Wave energy generating buoy with variable length and angle damping plates and its control method

Abstract

The present invention relates to a wave energy power generation buoy with a variable length and angle damping plate and its control method, belonging to the technical field of wave energy power generation buoys. It includes a main floating body, an air turbine and a damping plate. The main floating body is a hollow rear-bent pipe structure. The air turbine is installed at the air outlet at the top of the rear end of the main floating body. The damping plate is installed at the rear end of the main floating body. The damping plate includes an L-shaped fixed plate, a horizontal telescopic plate, a vertical telescopic plate and an inclined movable plate. The L-shaped fixed plate is fixedly connected to the main floating body. The horizontal telescopic plate is horizontally slidably connected to the horizontal side plate of the L-shaped fixed plate. The vertical telescopic plate is vertically slidably connected to the vertical side plate of the L-shaped fixed plate. The upper and lower ends of the inclined movable plate are respectively movably connected to the vertical telescopic plate and the horizontal telescopic plate. The L-shaped fixed plate is provided with a first telescopic driving mechanism for driving the horizontal telescopic plate to move back and forth and a second telescopic driving mechanism for driving the vertical telescopic plate to move up and down. The present invention can improve the wave energy conversion efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of wave energy power generation buoys, and particularly relates to a wave energy power generation buoy with variable-length and angle damping plates and a control method thereof. Background Technique

[0002] Ocean energy is a natural resource that depends on the movement of seawater and has the characteristic of being renewable. Ocean energy mainly includes various forms such as wave energy, tidal current energy, and tidal energy, and is an inexhaustible and renewable energy source. Among them, wave energy, as a common form of ocean energy, has the characteristics of large stockpiles and less pollution in the absorption and utilization process. Developing and utilizing wave energy is of great significance for alleviating the energy crisis and reducing environmental pollution.

[0003] A damping plate is a metal plate-like structure with a certain length and thickness. In marine equipment, the damping plate is an important component, mainly used to slow down and control the influence of waves and vibrations on the equipment in the marine environment. In a marine energy power generation device, the damping plate helps to improve the stability and efficiency of the equipment. The shape and size design of the damping plate usually undergo optimization to maximize its energy absorption efficiency. The capture characteristics of the device can change the additional damping and added mass through the structure of the damping plate, thereby changing the natural heaving frequency of the device and enhancing the heaving response in the non-resonant region of the device, so as to expand the capture width ratio. For example, the Chinese invention patent application with the publication number CN111874159A proposes a wave energy power generation buoy; the Chinese invention patent application with the publication number CN116080825A discloses a wave energy power generation buoy and its working method.

[0004] According to the latest international classification method, wave energy technologies are divided into three types: oscillating water column technology, oscillating float technology, and overtopping technology. Among them, the oscillating water column type wave energy power generation device has received extensive attention at home and abroad. The oscillating water column type wave energy power generation device uses the rise and fall of waves to change the height of the water column in the device. There is an air chamber in the device for storing and transmitting air. The change in the height of the water column causes a change in the pressure in the air chamber, thereby driving the air to rotate through the turbine. The air flows bidirectionally, with air as the medium for energy conversion, thereby driving the air turbine to rotate. Finally, the motor converts mechanical energy into electrical energy.

[0005] Most of the existing wave energy capture devices can only perform well in specific sea conditions, and cannot adjust their natural heaving frequency in a timely manner according to the existing sea conditions. They can only obtain energy within a small range around a wave, resulting in relatively low efficiency. However, in actual sea conditions, the situation of the ocean is constantly changing. Therefore, it is necessary to design a damping plate with variable length and angle for a wave energy power generation buoy, which can adjust the length and angle of the damping plate in a timely manner according to the actual wave conditions during the process of absorbing wave energy, so as to improve the conversion efficiency of wave energy. Summary of the Invention

[0006] In view of the deficiencies of the prior art, the purpose of the present invention is to provide a wave energy generating buoy with variable length and angle damping plates and its control method to solve or improve the defects existing in the prior art.

[0007] To achieve the above purpose, the present invention adopts the following technical solutions: A wave energy generating buoy with variable length and angle damping plates, including a main floating body, an air turbine, and a damping plate. The main floating body is a hollow rear-bent pipe structure. The air turbine is installed at the air outlet at the top of the rear end of the main floating body. The damping plate is installed at the rear end of the main floating body. The damping plate includes an L-shaped fixing plate, a horizontal telescopic plate, a vertical telescopic plate, and an inclined movable plate. The L-shaped fixing plate is fixedly connected to the main floating body. The vertical telescopic plate is vertically slidably connected to the vertical side plate of the L-shaped fixing plate. The horizontal telescopic plate is horizontally slidably connected to the horizontal side plate of the L-shaped fixing plate. The upper and lower ends of the inclined movable plate are respectively movably connected to the vertical telescopic plate and the horizontal telescopic plate. The L-shaped fixing plate is provided with a first telescopic driving mechanism for driving the horizontal telescopic plate to move back and forth and a second telescopic driving mechanism for driving the vertical telescopic plate to move up and down.

[0008] Preferably, the upper end of the inclined movable plate is hinged to the upper end of the vertical telescopic plate, and the lower end of the inclined movable plate is hinged to the rear end of the horizontal telescopic plate.

[0009] Preferably, the inclined movable plate includes an upper telescopic outer plate, a lower telescopic outer plate, and an intermediate telescopic inner plate. The upper telescopic outer plate is hinged to the vertical telescopic plate, the lower telescopic outer plate is hinged to the horizontal telescopic plate, and the upper and lower ends of the intermediate telescopic inner plate are respectively slidably connected to the upper telescopic outer plate and the lower telescopic outer plate.

[0010] Preferably, the vertical side plate of the L-shaped fixing plate is provided with a vertical sliding groove, and the vertical telescopic plate is slidably installed in the vertical sliding groove. The horizontal side plate of the L-shaped fixing plate is provided with a horizontal sliding groove, and the horizontal telescopic plate is slidably installed in the horizontal sliding groove.

[0011] Preferably, a first fixed seat is provided on the vertical side plate of the L-shaped fixing plate. The fixing member of the first telescopic driving mechanism is linked to the first fixed seat. A second fixed seat is provided on the vertical telescopic plate. The movable member of the first telescopic driving mechanism is linked to the second fixed seat.

[0012] Preferably, a third fixed seat is provided on the horizontal side plate of the L-shaped fixing plate. The fixing member of the second telescopic driving mechanism is linked to the third fixed seat. A fourth fixed seat is provided on the horizontal telescopic plate. The movable member of the second telescopic driving mechanism is linked to the fourth fixed seat.

[0013] Preferably, the first telescopic driving mechanism is an electric push rod, a hydraulic cylinder or a pneumatic cylinder.

[0014] Preferably, the second telescopic driving mechanism is an electric push rod, a hydraulic cylinder or a pneumatic cylinder.

[0015] The present invention also provides a control method for a wave energy power generation buoy with a damping plate with variable length and angle, comprising the following steps:

[0016] S1, set the time interval T for the sensor to detect the wave angular frequency;

[0017] S2, setting the upper limit ω1 and lower limit ω2 of the active wave angular frequency when the buoy is working normally;

[0018] S3, detect the current wave angular frequency ω through the sensor i ;

[0019] S4. Determine the current wave angular frequency ω i Is it within the active wave angular frequency range? If not, the buoy stops running; if so, calculate the current heave natural frequency ω of the buoy n ;

[0020] S5. Determine the current heave natural frequency ω of the buoy n Is it equal to the current wave angular frequency ω i If yes, execute step S6; if no, adjust the extension length of the horizontal telescopic plate by the first telescopic drive mechanism, and adjust the extension length of the vertical telescopic plate by the second telescopic drive mechanism, so as to change the heave natural frequency ω of the buoy n , so that the heave natural frequency of the buoy ω n and the current wave angular frequency ω i equal;

[0021] S6. Repeat steps S3 to S5 at a time interval T.

[0022] Preferably, in step S3, the specific method of adjusting the extension length of the horizontal telescopic plate by the first telescopic driving mechanism and adjusting the extension length of the vertical telescopic plate by the second telescopic driving mechanism is:

[0023] According to the heave natural frequency ω of the buoy n and the current wave angular frequency ω i The difference between the heave natural frequency ω and the n The required additional mass; based on the required additional mass, the required vertical projection area of the damping plate is calculated; based on the required vertical projection area of the damping plate, the extension length of the horizontal telescopic plate is adjusted by the first telescopic drive mechanism, and the extension length of the vertical telescopic plate is adjusted by the second telescopic drive mechanism.

[0024] Compared with the prior art, the present invention has the following beneficial effects: The present invention can adjust the telescopic length of the horizontal telescopic plate through the first telescopic driving mechanism, and can adjust the telescopic length of the vertical telescopic plate through the second telescopic driving mechanism, so that at different wave angular frequencies, the length and angle of the damping plate can be changed according to the actual situation, thereby obtaining the optimal wave energy conversion efficiency and expanding the capture width ratio of the buoy, solving the problem that the heaving natural frequency of the existing rear-bent pipe wave energy power generation device cannot be changed, resulting in a low conversion efficiency of absorbing wave energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description can also be obtained by those of ordinary skill in the art without creative efforts based on these drawings.

[0026] Figure 1 It is a schematic diagram of the overall structure of a wave energy power generation buoy with a damping plate of variable length and angle according to an embodiment of the present invention.

[0027] Figure 2 It is a schematic diagram of the structure of the damping plate in an embodiment of the present invention.

[0028] Figure 3 It is an assembly schematic diagram of the upper telescopic outer plate, the middle telescopic inner plate and the lower telescopic outer plate in an embodiment of the present invention.

[0029] Figure 4 It is an assembly schematic diagram of the vertical telescopic plate and the vertical side plate in an embodiment of the present invention.

[0030] Figure 5 It is a schematic flow chart of a control method for a wave energy power generation buoy with a damping plate of variable length and angle according to an embodiment of the present invention.

[0031] Markings in the figure: 1, main buoy; 2, air turbine; 3, damping plate; 31, L-shaped fixing plate; 311, horizontal side plate; 312, vertical side plate; 313, vertical sliding groove; 32, horizontal telescopic plate; 33, vertical telescopic plate; 34, inclined movable plate; 341, upper telescopic outer plate; 342, lower telescopic outer plate; 343, middle telescopic inner plate; 344, upper inclined sliding groove; 345, lower inclined sliding groove; 41, first telescopic driving mechanism; 42, second telescopic driving mechanism. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. To make the above features and advantages of the present invention more obvious and understandable, specific embodiments are hereby given and detailed descriptions are made in conjunction with the accompanying drawings as follows.

[0033] As Figures 1 to 4 shown, an embodiment of the present invention provides a wave energy generating buoy with variable length and angle damping plates, which includes a main floating body 1, an air turbine 2, and a damping plate 3. The main floating body 1 is a hollow rear-bent pipe structure. The front end of the main floating body 1 is provided with a liquid inlet, and the top of the rear end of the main floating body 1 is provided with an air outlet. The air turbine 2 is installed at the air outlet, and the damping plate 3 is installed at the rear end of the main floating body 1. The damping plate 3 includes an L-shaped fixing plate 31, a horizontal telescopic plate 32, a vertical telescopic plate 33, and an inclined movable plate 34. The L-shaped fixing plate 31 is fixedly connected to the main floating body 1. The vertical telescopic plate 33 is vertically slidably connected to the vertical side plate 312 of the L-shaped fixing plate 31. The horizontal telescopic plate 32 is horizontally slidably connected to the horizontal side plate 311 of the L-shaped fixing plate. The upper and lower ends of the inclined movable plate 34 are respectively movably connected to the vertical telescopic plate 33 and the horizontal telescopic plate 32. The L-shaped fixing plate is provided with a first telescopic driving mechanism 41 for driving the horizontal telescopic plate 32 to move back and forth and a second telescopic driving mechanism 42 for driving the vertical telescopic plate 33 to move up and down.

[0034] In this embodiment, the upper end of the inclined movable plate 34 is hinged to the upper end of the vertical telescopic plate 33, and the lower end of the inclined movable plate 34 is hinged to the rear end of the horizontal telescopic plate 32. Through the hinge structure, both ends of the inclined movable plate 34 can rotate around its hinge axis.

[0035] In this embodiment, the inclined movable plate 34 may include an upper telescopic outer plate 341, a lower telescopic outer plate 342, and an intermediate telescopic inner plate 343. The upper telescopic outer plate 341 is hinged to the vertical telescopic plate 33. The lower telescopic outer plate 342 is movably connected and hinged to the horizontal telescopic plate 32. The upper and lower ends of the intermediate telescopic inner plate 343 are respectively slidably connected to the upper telescopic outer plate 341 and the lower telescopic outer plate 342.

[0036] In this embodiment, an upper inclined sliding groove 344 may be provided in the upper telescopic outer plate 341. The upper end portion of the intermediate telescopic inner plate 343 is slidably installed in the upper inclined sliding groove 344, and the upper end portion of the intermediate telescopic inner plate 343 can slide freely in the upper inclined sliding groove 344. A lower inclined sliding groove 345 is provided in the lower telescopic outer plate 342. The lower end portion of the intermediate telescopic inner plate 343 is slidably installed in the lower inclined sliding groove 345, and the lower end portion of the intermediate telescopic inner plate 343 can slide freely in the lower inclined sliding groove 345.

[0037] In this embodiment, a vertical sliding groove 313 may be provided on the vertical side plate 312 of the L-shaped fixing plate 31. The vertical telescopic plate 33 is slidably installed in the vertical sliding groove 313, and the vertical telescopic plate 33 can slide freely relative to the vertical side plate 312 of the L-shaped fixing plate 31 through the vertical sliding groove 313. A horizontal sliding groove may be provided on the horizontal side plate 311 of the L-shaped fixing plate 31. The horizontal telescopic plate 32 is slidably installed in the horizontal sliding groove, and the horizontal telescopic plate 32 can slide freely relative to the horizontal side plate 311 of the L-shaped fixing plate 31 through the horizontal sliding groove.

[0038] In this embodiment, a first fixing seat (omitted in the figure) is provided on the vertical side plate 312 of the L-shaped fixing plate 31. The fixing member of the first telescopic driving mechanism 41 is linked to the first fixing seat. A second fixing seat (omitted in the figure) is provided on the vertical telescopic plate 33. The movable member of the first telescopic driving mechanism 41 is linked to the second fixing seat. A third fixing seat (omitted in the figure) is provided on the horizontal side plate 311 of the L-shaped fixing plate 31. The fixing member of the second telescopic driving mechanism 42 is linked to the third fixing seat. A fourth fixing seat (omitted in the figure) is provided on the horizontal telescopic plate 32. The movable member of the second telescopic driving mechanism 42 is linked to the fourth fixing seat.

[0039] In this embodiment, the first telescopic driving mechanism 41 is preferably but not limited to an electric push rod. Of course, a hydraulic cylinder or a pneumatic cylinder can also be selected. The second telescopic driving mechanism 42 is preferably but not limited to an electric push rod. Of course, a hydraulic cylinder or a pneumatic cylinder can also be selected.

[0040] The working principle of this embodiment is as follows: The movement of the waves causes the water level in the main floating body 1 to change, resulting in an air pressure difference between the air chamber in the main floating body 1 and the outside world, forming a rapidly flowing air current. The air flows bidirectionally through the air turbine 2, driving the air turbine 2 to rotate. Mechanical energy is converted into electrical energy, and finally the generator is driven to generate electricity.

[0041] The added mass of the buoy is related to the vertical projection area of the damping plate 3. By changing the vertical projection area of the damping plate 3, the added mass of the buoy in the heaving direction can be changed, and finally the natural heaving frequency of the buoy can be changed. The greater the change in the vertical projection area of the damping plate 3, the greater the added mass changed by the damping plate 3. Under the same wave period, the larger the area of the damping plate 3, the greater the added mass of the buoy, and the smaller the natural heaving frequency. The smaller the area of the damping plate 3, the smaller the added mass of the buoy, and the greater the natural heaving frequency. In the ever-changing sea conditions, timely adjusting the natural heaving frequency can effectively improve the energy conversion efficiency of the buoy.

[0042] As Figures 1 to 5 shown, this embodiment also provides a control method for a wave energy generating buoy with a variable length and angle damping plate, including the following steps:

[0043] S1. Set the time interval T for the sensor to detect the wave angular frequency;

[0044] S2. Set the upper limit ω1 and the lower limit ω2 of the active wave angular frequency when the buoy is working normally;

[0045] S3. Detect the current wave angular frequency ω through the sensor i ;

[0046] S4. Determine whether the current wave angular frequency ω i is within the range of the active wave angular frequency. If not, the buoy stops running; if so, calculate the current natural heaving frequency ω of the buoy n ;

[0047] S5. Determine whether the current natural heaving frequency ω of the buoy n is equal to the current wave angular frequency ω i . If so, execute step S6; if not, adjust the extended length of the horizontal telescopic plate 32 through the first telescopic driving mechanism 41, and adjust the extended length of the vertical telescopic plate 33 through the second telescopic driving mechanism 42, thereby changing the natural heaving frequency ω of the buoy n , so that the natural heaving frequency ω of the buoy n is equal to the current wave angular frequency ω i ;

[0048] S6. Repeat steps S3 to S5 with the time interval T as the period.

[0049] In this embodiment, in step S3, the specific method for adjusting the extended length of the horizontal telescopic plate 32 through the first telescopic driving mechanism 41 and adjusting the extended length of the vertical telescopic plate 33 through the second telescopic driving mechanism 42 is:

[0050] According to the natural heaving frequency ω of the buoyn and the current wave angular frequency ω i to calculate the additional mass required to change the heaving natural frequency ω n ; according to the required additional mass, calculate the vertical projected area of the required damping plate 3; according to the vertical projected area of the required damping plate 3, adjust the extended length of the horizontal telescopic plate 32 through the first telescopic driving mechanism 41, and adjust the extended length of the vertical telescopic plate 33 through the second telescopic driving mechanism 42.

[0051] wherein, the heaving natural frequency ω of the wave energy generating buoy n The calculation formula is as follows:

[0052] ;

[0053] In the formula, m is the mass of the wave energy generating buoy, A 33 is the additional mass of the wave energy generating buoy, and c is the restoring force coefficient. When the additional mass A of the wave energy generating buoy 33 is larger, the heaving natural frequency ω of the wave energy generating buoy n is smaller; on the contrary, it is the opposite.

[0054] wherein, the additional mass A of the wave energy generating buoy 33 The calculation formula is as follows:

[0055] ;

[0056] In the formula, ρ is the density of seawater, S is the vertical projected area of the damping plate, H0 is the depth of seawater, and h is the depth of the damping plate below the seawater surface. When the extended length of the horizontal telescopic plate 32 is longer, the vertical projected area S of the damping plate 3 is larger, and thus the additional mass A of the wave energy generating buoy 33 is larger; on the contrary, it is the opposite. At the same time, adjusting the extended length of the vertical telescopic plate 33 can change the center of gravity height of the wave energy generating buoy, and lowering the center of gravity of the wave energy generating buoy can improve the stability of the buoy.

[0057] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0058] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0059] In the present invention, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] Contents not detailed in the present invention all belong to the prior art and will not be elaborated herein.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. However, such modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wave energy generating buoy with a variable length and angle damping plate, characterized in that, It includes a main floating body, an air turbine and a damping plate. The main floating body is a hollow rear-bent pipe structure. The air turbine is installed at the air outlet at the top of the rear end of the main floating body. The damping plate is installed at the rear end of the main floating body. The damping plate includes an L-shaped fixing plate, a horizontal telescopic plate, a vertical telescopic plate and an inclined movable plate. The L-shaped fixing plate is fixedly connected with the main floating body. The horizontal telescopic plate is horizontally slidably connected with the horizontal side plate of the L-shaped fixing plate. The vertical telescopic plate is vertically slidably connected with the vertical side plate of the L-shaped fixing plate. The upper and lower ends of the inclined movable plate are respectively movably connected with the vertical telescopic plate and the horizontal telescopic plate. A first telescopic driving mechanism for driving the horizontal telescopic plate to move back and forth and a second telescopic driving mechanism for driving the vertical telescopic plate to move up and down are arranged on the L-shaped fixing plate; The upper end of the inclined movable plate is hinged to the upper end of the vertical telescopic plate, and the lower end of the inclined movable plate is hinged to the rear end of the horizontal telescopic plate; The inclined movable plate includes an upper telescopic outer plate, a lower telescopic outer plate and an intermediate telescopic inner plate. The upper telescopic outer plate is hinged to the vertical telescopic plate, the lower telescopic outer plate is hinged to the horizontal telescopic plate, and the upper and lower ends of the intermediate telescopic inner plate are respectively slidably connected with the upper telescopic outer plate and the lower telescopic outer plate; A vertical sliding groove is arranged on the vertical side plate of the L-shaped fixing plate, and the vertical telescopic plate is slidably installed in the vertical sliding groove. A horizontal sliding groove is arranged on the horizontal side plate of the L-shaped fixing plate, and the horizontal telescopic plate is slidably installed in the horizontal sliding groove.

2. The wave energy generating buoy with a variable length and angle damping plate according to claim 1, characterized in that, A first fixing seat is arranged on the vertical side plate of the L-shaped fixing plate. The fixing part of the first telescopic driving mechanism is linked with the first fixing seat. A second fixing seat is arranged on the vertical telescopic plate. The movable part of the first telescopic driving mechanism is linked with the second fixing seat.

3. The wave energy generating buoy with a variable length and angle damping plate according to claim 1, characterized in that A third fixing seat is arranged on the horizontal side plate of the L-shaped fixing plate. The fixing part of the second telescopic driving mechanism is linked with the third fixing seat. A fourth fixing seat is arranged on the horizontal telescopic plate. The movable part of the second telescopic driving mechanism is linked with the fourth fixing seat.

4. The wave energy generating buoy with a variable length and angle damping plate according to claim 1, characterized in that The first telescopic driving mechanism is an electric push rod, a hydraulic cylinder or a cylinder.

5. The wave energy generating buoy with a variable length and angle damping plate according to claim 1, characterized in that, The second telescopic driving mechanism is an electric push rod, a hydraulic cylinder or a cylinder.

6. A control method for a wave energy generating buoy with a variable length and angle damping plate, which is used to control the wave energy generating buoy with a variable length and angle damping plate as described in claim 1, characterized in that, It includes the following steps: S1. Set the time interval T for the sensor to detect the wave angular frequency; S2. Set the upper limit ω1 and the lower limit ω2 of the active wave angular frequency when the buoy works normally; S3. Detect the current wave angular frequency ω through a sensor i ; S4. Determine whether the current wave angular frequency ω i is within the active wave angular frequency range. If not, the buoy stops operating; if so, calculate the current heaving natural frequency ω n ; S5. Determine the current heaving natural frequency ω of the buoy n Is it equal to the current wave angular frequency ω i , if so, execute step S6; if not, adjust the extension length of the horizontal telescopic plate through the first telescopic driving mechanism, and adjust the extension length of the vertical telescopic plate through the second telescopic driving mechanism, thereby changing the heaving natural frequency ω of the buoy n , so that the heaving natural frequency ω of the buoy n and the current wave angular frequency ω i are equal; S6. Repeat steps S3 to S5 with the time interval T as the period.

7. The control method of the wave energy generating buoy with a variable length and angle damping plate according to claim 6, characterized in that, In step S3, the specific method of adjusting the extension length of the horizontal telescopic plate through the first telescopic driving mechanism and adjusting the extension length of the vertical telescopic plate through the second telescopic driving mechanism is: According to the difference between the heaving natural frequency ω of the buoy n and the current wave angular frequency ω i , calculate the additional mass required to change the heaving natural frequency ω n ; according to the required additional mass, calculate the vertical projected area of the required damping plate; according to the vertical projected area of the required damping plate, adjust the extension length of the horizontal telescopic plate through the first telescopic driving mechanism, and adjust the extension length of the vertical telescopic plate through the second telescopic driving mechanism.

Images