NZ795716B2

NZ795716B2 - Photovoltaic system and associated use

Info

Publication number: NZ795716B2
Application number: NZ795716A
Authority: NZ
Inventors: Robert Baldy; Thomas Brill; Heiko Hildebrandt; Markus Probst; Nicolai Zwosta
Original assignee: Sun Gmbh
Filing date: 2017-12-20
Publication date: 2025-09-30

Abstract

Disclosed is a PV system (1) comprising vertical PV modules, more particularly bifacial PV modules (2). In order to achieve an economical and energy-efficient use of said PV system and more particularly to prevent, to a great extent, shading of the PV modules (2), the invention proposes a support construction (3) that is easy to manufacture and assemble and that is composed of vertical posts (4) interconnected at intersection points and cross-members (5) running horizontally. Holding surfaces (10) designed as tabs (13) predetermined by the shape of the associated opening (14) in the respective post (4) and/or flanges (11) are formed on the respective post, and an associated one of the cross-members is flatly securable to the respective holding surface so that rectangular assembly fields (6) for the individual PV modules (2) can be provided. The invention addresses the problems of using two sides of the PV module and also providing a structure which can appropriately support the PV modules in use.

Claims

1. A photovoltaic (PV) system, comprising: a supporting structure; a plurality of bifacial PV modules arranged upright on the supporting structur e; 5 the supporting structure includes a plurality of posts which are configured to be directly secured on or in the ground, crossmembers secured to the posts, said crossmembers in each case connecting two adjacent posts to each other, and in each case two of the posts and two 10 of the crossmembers define a substantially rectangular mounting area in which at least one PV module is arranged, n - the posts are formed by longitudinal profiles, - wherein holding surfaces are formed on the posts, and 15 an associated one of the cross-members is flatly securable to the respective holding surface, - wherein the embers are ed to be narro wer than the posts, - wherein the holding surfaces are ed 20 - as flanges on one of said profiles, wherein the respective flange is part of said profile and/or - as tabs on a respective opening of said profiles, wherein the respective shape of said tabs is predetermined by the shape of the associated 25 opening in the respective e, and - wherein the flanges and/or tabs run in the direct ion of and offset to a plane formed by the PV modules, and - wherein respective outer edges of the tive posts, which extend in the longitudinal ion o f the 30 posts, are spaced further from said plane of the PV modules than the respective flange or the respective

2. The photovoltaic system as claimed in claim 1, w herein 35 the posts are oriented substantially ally and/or the crossmembers are oriented substantially horizontally, and/or n a plurality of PV modules are arranged one above another in the vertical direction. 5

3. The photovoltaic system as claimed in claim 2, wherein up to four PV modules are arranged one above another in the vertical direction.

4. The photovoltaic system as claimed in any one of the preceding claims, wherein the posts are d at least 10 into a securing section which is ted to the ground and a holding section which is connectable or is connected thereto and extends above the securing section, and/or wherein horizontally adjacent PV modules are arranged offset with respect to one another in the 15 al direction.

5. The photovoltaic system as claimed in any one of the ing claims, wherein active surfaces of the PV modules are arranged at a distance from the posts and/or crossmembers such that g of the active surface by 20 means of posts and/or crossmembers is prevented.

6. The photovoltaic system as d in claim 5, wherein active surfaces of the PV modules are arranged at a distance from the posts at least up to an angle of incidence of 20° such that shading of the active su rface 25 by means of posts is prevented.

7. The photovoltaic system as claimed in claim 5 or 6, wherein active surfaces of the PV modules are arranged at a distance from the posts at least up to an angle of incidence of 30° such that shading of the active su rface 30 by means of posts is prevented.

8. The oltaic system as claimed in any one of claims 5 to 7, wherein active surfaces of the PV modules are arranged at a distance from the crossmembers at least up to an angle of incidence of 25° such that g of the 5 active surface by means of crossmembers is prevented.

9. The photovoltaic system as claimed in any one of claims 5 to 8, wherein active surfaces of the PV modules are arranged at a distance from the embers at least up to an angle of nce of 30° such that shading of the 10 active surface by means of crossmembers is prevented.

10. The photovoltaic system as claimed in any one of claims 5 to 9, wherein active surfaces of the PV modules are arranged at a distance from the crossmembers at least up to an angle of incidence of 40° such that shading of the 15 active e by means of crossmembers is prevented.

11. The photovoltaic system as claimed in any one of the preceding claims, n the active surfaces of the PV modules on mutually opposite sides are arranged asymmetrically at a distance from posts and/or 20 crossmembers, and/or wherein the PV modules are suspended on the supporting structure so as to be pivotable about an axis of rotation.

12. The oltaic system as claimed in claim 11, wherein the axis of rotation runs approximately parallel to the 25 crossmembers.

13. The photovoltaic system as claimed in any one of the preceding claims, wherein the holding surfaces are formed in pairs in order to grip a crossmember, which has been pushed between the holding surfaces, on bo th 30 sides, and/or wherein the crossmembers are designed to be narrower than a ce n holding surfaces formed in pairs.

14. The photovoltaic system as claimed in any one of the 5 preceding claims, wherein plug-through openings are formed on the posts in order in each case to accommodate a crossmember or an end thereof.

15. The photovoltaic system as claimed in claim 14, wherein at least one of the posts or the holding section of the 10 posts is designed in the form of an omega profile.

16. The photovoltaic system as claimed in claims 14 or 15, wherein two crossmembers are placed in a plug-through opening, or in that only one crossmember is placed in a plug-through opening while a further crossmember is mounted on a side of the post which lies opposite t he 15 plug-through opening and does not have a plug-through opening and by means of holding surfaces formed on the post.

17. The photovoltaic system as claimed in claim 16, wherein a crossmember plugged h a plug-through openin g and 20 a further crossmember are secured on a g surface

18. The photovoltaic system as claimed in any one of the preceding claims, wherein the posts have a profile with a C-shaped, U-shaped, Z-shaped or S-shaped basic shape, at least in the or a g n. 25

19. The photovoltaic system as claimed in claim 18, wherein additional holding surfaces are designed as flanges at the ends of the e.

20. The photovoltaic system as claimed in any one of the preceding claims, wherein the PV s are secured to the crossmembers, wherein, for this purpose, holding elements are provided.

21. The photovoltaic system as claimed in claim 20, wherein the holding elements provide groove sections into w hich 5 a border of the tive PV module is d or is pluggable.

22. The oltaic system as claimed in claim 20 or 21, wherein the g element has two opposite groove sections, and/or wherein the crossmembers have a bevel 10 on a lower side.

23. The oltaic system as claimed in any one of claims 20 to 22, wherein the holding elements each have a cross-sectional tapered portion such that a holding 15 element is pluggable or plugged into a plug-through opening, which is formed on a crossmember, as far as a defined plug-in depth.

24. The photovoltaic system as claimed in claim 23, wherein a contact e is formed on the holding element, by which contact surface the holding element lies flat ly 20 against the crossmember.

25. The photovoltaic system as claimed in any one of the preceding claims, wherein an open space is kept free between the ground and a lowermost crossmember.

26. The photovoltaic system as claimed in claim 25, wherein 25 the open space has a height of at least 50 cm, at least 60 cm, or at least 1 m.

27. The photovoltaic system as claimed in claim 25 or 26, wherein rows of the PV system are arranged at a distance in such a manner that there is an open cultivation space having a width of at least 6 meters, at least 8 meters or at least 10 meters n the rows.

28. The photovoltaic system as claimed in any one of the preceding claims, wherein the PV s substantially 5 form a plane with the supporting structure, and/or wherein the PV modules are arranged in a plurality of -apart rows, wherein the PV modules of one row substantially form a plane.

29. The photovoltaic system as claimed in claim 28, wherein 10 a distance between two rows is at least three times a maximum height of an active surface of the PV system.

30. The photovoltaic system as claimed in claim 29, wherein the distance between two rows is at least four times a maximum height of an active surface of the PV syste m. 15

31. The photovoltaic system as claimed in claim 29 or 30, wherein the distance n two rows is at least five times a maximum height of an active surface of the PV system. 20

32. The photovoltaic system as claimed in claim 1, ntially as herein described with reference to any one of the examples and/or