Vortex-induced vibration suppression device and wind turbine generator set

Abstract

This invention provides a vortex-induced vibration suppression device and a wind turbine generator set, belonging to the field of wind power generation technology. The vortex-induced vibration suppression device is installed on a wind turbine blade to suppress vortex-induced vibration of the blade. The wind turbine blade includes a root cylindrical section, a section from the root cylindrical end to the maximum chord length, and a section from the maximum chord length to the blade tip. The device includes: a first suppression structure installed at the root cylindrical section of the wind turbine blade, used to switch from a wound state to an unfolded state when vortex-induced vibration is determined to occur in the wind turbine generator set, thereby disrupting vortices around the blade; and to switch from an unfolded state to a wound state when vortex-induced vibration is determined not to occur in the wind turbine generator set; and multiple second suppression structures are spaced apart on the surface of the section from the root cylindrical end to the maximum chord length of the wind turbine blade, used to disrupt wind flow around the blade. This invention has the advantages of simple structure, low operating cost, and can effectively reduce vortex-induced vibration of wind turbine blades, thereby increasing power generation.

Description

Technical Field

[0001] This invention relates to the field of wind power generation technology, specifically to a vortex-induced vibration suppression device and a wind turbine generator set. Background Technology

[0002] With the rapid development of wind power technology, wind turbines are becoming increasingly larger, featuring larger rotors and taller towers. When a wind turbine is running or shut down, wind passing over the tower and blades creates vortices behind them, potentially leading to vortex-induced vibration (VEV). VEV is a vibration phenomenon that occurs in low-speed fluids. From a fluid dynamics perspective, any non-streamlined object, under a constant flow velocity, will generate vortices that detach from the structure's surface on both sides. When the vortex detachment frequency on the blades approaches the tower's natural frequency, the blades are prone to resonance. Severe oscillation can cause damage, significantly impacting structural safety and posing a substantial safety hazard. Summary of the Invention

[0003] The purpose of this invention is to provide a vortex-induced vibration suppression device, which solves the problem that when the vortex shedding frequency on the blade is close to the natural frequency of the tower, the blade is prone to resonance, and when the oscillation is severe, it will cause damage, which will have a significant impact on its structural safety and pose a significant safety hazard.

[0004] To achieve the above objectives, embodiments of the present invention provide a vortex-induced vibration suppression device, which is installed on a wind turbine blade to suppress vortex-induced vibration of the wind turbine blade. The wind turbine blade includes a root cylindrical section, a section from the root cylindrical end to the maximum chord length, and a section from the maximum chord length to the blade tip. The device includes:

[0005] The first suppression structure is set at the cylindrical section at the root of the wind turbine blade. It is used to switch from a wound state to an unfolded state when it is determined that the wind turbine is generating vortex-induced vibration, so as to destroy the vortices around the blade, and to switch from an unfolded state to a wound state when it is determined that the wind turbine is not generating vortex-induced vibration.

[0006] Multiple secondary suppression structures are spaced apart on the surface of the wind turbine blade from the root cylindrical end to the maximum chord length section, to disrupt the airflow around the blade.

[0007] Optionally, the device further includes:

[0008] An anemometer is installed on the top of the wind turbine casing to obtain wind speed data;

[0009] Multiple acceleration sensors are installed on each wind turbine blade to acquire blade acceleration data;

[0010] The presence of vortex-induced vibration in the wind turbine was confirmed, including:

[0011] If the wind speed is greater than the wind speed threshold and / or the blade acceleration is greater than the acceleration threshold, then the wind turbine is determined to have vortex-induced vibration.

[0012] Optionally, the first suppression structure includes:

[0013] A turbulence-dissipating net is fitted onto the cylindrical section at the root of the wind turbine blades;

[0014] A winding mechanism is located at the end of the cylindrical section at the root of the wind turbine blades and is connected to the turbulence net to realize the winding and unwinding of the turbulence net.

[0015] Optionally, the turbulence mesh is made of nylon or fabric.

[0016] Optionally, the turbulence-disrupting network includes at least two independently configured turbulence-disrupting sub-networks;

[0017] The winding mechanism includes:

[0018] Multiple motors are arranged opposite each other at the cylindrical end of the root of the wind turbine blades. The shafts of two opposite motors are respectively connected to the two ends of a winding roller through a coupling. Each winding roller is connected to the winding end of the corresponding turbulence subnet. The winding of the turbulence subnet is achieved by rotating the motor shaft.

[0019] Multiple fixed wheels and multiple pull wires are arranged opposite each other at the cylindrical end of the root of the wind turbine blade. Each pull wire passes through the corresponding fixed wheel and is connected at both ends to the same end of the corresponding take-up roller. Each pull wire is also connected to the side of the corresponding turbulence subnet. The turbulence subnet is wound up by rotating the take-up roller to release and retract the pull wires.

[0020] Optionally, the device further includes:

[0021] An annular baffle, the cross-section of which is L-shaped, is fitted onto the end of the cylindrical root section of the fan blade, forming a receiving cavity with the fan blade, and multiple motors are located inside the receiving cavity.

[0022] Optionally, the second suppression structure includes:

[0023] The mounting bracket has at least two deflector bars that are positioned opposite each other and at an angle.

[0024] Optionally, the deflector bar is made of glass fiber and has an anti-corrosion coating on its surface.

[0025] Optionally, the device further includes:

[0026] The third suppression structure, located from the maximum chord length to the tip of the wind turbine blade, is used to disrupt the vortex flow behind the blade. The third suppression structure includes:

[0027] A connecting rope, on which turbulence blocks are spaced apart, is wound around the maximum chord length of the wind turbine blades to the blade tip.

[0028] On the other hand, the present invention also provides a wind turbine generator set, including the above-mentioned vortex-induced vibration suppression device.

[0029] This technical solution involves strategically placing a first suppression structure and a second suppression structure at different locations on the wind turbine blades to achieve combined vortex-induced vibration suppression. The first and second suppression structures are simple in structure and have low operating costs. By using the first and second suppression structures in combination, the vortex-induced vibration of the wind turbine blades can be effectively reduced, thereby increasing power generation.

[0030] Other features and advantages of the embodiments of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0031] The accompanying drawings are provided to further illustrate embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. In the drawings:

[0032] Figure 1 This is a schematic diagram of the structure of the first vortex-induced vibration suppression device provided by the present invention;

[0033] Figure 2 This is a schematic diagram of the first suppression structure provided by the present invention;

[0034] Figure 3 This is a schematic diagram of the second suppression structure provided by the present invention;

[0035] Figure 4 This is a schematic diagram of the structure of the annular baffle provided by the present invention;

[0036] Figure 5 This is a schematic diagram of the connection structure between the annular baffle and the fan blades provided by the present invention;

[0037] Figure 6 This is a schematic diagram of the structure of the second type of vortex-induced vibration suppression device provided by the present invention.

[0038] Explanation of reference numerals in the attached figures

[0039] 1-Wind turbine blade; 2-First suppression structure;

[0040] 3-Second suppression structure; 4-Annular baffle;

[0041] 5-Third inhibitory structure; 11-Root cylindrical segment;

[0042] 12-From the cylindrical end of the root to the maximum chord length; 13-From the maximum chord length to the leaf tip;

[0043] 14 - Second fuse; 21 - Baffle mesh;

[0044] 22-Rewinding mechanism; 31-Mounting bracket;

[0045] 32 - Spoiler bar; 51 - Connecting rope;

[0046] 52 - Baffle block; 221 - Motor;

[0047] 222-Take-up roller; 223-Fixed roller;

[0048] 224 - Pull wire; 401 - Receiving cavity. Detailed Implementation

[0049] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.

[0050] In the embodiments of the present invention, unless otherwise stated, directional terms such as "up," "down," "left," and "right" generally refer to the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use.

[0051] The terms “first,” “second,” “third,” etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0052] The terms "parallel" and "perpendicular" do not mean that the components must be absolutely parallel or perpendicular, but rather that they can be slightly tilted. For example, "parallel" simply means that its direction is more parallel than "perpendicular," not that the structure must be completely parallel, but that it can be slightly tilted.

[0053] The terms "horizontal," "vertical," and "sag" do not imply that a component must be absolutely horizontal, vertical, or sagging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but can be slightly tilted.

[0054] Furthermore, terms like "roughly" and "basically" are used to indicate that the content does not require absolute precision, but rather allows for a certain degree of deviation. For example, "roughly equal" does not simply mean absolute equality; in actual production and operation, achieving absolute "equality" is difficult, and a certain degree of deviation is generally present. Therefore, besides absolute equality, "roughly equal to" also includes the aforementioned situation where a certain degree of deviation exists. Using this as an example, in other cases, unless otherwise specified, terms like "roughly" and "basically" have similar meanings.

[0055] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0056] Figure 1 This is a schematic diagram of the structure of the first vortex-induced vibration suppression device provided by the present invention; Figure 2 This is a schematic diagram of the first suppression structure provided by the present invention; Figure 3 This is a schematic diagram of the second suppression structure provided by the present invention; Figure 4 This is a schematic diagram of the structure of the annular baffle provided by the present invention; Figure 5 This is a schematic diagram of the connection structure between the annular baffle and the fan blades provided by the present invention; Figure 6 This is a schematic diagram of the structure of the second type of vortex-induced vibration suppression device provided by the present invention.

[0057] like Figure 1 As shown, this embodiment provides a vortex-induced vibration suppression device, which is installed on a wind turbine blade 1 to suppress vortex-induced vibration of the wind turbine blade 1. The wind turbine blade 1 includes a root cylindrical section 11, a section from the root cylindrical end to the maximum chord length 12, and a section from the maximum chord length to the blade tip 13, as shown. Figure 1 As shown, the device includes:

[0058] The first suppression structure 2 is provided at the root cylindrical section 11 of the wind turbine blade 1. It is used to switch from the coiled state to the unfolded state when it is determined that the wind turbine unit generates vortex-induced vibration, so as to destroy the vortex around the blade, and to switch from the unfolded state to the coiled state when it is determined that the wind turbine unit does not generate vortex-induced vibration.

[0059] Multiple second suppression structures 3 are spaced apart on the surface of the root cylindrical end to the maximum chord length section 12 of the wind turbine blade 1 to disrupt the airflow around the blade.

[0060] Specifically, based on the blade's shape characteristics and thickness-to-chord ratio distribution, the blade's installation layout is divided into three parts: the root cylindrical section 11, the section from the root cylindrical end to the maximum chord length 12, and the section from the maximum chord length to the blade tip 13. Based on the back chord ratio and the impact of vortex-induced vibration, the root cylindrical end and the section from the root cylindrical end to the maximum chord length are equipped with long-term vortex-induced vibration suppression devices, namely the first suppression structure 2 and the second suppression structure 3, to achieve combined vortex-induced vibration suppression. The first and second suppression structures are simple in structure and have low operating costs. The combined use of the first and second suppression structures can effectively reduce the vortex-induced vibration of the wind turbine blades and increase power generation.

[0061] Furthermore, the device also includes:

[0062] An anemometer is installed on the top of the wind turbine casing to obtain wind speed data;

[0063] Multiple acceleration sensors are installed on each wind turbine blade to acquire blade acceleration data;

[0064] The presence of vortex-induced vibration in the wind turbine was confirmed, including:

[0065] If the wind speed is greater than the wind speed threshold and / or the blade acceleration is greater than the acceleration threshold, then the wind turbine is determined to have vortex-induced vibration.

[0066] Specifically, each blade is equipped with an anemometer and an acceleration sensor. The data obtained by the anemometer and acceleration sensor is transmitted to the wind turbine's control system. Based on the obtained wind speed data and blade acceleration data, the control system determines whether the wind turbine has vortex-induced vibration. If it determines which of the three blades has vortex-induced vibration, it controls the first suppression structure 2 on that blade to switch from a coiled state to an unfolded state to destroy the vortices around the blade. When there is no vortex-induced vibration on that blade, the first suppression structure 2 is controlled to switch from an unfolded state to a coiled state.

[0067] Furthermore, such as Figure 2 As shown, the first suppression structure 2 includes:

[0068] A turbulence-disrupting net 21 is fitted onto the cylindrical section 11 at the root of the fan blade 1;

[0069] The winding mechanism 22 is located at the end of the cylindrical section 11 at the root of the fan blade 1 and is connected to the turbulence net 21 to realize the winding and unwinding of the turbulence net 21.

[0070] Specifically, in this embodiment, the vortex around the blade is disrupted by the vortex net 21, and the vortex net 21 is wound up and down by the set winding mechanism 22, which can reduce the space occupied, further reduce the windward area, ensure the normal operation of the wind turbine, and suppress the deployment of the vortex net 21 in time when vortex-induced vibration occurs.

[0071] Furthermore, the turbulence mesh 21 is made of nylon or fabric.

[0072] Specifically, the deflector net 21 can be made of long-life nylon or fabric to increase service life and reduce maintenance costs. The mesh of the deflector net 21 can be square, polygonal, triangular, or other structural forms.

[0073] Furthermore, such as Figure 1-2 As shown, the turbulence-disrupting network 21 includes at least two independently configured turbulence-disrupting sub-networks;

[0074] The winding mechanism 22 includes:

[0075] Multiple motors 221 are arranged opposite to each other at the end of the cylindrical section 11 at the root of the fan blade 1. The shafts of two oppositely arranged motors 221 are respectively connected to the two ends of a winding roller 222 through a coupling. Each winding roller 222 is connected to the winding end of the corresponding turbulence subnet. The winding of the turbulence subnet is achieved by rotating the shaft of the motor 221.

[0076] Multiple fixed wheels 223 and multiple pull wires 224 are arranged opposite each other at the end of the cylindrical section 11 at the root of the wind turbine blade 1. Each pull wire 224 passes through the corresponding fixed wheel 223 and is connected at both ends to the same end of the corresponding take-up roller 222. Each pull wire 224 is also connected to the side of the corresponding turbulence subnet. The turbulence subnet is wound up by rotating the pull wires 224.

[0077] Specifically, in this embodiment, the turbulence subnet, the take-up roller 222 and the draw wire 224 are relatively soft and can produce a certain degree of deformation. The take-up roller 222 is arc-shaped and matches the shape of the fan blade 1.

[0078] In one embodiment, two turbulence-inducing subnets, four single-axis motors 221, and two take-up rollers 222 are provided. The motors are arranged in pairs facing each other, and the shafts of the opposing motors are connected to the two ends of the same take-up roller 222 via couplings or universal joints. This ensures that when the two opposing motors 221 rotate synchronously in the forward direction, the take-up roller 222 will rotate in the forward direction. Therefore, one end of a turbulence-inducing subnet is fixed to the take-up roller 222. When the take-up roller 222 rotates in the forward direction, the turbulence-inducing subnet will be wound onto the take-up roller 222, thus satisfying the requirement of winding the turbulence-inducing subnet. However, in order to achieve the unfolding of the turbulence-inducing subnet, the winding roller 222 is used to further enhance the winding effect. A fixed wheel 223 is provided at the corresponding position of the fan blade at the end of the winding roller 222. The rolling direction of the fixed wheel 223 is the same as the rolling direction of the take-up roller 222. Furthermore, a pull wire 224 is fixed at the end of each take-up roller 222. The pull wire 224 is wound around the fixed wheel 223 to realize the reversal of the pull wire. A part of the pull wire 224 is fixed to the side of the turbulence subnet. When the two oppositely arranged motors 221 reverse synchronously, the take-up roller 222 will reverse, thereby driving the first end of the pull wire to take in and the second part to release, realizing the unfolding of the turbulence subnet and simultaneously limiting the turbulence subnet.

[0079] In another embodiment, two turbulence-inducing subnets, two dual-axis motors 221, and two take-up rollers 222 are provided. The motors 221 are arranged opposite each other in pairs. The two shafts of the oppositely arranged motors are connected to the two ends of the corresponding take-up rollers 222 via couplings or universal joints. This ensures that when the two oppositely arranged motors 221 rotate synchronously in the forward direction, the take-up rollers 222 will rotate in the forward direction. Therefore, by fixing one end of a turbulence-inducing subnet to the take-up roller 222, the turbulence-inducing subnet will be wound up on the take-up roller 222 when the take-up roller 222 rotates in the forward direction. This satisfies the need for winding up the turbulence-inducing subnet. However, in order to achieve the unfolding of the turbulence-inducing subnet... A fixed wheel 223 is provided at the corresponding position of the fan blade at the end of the take-up roller 222. The rolling direction of the fixed wheel 223 is the same as the rolling direction of the take-up roller 222. A pull wire 224 is fixed at the end of each take-up roller 222. The pull wire 224 is wound around the fixed wheel 223 to realize the reversal of the pull wire. A part of the pull wire 224 is fixed to the side of the turbulence subnet. When the two oppositely arranged motors 221 reverse synchronously, the take-up roller 222 will reverse, thereby driving the first end of the pull wire to take in and the second end to release, realizing the unfolding of the turbulence subnet and simultaneously limiting the turbulence subnet.

[0080] When motor 221 starts rotating, the time t for winding can be calculated based on the length of the control line and the rotation speed. If the rotation time of the rotating device is equal to t, the winding will automatically stop.

[0081] Furthermore, such as Figure 4-5 As shown, the device further includes:

[0082] An annular baffle 4 has an L-shaped cross-section and is fitted onto the end of the cylindrical section 11 at the root of the fan blade 1, forming a receiving cavity 401 with the fan blade 1. Multiple motors 221 are located inside the receiving cavity 401.

[0083] Specifically, an annular baffle 4 is provided at the root of the wind turbine blades and forms a receiving cavity 401 with the wind turbine blades 1, so that multiple motors 221 are located in the receiving cavity 401 to protect the motors. In addition, when the deflector is in the rolled-up state, it can be contained in the receiving cavity 401 to achieve rain and sun protection for the deflector. Furthermore, multiple water passage holes are provided at intervals on the end face of the annular baffle 4 that contacts the wind turbine blades 1 to prevent rainwater from accumulating in the receiving cavity 401.

[0084] Furthermore, the annular baffle 4 is designed with an inverted U-shaped structure to block rainwater.

[0085] Furthermore, such as Figure 3 As shown, the second suppression structure 3 includes:

[0086] Mounting bracket 31, on which at least two baffle rods 32 are arranged opposite to each other and at an angle.

[0087] Specifically, the mounting bracket 31 can be configured as a triangular, circular, or rectangular structure and can be directly pasted onto the surface of the fan blades. Two baffle rods 32 are inclined on the mounting bracket 31 at an angle of 45-60 degrees.

[0088] Furthermore, the deflector bar 32 is made of glass fiber and has an anti-corrosion coating on its surface.

[0089] Specifically, to improve the service life of the spoiler 32, the spoiler 32 is made of glass fiber and coated with an anti-corrosion coating. The spoiler 32 and the mounting bracket 31 adopt an integral molding structure, and the end where the spoiler 32 connects to the mounting bracket 31 is also provided with reinforcing ribs to improve stability.

[0090] Furthermore, such as Figure 6 As shown, the device further includes:

[0091] The third suppression structure 5 is disposed at the maximum chord length to the tip section 13 of the wind turbine blade 1, and is used to disrupt the vortex on the rear side of the blade. The third suppression structure 5 includes:

[0092] A connecting rope 51 is provided with turbulence blocks 52 at intervals on the connecting rope 51, and the connecting rope 51 is wound around the maximum chord length of the wind turbine blade 1 to the tip section 13.

[0093] Specifically, the third suppression structure 5 adopts the form of a flow bar, using materials such as foam, plastic, and lightweight rubber. It takes various shapes such as triangular prisms and cuboids, and is strung on a rope or other connecting object. It rotates around the blade several times to disturb the vortex behind the blade.

[0094] More specifically, this disposable device can be used only during installation and can be removed after the wind turbine blades are successfully hoisted and tested. The device is used on the blade tip section, where the length and width gradually decrease from top to bottom, making it easy for the disposable device to slide off automatically after disassembly. The material is lightweight, and the weight and cost are low.

[0095] The present invention also provides a wind turbine generator set, characterized in that it includes the above-mentioned vortex-induced vibration suppression device.

[0096] The optional embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details in the above embodiments. Within the scope of the technical concept of the embodiments of the present invention, various simple modifications can be made to the technical solutions of the embodiments of the present invention, and these simple modifications all fall within the protection scope of the embodiments of the present invention.

[0097] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the embodiments of the present invention will not describe the various possible combinations separately.

[0098] Those skilled in the art will understand that all or part of the steps in the methods of the above embodiments can be implemented by a program instructing related hardware. This program is stored in a storage medium and includes several instructions to cause a microcontroller, chip, or processor to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0099] Furthermore, various different implementations of the present invention can be combined arbitrarily, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed in the present invention.

Claims

1. A vortex-induced vibration suppression device, disposed on a wind turbine blade (1), for suppressing vortex-induced vibration of the wind turbine blade (1), the wind turbine blade (1) comprising a root cylindrical section (11), a section from the root cylindrical end to the maximum chord length (12), and a section from the maximum chord length to the blade tip (13), characterized in that, The device includes: A first suppression structure (2) is disposed at the root cylindrical section (11) of the wind turbine blade (1), used to switch from a wound state to an unwound state when it is determined that the wind turbine unit generates vortex-induced vibration, so as to destroy the vortices around the blade, and to switch from an unwound state to a wound state when it is determined that the wind turbine unit does not generate vortex-induced vibration; the first suppression structure (2) includes: A turbulence mesh (21) is fitted onto the cylindrical section (11) at the root of the fan blade (1), consisting of at least two independently set turbulence sub-mesh. A winding mechanism (22) is located at the end of the cylindrical section (11) at the root of the fan blade (1) and is connected to the turbulence net (21) to realize the winding and unwinding of the turbulence net (21), including: Multiple motors (221) are arranged opposite to each other at the end of the cylindrical section (11) at the root of the fan blade (1). The shafts of two oppositely arranged motors (221) are respectively connected to the two ends of a take-up roller (222) through a coupling. Each take-up roller (222) is connected to the take-up end of the corresponding turbulence subnet. The turbulence subnet is taken up by rotating the shaft of the motor (221). Multiple fixed wheels (223) and multiple pull wires (224) are arranged opposite to each other at the end of the cylindrical section (11) at the root of the wind turbine blade (1). Each pull wire (224) passes through the corresponding fixed wheel (223) and its two ends are connected to the same end of the corresponding take-up roller (222). Each pull wire (224) is also connected to the side of the corresponding turbulence subnet. The turbulence subnet is wound up by rotating the pull wire (224) through the rotation of the take-up roller (222). Multiple second suppression structures (3) are spaced apart on the surface of the root cylindrical end to the maximum chord length section (12) of the wind turbine blade (1) to disrupt the airflow around the blade.

2. The vortex-induced vibration suppression device according to claim 1, characterized in that, The device further includes: An anemometer is installed on the top of the wind turbine casing to obtain wind speed data; Multiple acceleration sensors are installed on each wind turbine blade to acquire blade acceleration data. The presence of vortex-induced vibration in the wind turbine was confirmed, including: If the wind speed is greater than the wind speed threshold and / or the blade acceleration is greater than the acceleration threshold, then the wind turbine is determined to have vortex-induced vibration.

3. The vortex-induced vibration suppression device according to claim 1, characterized in that, The turbulence mesh (21) is made of nylon or fabric.

4. The vortex-induced vibration suppression device according to claim 1, characterized in that, The device further includes: An annular baffle (4) has an L-shaped cross section. The annular baffle (4) is sleeved on the end of the cylindrical section (11) at the root of the fan blade (1) and forms a receiving cavity (401) with the fan blade (1). Multiple motors (221) are located in the receiving cavity (401).

5. The vortex-induced vibration suppression device according to claim 1, characterized in that, The second inhibitory structure (3) includes: Mounting bracket (31), on which at least two baffle rods (32) are arranged opposite to each other and at an angle.

6. The vortex-induced vibration suppression device according to claim 5, characterized in that, The baffle rod (32) is made of glass fiber and has an anti-corrosion coating on its surface.

7. The vortex-induced vibration suppression device according to claim 1, characterized in that, The device further includes: The third suppression structure (5) is disposed on the section from the maximum chord length to the tip (13) of the wind turbine blade (1) to disrupt the vortex on the rear side of the blade. The third suppression structure (5) includes: A connecting rope (51) is provided with turbulence blocks (52) at intervals on the connecting rope (51), and the connecting rope (51) is wound around the maximum chord length of the wind turbine blade (1) to the tip section (13).

8. A wind turbine generator set, characterized in that, The device includes the vortex-induced vibration suppression device according to any one of claims 1-7.

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