WO2024201330A1

WO2024201330A1 - A mechanical structure system to support mounting of bifacial solar panels on a slant roof

Info

Publication number: WO2024201330A1
Application number: PCT/IB2024/052966
Authority: WO
Inventors: S.K. Radhakrishnan; R. Savithiri
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-03-27
Filing date: 2024-03-27
Publication date: 2024-10-03
Anticipated expiration: 2025-09-27

Abstract

The mechanical structure system to support mounting of bifacial solar panels on a slant roof (1) comprises a plurality of C-channels (3) mounted on a slant roof or GI / Asbestos Sheet (2) installed on the slant roof; an array of bifacial solar panels (4) mechanically coupled to the plurality of C-channels and secured at an optimum height from the slant roof through a raised pillar (7) fastened to each corner of bifacial solar panel, wherein the array of bifacial solar panels (4) is mounted such that each solar panel is tilted at an optimized tilted angle, wherein the optimized tilted angle is preferably equal to a latitude angle that varies relatively to a geo-location.

Description

A MECHANICAL STRUCTURE SYSTEM TO SUPPORT MOUNTING OF BIFACIAL SOLAR PANELS ON A SLANT ROOF

FIELD OF THE INVENTION

The present disclosure relates to a mechanical structure system to support mounting of bifacial solar panels on a slant roof of a building and maintain a minimum height from the roof.

BACKGROUND OF THE INVENTION

Previously, only mono-facial panels only are used in the market. When using mono facial panels, the solar panels are just fixed on the surface of the slanted roof with literally no gap between the solar panel’s bottom surface and the roof surface of a building to enable the top surface of the solar panel to face the sky in order to receive the sunray without any shadow.

Recently, bifacial solar panels have come into being replacing the mono facial solar panels for better productivity. That means bifacial panels can generate power from both the sides (top and bottom sides) of the solar panels and whereas the mono-facial solar panels can generate power from the top side only. Since bifacial solar panels can generate power from both sides (top and bottom) of the solar panels, the bottom side of the bifacial panels should be kept at a comfortable height from the slant roof surface to receive the reflected light from the sun and diffused light from other nearby objects, clouds, etc.

So, if at all anyone wants to generate more power from a bifacial solar panel by installing it over the surface of a slant roof, then it is necessary to a have an innovative structure system to hold the bifacial solar panels at a height from the surface of the slant roof surface to receive the reflected/diffused sunlight at the bottom surface of the bifacial solar panel to generate additional power over and above the top surface of the bifacial solar panel generating power. As of today, there is no system or structure available in the market to keep the bifacial solar panels at a height from the slant roof surface for higher productivity.

In the view of the forgoing discussion, it is clearly portrayed that there is a need to have a mechanical structure system to support mounting of bifacial solar panels on a slant roof of a building.

SUMMARY OF THE INVENTION

The present disclosure seeks to provide a mechanical structure system to support mounting of bifacial solar panels at a height from the slant roof surface by maintaining the bifacial bottom surface in parallel to the slant roof surface, to enable the bottom of the bifacial solar panel to receive the reflected sunlight from the slanted roof, to receive the reflected sunlight from the specially designed sunlight reflectors and to receive the diffused light from the nearby objects, and clouds.

In an embodiment, a mechanical structure system to support mounting of bifacial solar panels on a slant roof is disclosed. The system includes a plurality of C-channels mounted on a slant roof or GI / Asbestos Sheet installed on the slant roof. The system further includes an array of bifacial solar panels mechanically coupled to the plurality of C-channels and secured at an optimum height from the slant roof through a raised pillar fastened to each corner of bifacial solar panel, wherein the bifacial solar panels are having a first solar energy receiving face exposed towards the direction of sun and a second solar energy receiving face exposed opposite to the direction of sun. The array of bifacial solar panels is mounted such that each solar panel is tilted at an optimized tilted angle, wherein the optimized tilted angle is preferably equal to a latitude angle that varies relatively to a geo-location.

In another embodiment, a series of length side reflectors positioned to each of the length side of the bifacial solar panels and a series of width side reflectors positioned to each of the width side of the bifacial solar panels for reflecting the sunlight on the second solar energy receiving face of the bifacial solar panels, wherein a pair of the series of width side reflectors and a pair of the length side reflectors are deployed to corners of the bifacial solar panels.

In another embodiment, the plurality of C-channels are mounted in an identical direction, wherein the C-channels are arranged in a manner such that distance between first and second channel is a width of the reflector and distance between second and third channel is the width of bifacial solar panel.

In another embodiment, the raised pillar is fastened into a first cutout fabricated into the C-channel, wherein a combination of an end Clamp / Z-Clamp and a clamp plate is coupled to the raised pillar to secure the bifacial solar panels from the four corners, wherein the clamp plate is horizontally attached to the raised pillar and the end Clamp / Z-Clamp is fastened on the clamp plate using a screw mechanism.

In another embodiment, preferably gable type reflectors is disposed in between the gap of the array of bifacial solar panels to reflect the sunlight on the second solar energy receiving face.

In another embodiment, the optimum height from the slant roof is selected from 2-10 cm, which is selected according to the elevation angle of roof and elevation angle of the sides of the reflectors.

In another embodiment, the elevation angle of the sides of the reflectors and optimum height of the bifacial solar panels are selected such that the sunlight bounce backed from the reflectors are received from to the corner to center of the second solar energy receiving face, wherein each solar panel is tilted in a south direction, if the geo-location is in a northern hemisphere, whereas each solar panel is tilted in a north direction, if the geo-location is in a southern hemisphere, and each solar panel is tilted in zero degrees (flat), if the geo-location is exactly on a meridian line.

In another embodiment, a strip of the vertically extended sides of the reflectors are fixed into a second cutout fabricated into the C-channel and secured using a screw mechanism, wherein the panels are fixed to the C-channel s and the panels are secured using a U-clamp.

In another embodiment, the array of bifacial solar panels simultaneously or individually tilt up to 45 degrees from its initial position to receive maximum sunlight to generate maximum power generation when mounted on a slanted rooftop/flat rooftop/water- floating flatforms, wherein the array of bifacial solar panels tilt automatically or manually, wherein said bifacial solar panels are manually tilted upon adjusting at least two swivel clamps attached to the bifacial solar panels and raised pillar, wherein fastener is engaged with a rail of each raised pillar, and height of the fastener is adjusted from a top to bottom of the rail to adjust the tilt angle.

In another embodiment, the array of bifacial solar panels tilt automatically by deploying an automatic solar tracking assembly, wherein the automatic solar tracking assembly comprises a plurality of light-detecting resistors positioned to detect real-time light intensity. In one embodiment, a controlling unit is connected to the light-detecting resistors to calculate optimal panel tilt angle according to the geo-location. In one embodiment, an actuator is interconnected to the controlling unit and the array of bifacial solar panels controlled by the controlling unit to dynamically adjust the tilt and azimuth angles of each panel for maximum sunlight exposure. In one embodiment, wherein the raised pillar is preferably retractable and coupled mechanically to the actuator to tilt the bifacial solar panels.

An object of the present disclosure is to develop a mechanical structure system to keep the bifacial solar panel at a minimum height from the slant roof surface by maintaining the bifacial bottom surface in parallel to the slant roof surface.

Another object of the present disclosure is to enable the bottom of the bifacial solar panel to receive the reflected sunlight from the slanted roof and to receive the reflected sunlight from the specially designed sunlight reflectors and to receive the diffused light from the nearby objects, clouds, etc.,

Yet another object of the present invention is to deliver an expeditious and cost- effective bifacial solar panel structure system for slant roof mounting for increasing efficiency of the bifacial solar panel.

To further clarify advantages and features of the present disclosure, a more particular description of the invention will be rendered by reference to specific embodiments thereof, which is illustrated in the appended drawings. It is appreciated that these drawings depict only typical embodiments of the invention and are therefore not to be considered limiting of its scope. The invention will be described and explained with additional specificity and detail with the accompanying drawings.

BRIEF DESCRIPTION OF FIGURES

These and other features, aspects, and advantages of the present disclosure will become better understood when the following detailed description is read with reference to the accompanying drawings in which like characters represent like parts throughout the drawings, wherein:

Figure 1 illustrates an exemplary profile of a mechanical structure system to support mounting of bifacial solar panels on a slant roof in accordance with an embodiment of the present disclosure;

Figure 2 illustrates a detailed view of all parts of a mechanical structure system in accordance with an embodiment of the present disclosure;

Figure 3 illustrates an exploded view of a mechanical structure system in accordance with an embodiment of the present disclosure;

Figure 4 illustrates (a) a front view (with) direct & reflected sun-ray and (b) a right view (with) direct & reflected sun-ray in accordance with an embodiment of the present disclosure;

Figure 5 illustrates schematic of proposed slant roof structure with raised pillar & reflectors in accordance with an embodiment of the present disclosure;

Figure 6 illustrates schematic of typical slant roof structure to mount bifacial panels in accordance with an embodiment of the present disclosure;

Figure 7 illustrates detailed view of the typical slant roof structure to mount bifacial panels in accordance with an embodiment of the present disclosure;

Figure 8 illustrates a panel tilted at a defined angle in accordance with an embodiment of the present disclosure;

Figure 9 illustrates a swivel clamp and raised pillar connection diagram in accordance with an embodiment of the present disclosure;

Figure 10 illustrates exemplary profiles of tilted solar panel at different angles in accordance with an embodiment of the present disclosure;

Figure 11 illustrates the panels tilted from north to south in accordance with an embodiment of the present disclosure;

Figure 12 illustrates that latitude angle, slant roof angle and the structure angle is same in accordance with an embodiment of the present disclosure;

Figure 13 illustrates that latitude angle is equal to the structure angle, but slant roof angle is smaller than latitude angle and greater than the structure angle in accordance with an embodiment of the present disclosure;

Figure 14 illustrates that latitude angle is equal to the structure angle, but slant roof angle is greater than latitude angle and smaller than the structure angle in accordance with an embodiment of the present disclosure; Figure 15 illustrates a floating base array-based system in accordance with an embodiment of the present disclosure; and

Figure 16 illustrates sunlight reflection in special structure system with reflectors in accordance with an embodiment of the present disclosure.

Further, skilled artisans will appreciate that elements in the drawings are illustrated for simplicity and may not have necessarily been drawn to scale. For example, the flow charts illustrate the method in terms of the most prominent steps involved to help to improve understanding of aspects of the present disclosure. Furthermore, in terms of the construction of the device, one or more components of the device may have been represented in the drawings by conventional symbols, and the drawings may show only those specific details that are pertinent to understanding the embodiments of the present disclosure so as not to obscure the drawings with details that will be readily apparent to those of ordinary skill in the art having benefit of the description herein.

DETAILED DESCRIPTION:

For the purpose of promoting an understanding of the principles of the invention, reference will now be made to the embodiment illustrated in the drawings and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the invention is thereby intended, such alterations and further modifications in the illustrated system, and such further applications of the principles of the invention as illustrated therein being contemplated as would normally occur to one skilled in the art to which the invention relates.

It will be understood by those skilled in the art that the foregoing general description and the following detailed description are exemplary and explanatory of the invention and are not intended to be restrictive thereof.

Reference throughout this specification to “an aspect”, “another aspect” or similar language means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present disclosure. Thus, appearances of the phrase “in an embodiment”, “in another embodiment” and similar language throughout this specification may, but do not necessarily, all refer to the same embodiment.

The terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process or method that comprises a list of steps does not include only those steps but may include other steps not expressly listed or inherent to such process or method. Similarly, one or more devices or sub-systems or elements or structures or components proceeded by "comprises...a" does not, without more constraints, preclude the existence of other devices or other sub-systems or other elements or other structures or other components or additional devices or additional sub-systems or additional elements or additional structures or additional components. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The system, methods, and examples provided herein are illustrative only and not intended to be limiting.

Embodiments of the present disclosure will be described below in detail with reference to the accompanying drawings.

Referring to Figure 1, an exemplary profile of a mechanical structure system to support mounting of bifacial solar panels on a slant roof is illustrated in accordance with an embodiment of the present disclosure. The system 100 includes a plurality of C-channels 3 mounted on a slant roof 1 or GI / Asbestos Sheet 2 installed on the slant roof 1.

In an embodiment, an array of bifacial solar panels 4 are mechanically coupled to the plurality of C-channels 3 and secured at an optimum height from the slant roof 1 through a raised pillar 7 fastened to each corner of bifacial solar panel, wherein the bifacial solar panels 4 are having a first solar energy receiving face exposed towards the direction of sun and a second solar energy receiving face exposed opposite to the direction of sun.

The array of bifacial solar panels (4) is mounted such that each solar panel is tilted at an optimized tilted angle, wherein the optimized tilted angle is preferably equal to a latitude angle that varies relatively to a geo-location

In an embodiment, a series of length side reflectors 9 are positioned to each of the length side of the bifacial solar panels 4 and a series of width side reflectors 10 positioned to each of the width side of the bifacial solar panels 4 for reflecting the sunlight on the second solar energy receiving face of the bifacial solar panels 4.

In another embodiment, the plurality of C-channels 3 are mounted in an identical direction, wherein the C-channels 3 are arranged in a manner such that distance between first and second channel is a width of the reflector 10 and distance between second and third channel is the width of bifacial solar panel and so on.

In another embodiment, the raised pillar 7 is fastened into a first cutout 11 fabricated into the C-channel 3, wherein a combination of an end Clamp / Z-Clamp 6 and a clamp plate 8 is coupled to the raised pillar 7 to secure the bifacial solar panels 4 from the four corners, wherein the clamp plate 8 is horizontally attached to the raised pillar 7 and the end Clamp / Z-Clamp 6 is fastened on the clamp plate 8 using a screw mechanism.

In another embodiment, preferably gable type reflectors 9, 10 is disposed in between the gap of the array of bifacial solar panels 4 to reflect the sunlight on the second solar energy receiving face. In another embodiment, the optimum height from the slant roof 1 is selected from 2- 10 cm, which is selected according to the elevation angle of roof and elevation angle of the sides of the reflectors 9, 10.

In another embodiment, the elevation angle of the sides of the reflectors 9, 10 and optimum height of the bifacial solar panels 4 are selected such that the sunlight bounce backed from the reflectors 9, 10 are received from to the corner to center of the second solar energy receiving face.

In another embodiment, a strip of the vertically extended sides of the reflectors 9, 10 are fixed into a second cutout 12 fabricated into the C-channel and secured using a screw mechanism, wherein the panels (4) are fixed to the C-channel s (3) and the panels (4) are secured using a U-clamp (5).

In another embodiment, the array of bifacial solar panels (4) are initially tilted such that tilted angle is equal to a latitude angle that varies relatively to a geo-location, wherein the tilt-mount the solar panels in a south direction, if the geo-location is in a northern hemisphere, whereas the tilt-mount the solar panels in a north direction, if the geo-location is in a southern hemisphere, and deploy the solar panels in zero degrees (flat), if the geolocation is exactly on the meridian line.

In another embodiment, the array of bifacial solar panels (4) simultaneously or individually tilt up to 45 degrees from its initial position to receive maximum sunlight to generate maximum power generation when mounted on a slanted rooftop/flat rooftop/water- floating flatforms, wherein the array of bifacial solar panels (4) tilt automatically or manually, wherein said bifacial solar panels (4) are manually tilted upon adjusting at least two swivel clamps attached to the bifacial solar panels (4) and raised pillar (7), wherein fastener is engaged with a rail of each raised pillar (7), and height of the fastener is adjusted from a top to bottom of the rail to adjust the tilt angle.

In another embodiment, the array of bifacial solar panels (4) tilt automatically by deploying an automatic solar tracking assembly, wherein the automatic solar tracking assembly comprises a plurality of light-detecting resistors positioned to detect real-time light intensity.

In one embodiment, a controlling unit is connected to the light-detecting resistors to calculate optimal panel tilt angle according to the geo-location.

In one embodiment, an actuator is interconnected to the controlling unit and the array of bifacial solar panels (4) controlled by the controlling unit to dynamically adjust the tilt and azimuth angles of each panel for maximum sunlight exposure. The raised pillar (7) is preferably retractable and coupled mechanically to the actuator to tilt the bifacial solar panels (4).

Figure 2 illustrates a detailed view of all parts of a mechanical structure system in accordance with an embodiment of the present disclosure. A series of parallel C-channels 3 are fastened on the slant roof top through the fastener such that C groove of the C-channels 3 are exposed towards outer surface of the roof top.

In one embodiment, each of the sunlight reflector assembly are detachably fitted either at both opposite length sides or at opposite width sides or at on all 4 sides of each bifacial solar photovoltaic panels 4.

In one embodiment, each bifacial solar photovoltaic panels 4 are secured from at least four corners using the End Clamp / Z Clamp 6 sidewise. The End Clamp / Z Clamp 6 are mounted on a square shaped clamp plate 8 attached with the raised pillar 7.

In one embodiment, the cut 1 11 is fabricated to allow insertion of raised pillar 7 and cut 2 12 is fabricated to allow insertion of reflectors 9, 10 to the C-channels 3.

Figure 3 illustrates an exploded view of a mechanical structure system in accordance with an embodiment of the present disclosure. The reflectors 9, 10 are having A-shaped structure with reflecting surface along with and horizontally extended strips and vertically extended strips, wherein the horizontally extended strips are mounted on the C-channels 3 and vertically extended strips are engaged with the cut 2 12. The single reflector is used for reflecting sunlight to the two adjacent bifacial solar photovoltaic panels 4.

Figure 4 illustrates (a) a front view (with) direct & reflected sun-ray and (b) a right view (with) direct & reflected sun-ray in accordance with an embodiment of the present disclosure. The direct sun-ray 13 vertically falling over the surface of the reflector is reflected at a certain angle such that the reflected sun-ray 14 falls on the second (lower) face of the bifacial solar photovoltaic panel whereas first (upper) face of the bifacial solar photovoltaic panel is exposed to the direct sun-ray 13.

Figure 5 illustrates schematic of proposed slant roof structure with raised pillar 7 & reflectors 9, 10 in accordance with an embodiment of the present disclosure. Figure 5 shows array of solar panels 4 mounted on a slop roof through the disclosed structure system.

Figure 6 illustrates schematic of typical slant roof structure to mount bifacial panels 4 in accordance with an embodiment of the present disclosure. Figure 6 shows basic structure of the slant roof 1 of GI / Asbestos Sheet 2.

Figure 7 illustrates detailed view of the typical slant roof structure to mount solar panels 4 in accordance with an embodiment of the present disclosure. In typical structure, the panel is mounted at a certain height, which is generally acceptable for the flat roof, but not acceptable to the slant roof 1.

The panels 4 are fixed to the C-channels 3 and the panels 4 are secured using a U- clamp 5. Figure 8 illustrates a panel tilted at a defined angle in accordance with an embodiment of the present disclosure. The scientific principles to be followed for mounting a solar panel (mono-facial or bi-facial) on a slanted rooftop or on a flat rooftop or on waterfloating flatforms are very important to harvest maximum power.

To generate maximum power generation from a solar photovoltaic module (monofacial or bi-facial) when mounted on a slanted rooftop or on a flat rooftop or on waterfloating flatforms, it is always required to tilt-mount the solar photovoltaic module by keeping the tilted angle equal to the latitude angle of the location of the solar project to harvest the maximum power. a. tilt-mount the solar panels in the south direction, if the location of the project is in the northern hemisphere b. tilt-mount the solar panels in the north direction, if the location of the project is in the southern hemisphere c. keep the solar panels in the zero degrees (flat), if the location of the project is exactly on the meridian line.

Figure 9 illustrates a swivel clamp and raised pillar connection diagram in accordance with an embodiment of the present disclosure.

Figure 10 illustrates exemplary profiles of tilted solar panel at different angles in accordance with an embodiment of the present disclosure.

Figure 11 illustrates the panels tilted from north to south in accordance with an embodiment of the present disclosure.

Figure 12 illustrates that latitude angle, slant roof angle and the structure angle is same in accordance with an embodiment of the present disclosure.

To generate additional power generation from the bottom side of a bi-facial solar photovoltaic module when mounted on a slanted rooftop or on a flat rooftop or on waterfloating flatforms, it is required a. to maintain a gap between the bottom side of the bi-facial solar module and the slanted roof surface or flat rooftop surface or flat rooftop surface or the surface of the water floating platform, as the case may be b. to maintain a spacing around all sides of each of the solar panels when mounted to enable the sunray to fall on the slanted roof surface or on the flat rooftop surface or on the water floating platform surface in order to get reflected back to the bottom of the bifacial solar photovoltaic module to generate additional power, as the case may be. c. Mounting of additional reflectors on the surface of the slanted roof or on the flat rooftop surface or on the surface of the water-floating platform, as the case may be, if required, to increase the reflectivity index of the slanted roof surface or of the flat rooftop surface or of the surface of the water-floating platform to enable more sunlight to fall on the slanted roof surface or on the flat rooftop surface or on the water-floating platforms and the falling sunlight to get reflected back to the bottom side of the bi-facial panels to generate maximum additional solar power.

This invention angle & height adjustable module mounting structure is designed and constructed to mount bi-facial solar panels on a slanted roof surface or on a flat rooftop surface or on a water-floating platform to suit any project location on earth to generate additional and maximum power generation.

Figure 13 illustrates that latitude angle is equal to the structure angle, but slant roof angle is smaller than latitude angle and greater than the structure angle in accordance with an embodiment of the present disclosure.

Figure 14 illustrates that latitude angle is equal to the structure angle, but slant roof angle is greater than latitude angle and smaller than the structure angle in accordance with an embodiment of the present disclosure.

Figure 15 illustrates a floating base array-based system in accordance with an embodiment of the present disclosure.

Figure 16 illustrates sunlight reflection in special structure system with reflectors in accordance with an embodiment of the present disclosure. The current practice of mounting bi-facial solar panels using standard mounting structures prevents the bottom side of the panel from generating additional solar power. Therefore, there is a need to invent a new and unique structure that allows bi-facial solar panels to be mounted on slanted rooftops, flat rooftops, and floating platforms, enabling them to harvest additional solar power from their bottom side.

This invention introduces the Special Structure System which is designed to mount Bifacial Panels over rooftops and floating platforms. The structure is adjustable, unique, and specially designed to generate 35% to 40% additional solar power from the bottom side of the bi-facial solar panel when compared to an equivalent capacity mono-facial/bi-facial solar panels mounted on a standard mounting structure over slanted rooftops, flat rooftops, or floating platforms. the developed system offers several provisions. These include flexible tilt-angle setting using the angle adjustment pillar, swivel clamp, and maintaining the required gap between the roof surface and the bottom of the bi-facial solar panel to allow reflected sunlight to reach the bottom of the panel with the best possible incident angle and permits the free flow of air between the mounting surface and the bottom side of the bi-facial solar panel. The following are the benefits of our innovative special structure system.

The system has a provision that allows for an adjustable gap between the bottom of bi-facial solar panels and the mounting surface on which special structure systems are mounted. This gap enables the reflected sunray to reach the bottom side of the bi-facial solar panels to generate additional solar power from the bottom side of the bi-facial solar panel.

The system has a provision that allows for an adjustable gap between the bottom of bi-facial solar panels and the mounting surface on which special structure systems are mounted. This gap enables the free flow of air through the gap. This phenomenon helps carry away the heated air trapped below the bottom side of the solar panel to maintain the solar panel temperature at the minimum to generate maximum solar power.

The system has a provision that allows for an adjustable gap between the bottom of bi-facial solar panels and the mounting surface on which special structure systems are mounted. This gap enables additional sunlight to be reflected from the added sunlight reflectors through the gap. This phenomenon helps to permit additional reflected sunray to reach the bottom side of the solar panel from the sunlight reflectors to increase the intensity of light rays to generate additional solar power.

The system has a provision that allows for an adjustable gap between the bottom of bi-facial solar panels and the mounting surface on which special structure systems are mounted. This adjustable gap can be varied to change the incident angle of the sunlight reflected from the mounting surface or add sunlight reflectors through the gap. This phenomenon helps to change the incident angle of the reflected sunray to reach the bottom side of the solar panel from the sunlight reflectors closer to 90 degrees to maximize solar power generation.

The system has a provision to maintain the required tilt angle of the bi-facial solar panel by the angle adjustable pillar and the swivel clamp. The Special Structure System when mounted on the mounting surface of slanted or flat rooftops or floating platforms, the required tilt-angle (normally the tilt-angles are equal to the latitude angle of the location of the solar project) can be set using angle adjustable pillar and the swivel clamp. This tilt-angle adjustable Special Structure System helps to maintain the required tilt-angle to the bi-facial solar panel corresponding to the location to maximize the solar power generation.

The typical latitude angles for different locations are given below.

The developed system 100 provides bifacial solar panel structure system for slant roof mounting with a novel idea to keep the bifacial solar panel at a height from the slant roof surface by maintaining the bifacial bottom surface in parallel to the slant roof surface, to enable the bottom of the bifacial solar panel to receive the reflected sunlight from the slanted roof, to receive the reflected sunlight from the specially designed sunlight reflectors 9, 10 and to receive the diffused light from the nearby objects, clouds, etc. Thus, bifacial solar panels 4 are mounted on our “Bifacial solar panel structure system for slant roof mounting” generating additional power from the bottom surface of the bifacial solar panels 4 and increasing productivity.

The drawings and the forgoing description give examples of embodiments. Those skilled in the art will appreciate that one or more of the described elements may well be combined into a single functional element. Alternatively, certain elements may be split into multiple functional elements. Elements from one embodiment may be added to another embodiment. For example, orders of processes described herein may be changed and are not limited to the manner described herein. Moreover, the actions of any flow diagram need not be implemented in the order shown; nor do all of the acts necessarily need to be performed. Also, those acts that are not dependent on other acts may be performed in parallel with the other acts. The scope of embodiments is by no means limited by these specific examples. Numerous variations, whether explicitly given in the specification or not, such as differences in structure, dimension, and use of material, are possible. The scope of embodiments is at least as broad as given by the following claims.

Benefits, other advantages, and solutions to problems have been described above with regard to specific embodiments. However, the benefits, advantages, solutions to problems, and any component(s) that may cause any benefit, advantage, or solution to occur or become more pronounced are not to be construed as a critical, required, or essential feature or component of any or all the claims.

Claims

1. A mechanical structure system to support mounting of bifacial solar panels on a slant roof, the system comprises: a plurality of C-channels (3) mounted on a slant roof (1) or GI / Asbestos Sheet (2) installed on the slant roof (1); an array of bifacial solar panels (4) mechanically coupled to the plurality of C- channels (3) and secured at an optimum height from the slant roof (1) through a raised pillar (7) fastened to each comer of bifacial solar panel (4), wherein the bifacial solar panels (4) are having a first solar energy receiving face exposed towards the direction of sun and a second solar energy receiving face exposed opposite to the direction of sun; and wherein the array of bifacial solar panels (4) is mounted such that each solar panel is tilted at an optimized tilted angle, wherein the optimized tilted angle is preferably equal to a latitude angle that varies relatively to a geo-location.

2. The system as claimed in claim 1, further comprises a series of length side reflectors (9) positioned to each of the length side of the bifacial solar panels (4) and a series of width side reflectors (10) positioned to each of the width side of the bifacial solar panels (4) for reflecting the sunlight on the second solar energy receiving face of the bifacial solar panels (4), wherein a pair of the series of width side reflectors (10) and a pair of the length side reflectors (9) are deployed to comers of the bifacial solar panels (4).

3. The system as claimed in claims 1 and 2, wherein the plurality of C-channels (3) are mounted in an identical direction, wherein the C-channels (3) are arranged in a manner such that distance between first and second channel is a width of the reflector and distance between second and third channel is the width of bifacial solar panel (4).

4. The system as claimed in claim 1, wherein the raised pillar (7) is fastened into a first cutout (11) fabricated into the C-channel (3), wherein a combination of an end Clamp / Z- Clamp (6) and a clamp plate (8) is coupled to the raised pillar (7) to secure the bifacial solar panels (4) from the four corners, wherein the clamp plate (8) is horizontally attached to the raised pillar (7) and the end Clamp / Z-Clamp (6) is fastened on the clamp plate (8) using a screw mechanism.

5. The system as claimed in claim 2, wherein preferably gable type reflectors is disposed in between the gap of the array of bifacial solar panels (4) to reflect the sunlight on the second solar energy receiving face.

6. The system as claimed in claims 1 and 2, wherein the optimum height from the slant roof (1) is selected from 2-10 cm, which is selected according to the elevation angle of roof and elevation angle of the sides of the reflectors.

7. The system as claimed in claim 2, wherein the elevation angle of the sides of the reflectors and optimum height of the bifacial solar panels (4) are selected such that the sunlight bounce backed from the reflectors are received from to the comer to center of the second solar energy receiving face, wherein each solar panel is tilted in a south direction, if the geo-location is in a northern hemisphere, whereas each solar panel is tilted in a north direction, if the geo-location is in a southern hemisphere, and each solar panel is tilted in zero degrees (flat), if the geo-location is exactly on a meridian line.

8. The system as claimed in claims 1 and 2, wherein a strip of the vertically extended sides of the reflectors are fixed into a second cutout (12) fabricated into the C-channel (3) and secured using a screw mechanism, wherein the panels (4) are fixed to the C-channels (3) and the panels (4) are secured using a U-clamp (5).

9. The system as claimed in claim 1, wherein the array of bifacial solar panels (4) simultaneously or individually tilt up to 45 degrees from its initial position to receive maximum sunlight to generate maximum power generation when mounted on a slanted rooftop/flat rooftop/water-floating flatforms, wherein the array of bifacial solar panels (4) tilt automatically or manually, wherein said bifacial solar panels (4) are manually tilted upon adjusting at least two swivel clamps attached to the bifacial solar panels (4) and raised pillar (7), wherein fastener is engaged with a rail of each raised pillar (7), and height of the fastener is adjusted from a top to bottom of the rail to adjust the tilt angle.

10. The system as claimed in claim 9, wherein the array of bifacial solar panels (4) tilt automatically by deploying an automatic solar tracking assembly, wherein the automatic solar tracking assembly comprises: a plurality of light-detecting resistors positioned to detect real-time light intensity; a controlling unit connected to the light-detecting resistors to calculate optimal panel tilt angle according to the geo-location; an actuator interconnected to the controlling unit and the array of bifacial solar panels (4) controlled by the controlling unit to dynamically adjust the tilt and azimuth angles of each panel for maximum sunlight exposure; and wherein the raised pillar (7) is preferably retractable and coupled mechanically to the actuator to tilt the bifacial solar panels (4).