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

Abstract

The invention 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 supporting body, an inertia body, an elastic piece, an electromagnetic driving unit and an eddy current damping assembly. The inertia body slides relative to the supporting body in the preset direction and has a balance position relative to the supporting body. The elastic piece is mechanically coupled between the inertia body and the supporting body and applies reset elastic force to the inertia body when the inertia body leaves the balance position, and the reset elastic force points to the balance position from the inertia body. The electromagnetic driving unit is connected to the supporting body and has an enabled state and a disabled state. The electromagnetic drive unit forms magnetic coupling with the inertial body at least in the enabled state. The eddy current damping assembly comprises a first magnet and an induction piece. The external active and passive tuned mass damping device can suppress the structure and forced vibration, so that the wind power generation equipment can keep stable operation in different states.

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 characteristics and large energy reserves. It has been developing rapidly in recent years. At present, wind energy can be used as long as it is converted into electrical energy through wind power generation equipment.

[0003] Wind power generation equipment includes a tower, a nacelle installed 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 power generation equipment has gradually increased, and the height of the supporting tower of wind power generation equipment has also increased accordingly. The working environment of wind power generation equipment is extremely complex. Not only will the tower experience structural vibration under the combined influence of multiple external dynamic loads such as wind, waves, and water flow, but the tower will also experience forced vibration due to the operation of the blades of the wind power generation equipment. As the height of the tower increases, structural vibration and forced vibration become more difficult to control. However, traditional tuned mass dampers can only target single-frequency vibrations, making it difficult for wind power generation equipment 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 supporting body, and applying a restoring elastic force pointing to 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] The eddy current damping component comprises 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 forward direction along the predetermined direction with the tower, due to the sliding arrangement of the inertial body 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 along 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 being able to produce 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 an inactive state, the reset elastic force can suppress the vibration amplitude of the support body, and have an inhibitory 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 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 deviation amplitude of the inertial body relative to the equilibrium position, so that a larger reset 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 of the embodiments, it also includes a vibration detection component and a control unit; the vibration detection component 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 component 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 of the embodiments, it further includes a guide rod connected to the support body; the guide rod passes through the inertial body.

[0014] In one of the embodiments, 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 of the embodiments, a plurality of the first magnets are connected to the inertial body at a side close to the induction element; and two adjacent first magnets along the predetermined direction are arranged with opposite polarities.

[0017] The present invention provides an installation method of 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, and comprises the following steps:

[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 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional 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 at 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 power generation equipment.

[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 line; F1, predetermined direction. DETAILED DESCRIPTION

[0028] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0029] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0030] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, or the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] The technical solution provided by the embodiments of the present application is described below in conjunction with 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 device 100 is used to convert wind energy into electrical energy.

[0033] Specifically, the wind power generation equipment 100 includes a tower 20, a nacelle 30 mounted on the tower 20, and a wind rotor 40 that rotates relative to the nacelle 30 around a predetermined axis L1. More specifically, the nacelle 30 is connected to the upper end of the tower 20. Optionally, the nacelle 30 can be rotatably arranged 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, a generator is arranged in the nacelle 30, and the rotor of the generator is connected to the wind rotor 40, so that when the wind rotor 40 rotates driven by wind, the wind rotor 40 can drive the generator to operate and generate electrical energy. More specifically, the wind rotor 40 includes a hub 41 and a plurality of blades 42 connected to the hub 41. The hub 41 is connected to the rotor of the generator. The plurality of blades 42 are distributed along the periphery 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] Combination 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 arranged relative to the support body 51 along a predetermined direction F1, and the inertial body 52 has a balanced 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 reset elastic force to the inertial body 52 when the inertial body 52 leaves the balanced position, and the reset elastic force points from the inertial body 52 to the balanced position. The electromagnetic drive unit 54 is connected to the support body 51, and the electromagnetic drive unit 54 has an enabled state and a disabled state. The electromagnetic drive unit 54 forms a magnetic coupling with the inertial body 52 at least in the enabled state, and the electromagnetic drive unit 54 generates a driving magnetic force on the inertial body 52, and the direction of the driving magnetic force is the same as the movement direction of the inertial body 52. ​​The eddy current damping assembly 55 includes a first magnet 551 and an induction 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 continuously vibrates 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, since the inertial body 52 is slidably arranged relative to the support body 51, under the action of inertia, the inertial body 52 changes position relative to the support body 51 in the reverse direction of the predetermined direction F1. In the process of the inertial body 52 sliding relative to the support body 51, electromagnetic induction is formed between the first magnet 551 and the induction member 552, so that the kinetic energy of the inertial body 52 and the support body 51 is converted into other forms of energy, reducing the relative speed between the inertial body 52 and the support body 51, thereby generating a damping effect on the vibration of the tower 20 or the nacelle 30. Under the mechanical coupling of the elastic member 53, there is a reset elastic force between the support body 51 and the inertial body 52. When the electromagnetic drive unit 54 is in the disabled state, the reset elastic force can suppress the vibration amplitude of the support body 51, and suppress one of the vibration phenomena of the structural vibration and the forced vibration. When the electromagnetic drive unit 54 is in the enabled state, since the electromagnetic drive unit 54 forms a magnetic coupling with the inertial body 52, the driving magnetic force generated by the electromagnetic drive unit 54 on the inertial body 52 can increase the displacement amplitude of the inertial body 52 relative to the equilibrium position, so that a larger reset elastic force is formed between the inertial body 52 and the support body 51, and the bandwidth of the vibration reduction frequency is widened, and a certain suppression effect is produced on both the structural vibration and the forced vibration. Therefore, the external active and passive tuned mass damping device 50 can suppress both the structural vibration and the forced vibration, thereby helping the wind power generation equipment 100 to maintain stable operation under different conditions. Since the external active and passive tuned mass damping device 50 achieves a balance between daily energy saving and vibration reduction requirements, it can increase the operating time of the wind power generation equipment 100 to a certain extent and improve the operating efficiency of the wind power generation equipment 100.

[0037] During the design stage of the external active and passive tuned mass damping device 50, the specification parameters or coupling degree of the support body 51, the inertial body 52, the elastic member 53, the electromagnetic drive unit 54 or the eddy current damping component 55 are designed according to the suppression requirements of the structural vibration or the forced vibration, so that when the electromagnetic drive unit 54 is in the disabled state, the suppression effect of the external active and passive tuned mass damping device 50 can correspond to one of the structural vibration and the forced vibration, and when the electromagnetic drive unit 54 is in the enabled state, the suppression 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, the structural vibration can be understood as the vibration corresponding to the first-order frequency of the tower 20. More specifically, the vibration corresponding to the first-order frequency refers to the vibration mode corresponding to the natural frequency when the tower 20 is freely vibrating. More specifically, the vibration mainly with the first-order frequency mainly occurs when the wind power generation equipment 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 power generation equipment 100 is in operation. More specifically, "3P" means that when the wind rotor 40 rotates one circle, the excitation frequency generated by the three blades 42 on the tower 20 is three times the 1P frequency. The "P" here represents the rotation frequency of the wind rotor 40, that is, a periodic excitation generated every time the wind rotor 40 rotates one circle. 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 weaker 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, and the 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, thereby 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 arranged outside the nacelle 30, thereby avoiding occupying the internal space of the nacelle 30, and being able to arrange an inertial body 52 with greater inertia outside the nacelle 30, and being conducive to increasing the upper limit of the travel space of the inertial body 52, and being able to more effectively suppress structural vibration. Optionally, the 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, so as to avoid interference with the sliding of the inertial body 52. ​​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. Further, 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 , so that the wind power generation equipment 100 has a simple structure and is easy to maintain, which is beneficial to reducing the cost of the wind power generation equipment 100 .

[0046] In some embodiments, in combination 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 substantially parallel to the predetermined direction F1. Further, the extension length of a single sensing member 552 may 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 the side of the inertial body 52.

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

[0048] In some other embodiments, a plurality of first magnets 551 are positioned relative to the support body 51, the induction member 552 is connected to the inertial body 52, and the plurality of first magnets 551 are distributed along the predetermined direction F1. Optionally, the first magnets 551 and the support body 51 are respectively connected to the cabin 30. Optionally, the first magnets 551 are connected to the support body 51. Specifically, one side of the inertial body 52 is close to the first magnet 551, and the induction member 552 is connected to the side of the inertial body 52.

[0049] In some embodiments, in combination Figure 4 and Figure 5As shown, the inertial body 52 is connected to a plurality of first magnets 551 on one side close to the inductive element 552. The polarities of two first magnets 551 adjacent to each other along the predetermined direction F1 are oppositely arranged. 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 intervals between any two first magnets 551 adjacent to each other along the predetermined direction F1 are substantially the same, so that a uniform magnetic field can be generated.

[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 a 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 heat the conductor layer, thereby consuming 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 interval 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 the vibration characteristic test results of the main structures such as the tower 20 and the nacelle 30 .

[0052] Further, the induction element 552 also has a connection layer connected to the conductor layer. The conductor layer is arranged on a side of the connection layer close to the first magnet 551. The connection layer is connected between the conductor layer and the outer side of the cabin 30. More specifically, the connection layer is connected to the outer side of the bottom of the cabin 30. Optionally, the conductor layer is made of copper to improve conductivity. Optionally, the connection layer can 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 the entirety or a portion of the inductive element 552 .

[0055] In some embodiments, in combination 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 active 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, the stator winding passes current 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, and 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 understandable that when the direction of the driving magnetic force is substantially the same as the direction of movement of the inertial body 52, the deviation amplitude of the inertial body 52 relative to the equilibrium position can be increased. It is understandable that by periodically adjusting the direction of the current passing through the stator winding, the driving magnetic force can be periodically changed, thereby enabling the inertial body 52 to maintain a larger deviation amplitude.

[0059] Optionally, the bottom plate is provided with a receiving groove. The stator winding is laid in the receiving groove. Optionally, the stator winding adopts a three-phase structure. Specifically, the three-phase windings in the stator winding are arranged in sequence along a linear line, and the front and rear windings are staggered by a certain distance, which is smaller than the size of the single winding along the distribution direction.

[0060] In some embodiments, the external active and passive tuned mass damping device 50 also includes a vibration detection component and a control unit. The vibration detection component 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 detection component 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 detection component can be selected according to specific anti-vibration requirements and monitoring needs. Optionally, the vibration detection component is a vibration sensor. Optionally, the vibration detection component is an acceleration sensor.

[0061] Optionally, the control unit is integrated inside the nacelle 30. The control unit can adjust the magnitude of the current passing through the stator winding, thereby changing the magnitude of the driving magnetic force on the inertial body 52, so as to control the offset amplitude of the inertial body 52, so that the offset amplitude corresponds 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 driving magnetic force magnitude requirement between the electromagnetic drive unit 54 and the inertial body 52 based on the vibration detection signal. It can be understood that the greater the vibration of the tower 20, the greater the current passed by the control unit 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 two opposite ends 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 of the supporting surfaces, 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 support surfaces facing each other. One elastic member 53 is supported between one side of the inertial body 52 and one support surface, and the other elastic member 53 is supported between the other side of the inertial body 52 and the other support surface.

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

[0067] In some embodiments, in combination 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 a 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 512 is connected to the support body 51 and faces the inertial body 52 along the predetermined direction F1. Specifically, the buffer 512 is positioned relative to the support body 51. A portion of the inner surface of the support body 51 is arranged opposite to the inertial body 52 along the predetermined direction F1, and the buffer 512 covers the inner surface. More specifically, the inertial body 52 is slidably arranged between the two buffers 512 along the predetermined direction F1. Optionally, the elastic member 53 can be abutted between the buffer 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 with the buffer 512.

[0070] In some embodiments, in combination Figure 4 and Figure 5 As shown, the external active and passive tuned mass damping device 50 also includes a guide rod 511 connected to the support body 51. The guide rod 511 is inserted into the inertial body 52. ​​Specifically, the guide rod 511 is parallel to the predetermined direction F1, so as to guide the inertial body 52 to slide relative to the support along the predetermined direction F1. Specifically, the two ends of the guide rod 511 are respectively positioned and connected to the support body 51. Further, the two 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 inertia body 52. ​​Furthermore, the guide rod 511 is inserted into the elastic member 53, the inertia 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 slidably 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 the 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 of the current in each winding in the stator winding changes, the stator winding can generate a moving and changing magnetic field, more specifically, the strong magnetic region in the magnetic field moves and changes relative to the stator winding. After the second magnet is coupled with the 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 in the magnetic field.

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

[0078] In some embodiments, the angle between the predetermined direction F1 and the predetermined axis L1 is not greater than 10°, so that the predetermined direction F1 is substantially perpendicular to the rotation plane of the blade 42, so that the external active and passive tuned mass damping device 50 can suppress both the vibration corresponding to the first-order frequency and the vibration corresponding to the 3P frequency, which helps to improve the vibration suppression effect under different states. Further, the predetermined direction F1 is arranged 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 damping device, which is applied to the external active and passive tuned mass damping 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, and 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 outer side of the cabin 30.

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

[0085] The above implementation modes are merely descriptions of the preferred implementation modes of the present application, and are not intended to 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 the field shall fall within the protection scope 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 a balanced position relative to the support body; an elastic member, mechanically coupled between the inertial body and the supporting body, and applying a restoring elastic force pointing to 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 The eddy current damping component comprises 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.

2. The external active and passive tuned mass damping device according to claim 1, characterized in that: It also includes a vibration detection component and a control unit; the vibration detection component 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 component 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.

3. 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.

4. The external active and passive tuned mass damping device according to claim 1, characterized in that: The inertial body comprises 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.

5. The external active and passive tuned mass damping device according to claim 1, characterized in that: It also 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.

6. The external active and passive tuned mass damping device according to claim 1, characterized in that: The inertial body is connected to a plurality of the first magnets on one side close to the inductive element; two adjacent first magnets along the predetermined direction are arranged with opposite polarities.

7. 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 as described in any one of claims 1 to 6 comprises the following steps: the support body is connected to the bottom side of the cabin; the support body at least encloses an inner cavity with the cabin, and the inertial body is slidably accommodated in the inner cavity.

8. The installation method of the external active and passive tuned mass damping device according to claim 7 is characterized in that: The angle between the predetermined direction and the predetermined axis is no greater than 10°.

9. The installation method of the external active and passive tuned mass damping device according to claim 8, characterized in that: The predetermined direction is arranged parallel to the predetermined axis line.

10. The installation method of the external active and passive tuned mass damping device according to claim 7, characterized in that: The induction element 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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