Floating type offshore photovoltaic platform and offshore photovoltaic power generation system

Abstract

The invention relates to the technical field of power generation, and discloses a floating type offshore photovoltaic platform and an offshore photovoltaic power generation system, and the platform comprises a bottom housing, a light-transmitting cover, a supporting assembly, and a plurality of photovoltaic panels. The bottom shell is in a disc shape, the light-transmitting cover is in a hemispherical shape and covers the bottom shell, the bottom side edge of the light-transmitting cover is connected with the edge of the bottom shell, and a sealed containing space is defined between the bottom shell and the light-transmitting cover. The supporting assembly and the photovoltaic panels are all arranged in the containing space, the supporting assembly comprises a supporting column and a mounting frame, the mounting frame is arranged on the top face of the bottom shell, the mounting frame is provided with a mounting face, the photovoltaic panels are mounted on the mounting face at intervals, and the bottom of the supporting column is arranged at the center of the mounting frame and can be connected with the bottom shell; the top of the supporting column is detachably connected with the light-transmitting cover. The structure is simple, the stability of the device can be improved, and the service life of the photovoltaic panel can be prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of power generation, and particularly relates to a floating offshore photovoltaic platform and an offshore photovoltaic power generation system. Background Art

[0002] An offshore photovoltaic platform refers to a facility that installs photovoltaic panels on a sea surface floating body or a fixed structure to convert solar energy into electrical energy, including pile foundation fixed type and floating type. With the gradual rise of offshore photovoltaic projects globally, floating offshore photovoltaic platforms have been more widely used.

[0003] In the prior art, most floating offshore photovoltaic platforms adopt flexible thin film structures or semi-submersible truss structures. Among them, the flexible thin film structure is prone to overtopping waves and the main structure has weak strength. When the marine environment is relatively harsh, the photovoltaic panels and floating bodies are extremely easy to be damaged; while the semi-submersible truss structure provides limited buoyancy and requires additional floating cylinders or floating pipes to provide buoyancy. The floating cylinders or floating pipes are easy to be overturned by waves, resulting in the sinking of the semi-submersible truss structure, and the cost of the floating cylinders or floating pipes is relatively high, which is not conducive to large-scale popularization and use. Therefore, there is an urgent need to design a floating offshore photovoltaic platform with low cost and good stability. Summary of the Invention

[0004] The object of the present invention is to provide a floating offshore photovoltaic platform and an offshore photovoltaic power generation system to solve the problems mentioned in the background art.

[0005] To achieve the above object, the present application provides a floating offshore photovoltaic platform, including: a bottom shell, a light-transmitting cover, a support assembly, and a plurality of photovoltaic panels;

[0006] The bottom shell is in a disk shape, the light-transmitting cover is in a hemispherical shape, the light-transmitting cover covers the bottom shell, the bottom side edge of the light-transmitting cover is connected to the edge of the bottom shell, and a sealed accommodation space is defined between the bottom shell and the light-transmitting cover;

[0007] The support assembly and the plurality of photovoltaic panels are both arranged in the accommodation space. The support assembly includes: a support column and a mounting frame. The mounting frame is arranged on the top surface of the bottom shell. The mounting frame has a mounting surface, and the plurality of photovoltaic panels are spaced and installed on the mounting surface. The bottom of the support column is arranged at the center of the mounting frame and is connectable to the bottom shell, and the top of the support column is detachably connected to the light-transmitting cover.

[0008] As a preferred technical solution, the floating offshore photovoltaic platform further includes a floating assembly. The floating assembly is arranged on the outer periphery of the bottom shell, and the floating assembly is detachably connected to the base.

[0009] As a preferred technical solution, the floating component is an airbag, the airbag is annular, and is arranged around the outer periphery of the bottom shell.

[0010] As a preferred technical solution, the installation surface includes a first installation area and a second installation area. The first installation area is annular, and the second installation area is arranged around the second installation area. The photovoltaic panels laid on the first installation area are defined as the middle-ring photovoltaic panels, and the photovoltaic panels laid on the second installation area are defined as the outer-ring photovoltaic panels. The middle-ring photovoltaic panels are perpendicular to the support columns, and the outer-ring photovoltaic panels are gradually inclined downward from the side close to the support columns to the side away from the support columns.

[0011] As a preferred technical solution, the included angle between the outer-ring photovoltaic panels and the support columns is R1, R2 + 10° ≤ R1 ≤ R2 + 15°, where R2 is the latitude of the location where the floating offshore photovoltaic platform is located.

[0012] As a preferred technical solution, the mounting frame includes a bottom frame, a top frame and a plurality of support rods. The bottom frame is arranged on the top surface of the bottom shell. The top frame is arranged at intervals above the bottom frame and is arranged around the outer periphery of the support column. There is an annular interval between the top frame and the outer periphery of the support column. The two ends of each support rod are respectively connected to the bottom frame and the top frame. An annular groove surrounding the support column is defined between the inner peripheral side of the top frame, the inner peripheral surfaces of the plurality of support rods and the top surface of the bottom frame.

[0013] As a preferred technical solution, the support assembly further includes at least two groups of auxiliary support frames. The auxiliary support frames include a plurality of auxiliary support rods arranged at circumferential intervals along the outer periphery of the support column. The tops of the plurality of support frames are arranged at vertical intervals along the support column. The auxiliary support rods are arc-shaped, and the outer peripheral surface of one group of auxiliary support frames defines a hemispherical surface. The tops of the auxiliary support rods are all connected to the support column. The bottoms of the auxiliary support rods in at least one group of auxiliary support frames are connected to the position of the bottom frame located in the annular groove, and the bottoms of the auxiliary support rods in other auxiliary support frames are connected to the top frame.

[0014] As a preferred technical solution, the light-transmitting cover is a glass cover.

[0015] As a preferred technical solution, the bottom shell is made of one of glass fiber reinforced composite material, carbon fiber reinforced composite material or rubber.

[0016] The present application also provides an offshore photovoltaic power generation system, including: an energy storage device, a charging controller, an inverter, and a plurality of the above-mentioned floating offshore photovoltaic platforms. The plurality of floating offshore photovoltaic platforms are spaced on the sea surface, and two adjacent floating offshore photovoltaic platforms are connected by a cable. The charging controller is electrically connected to the energy storage device, the inverter, and the plurality of floating offshore photovoltaic platforms respectively.

[0017] For a floating offshore photovoltaic platform and an offshore photovoltaic power generation system provided by the above technical solution, compared with the prior art, the beneficial effects are as follows:

[0018] 1. A light-transmitting cover is provided to effectively protect the photovoltaic panel while not affecting the absorption of sunlight by the photovoltaic panel, avoiding damage to the photovoltaic panel caused by seawater or other external forces, and extending the service life of the photovoltaic panel;

[0019] 2. The bottom shell, the support assembly, and the light-transmitting cover form a stable structure, which can maintain the stability of the device at sea, ensure that sunlight can shine on the surface of the photovoltaic panel, and ensure the power generation effect. Description of the Drawings

[0020] The following further describes the present application in detail with reference to the drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are only drawn for the purpose of explaining the preferred embodiments and should not be used as a limitation of the scope of the present application. In addition, unless otherwise specified, the drawings are only intended to conceptually represent the composition or structure of the described object and may include exaggerated displays, and the drawings are not necessarily drawn to scale.

[0021] Figure 1 It is a cross-sectional view of the floating offshore photovoltaic platform of the present invention;

[0022] Figure 2 It is a partial structural schematic diagram of the floating offshore photovoltaic platform of the present invention;

[0023] Wherein: 1. Bottom shell; 2. Middle-ring photovoltaic panel; 3. Outer-ring photovoltaic panel; 4. Light-transmitting cover; 5. Floating assembly; 6. Support assembly; 61. Support column; 62. Mounting frame; 620. Bottom frame; 621. Top frame; 622. Support rod; 63. Auxiliary support frame; 630. Auxiliary support rod. Detailed Embodiments

[0024] The following will refer to the drawings to describe in detail the preferred embodiments of the present application. Those skilled in the art will understand that these descriptions are only descriptive and exemplary and should not be construed as limiting the protection scope of the present application.

[0025] First of all, it should be noted that the top, bottom, upward, downward and other orientations mentioned in this article are defined relative to the directions in each drawing. They are relative concepts and can therefore change according to their different positions and different practical states. Therefore, these or other orientations should not be used as restrictive terms for understanding.

[0026] It should be noted that the term "including" does not exclude other elements or steps, and "a" or "an" does not exclude a plurality.

[0027] In addition, it should also be pointed out that for any single technical feature described or implied in the embodiments of this article, or any single technical feature shown or implied in the drawings, combinations can still be continued between these technical features (or their equivalents) to obtain other embodiments of this application that are not directly mentioned in this article.

[0028] It should also be understood that in this article, terms such as "first" and "second" are used to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this application, "first" information can also be called "second" information, and similarly, "second" information can also be called "first" information.

[0029] The following will further describe in detail the specific implementation manners of the invention in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0030] Please refer to Figure 1-2 , a floating offshore photovoltaic platform provided by an embodiment of the present application, including: a bottom shell 1, a light-transmitting cover 4, a support assembly 6, and a plurality of photovoltaic panels;

[0031] The bottom shell 1 is disc-shaped, the light-transmitting cover 4 is hemispherical, the light-transmitting cover 4 covers the bottom shell 1, the bottom side edge of the light-transmitting cover 4 is connected to the edge of the bottom shell 1, and a sealed accommodation space is defined between the bottom shell 1 and the light-transmitting cover 4;

[0032] The support assembly 6 and the plurality of photovoltaic panels are both arranged in the accommodation space. The support assembly 6 includes: a support column 61 and a mounting frame 62. The mounting frame 62 is arranged on the top surface of the bottom shell 1. The mounting frame 62 has a mounting surface, and the plurality of photovoltaic panels are spaced apart and mounted on the mounting surface. The bottom of the support column 61 is arranged at the center of the mounting frame 62 and is connectable to the bottom shell 1, and the top of the support column 61 is detachably connected to the light-transmitting cover 4.

[0033] In this embodiment, the support column 61 and the mounting frame 62 together form the support assembly 6. The photovoltaic panel is laid on the mounting frame 62, and the light-transmitting cover 4 covers the bottom case 1, and the bottom side edge of the light-transmitting cover 4 is connected to the edge of the bottom case 1. In practical applications, sunlight passes through the light-transmitting cover 4 and shines on the photovoltaic panel, and the photovoltaic panel absorbs sunlight and converts solar energy into electrical energy. In addition, the light-transmitting cover 4 is arranged in a hemispherical shape, which is beneficial for the device to receive sunlight from all angles on the sea surface and maximize the utilization of sunlight resources. At the same time, the whole device is hemispherical, and the photovoltaic panel is arranged in the accommodating space, which can prevent overtopping waves and avoid seawater contacting the photovoltaic panel and the electrical system, resulting in equipment damage, affecting the power generation efficiency, and reducing the service life of the platform. In addition, the support assembly 6 provides effective support for the whole device, can withstand large external impacts, the overall structure of the device is simple, the manufacturing cost is low, and the stability is strong.

[0034] It should be noted that in this application, a glass cover is preferably used as the light-transmitting cover 4, and specifically, a highly weather-resistant double-layer coated glass or an ultra-thin and light photovoltaic glass is used to make the light-transmitting cover 4. Among them, the light-transmitting cover 4 made of highly weather-resistant double-layer coated glass has good corrosion resistance, light transmittance and anti-ultraviolet performance, can effectively block water vapor, prevent the precipitation of sodium and calcium ions, can resist the erosion of sea salt on the glass, extend the service life of the light-transmitting cover 4, and has a high light transmittance to allow sunlight to pass through to the greatest extent, meet the lighting requirements of the photovoltaic panel, help improve the power generation efficiency of the photovoltaic panel, and can effectively block ultraviolet rays to protect components such as photovoltaic cells inside the photovoltaic panel from ultraviolet damage. The light-transmitting cover 4 made of ultra-thin and light photovoltaic glass has the characteristics of strong impact resistance, excellent heat dissipation performance and light weight, can effectively resist external impacts, protect the integrity of the internal structure of the photovoltaic panel, and has good heat dissipation performance, reducing the problem of the decrease in the power generation efficiency of the photovoltaic panel caused by excessive temperature.

[0035] In some embodiments, the floating offshore photovoltaic platform further includes a floating assembly 5, the floating assembly 5 is arranged on the outer periphery of the bottom case 1, and the floating assembly 5 is detachably connected to the base. In this embodiment, an airbag is preferably used as the floating assembly 5, and the airbag is annular and arranged around the outer periphery of the bottom case 1. On the one hand, using airbags can effectively reduce costs, and the airbags have good buoyancy characteristics and can provide stable buoyancy support for the photovoltaic platform. Preferably, multiple airbags can be used, and through reasonable layout and connection methods, a whole floating structure is formed to improve the floating stability of the platform. On the other hand, the airbags are light in weight and small in volume, occupy little space during transportation, and have low costs. After reaching the installation site, it can be used after inflation, and the installation process is relatively simple and fast, which can effectively shorten the construction period. In addition, the airbag material usually has good corrosion resistance and anti-aging properties, and has little pollution to the marine environment. After the platform is decommissioned, the airbags are relatively easy to recycle and process, reducing the waste residue in the marine environment.

[0036] In some embodiments, the installation surface includes a first installation area and a second installation area. The first installation area is annular, and the second installation area is arranged around the first installation area. The photovoltaic panels laid on the first installation area are defined as the middle-ring photovoltaic panels 2, and the photovoltaic panels laid on the second installation area are defined as the outer-ring photovoltaic panels 3. The middle-ring photovoltaic panels 2 are perpendicular to the support columns 61, and the outer-ring photovoltaic panels 3 are gradually inclined downward from the side close to the support columns 61 to the side away from the support columns 61. Among them, the middle-ring photovoltaic panels 2 are used to receive sunlight from the vertical direction, and the outer-ring photovoltaic panels 3 are used to absorb sunlight from other directions, so as to realize the absorption and utilization of sunlight from all directions, and further improve the power generation efficiency of the device.

[0037] In some embodiments, the included angle between the outer-ring photovoltaic panels 3 and the support columns 61 is R1, and R2 + 10° ≤ R1 ≤ R2 + 15°, where R2 is the latitude of the location where the floating offshore photovoltaic platform is located. In winter, the direct sunlight point is located in the southern hemisphere, and the solar altitude angle is relatively low. Therefore, it is necessary to increase the inclination angle by 10° - 15° to make the outer-ring photovoltaic panels 3 more perpendicular to the winter sunlight, increase the received amount of solar radiation, and improve the power generation efficiency in winter; while in summer, the solar altitude angle is relatively high, but due to the relatively limited increase in the inclination angle, the outer-ring photovoltaic panels 3 can still receive sufficient solar radiation, and the summer sunshine time is long. Even if the inclination angle is slightly larger, the overall received solar energy is still considerable, and the received radiation amount will not be significantly reduced due to the angle problem; in spring and autumn, the direct sunlight point is near the equator. At this time, the inclination angle of the outer-ring photovoltaic panels 3 is the local latitude plus 10° - 15°, which can also ensure a good sunlight reception effect to a certain extent and make the annual power generation efficiency relatively balanced. Therefore, through this angle setting, the power generation in winter of the device is significantly improved, while the power generation in summer and spring and autumn will not be greatly affected, thereby improving the total annual power generation. And setting the inclination angle to the local latitude plus 10° - 15° can achieve a relatively stable power generation efficiency throughout the year without frequently adjusting the angle of the outer-ring photovoltaic panels 3, reducing the operation and maintenance cost and difficulty.

[0038] In some embodiments, the mounting frame 62 includes a bottom frame 620, a top frame 621, and a plurality of support rods 622. The bottom frame 620 is disposed on the top surface of the bottom case 1. The top frame 621 is spaced above the bottom frame 620 and is disposed around the outer periphery of the support column 61. There is an annular gap between the top frame 621 and the outer periphery of the support column 61. Two ends of each support rod 622 are respectively connected to the bottom frame 620 and the top frame 621. An annular groove surrounding the support column 61 is defined among the inner circumferential side of the top frame 621, the inner circumferential surfaces of the plurality of support rods 622, and the top surface of the bottom frame 620. The bottom frame 620, the top frame 621, and the plurality of support rods 622 form a stable structure of the mounting frame 62, enabling the photovoltaic panel to be firmly mounted thereon and ensuring that the position of the photovoltaic panel will not shift due to external force impact during actual use, ensuring light reception and achieving stable power generation efficiency.

[0039] In some embodiments, the support assembly 6 further includes at least two sets of auxiliary support frames 63. The auxiliary support frame 63 includes a plurality of auxiliary support rods 630 that are circumferentially spaced along the outer periphery of the support column 61. The tops of multiple sets of the support frames are vertically spaced along the support column 61. The auxiliary support rods 630 are arc-shaped, and the outer circumferential surface of one set of the auxiliary support frames 63 defines a hemispherical surface. The tops of the auxiliary support rods 630 are all connected to the support column 61. The bottoms of the auxiliary support rods 630 in at least one set of the auxiliary support frames 63 are connected to the bottom frame 620 at a position within the annular groove, and the bottoms of the auxiliary support rods 630 in the other auxiliary support frames 63 are connected to the top frame 621. The auxiliary support rods 630 are used to further fix the positions of the mounting frame 62 and the support column 61, ensuring that they will not shift during operation, thereby causing the photovoltaic panel mounted on the mounting frame 62 to shift and affecting the sunlight absorption efficiency of the photovoltaic panel. Moreover, the auxiliary support frames 63 further strengthen the connection strength of the support assembly 6 and further improve the stability of the device.

[0040] In some embodiments, the bottom shell 1 is made of one of glass fiber reinforced composite materials, carbon fiber reinforced composite materials or rubber. Among them, the glass fiber reinforced composite material has excellent seawater corrosion resistance, high strength and rigidity, good insulation performance and relatively low cost. Under the premise of meeting the performance requirements, it can effectively control the construction cost of the floating offshore photovoltaic platform and improve the economic efficiency of the project; the carbon fiber reinforced composite material has high strength and high rigidity, and its fatigue resistance is good, wear resistance, impact resistance, can withstand long-term wave impact and periodic load, reduce the possibility of structural fatigue damage, extend the service life of the platform, can resist the influence of external factors such as marine biological attachment and floating object impact, and protect the integrity and performance of the platform bottom shell 1; rubber has excellent flexibility and elasticity, can adapt to the ups and downs of the waves and the shaking of the platform, effectively buffer the impact of external forces, reduce damage to the platform structure, and has good sealing performance, can effectively prevent seawater from leaking into the bottom shell of the platform, and protect the electrical equipment and structural components of the platform from seawater erosion. In addition, some rubber materials can still maintain good performance in low temperature environments, which allows the floating offshore photovoltaic platform using the rubber bottom shell 1 to operate normally in cold waters and has a wide range of applications.

[0041] The present application also provides an offshore photovoltaic power generation system, comprising: an energy storage device, a charging controller, an inverter and a plurality of floating offshore photovoltaic platforms as described above, wherein the plurality of floating offshore photovoltaic platforms are arranged on the sea surface at intervals, and two adjacent floating offshore photovoltaic platforms are connected by cables, and the charging controller is electrically connected to the energy storage device, the inverter and the plurality of floating offshore photovoltaic platforms, respectively.

[0042] In this embodiment, the floating offshore photovoltaic platform is used to convert light energy into electrical energy, the charging controller is used to supply power to the load after a part of the converted electrical energy is converted by the inverter, and the remaining electrical energy is directly stored in the energy storage device. On the one hand, multiple floating offshore photovoltaic platforms are connected by cables to form an organic whole, working together to generate electricity. The charging controller, energy storage device and inverter cooperate with each other to achieve efficient management, storage and conversion of photovoltaic power generation, so that the entire system can operate stably and reliably, and improve the overall performance and efficiency of the system. On the other hand, multiple photovoltaic platforms are arranged at intervals and connected by cables. When some platforms fail or are damaged, other platforms can continue to work, providing a certain degree of redundancy and enhancing the reliability and risk resistance of the system.

[0043] In summary, the floating offshore photovoltaic platform and offshore photovoltaic power generation system provided in this embodiment have good structural strength and stability, simple overall structure, convenient assembly and low maintenance cost.

[0044] This specification discloses the present application with reference to the accompanying drawings, and also enables those skilled in the art to implement the present application, including manufacturing and using any device or system, adopting suitable materials, and using any combined methods. The scope of the present application is defined by the claimed technical solutions and includes other examples that occur to those skilled in the art. As long as such other examples include structural elements that are not different from the literal language of the claimed technical solutions, or such other examples contain equivalent structural elements that have no substantial difference from the literal language of the claimed technical solutions, such other examples should be considered to be within the scope of protection determined by the claimed technical solutions of the present application.

Claims

1. A floating offshore photovoltaic platform, characterized in that, Comprising: A bottom shell, a light-transmitting cover, a support assembly, and multiple photovoltaic panels; The bottom shell is disc-shaped, the light-transmitting cover is hemispherical, the light-transmitting cover is disposed on the bottom shell, the bottom side edge of the light-transmitting cover is connected to the edge of the bottom shell, and a sealed accommodation space is defined between the bottom shell and the light-transmitting cover; The support assembly and the multiple photovoltaic panels are both disposed in the accommodation space. The support assembly includes: a support column and a mounting frame. The mounting frame is disposed on the top surface of the bottom shell. The mounting frame has a mounting surface. The multiple photovoltaic panels are spaced apart and mounted on the mounting surface. The bottom of the support column is disposed at the center of the mounting frame and is connectable to the bottom shell, and the top of the support column is detachably connected to the light-transmitting cover.

2. The floating offshore photovoltaic platform according to claim 1, wherein, It further includes a floating assembly. The floating assembly is disposed on the outer periphery of the bottom shell, and the floating assembly is detachably connected to the base.

3. The floating offshore photovoltaic platform according to claim 2, wherein, The floating assembly is an airbag. The airbag is annular and is disposed around the outer periphery of the bottom shell.

4. The floating offshore photovoltaic platform according to claim 1, wherein The mounting surface includes a first mounting area and a second mounting area. The first mounting area is annular. The second mounting area is disposed surrounding the second mounting area. The photovoltaic panels laid on the first mounting area are defined as the middle-ring photovoltaic panels, and the photovoltaic panels laid on the second mounting area are defined as the outer-ring photovoltaic panels. The middle-ring photovoltaic panels are perpendicular to the support column, and the outer-ring photovoltaic panels are gradually inclined downward from the side close to the support column to the side away from the support column.

5. The floating offshore photovoltaic platform according to claim 4, wherein The included angle between the outer-ring photovoltaic panel and the support column is R1, R2 + 10° ≤ R1 ≤ R2 + 15°, where R2 is the latitude of the location where the floating offshore photovoltaic platform is located.

6. The floating offshore photovoltaic platform according to claim 4, wherein, The mounting frame includes a bottom frame, a top frame, and multiple support rods. The bottom frame is disposed on the top surface of the bottom shell. The top frame is spaced above the bottom frame and is disposed around the outer periphery of the support column, and there is an annular gap between the top frame and the outer periphery of the support column. The two ends of each support rod are respectively connected to the bottom frame and the top frame. An annular groove surrounding the support column is defined between the inner peripheral side of the top frame, the inner peripheral surfaces of the multiple support rods, and the top surface of the bottom frame.

7. The floating offshore photovoltaic platform according to claim 6, wherein, The support assembly further includes at least two groups of auxiliary support frames. The auxiliary support frames include multiple auxiliary support rods circumferentially spaced along the outer periphery of the support column. The tops of the multiple support frames are spaced up and down along the support column. The auxiliary support rods are arc-shaped, and the outer peripheral surface of one group of auxiliary support frames defines a hemispherical surface. The tops of the auxiliary support rods are all connected to the support column. The bottoms of the auxiliary support rods in at least one group of auxiliary support frames are connected to the position of the bottom frame located in the annular groove, and the bottoms of the auxiliary support rods in other auxiliary support frames are connected to the top frame.

8. The floating offshore photovoltaic platform according to claim 1, characterized in that, The light-transmitting cover is a glass cover.

9. The floating offshore photovoltaic platform according to claim 1, characterized in that, The bottom shell is made of one of glass fiber reinforced composite material, carbon fiber reinforced composite material, or rubber.

10. A marine photovoltaic power generation system, characterized in that, Comprising: Energy storage device, charging controller, inverter, and multiple floating offshore photovoltaic platforms as described in any one of claims 1-9. The multiple floating offshore photovoltaic platforms are spaced apart on the sea surface, and adjacent two of the floating offshore photovoltaic platforms are connected by cables. The charging controller is electrically connected to the energy storage device, the inverter, and the multiple floating offshore photovoltaic platforms respectively.

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