout to an associated inverter of the plurality of inverters.

16. The design automation computer system of claim 9, further configured to:

identify a plurality of electrical properties associated with the PV module layout;

identify a plurality of meteorological data associated with the location identifiers; and

determine a recommended string size based on the plurality of meteorological data and the plurality of electrical properties.

17. Non-transitory computer-readable storage media for designing a photovoltaic (PV) system, the computer-readable storage media having computer-executable instructions embodied thereon, wherein, when executed by at least one processor, the computer-executable instructions cause the processor to:

receive a set of site data, wherein the site data includes a set of location identifiers;

determining a set of location design characteristics based on the set of site data;

retrieving a set of structural product rules;

identifying a subset of structural product rules associated with the set of location design characteristics;

receive a system type selection;

receive a plurality of system component selections;

receive a plurality of PV layout preferences;

determine a PV module layout by iteratively applying a first layout algorithm to the set of site data and the plurality of PV layout preferences, the PV module layout defining a placement of a plurality of PV modules of a PV system;

determine a structural layout, an electrical design, and an electrical layout based on the PV module layout;

refining the structural layout based on the subset of structural product rules;

determine a bill of materials based on the PV module layout, the structural layout, and the electrical layout;

define a PV system model using the structural layout, the electrical design, the electrical layout, the PV module layout, and the bill of materials; and

displaying at least a portion of the PV system model on a visual display.

18. The computer-readable storage media in accordance with claim 17, wherein the computer-executable instructions cause the processor to:

receive a set of boundary offsets associated with the set of site data;

receive a set of obstruction definitions associated with the set of site data, the set of obstruction definitions including a set of obstruction heights and a set of obstruction offsets;

determine a set of shadow setbacks based on the set of obstruction definitions; and

determine the PV module layout based on the set of shadow setbacks such that the shadow setbacks define a plurality of regions where the plurality of PV modules cannot be placed.

19. The computer-readable storage media in accordance with claim 18, wherein the computer-executable instructions cause the processor to:

identify a set of obstructions based on the set of obstruction definitions;

project a set of shadows for a plurality of time periods based on the set of obstructions and a projected sun location for each of the plurality of time periods; and

integrate the set of shadows into an integrated shadow setback area.

20. The computer-readable storage media in accordance with claim 17, wherein the computer-executable instructions cause the processor to:

provide a plurality of first component options to a user device based on a component library;

receive a first component selection corresponding to one of the plurality of first component options, from the user device;

retrieve, from the component library, a plurality of second component options associated with the first component selection;

provide the plurality of second component options to the user device; and

receive a second component selection corresponding to one of the plurality of second component options, from the user device.

21. The computer-readable storage media in accordance with claim 17, wherein the computer-executable instructions cause the processor to:

receive one of a parking canopy type selection, a ground mount type selection, and a rooftop type selection;

provide the plurality of system component selections based on the system type selection; and

receive the plurality of PV layout preferences based on the system type selection.

22. A computer-implemented method for constructing a photovoltaic (PV) system, the method implemented by a design automation computer system in communication with a memory, the method comprising:

receiving a set of site data, wherein the site data includes a set of location identifiers;

determining a set of location design characteristics based on the set of site data;

retrieving a set of structural product rules;

identifying a subset of structural product rules associated with the set of location design characteristics;

receiving a system type selection;

receiving a plurality of system component selections;

receiving a plurality of PV layout preferences;

determining, at the design automation computer system, a PV module layout by iteratively applying a first layout algorithm to the set of site data and the plurality of PV layout preferences, the PV module layout defining a placement of a plurality of PV modules of a PV system;

determining a structural layout, an electrical design, and an electrical layout based on the PV module layout;

refining the structural layout based on the subset of structural product rules;

determining a bill of materials based on the PV module layout, the structural layout, and the electrical layout;

creating a plurality of PV system options using the structural layout, the electrical design, the electrical layout, the PV module layout, and the bill of materials;

providing the plurality of PV system options to a user device for display on a visual display of the user device;

receiving a PV system selection corresponding to one of the plurality of PV system options; and

constructing the PV system based on the PV system selection.