External active and passive tuned mass damping device and installation method thereof

Abstract

The present application relates to an external active and passive tuned mass damping device and an installation method thereof. The external active and passive tuned mass damping device comprises: a support body, an inertial body, an elastic member, an electromagnetic drive unit and an eddy current damping assembly. The inertial body is slidingly arranged relative to the support body along a predetermined direction, and the inertial body has an equilibrium position relative to the support body. The elastic member is mechanically coupled between the inertial body and the support body, and applies a reset elastic force to the inertial body when the inertial body leaves the equilibrium position, and the reset elastic force points from the inertial body to the equilibrium position. The electromagnetic drive unit is connected to the support body, and the electromagnetic drive unit has an enabled state and an disabled state. The electromagnetic drive unit forms a magnetic coupling with the inertial body at least in the enabled state. The eddy current damping assembly comprises a first magnet and an induction member. The external active and passive tuned mass damping device can suppress structural and forced vibrations, thereby helping the wind power generation equipment to maintain stable operation under different conditions.

Description

Technical Field

[0001] The present application relates to the technical field of fan vibration control, and in particular to an external active and passive tuned mass damping device and an installation method thereof. Background Art

[0002] Wind energy has become a new energy source with great development potential due to its renewable, clean and pollution-free nature and large energy reserves. It has been rapidly developed in recent years. At present, wind energy can be used by converting it into electrical energy through wind turbines.

[0003] Wind turbines consist of a tower, a nacelle mounted on the tower, and a wind rotor that rotates relative to the nacelle. With the development of wind power technology, the installed capacity of wind turbines has gradually increased, and the height of the towers supporting wind turbines has also increased accordingly. The operating environment of wind turbines is extremely complex. Not only does the tower experience structural vibrations under the combined influence of multiple external dynamic loads such as wind, waves, and water flow, but it also experiences forced vibrations due to the operation of the wind turbine blades. As the tower height increases, structural and forced vibrations become increasingly difficult to control. However, traditional tuned mass dampers can only address single-frequency vibrations, making it difficult for wind turbines to maintain stable operation under different conditions. Summary of the Invention

[0004] Based on this, the present invention provides an external active and passive tuned mass damping device and an installation method thereof, which can solve or at least alleviate the above technical problems.

[0005] The present invention provides an external active and passive tuned mass damping device, comprising:

[0006] Support body;

[0007] An inertial body is slidably arranged relative to the support body along a predetermined direction; the inertial body has a balanced position relative to the support body;

[0008] an elastic member, mechanically coupled between the inertial body and the support body, and applying a restoring elastic force directed toward the equilibrium position to the inertial body when the inertial body leaves the equilibrium position;

[0009] an electromagnetic drive unit connected to the support body; the electromagnetic drive unit has an enabled state and a disabled state; the electromagnetic drive unit forms a magnetic coupling with the inertial body at least in the enabled state; and

[0010] An eddy current damping assembly includes a first magnet and an induction component; one of the first magnet and the induction component is positioned relative to the support body and arranged along the predetermined direction, and the other is connected to the inertial body; electromagnetic induction coupling is formed between the first magnet and the induction component when they move relative to each other.

[0011] In the above-mentioned external active and passive tuned mass damping device, the support body is connected to the tower or the cabin, so that the support body vibrates back and forth continuously with the tower or the cabin. When the support body vibrates in the positive direction along the predetermined direction with the tower, since the inertial body is slidingly arranged relative to the support body, under the action of inertia, the position of the inertial body changes relative to the support body in the reverse direction of the predetermined direction. In the process of the inertial body sliding relative to the support body, electromagnetic induction is formed between the first magnet and the induction member, so that the kinetic energy of the inertial body and the support body is converted into other forms of energy, reducing the relative speed between the inertial body and the support body, thereby producing a damping effect on the vibration of the tower or the cabin. Under the mechanical coupling of the elastic member, there is a reset elastic force between the support body and the inertial body. When the electromagnetic drive unit is in the deactivated state, the reset elastic force can suppress the vibration amplitude of the support body, and have a suppressive effect on one of the vibration phenomena of structural vibration and forced vibration. When the electromagnetic drive unit is in the enabled state, due to the magnetic coupling formed between the electromagnetic drive unit and the inertial body, the driving magnetic force generated by the electromagnetic drive unit on the inertial body can increase the offset amplitude of the inertial body relative to the equilibrium position, so that a larger restoring elastic force is formed between the inertial body and the supporting body, and the bandwidth of the vibration reduction frequency is widened, which has a certain inhibitory effect on both structural vibration and forced vibration. Therefore, the external active and passive tuned mass damping device can suppress both structural vibration and forced vibration, thereby helping the wind power generation equipment to maintain stable operation under different conditions.

[0012] In one embodiment, it further includes a vibration detection element and a control unit; the vibration detection element is used to detect the vibration of the tower and generate a vibration detection signal; the control unit is electrically connected to the vibration detection element and the electromagnetic drive unit; the control unit is at least used to adjust the magnetic coupling relationship between the electromagnetic drive unit and the inertial body according to the vibration detection signal.

[0013] In one embodiment, it further includes a guide rod connected to the support body; the guide rod passes through the inertial body.

[0014] In one embodiment, the inertial body includes an inertial mass block and a second magnet connected to the inertial mass block; the electromagnetic drive unit forms a magnetic coupling with the second magnet at least in the enabled state; and the inertial mass block is slidably arranged relative to the support body.

[0015] In one embodiment, a buffer is further included; the buffer is connected to the support body and faces the inertial body along the predetermined direction, and / or the buffer is connected to the inertial body and faces the support body along the predetermined direction.

[0016] In one embodiment, a plurality of first magnets are connected to a side of the inertial body close to the inductive element; and two adjacent first magnets along the predetermined direction are arranged with opposite polarities.

[0017] The present invention provides a method for installing an external active and passive tuned mass damping device, which is applied to the external active and passive tuned mass damping device of any of the above embodiments, comprising the steps of:

[0018] The support body is connected to the bottom side of the cabin; the support body and the cabin at least enclose an inner cavity, and the inertial body is slidably accommodated in the inner cavity.

[0019] In one embodiment, the angle between the predetermined direction and the predetermined axis is no greater than 10°.

[0020] In one embodiment, the predetermined direction is arranged parallel to the predetermined axis.

[0021] In one embodiment, the induction element is plate-shaped and has a conductor layer and a connecting layer connected to the conductor layer; electromagnetic induction coupling is formed between the first magnet and the conductor layer when they move relative to each other; the connecting layer is connected between the conductor layer and the outside of the cabin. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 FIG. 1 is a perspective schematic diagram of a wind power generation device according to an embodiment of the present application.

[0023] Figure 2 for Figure 1 The wind turbine shown is a three-dimensional schematic diagram from another angle.

[0024] Figure 3 for Figure 2 The figure shows a three-dimensional schematic diagram of an external active and passive tuned mass damping device in a wind turbine.

[0025] Figure 4 for Figure 3 The exploded schematic diagram of the external active and passive tuned mass damping device is shown.

[0026] Figure 5 for Figure 3 A three-dimensional cross-sectional view of an external active and passive tuned mass damping device is shown.

[0027] Figure numerals: 100, wind power generation equipment; 20, tower; 30, nacelle; 40, wind rotor; 41, hub; 42, blade; 50, external active and passive tuned mass damping device; 51, support body; 511, guide rod; 512, buffer member; 513, inner cavity; 52, inertial body; 53, elastic member; 54, electromagnetic drive unit; 55, eddy current damping assembly; 551, first magnet; 552, induction member; L1, predetermined axis; F1, predetermined direction. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solution of this application in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0029] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, integrated connections, mechanical connections, electrical connections, direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0031] The technical solutions provided by the embodiments of the present application are described below with reference to the accompanying drawings.

[0032] The present application provides an external active and passive tuned mass damping device 50. Specifically, the external active and passive tuned mass damping device 50 is applied to a wind power generation device 100. Figures 1 to 5 At least one wind power generation device 100 is shown. Specifically, referring to Figure 1 and Figure 2 The wind power generation equipment 100 is used to convert wind energy into electrical energy.

[0033] Specifically, the wind turbine 100 includes a tower 20, a nacelle 30 mounted on the tower 20, and a rotor 40 that rotates relative to the nacelle 30 about a predetermined axis L1. More specifically, the nacelle 30 is connected to the upper end of the tower 20. Optionally, the nacelle 30 is rotatable relative to the tower 20 along the circumference of the tower 20 to adjust the angle of the nacelle 30 relative to the tower 20. More specifically, the nacelle 30 houses a generator, the rotor of which is coupled to the rotor 40. When the rotor 40 rotates driven by wind, the rotor 40 drives the generator to generate electricity. More specifically, the rotor 40 includes a hub 41 and a plurality of blades 42 coupled to the hub 41. The hub 41 is coupled to the rotor of the generator. The blades 42 are distributed along the circumference of the hub 41.

[0034] Specifically, the wind power generation equipment 100 includes an external active and passive tuned mass damping device 50 , and the external active and passive tuned mass damping device 50 is at least used to suppress vibrations of the tower 20 and the nacelle 30 .

[0035] Combine Figures 3 to 5 As shown, the external active and passive tuned mass damping device 50 includes: a support body 51, an inertial body 52, an elastic member 53, an electromagnetic drive unit 54, and an eddy current damping assembly 55. The inertial body 52 is slidably disposed relative to the support body 51 along a predetermined direction F1 and has an equilibrium position relative to the support body 51. The elastic member 53 is mechanically coupled between the inertial body 52 and the support body 51 and applies a restoring force to the inertial body 52 when the inertial body 52 leaves the equilibrium position. The restoring force is directed from the inertial body 52 to the equilibrium position. The electromagnetic drive unit 54 is connected to the support body 51 and has an active state and an inactive state. At least in the active state, the electromagnetic drive unit 54 forms a magnetic coupling with the inertial body 52, generating a driving magnetic force on the inertial body 52. ​​The direction of the driving magnetic force is the same as the direction of motion of the inertial body 52. ​​The eddy current damping assembly 55 includes a first magnet 551 and an inductive member 552. One of the first magnet 551 and the induction member 552 is positioned relative to the support body 51 and arranged along the predetermined direction F1, and the other is connected to the inertial body 52. ​​Electromagnetic induction coupling is formed between the first magnet 551 and the induction member 552 when they move relative to each other.

[0036] In the external active and passive tuned mass damping device 50 of the present application, the support body 51 is connected to the tower 20 or the nacelle 30, so that the support body 51 vibrates continuously back and forth with the tower 20 or the nacelle 30. When the support body 51 vibrates in the positive direction F1 along the tower 20, the inertial body 52 slides relative to the support body 51. Under the action of inertia, the inertial body 52 changes its position relative to the support body 51 in the negative direction F1. During the sliding of the inertial body 52 relative to the support body 51, electromagnetic induction is generated between the first magnet 551 and the induction element 552, converting the kinetic energy of the inertial body 52 and the support body 51 into other forms of energy, reducing the relative speed between the inertial body 52 and the support body 51, and thus generating a damping effect on the vibration of the tower 20 or the nacelle 30. Under the mechanical coupling of the elastic element 53, a restoring elastic force is exerted between the support body 51 and the inertial body 52. When the electromagnetic drive unit 54 is in the deactivated state, the restoring elastic force can suppress the vibration amplitude of the support body 51, thereby suppressing either structural vibration or forced vibration. When the electromagnetic drive unit 54 is in the activated state, due to the magnetic coupling between the electromagnetic drive unit 54 and the inertial body 52, the driving magnetic force generated by the electromagnetic drive unit 54 on the inertial body 52 can increase the offset amplitude of the inertial body 52 relative to the equilibrium position, thereby forming a larger restoring elastic force between the inertial body 52 and the support body 51 and widening the bandwidth of the vibration reduction frequency, thus suppressing both structural vibration and forced vibration. Therefore, the external active and passive tuned mass damping device 50 can suppress both structural vibration and forced vibration, thereby helping the wind turbine 100 maintain stable operation under different conditions. Because the external active and passive tuned mass damping device 50 achieves a balance between daily energy saving and vibration reduction requirements, it can, to a certain extent, increase the operating time of the wind turbine 100 and improve the operating efficiency of the wind turbine 100.

[0037] During the design stage of the external active and passive tuned mass damping device 50, the specifications or coupling levels of the support body 51, the inertial body 52, the elastic member 53, the electromagnetic drive unit 54 or the eddy current damping assembly 55 are designed according to the requirements for suppressing structural vibration or forced vibration, so that when the electromagnetic drive unit 54 is in an inactive state, the suppressing effect of the external active and passive tuned mass damping device 50 can correspond to one of the structural vibration and the forced vibration; when the electromagnetic drive unit 54 is in an active state, the suppressing effect of the external active and passive tuned mass damping device 50 can correspond to the other vibration, or correspond to both the structural vibration and the forced vibration at the same time.

[0038] Specifically, structural vibration can be understood as vibration corresponding to the first-order frequency of tower 20. More specifically, vibration corresponding to the first-order frequency refers to the vibration mode corresponding to the natural frequency of tower 20 during free vibration. More specifically, vibration primarily at the first-order frequency primarily occurs when wind turbine 100 is shut down.

[0039] Specifically, forced vibration can be understood as vibration corresponding to the 3P frequency of the tower 20. More specifically, the 3P frequency can be understood as a specific excitation frequency generated by the rotation of the wind rotor 40 when the wind turbine 100 is in operation. More specifically, "3P" represents the excitation frequency generated by the three blades 42 on the tower 20 when the wind rotor 40 rotates one circle, which is three times the 1P frequency. The "P" here represents the rotation frequency of the wind rotor 40, that is, the periodic excitation generated by each rotation of the wind rotor 40. Therefore, the 3P frequency is three times the rotation frequency of the wind rotor 40.

[0040] Optionally, when the electromagnetic drive unit 54 is in the deactivated state, there is no magnetic coupling between the electromagnetic drive unit 54 and the inertial body 52. ​​Optionally, when the electromagnetic drive unit 54 is in the deactivated state, a weak magnetic coupling is formed between the electromagnetic drive unit 54 and the inertial body 52.

[0041] It can be understood that the elastic member 53 serves as a rigid element, which can prevent the inertial body 52 from leaving the equilibrium position.

[0042] Specifically, after electromagnetic induction is formed between the first magnet 551 and the induction member 552, the induced current of the induction member 552 forms a magnetic field. This magnetic field and the magnetic field generated by the first magnet 551 form a motion inhibition effect, generating a damping force that hinders the movement of the first magnet 551 relative to the induction member 552, reducing the relative speed between the inertial body 52 and the support body 51, and at the same time, the kinetic energy of the inertial body 52 and the support body 51 is converted into other forms of energy.

[0043] Specifically, combined Figure 2 As shown, the external active and passive tuned mass damping device 50 is disposed outside the nacelle 30, thereby avoiding occupying the internal space of the nacelle 30. This allows for the placement of an inertial body 52 with greater inertia outside the nacelle 30, thereby increasing the upper limit of the travel space of the inertial body 52 and more effectively suppressing structural vibration. Optionally, a support body 51 is connected to the bottom side of the nacelle 30.

[0044] In some embodiments, the support body 51 at least encloses an inner cavity 513 with the cabin 30, and the inertial body 52 is slidably accommodated in the inner cavity 513, thereby preventing the sliding of the inertial body 52 from being disturbed. More specifically, the electromagnetic drive unit 54 is positioned and accommodated in the inner cavity 513. Optionally, the support body 51 is a semi-open structure, and the open end of the support body 51 is arranged opposite to the outer wall surface of the cabin 30, so that the support body 51 and the outer wall surface of the cabin 30 jointly enclose the inner cavity 513. Optionally, the support body 51 includes a bottom shell and a cover plate, and the bottom shell is a semi-open structure, and the bottom shell and the cover plate enclose the inner cavity 513. Furthermore, at least one of the bottom shell and the cover plate is fixedly connected to the cabin 30.

[0045] Optionally, the support body 51 is integrated with the nacelle 30 , thereby making the wind power generation equipment 100 simple in structure and easy to maintain, and helping to reduce the cost of the wind power generation equipment 100 .

[0046] In some embodiments, combined Figure 3 and Figure 5 As shown, the sensing member 552 is positioned relative to the support body 51, and the first magnet 551 is connected to the inertial body 52. ​​Optionally, the length direction of the sensing member 552 is roughly parallel to the predetermined direction F1. Furthermore, the extension length of a single sensing member 552 can be a length close to the sliding range of the inertial body 52. ​​Optionally, the sensing member 552 and the support body 51 are respectively connected to the cabin 30, so that the relative position of the sensing member 552 and the support body 51 can be kept stable. Optionally, the sensing member 552 is connected to the support body 51. Specifically, one side of the inertial body 52 is close to the sensing member 552, and the first magnet 551 is connected to this side of the inertial body 52.

[0047] Optionally, the plurality of sensing elements 552 are linearly distributed, and the distribution direction is substantially parallel to the predetermined direction F1 . Furthermore, the length of the distribution range of the plurality of sensing elements 552 can be close to the length of the sliding range of the inertial body 52 .

[0048] In other embodiments, a plurality of first magnets 551 are positioned relative to the support body 51, and the inductive element 552 is connected to the inertial body 52. ​​The plurality of first magnets 551 are distributed along a predetermined direction F1. Optionally, the first magnets 551 and the support body 51 are each connected to the nacelle 30. Optionally, the first magnets 551 are connected to the support body 51. Specifically, one side of the inertial body 52 is proximal to the first magnets 551, and the inductive element 552 is connected to that side of the inertial body 52.

[0049] In some embodiments, combined Figure 4 and Figure 5As shown, the inertial body 52 is connected to a plurality of first magnets 551 on a side adjacent to the inductive element 552. Two adjacent first magnets 551 along a predetermined direction F1 are arranged with opposite polarities. Specifically, the magnetic poles of the first magnets 551 face the inductive element 552. Optionally, the plurality of first magnets 551 are fixedly connected to the inertial body 52. ​​Optionally, the spacing between any two adjacent first magnets 551 along the predetermined direction F1 is substantially the same, thereby generating a uniform magnetic field.

[0050] Optionally, the first magnet 551 may be a permanent magnet structure. Optionally, the first magnet 551 may be an electromagnet structure.

[0051] In some embodiments, the induction member 552 is plate-shaped and has at least a conductor layer. When moving relative to each other along the predetermined direction F1, electromagnetic induction coupling is formed between the first magnet 551 and the conductor layer, and eddy currents are formed in the conductor layer. The eddy currents cause the conductor layer to heat up, thereby dissipating the kinetic energy of the inertial body 52 and the support body 51 in the form of heat. Specifically, along the relative direction between the induction member 552 and the first magnet 551, the induction member 552 and the first magnet 551 are spaced apart. Furthermore, by setting the size of the gap between the induction member 552 and the first magnet 551, different eddy current damping effects can be formed between the induction member 552 and the first magnet 551. More specifically, the relationship between the gap between the first magnet 551 and the induction member 552 and the size of the eddy current damping can be determined through preliminary tests and numerical analysis. At the construction site of the wind power generation equipment 100 , the specific gap size between the induction element 552 and the first magnet 551 can be determined based on vibration characteristic test results of the main structures such as the tower 20 and the nacelle 30 .

[0052] Furthermore, the induction element 552 further includes a connection layer connected to the conductor layer. The conductor layer is disposed on a side of the connection layer proximal to the first magnet 551. The connection layer connects between the conductor layer and the exterior of the nacelle 30. More specifically, the connection layer connects to the exterior of the bottom of the nacelle 30. Optionally, the conductor layer is made of copper to improve conductivity. Alternatively, the connection layer may be made of steel.

[0053] In some other embodiments, the induction element 552 includes a plurality of coil windings, and electromagnetic induction coupling is formed between the first magnet 551 and the induction element 552, and current is output at both ends of the coil winding, so that the kinetic energy of the inertial body 52 and the support body 51 is output to the outside in the form of electrical energy.

[0054] Optionally, the bottom wall of the cabin 30 is conductive, and the bottom wall of the cabin 30 can be used to charge all or part of the inductive element 552 .

[0055] In some embodiments, combined Figure 2 and Figure 5As shown, one side of the inertial body 52 faces away from the nacelle 30. The electromagnetic drive unit 54 is disposed on the side of the inertial body 52. ​​More specifically, the electromagnetic drive unit 54 is disposed on the lower side of the movable range of the inertial body 52.

[0056] Specifically, since there is no mechanical contact between the electromagnetic drive unit 54 and the inertial body 52, mechanical friction between the electromagnetic drive unit 54 and the inertial body 52 can be avoided, which is beneficial to improving the service life and response speed of the external active and passive tuned mass damping device 50, and is beneficial to reducing the noise generated by the external active and passive tuned mass damping device 50.

[0057] In some embodiments, the electromagnetic drive unit 54 includes a base plate and a stator winding connected thereto. The base plate is connected to the support body 51. In the enabled state, current passes through the stator winding and generates a magnetic field. The magnetic field is coupled with the inertial body 52, so that the stator winding generates a driving magnetic force on the inertial body 52. ​​The inertial body 52 slides relative to the support body 51 under the action of the driving magnetic force, thereby adjusting the position of the inertial body 52 relative to the support body 51. Specifically, when it is necessary to control the position of the inertial body 52 relative to the support body 51, by inputting a specified current into the stator winding, the driving magnetic force and the reset elastic force of the elastic member 53 can be balanced at a specified position point, thereby adjusting the inertial body 52 to remain at a specified position relative to the support body 51.

[0058] It is understood that when the direction of the driving magnetic force is substantially the same as the direction of motion of the inertial body 52, the offset of the inertial body 52 relative to the equilibrium position can be increased. It is also understood that by periodically adjusting the direction of the current passing through the stator winding, the driving magnetic force can be periodically varied, thereby maintaining a larger offset of the inertial body 52.

[0059] Optionally, the base plate is provided with a receiving slot. The stator winding is laid within the receiving slot. Optionally, the stator winding employs a three-phase structure. Specifically, the three-phase windings in the stator winding are arranged linearly in sequence, with the front and rear windings staggered by a distance that is smaller than the dimension of a single winding along the distribution direction.

[0060] In some embodiments, the external active and passive tuned mass damping device 50 further includes a vibration detector and a control unit. The vibration detector is used to detect the vibration of the tower 20 and generate a vibration detection signal. The control unit is electrically connected to the vibration detector and the electromagnetic drive unit 54. The control unit is at least used to adjust the magnetic coupling relationship between the electromagnetic drive unit 54 and the inertial body 52 according to the vibration detection signal. Specifically, the type or quantity of the vibration detector can be selected according to specific vibration resistance requirements and monitoring needs. Optionally, the vibration detector is a vibration sensor. Optionally, the vibration detector is an acceleration sensor.

[0061] Optionally, the control unit is integrated within the nacelle 30. The control unit can adjust the magnitude of the current passing through the stator winding, thereby varying the magnitude of the driving magnetic force on the inertial body 52. ​​This allows the control of the excursion amplitude of the inertial body 52 to correspond to the vibration of the tower 20, thereby more effectively controlling the vibration of the tower 20. In some embodiments, the control unit calculates the required magnitude of the driving magnetic force between the electromagnetic drive unit 54 and the inertial body 52 based on the vibration detection signal. Understandably, the greater the vibration of the tower 20, the greater the current the control unit directs through the stator winding.

[0062] Specifically, since the control unit automatically adjusts the magnitude of the driving magnetic force between the electromagnetic drive unit 54 and the inertial body 52 according to the vibration detection signal, the overall control of the external active and passive tuned mass damping device 50 can be simplified.

[0063] Optionally, the support body 51 has two isolated support points. One end of the elastic member 53 is connected to one of the support points, and the other end is connected to the other support point. The inertial body 52 is connected to a connection point between the two ends of the elastic member 53.

[0064] Optionally, combined Figure 5 As shown, the support body 51 has two supporting surfaces facing each other. One end of the elastic member 53 is against one supporting surface, and the other end is against the other supporting surface. The inertial body 52 is connected to a connection point between the two ends of the elastic member 53.

[0065] Optionally, the support body 51 has two supporting surfaces facing each other. One elastic member 53 is held between one side of the inertial body 52 and one supporting surface, and the other elastic member 53 is held between the other side of the inertial body 52 and the other supporting surface.

[0066] Optionally, the elastic member 53 is a tension spring or a compression spring.

[0067] In some embodiments, combined Figure 4 and Figure 5 As shown, the external active and passive tuned mass damping device 50 further includes a buffer 512. The buffer 512 is used to prevent direct collision between the inertial body 52 and the support body 51. Specifically, the buffer 512 is flexible or elastic. Optionally, the buffer 512 is a rubber pad.

[0068] Optionally, combined Figure 5As shown, the buffer member 512 is connected to the support body 51 and faces the inertial body 52 along a predetermined direction F1. Specifically, the buffer member 512 is positioned relative to the support body 51. A portion of the inner surface of the support body 51 is positioned opposite the inertial body 52 along the predetermined direction F1, and the buffer member 512 covers this inner surface. More specifically, the inertial body 52 is slidably disposed between the two buffer members 512 along the predetermined direction F1. Optionally, the elastic member 53 may be positioned between the buffer member 512 and the inertial body 52.

[0069] Optionally, the buffer 512 is connected to the inertial body 52 and faces the support body 51 along the predetermined direction F1. Specifically, the buffer 512 moves with the inertial body 52. ​​The two opposite sides of the inertial body 52 face the support body 51 along the predetermined direction F1. The two sides of the inertial body 52 are respectively connected to the buffer 512.

[0070] In some embodiments, combined Figure 4 and Figure 5 As shown, the external active and passive tuned mass damping device 50 further includes a guide rod 511 connected to the support body 51. The guide rod 511 extends through the inertial body 52. ​​Specifically, the guide rod 511 is parallel to the predetermined direction F1, thereby guiding the inertial body 52 to slide relative to the support body along the predetermined direction F1. Specifically, both ends of the guide rod 511 are respectively positioned and connected to the support body 51. Furthermore, both ends of the guide rod 511 are respectively fixedly connected to the support body 51.

[0071] Furthermore, the guide rod 511 is inserted into the elastic member 53 and the inertial body 52. ​​Furthermore, the guide rod 511 is inserted into the elastic member 53, the inertial body 52 and the buffer member 512.

[0072] Optionally, a single guide rod 511 is movably inserted into the inertial body 52 , and the cross-section of the guide rod 511 is non-circular.

[0073] Optionally, two or more guide rods 511 are movably inserted into the inertial body 52 , and the two or more guide rods 511 are arranged parallel to each other.

[0074] Optionally, the inertial body 52 as a whole adopts a permanent magnet structure.

[0075] Optionally, the inertial body 52 includes an inertial mass block and a second magnet connected to the inertial mass block. The electromagnetic drive unit 54 forms a magnetic coupling with the second magnet at least in the enabled state. The inertial mass block is slidingly arranged relative to the support body 51. Specifically, one side of the inertial mass block faces the electromagnetic drive unit 54, and the second magnet is connected to this side of the inertial mass block. Optionally, a plurality of second magnets are arranged along a linear distribution, and the distribution direction is parallel to the sliding direction of the inertial body 52 relative to the support body 51. Optionally, a plurality of grooves are provided on the side of the inertial mass block facing the electromagnetic drive unit 54, and the second magnets are accommodated in the grooves.

[0076] In some embodiments, when the phase relationship between the currents in the stator windings changes, the stator windings can generate a shifting magnetic field. More specifically, the strong magnetic region within this magnetic field shifts relative to the stator windings. After the second magnet couples with this magnetic field, the position of the inertial body 52 changes with the magnetic field, thereby adjusting the position of the inertial body 52 relative to the support. More specifically, the position of the second magnet coincides with the strong magnetic region within this magnetic field.

[0077] Optionally, the mass of the inertial mass block is 20 tons or adjusted according to actual needs. Optionally, the second magnet can be a permanent magnet structure. Optionally, the second magnet can also be an electromagnet structure.

[0078] In some embodiments, the angle between the predetermined direction F1 and the predetermined axis L1 is no greater than 10°, making the predetermined direction F1 substantially perpendicular to the rotational plane of the blade 42. This allows the external active and passive tuned mass damping device 50 to suppress both first-order frequency vibrations and 3P frequency vibrations, thereby enhancing the vibration suppression effect under different conditions. Furthermore, the predetermined direction F1 is parallel to the predetermined axis L1.

[0079] Optionally, all components of the external active and passive tuned mass damping device 50 are made of metal materials, so that it can move stably for a long time in a relatively harsh environment.

[0080] The present application also provides a method for installing an external active and passive tuned mass damper device, which is applied to the external active and passive tuned mass damper device 50 of any of the above embodiments, and includes at least one of the following steps:

[0081] The support body 51 is connected to the bottom side of the cabin 30. The support body 51 and the cabin 30 at least enclose an inner cavity 513. The inertial body 52 is slidably accommodated in the inner cavity 513.

[0082] The angle between the predetermined direction F1 and the predetermined axis L1 is not greater than 10°;

[0083] The induction element 552 is plate-shaped and has a conductor layer and a connection layer connected to the conductor layer; electromagnetic induction coupling is formed between the first magnet 551 and the conductor layer when they move relative to each other; the connection layer is connected between the conductor layer and the outside of the cabin 30.

[0084] Furthermore, the predetermined direction F1 is arranged parallel to the predetermined axis line L1.

[0085] The above embodiments are merely descriptions of the preferred embodiments of the present application and do not limit the scope of the present application. Without departing from the design spirit of the present application, various modifications and improvements made to the technical solutions of the present application by ordinary engineering and technical personnel in this field should fall within the scope of protection determined by the claims of the present application.

Claims

1. An external active and passive tuned mass damping device, characterized in that: include: Support body; An inertial body is slidably arranged relative to the support body along a predetermined direction; The inertial body has an equilibrium position relative to the support body; an elastic member, mechanically coupled between the inertial body and the support body, and applying a restoring elastic force directed toward the equilibrium position to the inertial body when the inertial body leaves the equilibrium position; an electromagnetic drive unit connected to the support body; the electromagnetic drive unit has an enabled state and a disabled state; the electromagnetic drive unit forms a magnetic coupling with the inertial body at least in the enabled state; and An eddy current damping assembly, comprising a first magnet and an induction member; one of the first magnet and the induction member is positioned relative to the support body and arranged along the predetermined direction, and the other is connected to the inertial body; electromagnetic induction coupling is formed between the first magnet and the induction member when they move relative to each other; The device further comprises a vibration detector and a control unit; the vibration detector is used to detect the vibration of the tower and generate a vibration detection signal; the control unit is electrically connected to the vibration detector and the electromagnetic drive unit; the control unit is at least used to adjust the magnetic coupling relationship between the electromagnetic drive unit and the inertial body according to the vibration detection signal; The inertial body includes an inertial mass block and a second magnet connected to the inertial mass block; the electromagnetic drive unit forms a magnetic coupling with the second magnet at least in the activated state; the inertial mass block is slidably arranged relative to the support body; The external active and passive tuned mass damping device further includes a buffer; the buffer is connected to the support body and faces the inertial body along the predetermined direction, and / or the buffer is connected to the inertial body and faces the support body along the predetermined direction; The inertial body is connected to a plurality of first magnets on a side close to the induction element; two adjacent first magnets along the predetermined direction are arranged with opposite polarities.

2. The external active and passive tuned mass damping device according to claim 1, characterized in that: It also includes a guide rod connected to the support body; the guide rod passes through the inertial body.

3. A method for installing an external active and passive tuned mass damping device, characterized in that: The external active and passive tuned mass damping device according to any one of claims 1 to 2 comprises the following steps: the support body is connected to the bottom side of the cabin; the support body and at least the cabin enclose an inner cavity, and the inertial body is slidably accommodated in the inner cavity.

4. The installation method of the external active and passive tuned mass damping device according to claim 3, characterized in that: The angle between the predetermined direction and the predetermined axis is no greater than 10°.

5. The installation method of the external active and passive tuned mass damping device according to claim 4, characterized in that: The predetermined direction is arranged parallel to the predetermined axis.

6. The installation method of the external active and passive tuned mass damping device according to claim 3, characterized in that: The induction component is plate-shaped and has a conductor layer and a connection layer connected to the conductor layer; electromagnetic induction coupling is formed between the first magnet and the conductor layer when they move relative to each other; the connection layer is connected between the conductor layer and the outside of the cabin.

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