Wind and wave energy combined power generation device and control method

Abstract

The present invention discloses a wind and wave energy combined power generation device and a control method, comprising a wind turbine generator set, a semi-submersible floating platform and a wave energy device; the semi-submersible floating platform comprises a Y-shaped base body and three connecting plates; the three end points of the upper part of the Y-shaped base body are connected by the three connecting plates; the wave energy device is mounted on the connecting plates via an upper hinge sleeve, and the wave energy device is used to convert wave energy into electrical energy; the wind turbine generator set is mounted at the center point of the Y-shaped base body, and the wind turbine generator set is used to convert wind energy into electrical energy; the present invention solves the technical problem that the wave energy power generation devices in the existing semi-submersible wind and wave combined power generation devices are all tightly connected to the floating platform, and the angle between the wave energy power generation device and the incoming wave direction cannot be flexibly adjusted, resulting in the wave energy power generation device being difficult to achieve long-term and efficient capture of wave energy.

Description

Technical Field

[0001] The present invention relates to the technical field of renewable energy utilization and marine engineering equipment, and in particular to a wind and wave energy combined power generation device and a control method. Background Art

[0002] As offshore wind power development reaches saturation, offshore wind power development is trending toward deep-sea, floating systems. However, the harsh sea conditions in the deep sea place more stringent design requirements on turbine foundations, mooring systems, and submarine cables. This results in high costs per kilowatt-hour for floating wind turbines and poor safety and stability, severely restricting the development of deep-sea wind energy resources. At the same time, offshore wind power and wave power are highly complementary, significantly improving the stability of offshore wind power output. Efficiently combining offshore wind power and wave power would benefit the marine economy, reduce emissions, and improve the environment.

[0003] Currently, existing wave energy power generation devices are primarily pendulum-type wave energy devices, primarily including eagle-type and dolphin-type devices. The direction of wave propagation in complex sea conditions is random and uncertain, and the angle between the wave energy generator and the incoming wave direction is a key factor affecting the energy capture efficiency of wind-wave combined power generation devices. However, the wave energy generators in existing semi-submersible wind-wave combined power generation devices are all rigidly connected to the floating platform, making it impossible to flexibly adjust the angle between the wave energy generator and the incoming wave direction. This makes it difficult for the wave energy generators to achieve long-term and efficient wave energy capture. Summary of the Invention

[0004] The present invention provides a wind and wave energy combined power generation device and a control method, which solves the technical problem that the wave energy power generation devices in existing semi-submersible wind and wave combined power generation devices are all tightly connected to the floating platform, and the angle between the wave energy power generation device and the incoming wave direction cannot be flexibly adjusted, which makes it difficult for the wave energy power generation device to achieve long-term and efficient capture of wave energy.

[0005] The present invention provides a wind and wave energy combined power generation device, comprising a wind turbine generator set, a semi-submersible floating platform and a wave energy device;

[0006] The semi-submersible floating platform includes a Y-shaped base and three connecting plates;

[0007] The three end points of the upper part of the Y-shaped seat are connected by three connecting plates;

[0008] The wave energy device is mounted on the connecting plate via an upper hinge sleeve, and the wave energy device is used to convert wave energy into electrical energy;

[0009] The wind turbine generator set is installed at the center point of the Y-shaped base body, and the wind turbine generator set is used to convert wind energy into electrical energy.

[0010] Optionally, the Y-shaped seat body includes three seat body connecting blocks and three fixing blocks;

[0011] The seat body connecting block is a rectangular structure with a hollow center;

[0012] One ends of the three seat body connecting blocks are connected to each other, and the other ends of the three seat body connecting blocks are respectively provided with the fixing blocks;

[0013] The fixing block is a semi-conical structure.

[0014] Optionally, the wave energy device comprises a plurality of wave energy mechanisms and oscillating buoys;

[0015] The bottom ends of the plurality of wave energy mechanisms are connected to the oscillating floating plate, and the plurality of wave energy mechanisms are arranged in parallel;

[0016] The upper hinge sleeve includes an upper hinge seat and a hinge connecting rod;

[0017] The upper hinge shaft seat is provided on the connecting plate;

[0018] The upper hinge shaft seat is provided with hinge shaft slots having the same number as the wave energy mechanism;

[0019] A plurality of traction arms of the wave energy mechanism are installed in the hinge shaft groove through the hinge shaft connecting rod.

[0020] Optionally, the wave energy mechanism comprises a lower hinge sleeve and the traction arm;

[0021] The lower hinge sleeve includes a lower hinge seat and a threaded pin;

[0022] The bottom of the lower hinge seat is fixedly connected to the upper end surface of the oscillating floating plate;

[0023] The bottom end of the traction arm is fixedly connected to the lower hinge shaft seat through the threaded pin;

[0024] A hydraulic rod is provided at the top end of the traction arm;

[0025] The hydraulic rod passes through the connecting plate and is movably connected to the hydraulic cylinder. The hydraulic rod is used to perform work on the hydraulic system.

[0026] Optionally, the fixed block is provided with the hydraulic system, which includes the hydraulic cylinder, accumulator, hydraulic motor and hydraulic generator;

[0027] The hydraulic cylinder is connected to the accumulator, and the accumulator is used to receive the hydraulic oil compressed by the hydraulic cylinder and convert it into pressure potential energy;

[0028] The accumulator is connected to the hydraulic motor, and the hydraulic motor is used to convert the pressure potential energy into kinetic energy;

[0029] The hydraulic motor is connected to the hydraulic generator via a hydraulic connecting rod, and the hydraulic generator is used to convert the kinetic energy into electrical energy.

[0030] Optionally, the oscillating floating plate includes an upper floating block and a lower floating block;

[0031] The bottom of the upper floating block is fixedly connected to the upper end surface of the lower floating block;

[0032] The floating block is a rounded rectangular structure with a hollow center;

[0033] The cross section of the floating block is an inverted triangle or an inverted isosceles trapezoid.

[0034] Optionally, the three end points of the Y-shaped seat are rounded structures.

[0035] Optionally, the wind turbine generator set is a horizontal axis wind turbine generator set.

[0036] Optionally, the horizontal axis wind turbine generator set includes blades, a nacelle and a tower;

[0037] The bottom of the tower is fixedly connected to the central connection of the Y-shaped base;

[0038] The nacelle is installed on the top of the tower;

[0039] A horizontal axis wind turbine is arranged in the nacelle, and a rotor of the horizontal axis wind turbine is connected to the blades.

[0040] A second aspect of the present invention provides a control method for the above-mentioned wind and wave energy combined power generation device, wherein the wind and wave energy combined power generation device includes a wind turbine, a semi-submersible floating platform, and a wave energy device, wherein the semi-submersible floating platform includes a Y-shaped base and three connecting plates. The method includes:

[0041] Install the wind turbine generator set at the center point of the Y-shaped base;

[0042] Installing the wave energy device on the connecting plate through an upper hinge sleeve;

[0043] When wind load acts on the blades in the wind turbine, the horizontal axis wind turbine is driven to rotate, converting wind energy into electrical energy;

[0044] When wave load acts on the oscillating floating plate in the wave energy device, it drives the traction arm to move up and down, converting the wave energy into electrical energy.

[0045] It can be seen from the above technical solutions that the present invention has the following advantages:

[0046] The wave energy device is coupled with a megawatt-class wind turbine and installed on a semi-submersible floating platform. The wave energy device has high wave energy capture efficiency. The combination of the two can achieve the comprehensive capture and integrated utilization of wind and wave energy.

[0047] The semi-submersible floating platform used in the combined wind and wave energy power generation device is a new type of semi-submersible floating platform. Its main body is a Y-shaped structure, composed of three square plates of the same shape with a hollow center. A horizontal connecting plate is designed on the upper part of the floating platform for installing a new type of oscillating floating plate wave energy device.

[0048] The wave energy device used in wind and wave combined power generation is a new type of oscillating floating plate wave energy device. When it is acted upon by wave force, the traction arm is driven up and down by the lower hinge sleeve. When the traction arm moves up and down, it drives the upper sleeve to work on the hydraulic system, converting wave energy into hydraulic energy and then realizing electrical energy conversion. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0050] Figure 1 A front view of a wind and wave energy combined power generation device provided by an embodiment of the present invention;

[0051] Figure 2 A side view of a wind and wave energy combined power generation device provided by an embodiment of the present invention;

[0052] Figure 3 A top view of a wind and wave energy combined power generation device provided by an embodiment of the present invention;

[0053] Figure 4 A front view of a semi-submersible floating platform provided in an embodiment of the present invention;

[0054] Figure 5 A side view of a semi-submersible floating platform provided in an embodiment of the present invention;

[0055] Figure 6 A top view of a semi-submersible floating platform provided in an embodiment of the present invention;

[0056] Figure 7 A front view of a wave energy device provided by an embodiment of the present invention;

[0057] Figure 8A side view of a wave energy device provided by an embodiment of the present invention;

[0058] Figure 9 A top view of a wave energy device provided by an embodiment of the present invention;

[0059] Figure 10 A flowchart of the steps of a control method for a combined wind and wave energy power generation device provided by an embodiment of the present invention;

[0060] The meanings of the reference numerals are as follows:

[0061] 1. Blade; 2. Nacelle; 3. Tower; 4. Upper hinge sleeve; 5. Traction arm; 6. Lower hinge sleeve; 7. Oscillation float; 8. Semi-submersible floating platform; 9. Base connecting block; 10. Connecting plate; 11. Hydraulic rod. DETAILED DESCRIPTION

[0062] An embodiment of the present invention provides a wind and wave energy combined power generation device and a control method, which are used to solve the technical problem that the wave energy power generation devices in existing semi-submersible wind and wave combined power generation devices are all tightly connected to the floating platform, and the angle between the wave energy power generation device and the incoming wave direction cannot be flexibly adjusted, resulting in the wave energy power generation device being difficult to achieve long-term and efficient capture of wave energy.

[0063] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, 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 embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0064] See also Figure 1-3 , Figure 1 A front view of a wind and wave energy combined power generation device provided by an embodiment of the present invention;

[0065] Figure 2 A side view of a wind and wave energy combined power generation device provided by an embodiment of the present invention;

[0066] Figure 3 A top view of a wind and wave energy combined power generation device provided by an embodiment of the present invention;

[0067] The present invention provides a wave energy and wind energy combined power generation device, which includes a wind turbine, a semi-submersible floating platform 8 and a wave energy device; the semi-submersible floating platform 8 includes a Y-shaped base and three connecting plates 10; the three end points of the upper part of the Y-shaped base are connected by three connecting plates 10; the wave energy device is installed on the connecting plate 10 through an upper hinge sleeve 4, and the wave energy device is used to convert wave energy into electrical energy; the wind turbine is installed at the center point of the Y-shaped base, and the wind turbine is used to convert wind energy into electrical energy.

[0068] It should be noted that the semi-submersible floating platform 8 includes a Y-shaped base body and three connecting plates 10. The three end points of the upper part of the Y-shaped base body are connected by three connecting plates 10. The upper part of the semi-submersible floating platform 8 forms an equilateral triangle structure. The wave energy device is installed on the connecting plate 10 through the upper hinge sleeve 4. The wave energy device converts wave energy into electrical energy. The wind turbine is installed at the center point of the Y-shaped base body. The wind energy is converted into electrical energy through the wind turbine. Under the action of wave loads, the wave energy device converts wave energy into electrical energy. Part of the converted electrical energy can be stored in an external electrical energy storage device. At the same time, the converted electrical energy will provide working power for various electrical equipment in the wave energy-wind energy combined power generation device, and the other part is transmitted to the power grid through the transmission system for use by land users.

[0069] It is worth mentioning that by installing the wind turbine at the center point of the Y-shaped seat, the pressure distribution of the wave energy-wind energy combined power generation device when subjected to the combined action of wind and wave loads is more uniform, which can minimize the impact of wind and waves on the unit and improve the unit's anti-overturning ability. At the same time, the Y-shaped design of the semi-submersible floating platform 8 can also improve stability and self-stabilization capabilities, further ensuring the safety and reliability of the unit. In order to improve the safety and reliability of wind turbines, reduce maintenance costs, and promote the development and utilization of wind energy resources; the wave energy device is installed on the three connecting plates 10 of the semi-submersible floating platform 8 through the upper hinge sleeve 4, so that the weight distribution of the wave energy-wind energy combined power generation device is more balanced, the motion stability and structural safety of the wave energy-wind energy combined power generation device are improved, the unstable factors are reduced, and the motion stability and service life of the wave energy-wind energy combined power generation device are greatly improved. Not only can the power generation efficiency be improved, but the maintenance and replacement cycle of the wave energy-wind energy combined power generation device can also be reduced.

[0070] It is worth mentioning that the three endpoints of the upper portion of the Y-shaped base are connected by three connecting plates 10, forming an equilateral triangle structure on the upper portion of the semi-submersible floating platform 8. This provides better stability and reduces the impact of waves on the wave-wind power generation device. Furthermore, the connecting plates 10 in the present invention are rectangular plates, which can better utilize the platform space, increase the number of wave energy devices, and improve energy collection efficiency. The installation of wave energy devices on three sides facilitates maintenance and repair, reducing maintenance costs. The installation of multiple wave energy devices fully utilizes ocean energy without generating pollution or carbon dioxide emissions, thus achieving environmental and energy-saving advantages.

[0071] The present invention can solve the following problems:

[0072] The wave energy power generation devices in existing semi-submersible wind-wave combined power generation devices are all tightly connected to the floating platform, and the angle between the wave energy power generation device and the incoming wave direction cannot be flexibly adjusted, making it difficult for the wave energy power generation device to achieve long-term and efficient capture of wave energy.

[0073] Existing buoy-type wave energy devices mainly absorb wave energy through single or multiple small buoys. The volume of the floating body and the wave-receiving area used are small, and the wave energy utilization efficiency is relatively low.

[0074] The present invention mainly involves installing a large-scale new oscillating floating plate 7-type wave energy device and a megawatt-class wind turbine on a new semi-submersible floating platform 8. The wave energy device has a high wave energy capture efficiency. Combining it with the wind turbine can achieve efficient capture and comprehensive utilization of wind energy and wave energy. More importantly, the wave energy device of the wave energy-wind energy combined power generation device of the present invention has higher power generation power and energy utilization efficiency.

[0075] See also Figure 4-6 , Figure 4 A front view of a semi-submersible floating platform 8 provided in an embodiment of the present invention;

[0076] Figure 5 A side view of a semi-submersible floating platform 8 provided in an embodiment of the present invention;

[0077] Figure 6 A top view of a semi-submersible floating platform 8 provided in an embodiment of the present invention;

[0078] The present invention provides a wave energy and wind energy combined power generation device, wherein the Y-shaped seat body includes three seat body connecting blocks 9 and three fixed blocks; the seat body connecting block 9 is a rectangular structure with a hollow center; one ends of the three seat body connecting blocks 9 are connected to each other, and the other ends of the three seat body connecting blocks 9 are respectively provided with fixed blocks; the fixed blocks are semi-conical structures.

[0079] It should be noted that the Y-type seat includes three seat connection blocks 9 and three fixed blocks. The seat connection block 9 is a rectangular structure with a hollow center. In the present invention, the seat connection block 9 is a square plate. The three hollow square plates are centered at any point to connect one end of the three seat connection blocks 9 to each other and are integrated. The outward ends of the three seat connection blocks 9 are respectively provided with fixed blocks, and the fixed blocks are semi-conical structures. The semi-conical structure can reduce stress concentration in seawater, thereby improving the strength and durability of the structure. Secondly, the semi-conical structure can reduce the resistance of the fluid during the flow process and improve the flow efficiency of the fluid. In addition, the semi-conical structure can also reduce noise and vibration, and improve the stability and reliability of the device. Therefore, in engineering design, the rational application of the semi-conical structure can improve the performance and quality of the Y-type seat, reduce maintenance costs and failure rates.

[0080] See also Figure 7-9 , Figure 7 A front view of a wave energy device provided by an embodiment of the present invention;

[0081] Figure 8 A side view of a wave energy device provided by an embodiment of the present invention;

[0082] Figure 9 A top view of a wave energy device provided by an embodiment of the present invention;

[0083] The present invention provides a wave energy and wind energy combined power generation device, which includes multiple wave energy mechanisms and an oscillating floating plate 7; the bottom ends of the multiple wave energy mechanisms are connected to the oscillating floating plate 7, and the multiple wave energy mechanisms are arranged in parallel; the upper hinge sleeve 4 includes an upper hinge seat and a hinge connecting rod; the connecting plate 10 is provided with an upper hinge seat; the upper hinge seat is provided with hinge grooves equal to the number of wave energy mechanisms; the traction arms 5 of the multiple wave energy mechanisms are installed in the hinge grooves through the hinge connecting rod.

[0084] It should be noted that the wave energy device includes multiple wave energy mechanisms and oscillating floats 7. The number of wave energy mechanisms can be set according to the size and needs of the connecting plate 10. The bottom ends of the multiple wave energy mechanisms are connected to the oscillating float 7, and the multiple wave energy mechanisms are arranged in parallel. The upper hinge sleeve 4 includes an upper hinge seat and a hinge connecting rod; the connecting plate 10 is provided with an upper hinge seat; the upper hinge seat is provided with hinge grooves equal to the number of wave energy mechanisms; there is only one hinge connecting rod, which is passed through both sides of multiple traction arms 5 on the same horizontal plane through the hinge connecting rod, and the traction arm 5 is installed in the hinge groove, which can achieve that under the action of wave load, multiple traction arms 5 can move up and down at the same time, thereby improving the conversion efficiency.

[0085] See also Figure 1-3 and Figure 7-9The present invention provides a wave energy and wind energy combined power generation device, the wave energy mechanism includes a lower hinge sleeve 6 and a traction arm 5; the lower hinge sleeve 6 includes a lower hinge shaft seat and a threaded pin; the bottom of the lower hinge shaft seat is fixedly connected to the upper end surface of the oscillation floating plate 7; the bottom end of the traction arm 5 is fixedly connected to the lower hinge shaft seat through a threaded pin; a hydraulic rod 11 is provided at the top of the traction arm 5; the hydraulic rod 11 penetrates the connecting plate 10 and is movably connected to the hydraulic cylinder, and the hydraulic rod 11 is used to perform work on the hydraulic system.

[0086] It should be noted that the wave energy mechanism includes a lower hinge sleeve 6 and a traction arm 5. The lower hinge sleeve 6 includes a lower hinge seat and a threaded pin. The bottom of the lower hinge seat is fixedly connected to the upper end surface of the oscillating float 7. The bottom end of the traction arm 5 is fixedly connected to the lower hinge seat via a threaded pin. When subjected to wave loads, the traction arm 5 moves up and down through the lower hinge sleeve 6. This movement drives the hydraulic rod 11 to perform work on the hydraulic cylinder. The traction arm 5 has a curved structure, which is more suitable for wave propulsion and helps improve work efficiency.

[0087] The present invention provides a wave energy and wind energy combined power generation device, in which a hydraulic system is arranged inside a fixed block, and the hydraulic system includes a hydraulic cylinder, an accumulator, a hydraulic motor and a hydraulic generator; the hydraulic cylinder is connected to the accumulator, and the accumulator is used to receive the hydraulic oil compressed by the hydraulic cylinder and convert it into pressure potential energy; the accumulator is connected to the hydraulic motor, and the hydraulic motor is used to convert the pressure potential energy into kinetic energy; the hydraulic motor is connected to the hydraulic generator through a hydraulic connecting rod, and the hydraulic generator is used to convert the kinetic energy into electrical energy.

[0088] It should be noted that when the traction arm 5 moves up and down, it drives the hydraulic rod 11 to do work on the hydraulic cylinder, prompting the hydraulic cylinder to compress the oil into the accumulator, and converting the kinetic energy of the waves into pressure potential energy; when the accumulator pressure reaches the specified value, it drives the hydraulic motor to rotate, and converts the pressure potential energy of the accumulator into the kinetic energy of the hydraulic motor; when the hydraulic motor is running, it drives the hydraulic generator to generate electricity through the hydraulic connecting rod, and converts the kinetic energy of the hydraulic motor into electrical energy and integrates it into the power grid.

[0089] See also Figure 7-9 The present invention provides a wave energy and wind energy combined power generation device, in which the oscillating floating plate 7 includes an upper floating block and a lower floating block; the bottom of the upper floating block is fixedly connected to the upper end surface of the lower floating block; the upper floating block is a rounded rectangular structure with a hollow middle part; the cross section of the lower floating block is an inverted triangle or an inverted isosceles trapezoid.

[0090] It should be noted that the upper floating block is a rounded rectangular structure with a hollowed-out middle portion. The use of rounded corner transitions can reduce stress concentration, thereby improving the strength and durability of the structure. Secondly, the rounded corner transition can reduce the resistance of the fluid during the flow process and improve the flow efficiency of the fluid. In addition, the rounded corner transition can also reduce noise and vibration, and improve the stability and reliability of the device. Therefore, in engineering design, the rational application of rounded corner transitions can improve the performance and quality of the device, reduce maintenance costs and failure rates. The cross-section of the lower floating block is an inverted triangle or an inverted isosceles trapezoid. The lower floating block can be an inverted triangular prism structure or an inverted isosceles trapezoidal column structure, which is a gradual structure in which the cross-sectional width or length gradually decreases from top to bottom.

[0091] It's worth noting that the wave energy device's arc-shaped bottom enhances energy capture efficiency. This arc-shaped bottom allows for smoother movement of the entire structure, reducing drag and thus improving energy capture efficiency. Furthermore, the arc-shaped bottom reduces wear and tear caused by uneven force distribution, thereby increasing the durability and service life of the entire structure. This structure will provide a more efficient and reliable solution for energy capture equipment and technologies in various fields.

[0092] See also Figure 1-3 The present invention provides a wave energy and wind energy combined power generation device, in which the three end points of the Y-shaped seat body are rounded structures.

[0093] It's important to note that the three endpoints of the Y-shaped seat feature rounded corners. The use of rounded corners reduces stress concentration, thereby improving the strength and durability of the structure. Furthermore, rounded corners reduce resistance during fluid flow, improving fluid flow efficiency. Furthermore, rounded corners reduce noise and vibration, enhancing the stability and reliability of the device. Therefore, the appropriate application of rounded corners in engineering design can improve device performance and quality, while reducing maintenance costs and failure rates.

[0094] See also Figure 1-3 The present invention provides a combined wave and wind power generation device, wherein the wind turbine is a horizontal-axis wind turbine. The horizontal-axis wind turbine comprises blades 1, a nacelle 2, and a tower 3. The bottom of the tower 3 is fixedly connected to the center connection of the Y-shaped base. The nacelle 2 is mounted on the top of the tower 3. The nacelle 2 houses a horizontal-axis wind turbine, whose rotor is connected to the blades 1.

[0095] It should be noted that in the present invention, the wind turbine is a horizontal-axis wind turbine. The horizontal-axis wind turbine comprises blades 1, a nacelle 2, and a tower 3. The bottom of the tower 3 is fixedly connected to the center connection of the Y-shaped base. The nacelle 2 is mounted on the top of the tower 3. The nacelle 2 houses a horizontal-axis wind turbine, whose rotor is connected to the blades 1.

[0096] It is worth mentioning that the wind turbine of the present invention can also be a vertical axis wind turbine. The vertical axis wind turbine consists of a tilted shaft, disc blades 1, an eccentric shaft mechanism, a gear transmission, and a DC / AC generator. When subjected to wind load, the vertical axis wind turbine can be automatically started. The friction of the wind flow on the surface of the wind tube and the blade 1 combination is the initial force that drives the wind turbine to rotate. When started, the surface of the blade 1 will be pushed by the wind, causing the blade 1 to rotate, thereby causing the cylinder and the eccentric shaft to rotate as well. Finally, the mechanical energy generated is converted into DC electrical energy through the gear transmission mechanism, and then output to the power grid.

[0097] See also Figure 10 , Figure 10 A flowchart of the steps of a control method applied to a wind and wave energy combined power generation device provided in an embodiment of the present invention.

[0098] The present invention provides a control method for a combined wind and wave power generation device, wherein the combined wind and wave power generation device includes a wind turbine, a semi-submersible floating platform 8, and a wave energy device. The semi-submersible floating platform 8 includes a Y-shaped base and three connecting plates 10. The method includes:

[0099] 101. Install the wind turbine at the center point of the Y-shaped base.

[0100] 102. Install the wave energy device on the connecting plate 10 through the upper hinge sleeve 4.

[0101] 103. When the wind load acts on the blades 1 in the wind turbine, it drives the horizontal axis wind turbine to rotate, converting wind energy into electrical energy.

[0102] 104. When the wave load acts on the oscillating floating plate 7 in the wave energy device, it drives the traction arm 5 to move up and down, converting the wave energy into electrical energy.

[0103] In an embodiment of the present invention, a wave energy device is installed on a connecting plate 10 through an upper hinge sleeve 4, and wave energy is converted into electrical energy through the wave energy device. The wind turbine is installed at the center point of the Y-shaped seat body, and the wind load acts on the blades 1, driving the wind turbine rotor in the nacelle 2 to rotate, so that wind energy can be converted into mechanical energy of the wind turbine rotor, wherein the rotation of the wind turbine rotor drives the generator to generate electricity and convert mechanical energy into electrical energy, thereby realizing the conversion of wind energy into mechanical energy and then generating electricity; under the action of wave load, the oscillating float 7 moves up and down with the change of wave height, and when affected by wave force, drives the traction arm 5 to move up and down through the lower hinge sleeve 6, and the traction arm 5 drives the traction arm 5 to move up and down when it moves up and down The hydraulic rod 11 works on the hydraulic cylinder, causing the hydraulic cylinder to compress the oil into the accumulator, converting the kinetic energy of the waves into pressure potential energy; when the accumulator pressure reaches the specified value, it drives the hydraulic motor to rotate, converting the pressure potential energy of the accumulator into the kinetic energy of the hydraulic motor; when the hydraulic motor is running, it drives the hydraulic generator to generate electricity through the hydraulic connecting rod, converting the kinetic energy of the hydraulic motor into electrical energy, realizing the conversion of wave energy into hydraulic energy and then generating electricity. Part of the converted electrical energy can be stored in an external energy storage device. At the same time, the converted electrical energy will provide working electricity for various electrical equipment in the wave energy-wind energy combined power generation device, and the other part will be transmitted to the power grid through the transmission system for use by land users.

[0104] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0105] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wind and wave energy combined power generation device, characterized in that: Including wind turbines, semi-submersible floating platforms and wave energy devices; The semi-submersible floating platform includes a Y-shaped base and three connecting plates; The three end points of the upper part of the Y-shaped seat are connected by three connecting plates; The wave energy device is mounted on the connecting plate via an upper hinge sleeve, and the wave energy device is used to convert wave energy into electrical energy; The wind turbine is installed at the center point of the Y-shaped base, and the wind turbine is used to convert wind energy into electrical energy; The Y-shaped seat body includes three seat body connecting blocks and three fixing blocks; The seat body connecting block is a rectangular structure with a hollow center; One ends of the three seat body connecting blocks are connected to each other, and the other ends of the three seat body connecting blocks are respectively provided with the fixing blocks; The fixed block is a semi-conical structure; The wave energy device comprises a plurality of wave energy mechanisms and an oscillating floating plate; The bottom ends of the plurality of wave energy mechanisms are connected to the oscillating floating plate, and the plurality of wave energy mechanisms are arranged in parallel; The upper hinge sleeve includes an upper hinge seat and a hinge connecting rod; The upper hinge shaft seat is provided on the connecting plate; The upper hinge shaft seat is provided with hinge shaft slots having the same number as the wave energy mechanism; A plurality of traction arms of the wave energy mechanism are installed in the hinge shaft groove through the hinge shaft connecting rod; The number of the hinge connecting rod is one, so that the plurality of traction arms can move up and down simultaneously under the action of wave loads; The oscillating floating plate includes an upper floating block and a lower floating block; The bottom of the upper floating block is fixedly connected to the upper end surface of the lower floating block; The floating block is a rounded rectangular structure with a hollowed-out middle portion, and the rounded rectangular structure adopts a rounded corner transition; The cross section of the lower floating block is an inverted triangle or an inverted isosceles trapezoid, and the inverted triangle or inverted isosceles trapezoid is a gradual structure in which the width or length of the cross section gradually decreases from top to bottom.

2. The wind and wave energy combined power generation device according to claim 1, characterized in that: The wave energy mechanism comprises a lower hinge sleeve and the traction arm; The lower hinge sleeve includes a lower hinge seat and a threaded pin; The bottom of the lower hinge seat is fixedly connected to the upper end surface of the oscillating floating plate; The bottom end of the traction arm is fixedly connected to the lower hinge shaft seat through the threaded pin; A hydraulic rod is provided at the top end of the traction arm; The hydraulic rod passes through the connecting plate and is movably connected to the hydraulic cylinder. The hydraulic rod is used to perform work on the hydraulic system.

3. The wind and wave energy combined power generation device according to claim 2, characterized in that: The fixed block is provided with the hydraulic system, which includes the hydraulic cylinder, accumulator, hydraulic motor and hydraulic generator; The hydraulic cylinder is connected to the accumulator, and the accumulator is used to receive the hydraulic oil compressed by the hydraulic cylinder and convert it into pressure potential energy; The accumulator is connected to the hydraulic motor, and the hydraulic motor is used to convert the pressure potential energy into kinetic energy; The hydraulic motor is connected to the hydraulic generator via a hydraulic connecting rod, and the hydraulic generator is used to convert the kinetic energy into electrical energy.

4. The wind and wave energy combined power generation device according to claim 1, characterized in that: The three end points of the Y-shaped seat are rounded structures.

5. The wind and wave energy combined power generation device according to claim 1, characterized in that: The wind turbine generator set is a horizontal axis wind turbine generator set.

6. The wind and wave energy combined power generation device according to claim 5, characterized in that: The horizontal axis wind turbine generator set includes blades, a nacelle and a tower; The bottom of the tower is fixedly connected to the central connection of the Y-shaped base; The nacelle is installed on the top of the tower; A horizontal axis wind turbine is arranged in the nacelle, and a rotor of the horizontal axis wind turbine is connected to the blades.

7. A control method for a combined wind and wave energy power generation device according to any one of claims 1 to 6, characterized in that: The wind and wave energy combined power generation device comprises a wind turbine, a semi-submersible floating platform and a wave energy device, wherein the semi-submersible floating platform comprises a Y-shaped base and three connecting plates, and the method comprises: Install the wind turbine generator set at the center point of the Y-shaped base; Installing the wave energy device on the connecting plate through an upper hinge sleeve; When wind load acts on the blades in the wind turbine, the horizontal axis wind turbine is driven to rotate, converting wind energy into electrical energy; When wave load acts on the oscillating floating plate in the wave energy device, it drives the traction arm to move up and down, converting the wave energy into electrical energy.

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