Flexible photovoltaic support and photovoltaic array using same
By designing a stable triangular connection structure and split fixation method, the problem of photovoltaic panel damage of flexible photovoltaic brackets in typhoon weather is solved, and wind resistance and safety are enhanced.
Patent Information
- Application Number
- CN202422069022.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-26
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-08-26
AI Technical Summary
Existing flexible photovoltaic brackets are easily blown in typhoon weather, resulting in damage to photovoltaic panels and safety hazards, and mutual squeeze between photovoltaic panels may cause damage to the equipment.
A flexible photovoltaic bracket is designed, including a support frame and a steel cable arranged left and right. The lower surface of the top plate of the mounting frame is equipped with a connecting rod to form a stable triangular structure. The top plate is fixed with the steel cable through the mounting part, the bracket is arranged separately from the base, the steel cable is fixed by the collar and the limit ring, the mounting frame is spaced to reduce resistance, and the support rod is connected to the adjacent mounting frame to enhance the overall strength.
In typhoon weather, the deformation of photovoltaic panels is effectively reduced, the photovoltaic panels are prevented from falling and colliding with each other, and the wind resistance and safety of the flexible photovoltaic bracket are improved.
Smart Images

Figure CN223246503U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of photovoltaic equipment, in particular to a flexible photovoltaic bracket and a photovoltaic array using the same. Background Art
[0002] A photovoltaic panel bracket is a bracket used to fix photovoltaic panels in a suitable position, and a photovoltaic panel flexible bracket is a row of steel cables with both ends connected by rigid columns, and the photovoltaic panels are fixed on the steel cables. This type of bracket can cross complex terrains such as gullies, steep slopes, and streams, effectively improving land utilization.
[0003] However, in areas prone to typhoons, photovoltaic panels fixed to steel cables are easily blown during typhoons. When the photovoltaic panels are blown by the typhoon, the distortion of the steel cables themselves may squeeze other photovoltaic panels installed on the cables, causing damage to the photovoltaic panels. Based on this, the utility model provides a flexible photovoltaic bracket and a photovoltaic array using the same to improve the typhoon resistance of the flexible photovoltaic bracket. Utility Model Content
[0004] 14. The photovoltaic panel mounting arrangement of claim 13, wherein the bridge has two opposite ends, and the two ends of the photovoltaic panel mounting arrangement are connected along the left and right sides of the bridge to form a circuitous bearing on the bridge.
[0005] In the utility model, the support frame of the flexible photovoltaic bracket is used as the supporting structure of the flexible photovoltaic bracket, which is used for fixed installation on the ground and plays the role of tightening and supporting the steel cable.
[0006] The two steel cables stretched between the two support frames are used for the installation and support of the photovoltaic panels, wherein the photovoltaic panels are mounted on the steel cables through the mounting frames. Specifically, the top plate of the mounting frame is mounted and fixed on the steel cables through the mounting portion on its lower surface, and the photovoltaic panels are mounted on the upper surface of the top plate, thereby realizing the installation of the photovoltaic panels on the steel cables.
[0007] In the present invention, the lower surface of the top plate for mounting photovoltaic panels is provided with connecting rods whose lower ends are fixedly connected to each other, and a plurality of stable triangular structures are formed between the connecting rods and the top plate. Therefore, the presence of the connecting rods can significantly strengthen the rigidity of the top plate. Therefore, when the photovoltaic panels are blown by the wind and the steel cables are bent and deformed, the top plate with good rigidity can reduce or even prevent the deformation of the photovoltaic panels, thereby protecting the photovoltaic panels. In addition, the mounting portion on the top plate for connecting with the steel cables is located between the front mounting area and the rear mounting area of the top plate. That is, after the mounting frame is installed on the steel cables, the steel cables will pass through the closed loop structure enclosed by the connecting rods and the top plate. Therefore, in typhoon weather, if the connection structure between the mounting frame and the steel cables is damaged, the restraint of the steel cables on the closed loop structure can still prevent the mounting frame and the photovoltaic panels from falling off the steel cables. While preventing the photovoltaic panels from being damaged, it can also effectively prevent the mounting frame and the photovoltaic panels thereon from hitting people or objects below, thereby effectively improving the safety of the flexible photovoltaic bracket.
[0008] Furthermore, the support frame includes two brackets arranged corresponding to the two steel cables, and the two brackets are arranged in front and behind; the support frame also includes a base arranged corresponding to the bracket, and the base is located on the side of its corresponding bracket away from the other support frame. A ring is fixedly provided on the top of the bracket, and the steel cable passes through the ring and is fixedly connected to the corresponding base. The base and the corresponding bracket are arranged separately.
[0009] In the present invention, the fixed connection structure between the steel cable and the support frame is: the end of the steel cable passes through the ring on the bracket and is fixedly connected to the corresponding base, wherein the base and the bracket are separately arranged, the base plays a role in fixing the steel cable, and the bracket plays a role in supporting the steel cable. Since the base and the bracket are respectively fixedly installed on the ground using a split structure, the fixing and supporting effect of the support frame on the steel cable can be effectively increased.
[0010] Furthermore, a connecting block is fixedly provided on the base, and connecting holes are provided on the connecting block to pass through it on the left and right sides. A connecting screw is inserted into the connecting hole, and a connecting ring is fixedly provided on the connecting screw at one end facing the bracket. The steel cable is connected to the connecting screw through the connecting ring, and two nuts are also provided on the connecting screw, and the two nuts are respectively located on the left and right sides of the connecting block and abut against the connecting block.
[0011] In the utility model, the steel cable is fixedly connected to the base through a connecting screw, wherein the left and right positions of the connecting screw can be adjusted by adjusting the two nuts on the connecting screw, thereby facilitating the tightening of the steel cable and adjusting the tension of the steel cable. After the installation of the steel cable is completed, the prestressing of the steel cable can be conveniently applied. It can be seen that the utility model can facilitate the installation of the steel cable while making the steel cable support the photovoltaic panel more stable.
[0012] Furthermore, the bracket is in an inverted V shape, including two legs arranged on the left and right.
[0013] In the present invention, the two legs of the bracket are located in the same plane in the left and right directions, forming a stable triangular structure with the ground, which can improve its structural stability and make its support for the steel cable more stable.
[0014] Furthermore, a limiting ring group is provided on the bracket corresponding to the steel cable, and the limiting ring group includes a plurality of limiting rings arranged in a straight line. The steel cable passing through the ring on the bracket passes through all the limiting rings and is fixedly connected to the base.
[0015] In the present invention, after the steel cable passes through the ring on the bracket, it will also pass through all the limit rings and then be fixedly connected to the base. The presence of the ring can make the steel cable fit tightly on the bracket. Compared with the steel cable being away from the bracket, the space occupied by the flexible photovoltaic bracket can be reduced. At the same time, the ring can bind the steel cable to the bracket and also provide certain protection for the steel cable.
[0016] Furthermore, there are intervals between the mounting frames on the mounting surface.
[0017] In the present invention, the spacing between the mounting frames needs to be determined based on the size of the photovoltaic panels, so that after the photovoltaic panels are installed on the mounting frames, there are gaps between adjacent mounting panels. This allows wind energy to "leak" from the gaps between the photovoltaic panels during typhoons, thereby reducing the overall resistance and increasing the wind resistance of the flexible photovoltaic bracket.
[0018] Furthermore, the mounting portion is a U-shaped clamp fixedly arranged on the lower surface of the top plate, and there are four of them, two by two forming a group, and each group of U-shaped clamps is fixed on different steel cables.
[0019] In the utility model, the top plate is fixedly connected to the steel cables via U-shaped clamps fixed thereon, wherein the U-shaped clamps are installed in groups of two with different steel cables, which can improve the stability of the connection structure between the top plate and the two steel cables.
[0020] On the other hand, the present invention also provides a photovoltaic array for the above-mentioned flexible photovoltaic bracket, wherein the photovoltaic array is formed by a plurality of flexible photovoltaic brackets arranged in a front-to-back manner.
[0021] Furthermore, the mounting frames in the photovoltaic array are arranged in a rectangular array, and two mounting holes passing through the connecting portion are provided on the connecting portion of the mounting frame, and the axis of the mounting hole is arranged along the front-to-back direction; it also includes a support rod, and the two ends of the support rod are respectively fixedly connected to the mounting holes on the two adjacent mounting frames.
[0022] In the present invention, a support rod is used to securely connect two adjacent mounting brackets, thereby securing the mounting brackets on different flexible photovoltaic brackets in a photovoltaic array together. This prevents the photovoltaic panels on the adjacent flexible photovoltaic brackets from colliding with each other during typhoons, thereby preventing the photovoltaic panels from being damaged by the collision. Furthermore, by securely connecting the mounting brackets on all flexible photovoltaic brackets together, the support rod can effectively enhance the overall strength of the photovoltaic array. The support rod can be securely connected to the mounting holes provided on the connecting portion by welding or threading.
[0023] Furthermore, there is a gap between the mounting frames on two adjacent flexible photovoltaic brackets.
[0024] In the present invention, the spacing between the mounting frames on two adjacent flexible photovoltaic brackets needs to be determined based on the size of the photovoltaic panels, so that after the photovoltaic panels are installed on the mounting frames, there is a gap between the adjacent mounting panels. This allows wind energy to "leak" from the gaps between the photovoltaic panels during typhoons, thereby reducing the overall resistance and increasing the wind resistance of the flexible photovoltaic bracket.
[0025] The principle and effect of the present invention are further described below in combination with the above technical solutions and the accompanying drawings:
[0026] In the present invention, the lower surface of the top plate for installing photovoltaic panels is provided with connecting rods whose lower ends are fixedly connected to each other, and a plurality of stable triangular structures are formed between the connecting rods and the top plate. Therefore, the presence of the connecting rods can significantly enhance the rigidity of the top plate. Therefore, in typhoon weather, when the photovoltaic panels are blown by the wind and the steel cables are bent and deformed, the top plate with good rigidity can reduce or even avoid the deformation of the photovoltaic panels, thereby protecting the photovoltaic panels.
[0027] In the present invention, the mounting portion on the top plate for connecting to the steel cable is located between the front mounting area and the rear mounting area of the top plate, that is, after the mounting frame is installed on the steel cable, the steel cable will pass through the closed ring structure enclosed by the connecting rod and the top plate. Therefore, in typhoon weather, if the connection structure between the mounting frame and the steel cable is damaged, the restriction of the steel cable on the closed ring structure can still prevent the mounting frame together with the photovoltaic panel from falling from the steel cable. While preventing the photovoltaic panel from being damaged, it can also effectively prevent the mounting frame and the photovoltaic panel on it from hitting people or objects below, which can effectively improve the safety of the flexible photovoltaic bracket. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 This is a front structural diagram of the flexible photovoltaic bracket according to an embodiment of the present utility model;
[0029] Figure 2 for Figure 1 A partial enlarged view of
[0030] Figure 3 This is a schematic diagram of the top view of the flexible photovoltaic bracket according to an embodiment of the present utility model;
[0031] Figure 4 This is a bottom view of the mounting bracket according to an embodiment of the present utility model;
[0032] Figure 5 This is a front structural diagram of the mounting bracket according to an embodiment of the present utility model;
[0033] Figure 6 This is a side structural diagram of the mounting bracket according to an embodiment of the present utility model;
[0034] Figure 7 This is a schematic diagram of the top view of the photovoltaic array described in an embodiment of the present utility model.
[0035] Description of reference numerals:
[0036] 11-bracket 11, 111-ring 111, 112-limiting ring 112, 12-base 12, 121-connecting block 121, 122-connecting screw 122, 123-nut 123, 124-connecting ring 124, 2-steel cable 2, 31-top plate 31, 311-mounting part 311, 32-connecting rod 32, 33-connecting part 33, 331-mounting hole 331, 4-support rod 4. DETAILED DESCRIPTION
[0037] To facilitate understanding by those skilled in the art, the present invention will be described in further detail below with reference to the accompanying drawings and embodiments:
[0038] like Figure 1-6, a flexible photovoltaic bracket and a photovoltaic array using the same, comprising two support frames arranged on the left and right sides, and two steel cables 2 arranged between the two support frames, the left and right ends of the two steel cables 2 being fixed to the two support frames respectively, the two steel cables 2 being arranged along the left and right directions and at the same horizontal height to form an installation surface; a plurality of installation frames for installing photovoltaic panels are provided on the installation surface, the installation frames are arranged in sequence along the left and right directions, the installation frame comprises a square top plate 31, the front and rear ends of the lower surface of the top plate 31 are formed with a front installation area and a rear installation area, the left and right ends of the front installation area and the rear installation area are fixedly provided with a connecting rod 32, the lower end of the connecting rod 32 is inclined toward the center line of the top plate 31 and is fixedly connected to each other on the center line of the connecting rod 32 to form a connecting portion 33; the lower surface of the top plate 31 is further fixedly provided with a mounting portion 311 for fixedly connecting to the two steel cables 2 corresponding to the two steel cables 2, the mounting portion 311 is located on the lower surface of the top plate 31 and between the front installation area and the rear installation area.
[0039] In the present invention, the support frame of the flexible photovoltaic bracket is used as the supporting structure of the flexible photovoltaic bracket, which is fixedly installed on the ground and has the function of tightening and supporting the steel cable 2.
[0040] The two steel cables 2 straightened between the two support frames are used for the installation and support of the photovoltaic panels, wherein the photovoltaic panels are mounted on the steel cables 2 through the mounting frames. Specifically, the top plate 31 of the mounting frame is mounted and fixed on the steel cables 2 through the mounting portion 311 on its lower surface, and the photovoltaic panels are mounted on the upper surface of the top plate 31, thereby realizing the installation of the photovoltaic panels on the steel cables 2.
[0041] In the present invention, the lower surface of the top plate 31 for installing the photovoltaic panels is provided with connecting rods 32 whose lower ends are fixedly connected to each other. A plurality of stable triangular structures are formed between the connecting rods 32 and the top plate 31. Therefore, the presence of the connecting rods 32 can significantly enhance the rigidity of the top plate 31. Therefore, in typhoon weather, when the photovoltaic panels are blown by the wind and drive the steel cables 2 to bend and deform, the top plate 31 with good rigidity can reduce or even avoid the deformation of the photovoltaic panels, thereby achieving the effect of protecting the photovoltaic panels. In addition, the mounting portion 311 on the top plate 31 for connecting to the steel cable 2 is located between the front mounting area and the rear mounting area of the top plate 31, that is, after the mounting frame is installed on the steel cable 2, the steel cable 2 will pass through the closed ring structure enclosed by the connecting rod 32 and the top plate 31. Therefore, in typhoon weather, if the connection structure between the mounting frame and the steel cable 2 is damaged, the restriction of the steel cable 2 on the closed ring structure can still prevent the mounting frame from falling off the steel cable 2 together with the photovoltaic panel. While preventing the photovoltaic panel from being damaged, it can also effectively prevent the mounting frame and the photovoltaic panel on it from hitting people or objects below, which can effectively improve the safety of the flexible photovoltaic bracket.
[0042] In one embodiment, the support frame includes two brackets 11 arranged corresponding to the two steel cables 2, and the two brackets 11 are arranged front and back; the support frame also includes a base 12 arranged corresponding to the bracket 11, and the base 12 is located on the side of its corresponding bracket 11 away from the other support frame, and a ring 111 is fixedly provided on the top of the bracket 11, and the steel cable 2 passes through the ring 111 and is fixedly connected to the corresponding base 12, and the base 12 and the corresponding bracket 11 are separately arranged.
[0043] In this embodiment, the fixed connection structure between the steel cable 2 and the support frame is: the end of the steel cable 2 passes through the ring 111 on the bracket 11 and is fixedly connected to the corresponding base 12, wherein the base 12 and the bracket 11 are separately arranged, the base 12 plays a role in fixing the steel cable 2, and the bracket 11 plays a role in supporting the steel cable 2. Since the base 12 and the bracket 11 are respectively fixedly installed on the ground using a split structure, the fixing and supporting effect of the support frame on the steel cable 2 can be effectively increased.
[0044] In one embodiment, a connecting block 121 is fixedly provided on the base 12, and a connecting hole is opened on the connecting block 121 to pass through it on the left and right sides. A connecting screw 122 is inserted into the connecting hole, and a connecting ring 124 is fixedly provided on the connecting screw 122 at one end facing the bracket 11. The steel cable 2 is connected to the connecting screw 122 through the connecting ring 124. Two nuts 123 are also provided on the connecting screw 122, and the two nuts 123 are respectively located on the left and right sides of the connecting block 121 and abut against the connecting block 121.
[0045] In this embodiment, the steel cable 2 is fixedly connected to the base 12 via a connecting screw 122, wherein the left and right positions of the connecting screw 122 can be adjusted by adjusting the two nuts 123 on the connecting screw 122, thereby facilitating the tightening of the steel cable 2 and adjusting the tension of the steel cable 2. After the installation of the steel cable 2 is completed, the prestressing of the steel cable 2 can be conveniently applied. It can be seen that the utility model can facilitate the installation of the steel cable 2 while making the support of the photovoltaic panel by the steel cable 2 more stable.
[0046] In one embodiment, the bracket 11 is in an inverted V shape, including two legs arranged on the left and right.
[0047] In this embodiment, the two legs of the bracket 11 are located in the same plane in the left-right direction, forming a stable triangular structure with the ground, which can improve its structural stability and make its support for the steel cable 2 more stable.
[0048] In one embodiment, a group of limiting rings 112 is provided on the bracket 11 corresponding to the steel cable 2. The group of limiting rings 112 includes a plurality of limiting rings 112 arranged in a straight line. The steel cable 2 passing through the ring 111 on the bracket 11 passes through all the limiting rings 112 and is fixedly connected to the base 12.
[0049] In this embodiment, after the steel cable 2 passes through the ring 111 on the bracket 11, it will also pass through all the limit rings 112 and then be fixedly connected to the base 12. The presence of the ring 111 can make the steel cable 2 fit tightly on the bracket 11. Compared with the steel cable 2 being away from the bracket 11, the space occupied by the flexible photovoltaic bracket can be reduced. At the same time, the ring 111 can bind the steel cable 2 to the bracket 11 and also provide certain protection for the steel cable 2.
[0050] In one embodiment, there are intervals between the mounting brackets on the mounting surface.
[0051] In this embodiment, the spacing between the mounting frames needs to be determined based on the size of the photovoltaic panels, so that after the photovoltaic panels are installed on the mounting frames, there are gaps between adjacent mounting panels. This allows wind energy to "leak" through the gaps between the photovoltaic panels during typhoons, thereby reducing the overall resistance and increasing the wind resistance of the flexible photovoltaic bracket.
[0052] In one embodiment, the mounting portion 311 is a U-shaped clamp fixedly arranged on the lower surface of the top plate 31 , and there are four of them, two by two forming a group, and each group of U-shaped clamps is fixed on different steel cables 2 .
[0053] In this embodiment, the top plate 31 is fixedly connected to the steel cables 2 via U-shaped clamps fixed thereon, wherein the U-shaped clamps are installed in groups of two with different steel cables 2, which can improve the stability of the connection structure between the top plate 31 and the two steel cables 2.
[0054] On the other hand, the present invention also provides a photovoltaic array for the above-mentioned flexible photovoltaic bracket, such as Figure 7 The photovoltaic array is composed of several flexible photovoltaic supports arranged in front and back.
[0055] In one embodiment, the mounting frames in the photovoltaic array are arranged in a rectangular array, and two mounting holes 331 are provided on the connecting portion 33 of the mounting frame, and the axes of the mounting holes 331 are arranged along the front-to-back direction; and a support rod 4 is also included, and the two ends of the support rod 4 are respectively fixedly connected to the mounting holes 331 on the two adjacent mounting frames.
[0056] In this embodiment, the support rod 4 is used to securely connect two adjacent mounting brackets, thereby securing the mounting brackets on different flexible photovoltaic brackets in the photovoltaic array together. This can prevent the photovoltaic panels on the adjacent flexible photovoltaic brackets from colliding with each other during typhoon weather, thereby preventing the photovoltaic panels from being damaged by the collision. Furthermore, by securely connecting the mounting brackets on all flexible photovoltaic brackets together via the support rod 4, the overall strength of the photovoltaic array can be effectively enhanced. The support rod 4 can be securely connected to the mounting hole 331 provided on the connecting portion 33 by welding or threading.
[0057] In one embodiment, there is a gap between the mounting frames on two adjacent flexible photovoltaic brackets.
[0058] In this embodiment, the spacing between the mounting frames on two adjacent flexible photovoltaic brackets needs to be determined based on the size of the photovoltaic panels, so that after the photovoltaic panels are installed on the mounting frames, there will be gaps between adjacent mounting panels. This will allow wind energy to "leak" through the gaps between the photovoltaic panels during typhoons, thereby reducing the overall resistance and increasing the wind resistance of the flexible photovoltaic bracket.
[0059] The above embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the concept of the present invention, and these variations and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.
Claims
1. A flexible photovoltaic bracket, comprising two support frames arranged left and right, and two steel cables arranged between the two support frames, wherein the left and right ends of the two steel cables are respectively fixed to the two support frames, and the two steel cables are arranged in the left and right directions and at the same horizontal height to form a mounting surface; characterized in that: A number of mounting brackets for mounting photovoltaic panels are provided on the mounting surface, and the mounting brackets are arranged in sequence along the left-right direction. The mounting brackets include a square top plate, and a front mounting area and a rear mounting area are formed at the front and rear ends of the lower surface of the top plate. Connecting rods are fixedly provided at both left and right ends of the front and rear mounting areas, and the lower ends of the connecting rods are inclined toward the center line of the top plate and are fixedly connected to each other on the center line of the connecting rods to form a connecting portion; a mounting portion for fixedly connecting to the two steel cables is also fixedly provided on the lower surface of the top plate corresponding to the two steel cables, and the mounting portion is located on the lower surface of the top plate and between the front mounting area and the rear mounting area.
2. A flexible photovoltaic bracket according to claim 1, characterized in that: The support frame includes two brackets arranged corresponding to the two steel cables, and the two brackets are arranged front and back; the support frame also includes a base arranged corresponding to the bracket, and the base is located on the side of its corresponding bracket away from the other support frame. A ring is fixedly provided on the top of the bracket, and the steel cable passes through the ring and is fixedly connected to the corresponding base. The base and the corresponding bracket are arranged separately.
3. A flexible photovoltaic bracket according to claim 2, characterized in that: A connecting block is fixedly provided on the base, and connecting holes are provided on the connecting block to pass through it on the left and right sides. A connecting screw is inserted into the connecting hole, and a connecting ring is fixedly provided on the connecting screw at one end facing the bracket. The steel cable is connected to the connecting screw through the connecting ring. Two nuts are also provided on the connecting screw, and the two nuts are respectively located on the left and right sides of the connecting block and abut against the connecting block.
4. A flexible photovoltaic support according to claim 3, characterized in that: The bracket is in an inverted V shape and includes two legs arranged on the left and right.
5. The flexible photovoltaic support according to claim 4, characterized in that: A limiting ring group is provided on the bracket corresponding to the steel cable. The limiting ring group includes a plurality of limiting rings arranged in a straight line. The steel cable passing through the ring on the bracket passes through all the limiting rings and is fixedly connected to the base.
6. The flexible photovoltaic support according to claim 1, characterized in that: The mounting portion is a U-shaped clamp fixedly arranged on the lower surface of the top plate, and there are four of them, two by two forming a group, and each group of U-shaped clamps is fixed on different steel cables.
7. The flexible photovoltaic support according to claim 1, characterized in that: There are intervals between the mounting brackets on the mounting surface.
8. A photovoltaic array using the flexible photovoltaic support according to any one of claims 1 to 7, characterized in that: The photovoltaic array is formed by a plurality of flexible photovoltaic supports arranged in a front-to-back manner.
9. The photovoltaic array according to claim 8, characterized in that: The mounting frames in the photovoltaic array are arranged in a rectangular array, and two mounting holes are provided on the connecting portion of the mounting frames, and the axes of the mounting holes are arranged along the front-to-back direction; and a support rod is also included, and the two ends of the support rod are respectively fixedly connected to the mounting holes on the two adjacent mounting frames.
10. A photovoltaic array according to claim 8 or 9, characterized in that: There is a gap between the mounting frames on two adjacent flexible photovoltaic supports.