Damper, tower assembly, and wind turbine generator system

Abstract

The present disclosure provides a damper, a tower assembly and a wind turbine generator unit, the damper can include a base and a mass block assembly, the mass block assembly can include a mass block and a conductor plate, the conductor plate can move along the circumference of the base, the mass block is pivotally connected to the conductor plate, and the mass block is supported on the base, since the conductor plate can move along the circumference of the base, it can move to the position where damping is required, in this way, the damper structure is relatively compact, the damper can adapt to vibrations in different directions, and has good versatility.

Description

Technical Field

[0001] This disclosure pertains to the field of wind power generation technology, and particularly relates to a damper, tower assembly, and wind turbine generator set. Background Technology

[0002] With the increasing popularity of green energy, wind turbine generators are receiving more and more attention. A typical wind turbine generator includes a tower, a rotor mounted on top of the tower, and a generator. The generator rotor is fixed to the rotor, and the rotation of the rotor drives the generator to produce electricity. As a crucial load-bearing component of the wind turbine generator, the tower, due to its complex operating conditions, may experience excessive vibration due to wind loads, wave loads, and other factors during use.

[0003] To control tower vibration, wind turbine generators typically include dampers. However, due to the limited space within the tower for various electrical cabinets and pre-installed wiring, this disclosure urgently requires a compact damper to accommodate the vibration. Furthermore, since current linear dampers are two-dimensional and their vibration reduction effect is generally limited, a 360-degree vibration-damping damper is proposed to improve the vibration reduction effect. Summary of the Invention

[0004] The main objective of this disclosure is to provide a damper, tower assembly, and wind turbine generator set, so as to make the damper structure more compact, the vibration reduction effect more significant, and the versatility of the vibration reduction damper.

[0005] To achieve the aforementioned objectives, this disclosure provides the following technical solution:

[0006] In one aspect of this disclosure, a damper is provided, the damper including a base and a mass block assembly, the mass block assembly including a mass block and a conductor plate, the conductor plate being movable circumferentially along the base, the mass block being movable circumferentially along the base, the mass block being pivotally connected to the conductor plate, and the mass block being supported on the base.

[0007] The damper provided in this disclosure has a compact structure because the conductor plate can move circumferentially along the base to the position where damping is required. This design allows the damper to adapt to vibrations in different directions, providing excellent versatility. Furthermore, to accommodate vibrations in any direction, the top surface of the damper's base is designed with a conical structure.

[0008] In one exemplary embodiment of this disclosure, the mass block assembly may further include a magnet disposed on the side of the mass block facing the conductor plate, wherein the mass block is capable of rotating relative to the conductor plate and cutting magnetic field lines when the conductor plate moves.

[0009] With this configuration, the magnet can be fixed to the mass block so that when the conductor plate moves circumferentially along the base, the mass block can rotate relative to the conductor plate, and the magnet can rotate relative to the conductor plate along with the mass block. The conductor plate rotates in the magnetic field formed by the magnet and cuts the magnetic field lines, thereby creating a damping force between the original magnetic field and the conductor plate that hinders their relative rotation.

[0010] Specifically, as the conductor plate rotates relative to the mass block, it rotates in the magnetic field formed by the magnet and cuts the magnetic field lines. Eddy currents are generated in the conductor plate, and the eddy currents generate a new magnetic field in the opposite direction to the original magnetic field. This creates a damping force between the original magnetic field and the conductor plate that hinders their relative rotation. At the same time, the resistance effect of the conductor plate converts the kinetic energy gained by the conductor plate into heat energy through the eddy currents and dissipates it.

[0011] Optionally, the magnet may include a first magnet and a second magnet with opposite magnetic pole directions to generate magnetic field lines between adjacent first and second magnets, the first and second magnets being alternately arranged circumferentially along the pivot axis of the mass block. Thus, by rotating the conductor plate relative to the mass block, the conductor plate can cut the magnetic field lines, thereby generating eddy currents on the conductor plate to cause the damper to produce a damping force.

[0012] To facilitate magnet cooling and prevent magnet demagnetization due to high temperatures, the conductor plate is specifically provided with multiple through holes.

[0013] Furthermore, the mass block assembly may also include a connecting shaft, one end of which can be fixed to the conductor plate, and the other end of which is pivotally connected to the central column. The mass block is rotatably mounted on the connecting shaft. With this configuration, the conductor plate can rotate with the connecting shaft, and the mass block and the conductor plate can be connected by the connecting shaft, which also provides the mass block with a rotation axis.

[0014] Specifically, the mass block is disposed on the top surface of the base. Since the base is in contact with the mass block, the mass block can rotate around the connecting shaft during the circumferential rotation of the conductor plate along the base, thereby rotating relative to the conductor plate.

[0015] Optionally, the mass block assembly may further include a central column, which extends longitudinally and is fixed to the middle of the base. The connecting shaft is connected to the central column at a predetermined angle, and the other end of the connecting shaft is pivotally connected to the central column. With this configuration, the mass block is stably supported on the top surface of the base during rotation relative to the connecting shaft, thanks to the predetermined angle connection between the central column and the connecting shaft, thus improving the operational reliability of the damper.

[0016] In another exemplary embodiment of this disclosure, the conductor plate is disposed at the radially outer end of the connecting shaft, and the central column is disposed perpendicular to the connecting shaft. In this embodiment, the connecting shaft can extend horizontally.

[0017] Specifically, the top surface of the base is a downward-extending conical surface, and the angle θ between the conical surface and the horizontal plane can satisfy 5°≤θ≤10°. With this configuration, the base can be formed into a frustum shape, adapting to vibrations in any direction, and the mass block assembly can actively respond to adjust to the corresponding position. When the damper is applied to the tower, when the tower vibrates, the mass block and conductor plate will rotate around the central column to a suitable position. During this process, the mass block simultaneously rotates around the connecting shaft.

[0018] In another exemplary embodiment of this disclosure, the mass block assembly may further include a transition member that can wrap around the circumferential outer peripheral wall of the mass block, the outer surface of the transition member conforming to the top surface of the base. Thus, by providing the transition member, the contact area between the mass block and the base can be increased, avoiding damage caused by localized stress concentration and improving the service life of the damper.

[0019] Optionally, the outer surface of the transition member is an arc surface, and the top surface of the base extends downward from the center to the edge. For example, but not limited to, the outer periphery of the transition member can be drum-shaped.

[0020] In another exemplary embodiment of this disclosure, a first bearing is provided between the central column and the connecting shaft, so that the connecting shaft can rotate smoothly around the central column, avoiding jamming during the rotation of the connecting shaft, thereby further improving the operational reliability of the damper.

[0021] Optionally, a second bearing is provided between the mass block and the connecting shaft, which improves the smoothness of the mass block's rotation around the connecting shaft and further improves the operational reliability of the damper.

[0022] Furthermore, the mass block is a steel block, and the conductor plate is a copper plate or an aluminum plate. In this way, the mass block and the conductor plate can be made of common materials, which reduces the manufacturing cost of the damper to some extent.

[0023] In another aspect, this disclosure provides a tower assembly including a tower body and a damper as described above, with the base fixed to the tower body. Thus, by mounting the damper on the tower body, the vibration resistance of the tower assembly is improved. Furthermore, the damper has a simple and compact structure and low manufacturing cost, thereby reducing the manufacturing cost of the tower assembly.

[0024] In another aspect, this disclosure provides a wind turbine generator set including a tower assembly as described above. Thus, by mounting a damper on the tower body, the vibration resistance of the tower assembly is improved, thereby enhancing the vibration resistance of the wind turbine generator set. Furthermore, the damper has a simple structure, is easy to maintain, and is compact, resulting in low manufacturing costs, thereby reducing the manufacturing cost of the wind turbine generator set.

[0025] Optionally, the tower body can be a highly flexible tower, but is not limited thereto. Attached Figure Description

[0026] The above and / or other objects and advantages of this disclosure will become clearer from the following description of embodiments taken in conjunction with the accompanying drawings, in which:

[0027] Figure 1 A structural diagram of a damper provided for an exemplary embodiment of this disclosure.

[0028] Figure 2 for Figure 1 A partial cross-sectional view of the damper in the image.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Base; 2. Mass block assembly;

[0031] 3. Central column; 4. First bearing;

[0032] 5. Second bearing; 21. Mass block;

[0033] 22. Magnet; 23. Conductor plate;

[0034] 24. Connecting shaft; 25. Transition component;

[0035] 26. Through hole. Detailed Implementation

[0036] Example embodiments will now be described more fully with reference to the accompanying drawings. However, it should not be construed that the embodiments of this disclosure are limited to those described herein. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed descriptions will be omitted.

[0037] Reference Figure 1 and Figure 2 In one aspect of this disclosure, a damper is provided, which may include a base 1 and a mass block assembly 2. The mass block assembly 2 may include a mass block 21 and a conductor plate 23. The conductor plate 23 is movable circumferentially along the base 1. The mass block 21 is pivotally connected to the conductor plate 23 and is supported on the base 1.

[0038] The damper provided in this disclosure has a compact structure because the conductor plate 23 can move circumferentially along the base 1 to the position where damping is required. The damper can adapt to vibrations in different directions and has good versatility.

[0039] Specifically, the mass block 21 is supported on the top surface of the base 1. Since the base 1 is in contact with the mass block 21, the mass block 21 can roll relative to the base 1 during the circumferential rotation of the conductor plate 23 along the base 1, and thus can rotate relative to the conductor plate 23. Figure 2 As shown, when the conductor plate 23 rotates clockwise along the base 1, the mass block 21 will roll counterclockwise on the base 1, as... Figure 2 As indicated by the middle arrow.

[0040] The damper provided in this disclosure can be applied to tall structural components, such as, but not limited to, towers. The damper can be applied to towers and can convert the vibration of the tower into the rotation of the conductor plate 23 and the rotation of the mass block 21 and the rotation with the conductor plate 23. That is, the mechanical energy of the tower's vibration is converted into the mechanical energy of the damper, thereby reducing the vibration amplitude of the tower.

[0041] In this embodiment, the mechanical motion of the mass block 21 can be decomposed into its revolution around the base 1 along with the conductor plate 23 and its rotation relative to the conductor plate 23. The mechanical energy of the mass block 21 can include the mechanical energy of its rotation and its revolution. The rotation of the mass block 21 relative to the conductor plate 23 is equivalent to its rolling relative to the base 1.

[0042] As an example, mass block 21 can provide counterweight for the damper. For example, but not limited to, mass block 21 can be a steel block. Mass block 21 can be made of common materials, which reduces the manufacturing cost of the damper to some extent, but is not limited thereto. Mass block 21 can also be made of other materials with higher density. To improve the smoothness of the rolling of mass block 21, mass block 21 can be roughly cylindrical, and the central axis of the cylinder can coincide with the axis of rotation of mass block 21, but is not limited thereto.

[0043] In an exemplary embodiment of this disclosure, the mass block assembly 2 may further include a magnet 22, which may be disposed on the side of the mass block 21 facing the conductor plate 23, such that when the conductor plate 23 moves, the mass block 21 can rotate relative to the conductor plate 23 and cut magnetic field lines.

[0044] With this configuration, the magnet 22 can be fixed on the mass block 21 so that when the conductor plate 23 moves along the circumference of the base 1, the mass block 21 can rotate relative to the conductor plate 23, and the magnet 22 can rotate relative to the conductor plate 23 together with the mass block 21. The conductor plate 23 rotates in the magnetic field formed by the magnet 22 and cuts the magnetic field lines, thereby forming a damping force between the original magnetic field and the conductor plate 23 that hinders the relative rotation of the two.

[0045] Specifically, as the conductor plate 23 rotates relative to the mass block 21, it rotates in the magnetic field formed by the magnet 22 and cuts the magnetic field lines. Eddy currents are generated in the conductor plate 23, and the eddy currents generate a new magnetic field opposite to the original magnetic field. This creates a damping force between the original magnetic field and the conductor plate 23 that hinders their relative rotation. At the same time, the resistance effect of the conductor plate 23 converts the kinetic energy gained by the conductor plate 23 into heat energy through the eddy currents and dissipates it.

[0046] The damper provided in this embodiment can convert the mechanical energy of the tower structure's vibration into the mechanical energy of the conductor plate 23, the mechanical energy of the mass block 21, and the heat energy generated on the conductor plate 23, further improving the damper's suppression effect. When the damper is applied to the tower, during the operation of the wind turbine generator, the tower's mechanical energy of vibration can be converted into the aforementioned mechanical energy of the conductor plate 23, the mechanical energy of the mass block 21, and the heat energy generated on the conductor plate 23.

[0047] Optionally, magnet 22 may include a first magnet and a second magnet with opposite magnetic pole directions to generate magnetic field lines between adjacent first and second magnets. The first and second magnets may be alternately arranged circumferentially along the pivot axis of the mass block 21. In this way, by rotating the conductor plate 23 relative to the mass block 21, the conductor plate 23 can cut the magnetic field lines, thereby generating eddy currents on the conductor plate 23. The eddy currents can then be converted into heat energy and dissipated to generate a damping force in the damper.

[0048] To facilitate ventilation and heat dissipation of the conductor plate 23, multiple through holes 26 may be provided on the conductor plate 23. In addition, providing through holes 26 on the conductor plate 23 can reduce the weight of the conductor plate 23. As an example, the multiple through holes 26 may be arranged at equal angular intervals along the circumference of the conductor plate 23, but this is not a limitation.

[0049] As an example, the conductor plate 23 can be a conductor, for example, but not limited to, a copper plate or an aluminum plate. Thus, the conductor plate 23 can be made of common materials, reducing the manufacturing cost of the damper to some extent. Alternatively, the conductor plate 23 can be formed as a ring, and can be positioned opposite the magnet 22. The conductor plate 23 can be fixed to the connecting shaft 24 (described below) by a non-conductive support frame, but is not limited thereto.

[0050] Furthermore, the mass block assembly 2 may also include a connecting shaft 24, one end of which can be fixed to the conductor plate 23, and the other end of which is pivotally connected to the base 1. The mass block 21 is rotatably fitted onto the connecting shaft 24. With this configuration, the conductor plate 23 can rotate with the connecting shaft 24. The connecting shaft 24 can connect the mass block 21 and the conductor plate 23, and it also provides a rotation axis for the mass block 21 to rotate.

[0051] Optionally, a second bearing 5 can be provided between the mass block 21 and the connecting shaft 24. This improves the smoothness of the rotation of the mass block 21 around the connecting shaft 24 and further enhances the operational reliability of the damper. Specifically, a bearing, which can be a second bearing 5, is provided at both the outer and inner ends of the mass block 21 along the axial direction of the connecting shaft 24. This improves the smoothness of the rotation of the mass block 21 around the connecting shaft 24 and further enhances the operational reliability of the damper.

[0052] Optionally, the mass block assembly 2 may further include a central column 3, which can extend longitudinally and be fixed to the middle of the base 1. The connecting shaft 24 can be connected to the central column 3 at a predetermined angle, and the other end of the connecting shaft 24 is pivotally connected to the central column 3. With this configuration, the mass block 21 can be stably supported on the top surface of the base 1 during rotation relative to the connecting shaft 24 by connecting the central column 3 at a predetermined angle, thereby improving the operational reliability of the damper.

[0053] In another exemplary embodiment of this disclosure, the conductor plate 23 is disposed at the radially outer end of the connecting shaft 24, and the central column 3 is disposed perpendicularly to the connecting shaft 24. In this embodiment, the connecting shaft 24 can extend horizontally.

[0054] Referring again to the attached diagram, the top surface of the base 1 can be roughly frustum-shaped. A central column 3 can be fixedly installed at the center of the frustum, meaning the bottom end of the central column 3 can be fixed at the center of the base 1. A first bearing 4 can be fitted onto the top end of the central column 3, and the radial inner end of the connecting shaft 24 can be fitted onto the first bearing 4. It can be understood that the outer ring of the first bearing 4 can be located at the radial inner end of the connecting shaft 24, and the inner ring can be located at the top end of the central column 3. This allows the connecting shaft 24 to rotate smoothly around the central column 3, preventing jamming during rotation and further improving the operational reliability of the damper.

[0055] Optionally, the first bearing 4 can also be disposed between the base 1 and the central column 3, so that the central column 3 can rotate relative to the base 1. The top end of the central column 3 can be fixedly connected to the radial inner end of the connecting shaft 24, but is not limited thereto.

[0056] Referring again to the accompanying drawings, in another exemplary embodiment of this disclosure, the top surface of the base 1 is a downwardly extending conical surface, and the angle θ between the conical surface and the horizontal plane can satisfy 5°≤θ≤10°. With this configuration, the base 1 can be formed in a frustum shape, adapting to vibrations in any direction, and the mass block assembly 2 can actively respond to adjust to the corresponding position.

[0057] When the included angle θ is less than 5°, the damping frequency of the damper is too small, resulting in a slow response of the damper; when the included angle θ is greater than 10°, the damping frequency of the damper is too large, resulting in a rapid response of the damper, which is not conducive to suppressing vibration.

[0058] When the damper is applied to the tower, when the tower vibrates, the mass block 21 and the conductor plate 23 will rotate around the central column 3 to a suitable position, that is, the mass block 21 revolves around the central column 3. During this process, the mass block 21 also rotates around the connecting shaft 24, that is, the mass block 21 rotates around the connecting shaft 24.

[0059] When the tower vibrates or swings in a certain direction, the top surface of the base 1 changes relative to the horizontal plane, thereby driving the mass block 21 to roll in the swing direction of the tower. When the tower swings back, the mass block 21 rolls in the opposite direction, thus forming a reciprocating rolling motion of the mass block 21 perpendicular to the swing direction of the tower. The damper achieves the function of suppressing vibration.

[0060] Specifically, the mass block assembly 2 may further include a transition member 25, which can wrap around the circumferential outer wall of the mass block 21, and the outer surface of the transition member 25 conforms to the top surface of the base 1. In this way, by providing the transition member 25, the contact area between the mass block 21 and the base 1 can be increased, avoiding damage caused by local stress concentration and improving the service life of the damper.

[0061] The transition member 25 and the mass block 21 can be formed independently and then assembled together. This facilitates replacement when the transition member 25 is severely worn, thereby reducing the maintenance cost of the damper. In this embodiment, the transition member 25 and the mass block 21 can be made of the same material, for example, but not limited to, the transition member 25 can be made of steel.

[0062] Optionally, the outer surface of the transition member 25 is an arc surface, and the top surface of the base 1 extends downward from the center to the edge. For example, but not limited to, the outer periphery of the transition member 25 may be drum-shaped.

[0063] The damper provided in this disclosure has the following beneficial effects:

[0064] Compared with a single-pendulum tuned damper, the damper provided in this disclosure has a more compact structure, requires less height space, and requires less weight.

[0065] Conventional linear tuned mass dampers suppress vibrations in only one direction. To achieve full-circumference damping, two linear dampers often need to be arranged vertically. Therefore, the damper provided in this disclosure is more efficient.

[0066] The damper structure disclosed herein is simpler and has lower installation and assembly requirements.

[0067] In another aspect, this disclosure provides a tower assembly including a tower body and the damper described above, with a base 1 fixed to the tower body. Thus, by mounting the damper on the tower body, the vibration resistance of the tower assembly is improved. Furthermore, the damper has a simple and compact structure and low manufacturing cost, thereby reducing the manufacturing cost of the tower assembly.

[0068] In another aspect, this disclosure provides a wind turbine generator set including a tower assembly as described above. Thus, by mounting a damper on the tower body, the vibration resistance of the tower assembly is improved, thereby enhancing the vibration resistance of the wind turbine generator set. Furthermore, the damper has a simple structure, is easy to maintain, and is compact, resulting in low manufacturing costs, thereby reducing the manufacturing cost of the wind turbine generator set.

[0069] Optionally, the tower body can be a highly flexible tower, but is not limited thereto.

[0070] A flexible tower, also known as a flexible turbine tower, is a tower product specifically designed for low wind speed, large capacity, and large rotor units. The flexible tower design utilizes the effects of wind shear, increasing tower height to access higher and more stable high-altitude wind resources, thereby increasing power generation. Simultaneously, refined tower design and advanced control technology, matched with the overall turbine development, achieve the rational use of steel and reduce tower weight.

[0071] The "flexibility" in flexible towers is related to the rated speed of the wind turbine impeller. The first-order frequency at the rated speed of the impeller is called 1P, and the third-order frequency is called 3P. When the frequency of the tower itself is above the first-order frequency of the impeller, it is a traditional tower; when it is below 1P, it is a flexible tower.

[0072] In the description of this disclosure, it should be understood that the terms “center,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure.

[0073] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0074] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" 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 between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0075] The features, structures, or characteristics described in this disclosure can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the foregoing description to give a full understanding of embodiments of this disclosure. However, those skilled in the art will recognize that the technical solutions of this disclosure can be practiced without one or more of the specific details described, or other methods, components, materials, etc., can be employed. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring various aspects of this disclosure.

Claims

1. A damper characterized by, The damper comprises: a base (1), a mass block assembly (2) comprising a mass block (21) and a conductor plate (23), the conductor plate (23) moving along the circumference of the base (1), the mass block (21) moving along the circumference of the base (1), the mass block (21) being pivotally connected to the conductor plate (23), the mass block (21) being supported on the base (1).

2. The damper of claim 1, wherein The mass block assembly (2) further comprises a magnet (22) arranged on the side of the mass block (21) facing the conductor plate (23), so that the mass block (21) can rotate relative to the conductor plate (23) and cut the magnetic induction lines when the conductor plate (23) moves.

3. The damper of claim 2, wherein, The magnet (22) comprises a first magnet and a second magnet with opposite magnetic pole directions, the first magnet and the second magnet being alternately arranged along the circumference of the pivot axis of the mass block (21).

4. The damper of claim 1, wherein The mass block assembly (2) further comprises a connecting shaft (24), one end of the connecting shaft (24) being fixed to the conductor plate (23), the other end of the connecting shaft (24) being pivotally connected to the base (1), the mass block (21) being rotatably sleeved on the connecting shaft (24).

5. The damper of claim 4, wherein, The mass block assembly (2) further comprises a central column (3) longitudinally extending and fixed to the middle part of the base (1), the connecting shaft (24) being connected to the central column (3) at a predetermined angle, the other end of the connecting shaft (24) being pivotally connected to the central column (3).

6. The damper of claim 5, wherein, The conductor plate (23) is arranged at the radially outer end of the connecting shaft (24), the central column (3) being arranged perpendicularly to the connecting shaft (24).

7. Damper according to any one of claims 1-6, characterized in that The top surface of the base (1) is a downwardly extending conical surface, the included angle θ between the conical surface and the horizontal plane satisfying 5°≤θ≤10°.

8. The damper of claim 7, wherein, The mass block assembly (2) further comprises a transition piece (25) wrapped on the peripheral wall in the circumference of the mass block (21), the outer surface of the transition piece (25) being conformal to the top surface of the base (1).

9. The damper of claim 8, wherein, The outer surface of the transition piece (25) is a circular arc surface, the top surface of the base (1) being inclined downwardly from the middle part to the edge.

10. The damper of claim 5, wherein A first bearing (4) is arranged between the central column (3) and the connecting shaft (24).

11. The damper of claim 4, wherein A second bearing (5) is arranged between the mass block (21) and the connecting shaft (24).

12. The damper of claim 1, wherein The mass block (21) is a steel block, and the conductor plate (23) is a copper plate or an aluminum plate.

13. The damper of claim 12, wherein, A plurality of through holes are arranged on the conductor plate (23).

14. A tower assembly characterized by, The tower assembly comprises a tower body and the damper as claimed in any one of claims 1-13, the base (1) being fixed to the tower body.

15. A wind power unit, characterized in that The wind turbine generator set comprises the tower assembly as claimed in claim 14.

16. A wind power plant according to claim 15, wherein The tower body is a high-flex tower.

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