Sliding type anti-storm offshore floating photovoltaic-wave energy integrated device

Abstract

The invention discloses a sliding type anti-storm offshore floating photovoltaic-wave energy integrated device, and belongs to the technical field of offshore power generation. Which comprises a floating foundation, a sliding device is arranged on the upper half portion of the floating foundation, a photovoltaic device is arranged at the top of the sliding device, a wave energy power generation device is arranged at the bottom of the floating foundation, a semicircular groove is specifically formed in the top of the floating foundation, and the sliding device comprises a rail which is attached in the semicircular groove and provided with a rolling sliding shaft; by the adoption of the structure, a photovoltaic power generation device and a wave energy power generation device are combined through the floating type foundation, wave resistance and stabilization are considered, meanwhile, power generation can be achieved, interference of wind loads is reduced, the stability of the integrated device is improved, and the integrated device has the advantages of being simple in structure and convenient to use. The arc-shaped support is completely embedded with the floating foundation, and the coil of the wave energy power generation device is positioned in the floating foundation, so that the influence of wind wave load is reduced, and the service life of the integrated device is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of offshore power generation, and in particular to a sliding type wind and wave resistant offshore floating photovoltaic-wave energy integrated device. Background Art

[0002] Offshore photovoltaic power generation technology can effectively solve the problem that onshore solar photovoltaic power stations occupy more land resources and are far away from the power consumption center. Offshore solar photovoltaic platforms are mostly set up in open ocean waters. The floating photovoltaic floating body is a floating floating body, which is often affected by factors such as wind, waves, and currents, causing the floating floating body to make periodic and large pitching movements, causing the photovoltaic panels to deviate from the optimal light receiving direction, increasing the difficulty of automatic sunlight tracking, and thus reducing the power generation efficiency. Wave energy has a huge energy flow density, and its intensity is 15 to 20 times that of solar energy. At the same time, wave energy, as a widely distributed, pollution-free and huge marine renewable energy, has extremely high development potential and application value. However, the development and utilization of wave energy faces high construction costs, and its energy conversion efficiency is relatively low, resulting in high power generation costs. Therefore, a sliding-type wind and wave resistant offshore floating photovoltaic-wave energy integrated device that can resist waves and reduce rolling and easily adjust the elevation angle of photovoltaic panels is proposed. Summary of the invention

[0003] The purpose of the present invention is to provide a sliding type wind and wave resistant offshore floating photovoltaic-wave energy integrated device, which combines photovoltaic and wave energy power generation devices, and can generate electricity while taking into account wave resistance and roll reduction. The integrated device is easier to adjust the light receiving direction of the photovoltaic panel and can stabilize the orientation of the photovoltaic panel. The sliding device is located between the photovoltaic panel and the floating foundation and will not be disturbed by the wind load. There are fewer movable parts, which improves the stability of the integrated device. The photovoltaic panel and the arc-shaped bracket are completely embedded in the floating foundation, and the coil of the wave energy power generation device is located inside the floating foundation, which reduces the influence of wind and wave loads and extends the service life of the integrated device.

[0004] To achieve the above-mentioned object, the present invention provides a sliding type wind and wave resistant offshore floating photovoltaic-wave energy integrated device, comprising a floating foundation, the upper part of the floating foundation is provided with a sliding device, the top of the sliding device is provided with a photovoltaic device, and the bottom of the floating foundation is provided with a wave energy power generation device;

[0005] The top of the floating foundation is specifically configured as a semicircular groove, the sliding device comprises a track, the track is attached to the semicircular groove, a rolling shaft is arranged on the track, an arc bracket is arranged on the outer side of the rolling shaft, and the arc bracket is embedded in the semicircular groove.

[0006] Preferably, the photovoltaic device comprises a mounting plate, and the mounting plate is specifically arranged on the top plane of the arc-shaped bracket, and a photovoltaic panel is arranged inside the mounting plate.

[0007] Preferably, the wave energy power generation device includes a rectangular shell, the four side walls of the rectangular shell are configured as a sandwich structure, buffer blocks are provided at the end points of the sandwich structure, a slide is provided at the bottom of the sandwich structure, a permanent magnet is provided on the slide, the permanent magnet reciprocates along the slide, and a plurality of coils connected in series are provided inside the rectangular shell, and the coils are provided close to the sandwich structure.

[0008] Preferably, the sliding device, the floating foundation and the wave energy power generation device constitute a multi-floating photovoltaic system, and the restricted motion equation of the multi-floating photovoltaic system in the frequency domain is expressed as:

[0009]

[0010] In the above formula, ω represents the angular frequency of the incident wave; a = a jj and b = b jj is the 6n×6n additional mass matrix and radiation damping matrix; n is the total number of floating bodies; b vis is the viscosity damping matrix; k r is the water recovery matrix; k m is the equivalent mooring force stiffness matrix; b hinge and k hinge represent the damping and stiffness coefficients of the articulated connector, respectively; ξ is a 1×6n vector of the system motion response; F ex is the 6n×1 vector of the wave excitation force acting on the system; f L is the moment generated by the constraints between the floating bodies, which is a 5n×1 matrix; i represents the imaginary unit, C X represents the constraint matrix, is the transpose of the constraint matrix;

[0011] The constraint relationship of the system is expressed in the following matrix form:

[0012] C(X)=[C 1 X) C 2 (X) C 3 (X) C 4 X) C 5 X)] T =0;

[0013] Where: C i (X) indicates the five degrees of freedom constraints except pitch; C i (X) is the 5×6n linear constraint Jacobian matrix of C(X); C(X) and C i (X) by multi-body dynamics calculations;

[0014] The power equation for floating photovoltaics to capture solar energy in motion can be expressed as:

[0015]

[0016] In the above formula, B h , D h , G h are the direct, diffuse and reflected radiation irradiance on the horizontal plane respectively; θ β is the incident angle of solar radiation on the inclined plane; β is the inclination angle of the plane, both of which are determined by the pitch angle of the floating body;

[0017] The permanent magnet and photovoltaic form a multi-body system. The motion equation of the multi-body system is:

[0018]

[0019] Where M is the total mass of the integrated device, m is the mass of a permanent magnet, and A is the additional mass. are the displacement, velocity and acceleration of the floating body respectively. is the absolute acceleration of a permanent magnet, B 辐射 and B 粘性 are the radiation damping and viscous damping of the floating body, C 恢复 is the restoring coefficient of the floating body, is the force on the floating body in water, is the wind force on the floating body, F PTO总 is the sum of the permanent magnet PTO system and the buoyancy force, F PTOi is the force between a permanent magnet PTO system and the float, B i is the relative displacement of the force between a permanent magnet PTO system and the floating body, is the speed of movement between a permanent magnet PTO system and the floating body, X i is the displacement between a permanent magnet PTO system and the floating body, and i represents the i-th PTO system.

[0020] Therefore, the present invention adopts the above-mentioned sliding type wind and wave resistant offshore floating photovoltaic-wave energy integrated device, which has the following advantages:

[0021] (1) In the present invention, slideways are installed around the bottom of the floating foundation to increase the bottom area of ​​the floating foundation, play the role of a damping plate, attenuate the heave motion, and increase the stability of the integrated device. Under the action of waves, the permanent magnet reciprocates in the slideway, and the coil fixed inside the floating foundation cuts the magnetic flux lines to generate electricity, providing energy supplement for the integrated device and improving the power generation efficiency of the integrated device. The reverse pitch moment is formed by the movement of the permanent magnet, which can achieve the effect of anti-wave and anti-rolling, and improve the stability of photovoltaic power generation.

[0022] (2) In the present invention, compared with the traditional photovoltaic structure that uses four hydraulic support legs to adjust the elevation angle of the photovoltaic panel, the present invention only uses one rolling slide shaft, which has a simple structure and can reduce production costs. The four hydraulic support legs of the floating photovoltaic are exposed to the complex and harsh marine environment (high salt and high humidity), and are easily damaged. If one hydraulic support leg is damaged, it will affect the operation of the other hydraulic support legs, thereby affecting the change in the elevation angle of the photovoltaic panel. The sliding device of the present invention is simple and is not affected by wind, is not easy to be damaged, and reduces operation and maintenance costs.

[0023] (3) In the present invention, the photovoltaic panel is embedded in the arc-shaped bracket, and the photovoltaic panel is installed in the mounting plate, so that the photovoltaic panel is not affected by wind and wave loads, the possibility of the photovoltaic panel being overturned by wind loads is reduced, the photovoltaic panel is protected from seawater erosion, and the service life of the photovoltaic panel is increased.

[0024] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a general schematic diagram of a sliding type wind and wave resistant offshore floating photovoltaic-wave energy integrated device of the present invention;

[0026] Figure 2 It is a schematic diagram of a floating foundation in a sliding type wind and wave resistant offshore floating photovoltaic-wave energy integrated device of the present invention;

[0027] Figure 3 It is a schematic diagram of a sliding device in a sliding type wind and wave resistant offshore floating photovoltaic-wave energy integrated device of the present invention;

[0028] Figure 4 It is a schematic diagram of a wave energy power generation device in a sliding type wind and wave resistant offshore floating photovoltaic-wave energy integrated device of the present invention;

[0029] Figure numerals: 1. Photovoltaic device; 11. Photovoltaic panel; 12. Arc-shaped bracket; 13. Floating foundation; 21. Track; 22. Rolling slide shaft; 3. Wave energy power generation device; 31. Slide; 32. Permanent magnet; 33. Buffer block; 34. Coil. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations. The specific model specifications need to be selected and determined according to the actual specifications of the device, and the specific selection calculation structure adopts the existing technology in the field, so it will not be described in detail.

[0031] Example

[0032] like Figure 1-Figure 4 As shown, the present invention provides a sliding type wind and wave resistant offshore floating photovoltaic-wave energy integrated device, comprising a floating foundation 13, the upper part of the floating foundation 13 is provided with a sliding device, the top of the sliding device is provided with a photovoltaic device 1, and the bottom of the floating foundation 13 is provided with a wave energy power generation device 3;

[0033] The top of the floating foundation 13 is specifically configured as a semicircular groove, and the sliding device includes a track 21, the track 21 is attached to the semicircular groove, a rolling slide shaft 22 is provided on the track 21, and an arc-shaped bracket 12 is provided on the outer side of the rolling slide shaft 22. The arc-shaped bracket 12 is embedded in the semicircular groove, and the position and orientation of the arc-shaped bracket 12 can be changed by rolling the rolling slide shaft 22.

[0034] The photovoltaic device 1 includes a mounting plate, which is specifically arranged on the top plane of the arc-shaped bracket 12. A photovoltaic panel 11 is arranged inside the mounting plate. The photovoltaic panel 11 is arranged on the arc-shaped bracket to facilitate photovoltaic power generation and improve production capacity.

[0035] The wave energy power generation device 3 includes a rectangular shell, and the four side walls of the rectangular shell are all arranged as a sandwich structure. Buffer blocks 33 are arranged at the end points of the sandwich structure. A slideway 31 is arranged at the bottom of the sandwich structure. A permanent magnet 32 ​​is arranged on the slideway 31. The permanent magnet 32 ​​reciprocates along the slideway 31. A plurality of coils 34 connected in series are arranged inside the rectangular shell. The coil 34 is arranged close to the sandwich structure. The permanent magnet 32 ​​can generate electricity by passing through the coil 34 during the sliding process. At the same time, the movement process of the permanent magnet 32 ​​can reduce the shaking amplitude of the device, thereby realizing the protection of the floating foundation.

[0036] The sliding device, floating foundation and wave energy power generation device constitute a multi-floating photovoltaic system. The restricted motion equation of the multi-floating photovoltaic system in the frequency domain is expressed as:

[0037]

[0038] In the above formula, ω represents the angular frequency of the incident wave; a = a jj and b = b jjis the 6n×6n additional mass matrix and radiation damping matrix; n is the total number of floating bodies; b vis is the viscosity damping matrix; k r is the water recovery matrix; k m is the equivalent mooring force stiffness matrix; b hinge and k hinge represent the damping and stiffness coefficients of the articulated connector, respectively; ξ is a 1×6n vector of the system motion response; F ex is the 6n×1 vector of the wave excitation force acting on the system; f L is the moment generated by the constraints between the floating bodies, which is a 5n×1 matrix; i represents the imaginary unit, C X represents the constraint matrix, is the transpose of the constraint matrix; the constraint relationship of the system is expressed in the following matrix form:

[0039] C(X)=[C 1 (X) C 2 (X) C 3 (X) C 4 (X) C 5 (X)] T =0;

[0040] Where: C i (X) indicates the five degrees of freedom constraints except pitch; C i (X) is the 5×6n linear constraint Jacobian matrix of C(X); C(X) and C i (X) by multi-body dynamics calculations;

[0041] The power equation for floating photovoltaics to capture solar energy in motion can be expressed as:

[0042]

[0043] In the above formula, B h , D h , G h are the direct, diffuse and reflected radiation irradiance on the horizontal plane respectively; θ β is the incident angle of solar radiation on the inclined plane; β is the inclination angle of the plane, both of which are determined by the pitch angle of the floating body;

[0044] The permanent magnet and photovoltaic form a multi-body system. The motion equation of the multi-body system is:

[0045]

[0046] Where M is the total mass of the integrated device, m is the mass of a permanent magnet, and A is the additional mass. are the displacement, velocity and acceleration of the floating body respectively. is the absolute acceleration of a permanent magnet, B 辐射 and B 粘性 are the radiation damping and viscous damping of the floating body, C 恢复 is the restoring coefficient of the floating body, is the force on the floating body in water, is the wind force on the floating body, F PTO总 is the sum of the permanent magnet PTO system and the buoyancy force, F PTOi is the force between a permanent magnet PTO system and the float, B i is the relative displacement of the force between a permanent magnet PTO system and the floating body, is the speed of movement between a permanent magnet PTO system and the floating body, X i is the displacement between a permanent magnet PTO system and the floating body, and i represents the i-th PTO system.

[0047] The specific use process is as follows: As the sun moves, the sunlight automatic tracking system controls the rolling slide shaft to drive the arc bracket and the photovoltaic panel fixed on it to move on the embedded track to adjust the elevation angle of the photovoltaic panel, so that the photovoltaic panel is located in the best light receiving direction, increasing the power generation efficiency of the water photovoltaic. At night, when the water photovoltaic stops working, the rolling slide shaft is controlled to drive the arc bracket and the photovoltaic panel fixed on it to move through the embedded track into the groove of the floating foundation, so that the arc bracket is completely matched with the floating foundation, reducing the impact of wind and wave loads on the photovoltaic panel and improving the stability of the floating photovoltaic body.

[0048] Under the action of wave loads, the permanent magnets make reciprocating motion in the slide. The buffer blocks located at the four corners of the slide act as buffers for the permanent magnets. The coils cut the magnetic lines of flux to generate electricity, forming a reverse pitch torque, reducing the heaving motion of the integrated device, achieving the effect of resisting waves and reducing roll, and improving the stability of photovoltaic power generation.

[0049] Therefore, the present invention adopts a sliding type wind and wave resistant offshore floating photovoltaic-wave energy integrated device, which combines photovoltaic and wave energy power generation devices, and can generate electricity while taking into account wave resistance and roll reduction. The integrated device is easier to adjust the light receiving direction of the photovoltaic panel and can stabilize the orientation of the photovoltaic panel, thereby improving the stability of the integrated device. The photovoltaic panel and the arc-shaped bracket are fully embedded in the floating body, and the coil of the wave energy power generation device is located inside the floating body, which reduces the impact of wind and wave loads and extends the service life of the integrated device.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A sliding type wind and wave resistant offshore floating photovoltaic-wave energy integrated device, characterized in that: It comprises a floating foundation, wherein the upper part of the floating foundation is provided with a sliding device, the top of the sliding device is provided with a photovoltaic device, and the bottom of the floating foundation is provided with a wave energy power generation device; The top of the floating foundation is specifically configured as a semicircular groove, the sliding device comprises a track, the track is attached to the semicircular groove, a rolling shaft is arranged on the track, an arc bracket is arranged on the outer side of the rolling shaft, and the arc bracket is embedded in the semicircular groove.

2. A sliding type wind and wave resistant offshore floating photovoltaic-wave energy integrated device according to claim 1, characterized in that: The photovoltaic device comprises a mounting plate, which is specifically arranged on the top plane of the arc-shaped bracket, and a photovoltaic panel is arranged inside the mounting plate.

3. A sliding type wind and wave resistant offshore floating photovoltaic-wave energy integrated device according to claim 2, characterized in that: The wave energy power generation device includes a rectangular shell, the four side walls of the rectangular shell are all arranged as a sandwich structure, buffer blocks are arranged at the end points of the sandwich structure, a slide is arranged at the bottom of the sandwich structure, a permanent magnet is arranged on the slide, and the permanent magnet reciprocates along the slide, and a plurality of coils connected in series are arranged inside the rectangular shell, and the coils are arranged close to the sandwich structure.

4. The sliding type wind and wave resistant offshore floating photovoltaic-wave energy integrated device according to claim 3 is characterized by: The sliding device, floating foundation and wave energy power generation device constitute a multi-floating photovoltaic system. The restricted motion equation of the multi-floating photovoltaic system in the frequency domain is expressed as: In the above formula, ω represents the angular frequency of the incident wave; a = a jj and b = b jj is the 6n×6n additional mass matrix and radiation damping matrix; n is the total number of floating bodies; b vis is the viscosity damping matrix; k r is the water recovery matrix; k m is the equivalent mooring force stiffness matrix; b hinge and k hinge represent the damping and stiffness coefficients of the articulated connector, respectively; ξ is a 1×6n vector of the system motion response; F ex is the 6n×1 vector of the wave excitation force acting on the system; f L is the moment generated by the constraints between the floating bodies, which is a 5n×1 matrix; i represents the imaginary unit, C X represents the constraint matrix, is the transpose of the constraint matrix; The constraint relationship of the system is expressed in the following matrix form: C(X)=[C1(X) C2(X) C3(X) C4(X) C5(X)] T =0; Where: C i (X) indicates the five degrees of freedom constraints except pitch; C i (X) is the 5×6n linear constraint Jacobian matrix of C(X); C(X) and C i (X) by multi-body dynamics calculations; The power equation for floating photovoltaics to capture solar energy in motion can be expressed as: In the above formula, B h , D h , G h are the direct, diffuse and reflected radiation irradiance on the horizontal plane respectively; θ β is the incident angle of solar radiation on the inclined plane; β is the inclination angle of the plane, both of which are determined by the pitch angle of the floating body; The permanent magnet and photovoltaic form a multi-body system. The motion equation of the multi-body system is: Where M is the total mass of the integrated device, m is the mass of a permanent magnet, and A is the additional mass. are the displacement, velocity and acceleration of the floating body respectively. is the absolute acceleration of a permanent magnet, B 辐射 and B 粘性 are the radiation damping and viscous damping of the floating body, C 恢复 is the restoring coefficient of the floating body, is the force on the floating body in water, is the wind force on the floating body, F PTO总 is the sum of the permanent magnet PTO system and the buoyancy force, F PTOi is the force between a permanent magnet PTO system and the float, B i is the relative displacement of the force between a permanent magnet PTO system and the floating body, is the speed of movement between a permanent magnet PTO system and the floating body, X i is the displacement between a permanent magnet PTO system and the floating body, and i represents the i-th PTO system.

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