Floating wind turbine foundation, wind turbine generator and control method

Abstract

The application relates to a floating type fan foundation, a wind turbine generator unit and a control method. The floating type fan foundation comprises a floating assembly, a plurality of floating bodies and a connecting body. The plurality of floating bodies are distributed at intervals and the center lines of the floating bodies form a polygon. Two adjacent floating bodies are connected through the connecting body. One of the plurality of floating bodies is used for being connected with a tower. A vibration suppression system comprises a vibration suppression device, a first collector and a controller. At least two floating bodies of the plurality of floating bodies are connected with the vibration suppression device. The first collector is configured to acquire floating body vibration acceleration of the floating assembly. The controller is configured to control a driving part of each vibration suppression device on the floating assembly to drive a rotating disc to rotate to a predetermined rotating speed according to the floating body vibration acceleration. The floating type fan foundation has a vibration suppression function, the vibration suppression effect is good, the stability of the wind turbine generator unit can be ensured, and the power generation benefit is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wind power technology, in particular to a floating wind turbine foundation, a wind turbine generator unit and a control method. BACKGROUND

[0002] The floating wind turbine generator unit is greatly different from the land unit and the single-pile fixed foundation on the sea. From the aspect of external load, it will face wind load, wave load, ocean current load and ice load. From the aspect of whole machine dynamics, due to the floating characteristics of the floating wind turbine generator unit, the floating wind turbine generator unit has six degrees of freedom in all directions, including longitudinal, transverse and vertical translation and rolling, pitching and yawing rotation.

[0003] Under the coupling effect of the randomness of external load and the complexity of the motion of the unit itself, the linearity of the floating wind turbine generator unit is more complex. The stability of the floating wind turbine foundation for bearing the wind turbine body directly affects the aerodynamic inflow angle of the blade of the wind turbine body and is directly related to the power generation of the unit. Therefore, how to ensure the stability of the floating wind turbine generator unit is one of the problems to be solved in the field of wind power. SUMMARY

[0004] The embodiments of the present application provide a floating wind turbine foundation, a wind turbine generator unit and a control method. The floating wind turbine foundation itself has a good vibration suppression effect, can ensure the stability of the wind turbine generator unit and improve the power generation benefit.

[0005] In one aspect, the embodiments of the present application provide a floating wind turbine foundation for supporting a tower. The floating wind turbine foundation comprises: a floating assembly comprising a plurality of floating bodies and a connecting body, the plurality of floating bodies are distributed at intervals and the center lines of the floating bodies form a polygon, the connecting body connects adjacent two floating bodies, and one of the plurality of floating bodies is used to connect with the tower; a vibration suppression system comprising a vibration suppression device, a first collector and a controller, at least two of the plurality of floating bodies are connected with the vibration suppression device; the vibration suppression device comprises a base, a mounting frame, a rotating disc and a driving part, the driving part is connected to the mounting frame and can drive the rotating disc to rotate relative to the mounting frame with a first axis as the rotation center, the mounting frame is rotationally connected with the base and can rotate relative to the base with a second axis as the rotation center, and the first axis and the second axis are arranged to intersect; the first collector is configured to obtain the floating body vibration acceleration of the floating assembly; and the controller is configured to control the driving part of each vibration suppression device on the floating assembly to drive the rotating disc to rotate to a predetermined rotating speed according to the floating body vibration acceleration.

[0006] According to an aspect of the embodiments of the present application, the number of floating bodies is three and the line connecting the centers of the three floating bodies forms a triangle, one floating body is connected to the tower, and the other two floating bodies are each connected with a vibration suppression device, the second axes of the two vibration suppression devices are intersected, and the controller is configured to control the driving part of at least one vibration suppression device on the floating assembly to drive the rotating disc to rotate to a predetermined rotating speed according to the floating body vibration acceleration.

[0007] According to an aspect of the embodiments of the present application, the second axis of one of the two vibration suppression devices extends along a first direction and the second axis of the other vibration suppression device extends along a second direction, the first direction is perpendicular to the second direction, the floating body vibration acceleration includes a first direction rotating acceleration around the first direction and a second direction rotating acceleration around the second direction; the controller is configured to:

[0008] when the first direction rotating acceleration corresponding first order spectrum data is less than or equal to m, the rotating disc of the vibration suppression device with the second axis extending along the first direction is controlled to be stationary, and the rotating disc of the vibration suppression device with the second axis extending along the second direction is controlled to rotate in a first rotating speed range;

[0009] when the first direction rotating acceleration corresponding first order spectrum data is greater than m and less than or equal to L, the rotating disc of the vibration suppression device with the second axis extending along the first direction is controlled to be stationary, and the rotating disc of the vibration suppression device with the second axis extending along the second direction is controlled to rotate in a second rotating speed range, the minimum value of the second rotating speed range is greater than the maximum value of the first rotating speed range.

[0010] According to an aspect of the embodiments of the present application, the controller is further configured to:

[0011] when the second direction rotating acceleration corresponding first order spectrum data is less than or equal to m, the rotating disc of the vibration suppression device with the second axis extending along the second direction is controlled to be stationary, and the rotating disc of the vibration suppression device with the second axis extending along the first direction is controlled to rotate in a first rotating speed range;

[0012] when the second direction rotating acceleration corresponding first order spectrum data is greater than m and less than or equal to L, the rotating disc of the vibration suppression device with the second axis extending along the second direction is controlled to be stationary, and the rotating disc of the vibration suppression device with the second axis extending along the first direction is controlled to rotate in a second rotating speed range.

[0013] According to an aspect of the embodiments of the present application, the second axes of the two vibration suppression devices converge at the center of the floating assembly, the floating body vibration acceleration includes a first direction rotating acceleration around the first direction and a second direction rotating acceleration around the second direction, the first direction and the second direction are perpendicular to each other and intersect with the second axes of the vibration suppression devices respectively, and the controller is configured to:

[0014] When at least one of the first direction rotational acceleration corresponding first order spectrum data and the second direction rotational acceleration corresponding first order spectrum data is less than or equal to m, the rotating disc of each vibration damping device is controlled to rotate in a first rotational speed range;

[0015] When at least one of the first direction rotational acceleration corresponding first order spectrum data and the second direction rotational acceleration corresponding first order spectrum data is greater than m and less than or equal to n, the rotating disc of each vibration damping device is controlled to rotate in a second rotational speed range, the minimum value of the second rotational speed range being greater than the maximum value of the first rotational speed range.

[0016] According to an aspect of the embodiment of the present application, the vibration damping device is an axisymmetric structure relative to the first axis of the vibration damping device, and the center of the floating body is located on the first axis.

[0017] According to an aspect of the embodiment of the present application, the rotating disc is in a disc shape and is made of a metal material, the output end of the driving component is connected with an output shaft, and the driving component is located outside the mounting frame and is connected with the rotating disc through the output shaft to drive the rotating disc to rotate.

[0018] According to an aspect of the embodiment of the present application, the mounting frame has a hollow cavity, the rotating disc is located in the hollow cavity and is connected with the driving component, and the hollow cavity is in a vacuum state.

[0019] In another aspect, the embodiment of the present application provides a wind turbine generator, comprising:

[0020] The floating wind turbine foundation described above;

[0021] The wind turbine body comprises a tower and a nacelle arranged on the tower, and the tower is connected to one of the plurality of floating bodies of the floating wind turbine foundation.

[0022] According to another aspect of the embodiment of the present application, at least one of the tower and the nacelle is provided with a vibration damping device, the vibration damping system further comprises a second collector configured to collect the nacelle vibration acceleration of the nacelle, and the controller is further configured to control the driving component of each vibration damping device of the wind turbine body to drive the rotating disc to rotate to a predetermined speed according to the nacelle vibration acceleration.

[0023] In yet another aspect, the embodiment of the present application provides a control method of a wind turbine generator, comprising the following steps:

[0024] The wind turbine generator described above is configured;

[0025] The floating body vibration acceleration of the floating assembly and the nacelle vibration acceleration of the nacelle are obtained respectively;

[0026] The rotational speed of each vibration damping device is configured according to the floating body vibration acceleration and the nacelle vibration acceleration.

[0027] According to still another aspect of the embodiments of the present application, before the step of configuring the rotating speed of each vibration suppression device according to the floating body vibration acceleration and the cabin vibration acceleration, the control method further comprises:

[0028] According to the floating body vibration acceleration and the cabin vibration acceleration, first order spectrum data of the cabin in the first direction, first order spectrum data of the cabin in the second direction, first order spectrum data of the floating assembly in the first direction, and first order spectrum data of the floating assembly in the second direction are determined respectively.

[0029] According to still another aspect of the embodiments of the present application, when the second axis of one of the two vibration suppression devices extends in the first direction and the second axis of the other extends in the second direction, the first direction is perpendicular to the second direction, and the step of configuring the rotating speed of the vibration suppression device according to the cabin acceleration and the floating body acceleration comprises:

[0030] When the first direction rotational acceleration corresponding first order spectrum data is less than or equal to m, the rotating disc of the vibration suppression device with the second axis extending in the first direction is controlled to be stationary, and the rotating disc of the vibration suppression device with the second axis extending in the second direction is controlled to rotate in the first rotating speed range;

[0031] When the first direction rotational acceleration corresponding first order spectrum data is greater than m and less than or equal to L, the rotating disc of the vibration suppression device with the second axis extending in the first direction is controlled to be stationary, and the rotating disc of the vibration suppression device with the second axis extending in the second direction is controlled to rotate in the second rotating speed range, the minimum value of the second rotating speed range is greater than the maximum value of the first rotating speed range.

[0032] According to still another aspect of the embodiments of the present application, when the second axis of the two vibration suppression devices converges at the center of the floating assembly, the first direction and the second direction are perpendicular to each other and intersect with the second axis of each vibration suppression device respectively, and the step of configuring the rotating speed of the vibration suppression device according to the cabin acceleration and the floating body acceleration comprises: when at least one of the first direction rotational acceleration and the second direction rotational acceleration is less than or equal to m, the rotating disc of each vibration suppression device is controlled to rotate in the first rotating speed range;

[0033] When at least one of the first direction rotational acceleration corresponding first order spectrum data and the second direction rotational acceleration corresponding first order spectrum data is greater than m and less than or equal to n, the rotating disc of each vibration suppression device is controlled to rotate in the second rotating speed range, the minimum value of the second rotating speed range is greater than the maximum value of the first rotating speed range.

[0034] According to still another aspect of the embodiments of the present application, the step of configuring the rotating speed of the vibration suppression device according to the cabin acceleration and the floating body acceleration further comprises

[0035] When the first-order spectrum data of the nacelle in the first direction and the first-order spectrum data of the nacelle in the second direction are both less than or equal to the value w, the driving part of each vibration suppression device on the fan body is controlled to stop, so that the rotating speed of each rotating disc relative to the mounting frame is 0;

[0036] When at least one of the first-order spectrum data of the nacelle in the first direction and the first-order spectrum data of the nacelle in the second direction is greater than w and less than or equal to p, the driving part of at least one vibration suppression device on the fan body is controlled to drive the rotating disc to rotate at a third rotating speed;

[0037] When at least one of the first-order spectrum data of the nacelle in the first direction and the first-order spectrum data of the nacelle in the second direction is greater than p, the driving part of at least one vibration suppression device on the fan body is controlled to drive the rotating disc to rotate at a fourth rotating speed, and the fourth rotating speed is greater than the third rotating speed.

[0038] According to the floating type fan foundation, the wind turbine generator and the control method provided in the embodiments of the present application, the floating type fan foundation comprises a floating assembly and a vibration suppression system. The floating assembly comprises a plurality of floating bodies and a connecting body for connecting adjacent two floating bodies. The plurality of floating bodies are arranged to float on the sea. Since the center connecting lines of the floating bodies are in polygonal shape, and one of the floating bodies is used to be connected with the tower, the support requirement for the tower can be reliably ensured.

[0039] Meanwhile, the vibration suppression system comprises a vibration suppression device, a first collector and a controller. When the floating type fan foundation and the structure supported thereby vibrate, the floating body vibration acceleration of the floating assembly can be acquired by the first collector. Since the vibration suppression device comprises a base, a mounting frame, a rotating disc and a driving part, the rotating disc can rotate at a high speed relative to the mounting frame with the first axis as the rotating center under the driving of the driving part. Meanwhile, the mounting frame is rotationally connected with the base and can rotate relative to the base with the second axis intersecting with the first axis as the rotating center. The controller can control the driving part to drive the rotating disc to rotate to a predetermined rotating speed according to the floating body vibration acceleration acquired by the collector. Since the rotating disc has a certain mass, when the rotating disc is driven by the driving part to rotate at a high speed, the rotating disc has a large moment of inertia for the rotating shaft extending along the first axis, and the inertia space remains stable and unchanged and points to a fixed direction. When external disturbance exists, since the rotating disc has precession, an action moment perpendicular to the external moment is generated, so that the stability of the rotating shaft extending along the first axis in the inertia space is maintained, and the vibration of the structure is suppressed, so that the safety performance of the floating type fan foundation and the wind turbine generator applied thereby is ensured. Moreover, the first collector and the controller are arranged, so that the automatic control of the floating type fan foundation can be realized, and the response speed of the floating type fan foundation in the vibration suppression work is improved. BRIEF DESCRIPTION OF DRAWINGS

[0040] The features, advantages, and technical effects of the exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0041] Figure 1 is a structural schematic diagram of a wind turbine generator set according to an embodiment of the present application;

[0042] Figure 2 is a structural schematic diagram of a floating wind turbine foundation according to an embodiment of the present application;

[0043] Figure 3 is a structural schematic diagram of a vibration suppression device according to an embodiment of the present application;

[0044] Figure 4 is a side view of a vibration suppression device according to an embodiment of the present application;

[0045] Figure 5 is a control logic diagram of a wind turbine generator set according to an embodiment of the present application;

[0046] Figure 6 is a structural schematic diagram of a floating wind turbine foundation according to another embodiment of the present application;

[0047] Figure 7 is a control logic diagram of a wind turbine generator set according to another embodiment of the present application;

[0048] Figure 8 is a structural schematic diagram of a wind turbine body according to another embodiment of the present application;

[0049] Figure 9 is a structural schematic diagram of a wind turbine body according to yet another embodiment of the present application;

[0050] Figure 10 is a flow chart of a control method according to an embodiment of the present application.

[0051] 100 - wind turbine body; 10 - tower; 20 - nacelle; 30 - generator; 40 - impeller; 41 - hub; 42 - blade; 50 - mooring system; 60 - seabed;

[0052] 200 - vibration suppression system; 210 - vibration suppression device; 211 - base; 211a - bottom wall; 211b - side wall; 211c - cavity; 212 - mounting frame; 212a - hollow cavity; 213 - rotating disc; 214 - driving component; 215 - output shaft; 216 - connecting shaft; 220 - controller;

[0053] 300 - floating assembly; 310 - floating body; 320 - connecting body;

[0054] X - first direction; Y - second direction; aa - first axis; bb - second axis.

[0055] In the drawings, the same components have the same reference numerals. The drawings are not drawn to scale. DETAILED DESCRIPTION

[0056] Features and exemplary embodiments of various aspects of the present application will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one of ordinary skill in the art that the present application can be practiced without some of these specific details. The description of the embodiments is merely intended to provide a better understanding of the present application by showing examples of the present application. In the drawings and the following description, well-known structures and techniques are not shown in order to avoid unnecessary obscurity of the present application; and, for clarity, the dimensions of some structures can be exaggerated. Furthermore, features, structures or characteristics described below can be combined in any suitable manner in one or more embodiments.

[0057] As Figure 1 shown, the embodiments of the present application provide a wind turbine generator set, including a floating wind turbine foundation and a wind turbine body. The wind turbine body 100 includes a tower 10, a nacelle 20, a generator 30 and a rotor 40. The tower 10 is connected to the floating wind turbine foundation, the nacelle 20 is arranged at the top end of the tower 10, and the generator 30 is arranged in the nacelle 20. In some examples, the generator 30 can be located outside the nacelle 20, and of course, in some examples, the generator 30 can also be located inside the nacelle 20. The rotor 40 includes a hub 41 and a plurality of blades 42 connected to the hub 41. The rotor 40 is connected to the rotor of the generator through the hub 41, thereby driving the rotor to rotate relative to the stator to achieve the power generation requirement of the wind turbine generator set. The floating wind turbine foundation floats in seawater, and in order to limit its movement range, it is fixed to the seabed 60 through a mooring system 50 to achieve the constraint of a certain movement range.

[0058] Since the stability of the floating wind turbine foundation directly affects the aerodynamic inflow angle of the blades of the wind turbine body and is directly related to the power generation of the unit, how to ensure the stability of the floating wind turbine generator set is one of the problems to be solved in the wind power field.

[0059] The existing floating wind turbine foundation mainly adjusts the water level in the cabin of different floating bodies through a power water pump, thereby adjusting the center position of the entire machine to achieve stability adjustment. This technical means has some shortcomings, for example, the system response speed is slow due to the huge adjustment water demand, and the large-flow ballast water adjustment system has a high cost.

[0060] Based on this, the embodiments of the present application also provide a new floating wind turbine foundation, which has a good vibration suppression function, can ensure the stability of the wind turbine generator set, and improve the power generation benefit.

[0061] As Figures 1 to 4As shown, the floating type fan foundation provided by the embodiments of the present application comprises a floating assembly 300 and a vibration suppression system 200. The floating assembly 300 comprises a plurality of floating bodies 310 and connecting bodies 320. The plurality of floating bodies 310 are distributed at intervals and the center lines of the floating bodies 310 form a polygon. The adjacent two floating bodies 310 are connected by the connecting bodies 320. One of the plurality of floating bodies 310 is used to connect with the tower 10. The vibration suppression system 200 comprises vibration suppression devices 210, first collectors and a controller 220. At least two of the plurality of floating bodies 310 are connected with the vibration suppression devices 210.

[0062] The vibration suppression device 210 comprises a base 211, a mounting frame 212, a rotating disc 213 and a driving component 214. The driving component 214 is connected to the mounting frame 212 and can drive the rotating disc 213 to rotate relative to the mounting frame 212 with the first axis aa as the rotation center. The mounting frame 212 is rotationally connected with the base 211 and can rotate relative to the base 211 with the second axis bb as the rotation center. The first axis aa and the second axis bb are intersected. The first collector is configured to acquire the floating body vibration acceleration of the floating assembly 300. The controller 220 is configured to control the driving component 214 of each vibration suppression device 210 on the floating assembly 300 to drive the rotating disc 213 to rotate to a predetermined rotating speed according to the floating body vibration acceleration.

[0063] The number of the floating bodies 310 comprised by the floating assembly 300 can be three, four or even more. The polygon formed by the center lines of the plurality of floating bodies 310 can be a polygon, such as a triangle or a quadrilateral. The floating body 310 can adopt a hollow or solid cylindrical structure or a prism structure. When the prism structure is adopted, the prism structure can be a polygonal prism structure.

[0064] The number of the vibration suppression devices 210 comprised by the vibration suppression system 200 can be two or more. When the number is two or more, the two or more vibration suppression devices 210 can be arranged at intervals. The second axes bb of the two or more vibration suppression devices 210 can be intersected. The vibration suppression device 210 can be connected to the floating body 310 of the floating assembly 300.

[0065] The connecting body 320 can adopt a rod-shaped or plate-shaped structure and is used to connect the adjacent two floating bodies 310 and then connect the plurality of floating bodies 310 as a whole.

[0066] The included angle between the first axis aa and the second axis bb can be 90°.

[0067] The first collector and the controller 220 can be integrated on the wind turbine body 100 of the wind turbine generator set, for example, the first collector can be arranged on the nacelle 20, and the controller 220 can be arranged on the nacelle 20, of course, the controller 220 can also be arranged separately from the wind turbine body 100 in a remote control mode.

[0068] The floating wind turbine foundation provided by the embodiment of the application can reliably ensure the support requirement for the tower 10, because the center connecting line of each floating body 310 is a polygon, and one of the floating bodies 310 is used to be connected with the tower 10.

[0069] Meanwhile, the vibration suppression system 200 includes the vibration suppression device 210, the first collector and the controller 220. When the floating wind turbine foundation and the structure supported thereby vibrate, the floating body vibration acceleration of the floating assembly 300 can be obtained by the first collector. Because the vibration suppression device 210 includes the base 211, the mounting frame 212, the rotating disc 213 and the driving component 214, the rotating disc 213 can rotate at a high speed relative to the mounting frame 212 with the first axis aa as the rotation center under the driving of the driving component 214, meanwhile, the mounting frame 212 is rotationally connected with the base 211 and can rotate relative to the base 211 with the second axis bb intersecting with the first axis aa as the rotation center, the controller 220 can control the driving component 214 to drive the rotating disc 213 to rotate at a predetermined rotating speed according to the floating body vibration acceleration obtained by the first collector. Because the rotating disc 213 has a certain mass, when it is driven to rotate at a high speed by the driving component 214, it has a large rotational inertia to the rotating shaft extending along the first axis aa, the first axis aa remains stable and unchanged in the inertial space and points to a fixed direction. When there is an external disturbance, because of the precession, an action moment perpendicular to the external moment is generated, thereby keeping the rotating shaft extending along the first axis aa stable in the inertial space and suppressing the vibration of the structure, and ensuring the safety performance of the floating wind turbine foundation and the wind turbine generator set applied thereby. The arrangement of the first collector and the controller 220 can realize the automatic control of the floating wind turbine foundation, without the need to use a driving pump to inject seawater, improve the response speed of the floating wind turbine foundation in the vibration suppression work, and without the need for a large-flow ballast water regulation system, and the cost is low.

[0070] Continuing to refer to Figure 3 and Figure 4 In some optional embodiments, the base 211 of the vibration suppression device 210 of the floating wind turbine foundation includes the bottom wall 211a and the side wall 211b connected to the bottom wall 211a, the bottom wall 211a and the side wall 211b together form the recess cavity 211c, and the mounting frame 212 at least partially extends into the recess cavity 211c and is rotationally connected with the side wall 211b through the rotating shaft.

[0071] The concave cavity 211c of the base 211 can adopt a U-shaped structure with one side open. The bottom wall 211a and the side wall 211b of the base 211 can both adopt a regular plate-shaped structure. Exemplarily, the bottom wall 211a and the side wall 211b of the base 211 can both adopt a plate-shaped structure, and the bottom wall 211a is vertically connected with the side wall 211b on both sides in the extension direction of the second axis bb. The two side walls 211b are symmetrically distributed relative to the first axis aa.

[0072] The base 211 of the vibration suppression device 210 provided by the embodiment of the present application adopts the form of the concave cavity 211c enclosed by the bottom wall 211a and the side wall 211b, which is simple in structure, and the bottom wall 211a is beneficial to contact with the fan body 100, thereby ensuring the stability on the fan body 100. Meanwhile, the concave cavity 211c is beneficial to the extension of the mounting frame 212 and the rotational connection between the mounting frame 212 and the base 211, and makes the vibration suppression device 210 compact in structure, reduces the occupied volume, and further reduces or avoids the limitation of the installation space of the fan body 100 on the vibration suppression device 210.

[0073] As some optional embodiments, the mounting frame 212 can adopt a hollow disc-shaped structure with a circular disc or a polygonal shape, and when a polygonal shape is adopted, a regular polygonal shape can be selected. The mounting frame 212 can be provided with a connecting shaft 216 extending along the second axis bb, and the mounting frame 212 is rotationally connected with the base 211 through the connecting shaft 216 and rotates relative to the base 211 with the second axis bb as the rotation center. Optionally, the mounting frame 212 is rotationally connected with the two side walls 211b through the connecting shaft 216. A gap is formed between the mounting frame 212 and the base 211, which avoids the frictional interference phenomenon between the mounting frame 212 and the base 211 during the rotation of the mounting frame 212 relative to the base 211.

[0074] In some optional embodiments, the mounting frame 212 has a hollow cavity 212a, the rotating disc 213 is located in the hollow cavity 212a and connected with the driving component 214, and the hollow cavity 212a is in a vacuum state. Through the above arrangement, the rotating disc 213 can be protected by the mounting frame 212. Moreover, when the rotating disc 213 rotates in the mounting frame 212, the frictional energy consumption of the rotating disc 213 during high-speed rotation in the middle cavity of the mounting frame 212 can be reduced.

[0075] In some optional embodiments, the rotating disc 213 is in a disc shape, the output end of the driving component 214 is connected with an output shaft 215, and the driving component 214 is located outside the mounting frame 212 and connected with the center of the rotating disc 213 through the output shaft 215 to drive the rotating disc 213 to rotate. The rotating disc 213 adopts the above structure, which is regular in shape and good in vibration suppression effect, and the output shaft 215 can be understood as the rotating shaft mentioned above.

[0076] As some optional embodiments, the mounting frame 212 can adopt a hollow disc structure. Optionally, the rotating disc 213 can be coaxially arranged with the mounting frame 212, the output shaft 215 extends into the center of the mounting frame 212 and is connected with the rotating disc 213, and the driving component 214 can be located at the center of the mounting frame 212 and drive the rotating disc 213 to rotate. Through the above arrangement, the vibration suppression device 210 can be balanced in the non-vibration state of the wind turbine generator set, and can quickly respond when vibration occurs, thereby ensuring the vibration suppression requirement.

[0077] In some optional embodiments, the rotating disc 213 can adopt a rigid body structure with uniform mass distribution and axial symmetry, and can be made of metal material, thereby having good vibration suppression effect.

[0078] Optionally, the output shaft 215 can be inserted into the rotating disc 213 at both ends in the extension direction of the output shaft 215 and rotationally matched with the rotating disc 213, and the output shaft 215 is arranged by being supported by the rotating disc 213.

[0079] In some optional embodiments, the vibration suppression device 210 is an axial symmetric structure relative to the first axis aa. Through the above arrangement, when external disturbance exists, the precession is generated due to the existence of the precession, and the action torque perpendicular to the external torque is better generated, thereby effectively suppressing the vibration of the structure.

[0080] In some optional embodiments, the driving component 214 can adopt a structure such as a motor, which can drive the rotating disc 213 to rotate at high speed, thereby optimizing the vibration suppression effect.

[0081] In some optional embodiments, an electric control cabinet can be arranged in the nacelle 20 or the tower 10, and at least one of the vibration suppression device 210, the collector and the controller 220 is electrically connected with the electric control cabinet.

[0082] By arranging the electric control cabinet in the nacelle 20, the power demand of the vibration suppression device 210 and the collector and the like can be ensured. In some optional embodiments, the controller 220 can be integrated in the electric control cabinet, which can not only be protected by the cabinet body, but also improve the compactness and facilitate the control of the vibration suppression device 210.

[0083] Continuing to refer to Figures 2 to 4 In some optional embodiments, the floating wind turbine foundation provided by the embodiments of the present application has three floating bodies 310, and the center lines of the three floating bodies 310 form a triangle, which can be an equilateral triangle. One of the floating bodies 310 is connected with the tower 10, and the remaining two floating bodies 310 are each connected with a vibration suppression device 210. The second axes bb of the two vibration suppression devices 210 intersect with each other, and the controller 220 is configured to control the driving component 214 of at least one vibration suppression device 210 on the floating assembly 300 to drive the rotating disc 213 to rotate to a predetermined rotating speed according to the vibration acceleration of the floating body.

[0084] The included angle between the second axes bb of the vibration suppression devices 210 connected on the two floating bodies 310 can be 80°-130°. Alternatively, it can be 90° or 120°.

[0085] When the floating wind turbine foundation vibrates, the controller 220 can control the driving components 214 of the vibration suppression devices 210 on the floating assembly 300 to drive the rotating discs 213 to rotate to a predetermined rotating speed according to the floating body vibration acceleration. Of course, the driving components 214 of the two vibration suppression devices 210 can also be synchronously controlled to drive the rotating discs 213 to rotate to the predetermined speed respectively.

[0086] The floating wind turbine foundation provided by the embodiment of the present application can form a stable support surface by using three floating bodies 310 to support together, and the number of floating bodies 310 can be reduced as much as possible, which is beneficial to reduce the production cost and construction cost of the floating contact.

[0087] Meanwhile, the vibration suppression devices 210 are arranged on the two floating bodies 310 which are not connected with the tower 10, and the second axes bb of the two vibration suppression devices 210 are intersected, so that the controller 220 can control the corresponding vibration suppression devices 210 according to the vibration direction or amplitude of the floating body vibration acceleration and other parameters, thereby improving the self-vibration suppression capability of the floating wind turbine foundation and reducing the probability that the vibration of the floating wind turbine foundation affects the power generation efficiency of the wind turbine generator.

[0088] Continuing to refer to Figures 2 to 5 In some alternative embodiments, the second axes bb of one of the two vibration suppression devices 210 extend along a first direction X and the second axes bb of the other extend along a second direction Y, the first direction X is perpendicular to the second direction Y, the floating body vibration acceleration includes a first direction rotating acceleration around the first direction X and a second direction rotating acceleration around the second direction Y, the first direction X can be understood as an a direction, and the second direction Y can be understood as a β direction. The controller 220 is configured to:

[0089] When the first direction rotating acceleration a corresponds to first-order spectrum data less than or equal to m, the rotating disc 213 of the vibration suppression device 210 whose second axis bb extends along the first direction X is controlled to be stationary, that is, n=0, and the rotating disc 213 of the vibration suppression device 210 whose second axis bb extends along the second direction Y is controlled to rotate in a first rotating speed range, that is, 0

[0090] When the first-order spectrum data corresponding to the first direction rotation acceleration a is greater than m and less than or equal to L, the rotating disc 213 of the vibration suppression device 210 extending along the first direction X of the second axis bb is controlled to be stationary, that is, n = 0, and the rotating disc 213 of the vibration suppression device 210 extending along the second direction Y of the second axis bb is controlled to rotate in the second rotation speed range, that is, A < n ≤ B, and the minimum value of the second rotation speed range is greater than the maximum value of the first rotation speed range.

[0091] The values of m and L can be set according to the wind field environment in which the floating wind turbine foundation and the wind turbine generator set are located and the vibration limit that can be borne by the corresponding type of the set. For example, the value of m can be 0.04g, and the value of L can be 0.08g. Of course, this is an example, and in some embodiments, the value of m can be greater than or less than 0.04g, and the value of n can be greater than or less than 0.08g.

[0092] The value of A can be 20000rpm, and the value of B can be 35000rpm. For example, the value of the first rotation speed range can be 0 < n ≤ 20000rpm. For example, the value of the second rotation speed range can be 20000rpm < n ≤ 35000rpm.

[0093] The floating wind turbine foundation provided by the embodiments of the present application can realize automatic vibration suppression of the floating wind turbine foundation by extending the second axis bb of one of the two vibration suppression devices 210 in the first direction X and extending the second axis bb of the other in the second direction Y, the first direction X being perpendicular to the second direction Y, and configuring the rotation speed of the rotating disc 213 of the vibration suppression device 210 extending along the second direction Y according to the value range of the first direction X rotation acceleration, and can give corresponding modes according to different first direction X rotation accelerations, so that the vibration suppression capacity matches the vibration amplitude, avoids the phenomenon of under-suppression or over-suppression, and ensures the vibration suppression effect.

[0094] As shown in FIG. 1, Figure 5 In some optional embodiments, when the second axis bb of one of the two vibration suppression devices 210 extends in the first direction X and the second axis bb of the other extends in the second direction Y, the first direction X is perpendicular to the second direction Y, and the floating body vibration acceleration includes a first direction rotation acceleration around the first direction X and a second direction rotation acceleration around the second direction, the controller 220 is further configured to:

[0095] When the first-order spectrum data corresponding to the second direction rotation acceleration β is less than or equal to m, the rotating disc 213 of the vibration suppression device 210 extending along the second direction Y of the second axis bb is controlled to be stationary, that is, n = 0, and the rotating disc 213 of the vibration suppression device 210 extending along the first direction X of the second axis bb is controlled to rotate in the first rotation speed range, that is, 0 < n ≤ A.

[0096] When the first-order spectrum data corresponding to the rotational acceleration in the second direction Y is greater than m and less than or equal to L, the rotating disk 213 of the vibration suppression device 210 that controls the second axis bb to extend along the second direction Y is stationary, that is, n=0, and the rotating disk 213 of the vibration suppression device 210 that controls the second axis bb to extend along the first direction X is rotated within the second speed range, that is, A<n≤B.

[0097] The values ​​of m, L, the first speed range and the second speed range are the same as above and will not be repeated here.

[0098] The floating wind turbine foundation provided in the embodiment of the present application further implements automated vibration suppression of the floating wind turbine foundation by ensuring that the second axis bb of one of the two vibration suppression devices 210 extends along the first direction X and the second axis bb of the other extends along the second direction Y, with the first direction X and the second direction Y being perpendicular. Furthermore, the rotational speed of the rotating disk 213 of the vibration suppression device 210 whose second axis bb extends along the first direction X is configured according to the numerical range of the rotational acceleration in the second direction Y. Furthermore, corresponding methods can be provided according to different rotational accelerations in the second direction Y, so that the vibration suppression capability is matched with the vibration amplitude, effectively avoiding under-suppression or over-suppression, and ensuring the vibration suppression effect.

[0099] like Figure 5 As shown, in some optional embodiments, the controller 220 may include a signal processing module and a real-time response module. The signal processing module is configured to perform a Fourier transform on the time domain data of the floating body vibration acceleration to obtain spectrum data of the floating body acceleration, which may include first-order spectrum data of the first direction rotational acceleration and first-order spectrum data of the second direction rotational acceleration; the real-time response module is configured to control the driving component 214 to drive the rotating disk 213 to rotate to a predetermined speed based on the spectrum data of the floating body vibration acceleration.

[0100] The above configuration facilitates matching the rotation speed of the rotating disk 213 with the vibration information of the floating assembly 300 acquired by the first collector, thereby optimizing the vibration suppression effect.

[0101] It can be understood that the above arrangement of the extension direction of the second axis bb of the two vibration suppression devices 210 is only an optional embodiment, but is not limited to the above form.

[0102] like Figure 6 as well as Figure 7As shown in some embodiments, the second axis bb of the two vibration suppression devices 210 can also converge at the center of the floating assembly 300, the floating body vibration acceleration includes a first direction rotation acceleration around a first direction X and a second direction rotation acceleration around a second direction Y, the first direction X and the second direction Y are perpendicular to each other and intersect with the second axis bb of each vibration suppression device 210 respectively, and the controller 220 is configured to:

[0103] When at least one of the first direction rotation acceleration a corresponding first order spectrum data and the second direction rotation acceleration β corresponding first order spectrum data is less than or equal to m, the controller controls the rotation disc 213 of each vibration suppression device 210 to rotate in the first rotation speed range, that is, 0 < n ≤ A;

[0104] When at least one of the first direction rotation acceleration a corresponding first order spectrum data and the second direction rotation acceleration β corresponding first order spectrum data is greater than m and less than or equal to n, the controller controls the rotation disc 213 of each vibration suppression device 210 to rotate in the second rotation speed range, that is, A < n ≤ B, and the minimum value of the second rotation speed range is greater than the maximum value of the first rotation speed range.

[0105] The values of m, L, the first rotation speed range and the second rotation speed range are the same as above, and will not be repeated here.

[0106] The two vibration suppression devices 210 are arranged in the above manner, so that the two vibration suppression devices 210 can work synchronously under different conditions, suppress vibration together, and optimize the vibration suppression effect.

[0107] The wind turbine provided by the embodiments of the present application has good vibration suppression effect, fast response speed and low cost because it includes the floating vibration suppression device 210 provided by the above embodiments.

[0108] As shown in some embodiments, Figure 8 As shown in some embodiments, Figure 9 In some optional embodiments, the wind turbine provided by the embodiments of the present application is provided with the vibration suppression device 210 on at least one of the tower 10 and the nacelle 20, the vibration suppression system 200 further includes a second collector configured to collect nacelle vibration acceleration of the nacelle 20, and the controller 220 is further configured to control the driving component 214 of each vibration suppression device 210 on the wind turbine body 100 to drive the rotation disc 213 to rotate to a predetermined speed according to the nacelle vibration acceleration.

[0109] The wind turbine generator set provided in the embodiment of the present application is provided with a vibration suppression device 210 on at least one of the tower 10 and the nacelle 20 of the wind turbine generator set, and the vibration suppression system 200 also includes a second collector, so that the controller 220 can also control the driving components 214 of each vibration suppression device 210 of the wind turbine body 100 according to the nacelle vibration acceleration information obtained by the second collector, drive the rotating disk 213 to rotate to a predetermined speed, so that the floating wind turbine foundation and the wind turbine body 100 can synchronously suppress vibration, thereby improving the overall stability of the wind turbine generator set and ensuring its power generation efficiency.

[0110] In the wind turbine generator set provided in the embodiment of the present application, the wind turbine body 100 may be provided with two or more vibration suppression devices 210, and the two or more vibration suppression devices 210 are all provided in the nacelle 20. Of course, this is an optional embodiment. In some embodiments, at least one of the two or more vibration suppression devices 210 is located in the nacelle 20 and at least one vibration suppression device 210 is located on the top of the tower 10 near the nacelle 20.

[0111] In some other examples, more than two vibration suppression devices 210 may be located at the top of the tower 10 near the nacelle 20 , and the more than two vibration suppression devices 210 may be spaced apart along the circumference of the tower 10 and at the same height.

[0112] Continue reading Figure 5 、 Figure 7 As shown, in some optional embodiments, the signal processing module of the controller 220 may be further configured to perform Fourier transform on the time domain data of the cabin vibration acceleration to obtain spectrum data of the cabin vibration acceleration, and the spectrum data may include first-order spectrum data of the vibration acceleration in the first direction and first-order spectrum data of the vibration acceleration in the second direction; the real-time response module is further configured to control the driving component 214 of the corresponding vibration suppression device 210 on the wind turbine body 100 to drive the rotating disk 213 to rotate to a predetermined speed according to the spectrum data of the vibration acceleration of the floating cabin.

[0113] In some optional embodiments, the wind turbine generator set provided in the embodiments of the present application has its vibration acceleration spectrum data including first-order spectrum data ax of the wind turbine body 100 in the first direction X and first-order spectrum data ay in the second direction Y; the controller 220 is configured to:

[0114] When the values ​​of the first-order spectrum data ax in the first direction X and the first-order spectrum data ay in the second direction Y are both less than or equal to the value w, the driving components 214 of each vibration suppression device 210 on the fan body 100 are controlled to stop, so that the rotation speed of each rotating disk 213 relative to the mounting frame 212 is 0.

[0115] When at least one of the first-order spectrum data of the first direction X and the first-order spectrum data of the second direction Y is greater than w and less than or equal to p, the driving component 214 of the at least one vibration suppression device 210 on the fan body 100 drives the rotating disc 213 to rotate at a third rotating speed, that is, n=C.

[0116] When at least one of the first-order spectrum data of the first direction X and the first-order spectrum data of the second direction Y is greater than p, the driving component 214 of the at least one vibration suppression device 210 on the fan body 100 drives the rotating disc 213 to rotate at a fourth rotating speed, that is, n=D, and the fourth rotating speed is greater than the third rotating speed.

[0117] The values of w and p can be set according to the wind field environment where the wind turbine generator set is located and the vibration limit that can be borne by the corresponding type of the wind turbine generator set. For example, the value of w can be 0.06g, and the value of p can be 0.08g. Of course, this is only an example, and in some embodiments, the value of w can be greater than or less than 0.06g, and the value of p can be greater than or less than 0.08g.

[0118] For example, the third rotating speed can be 20000rpm, and the fourth rotating speed can be 35000rpm. It can be understood that the above is only an optional embodiment, and is not limited to the above values, which can be set according to the wind field environment where the wind turbine generator set is located and the vibration limit that can be borne by the corresponding type of the wind turbine generator set.

[0119] The wind turbine generator set provided by the embodiment of the application includes the first-order spectrum data of the fan body 100 in the first direction X and the first-order spectrum data in the second direction Y, the controller 220 is configured to the above control mode, and the driving component 214 of the vibration suppression device 210 at the corresponding position can drive the rotating disc 213 to rotate at the corresponding speed according to the first-order frequency domain values of the first direction X and the second direction Y, so as to realize the automatic vibration suppression of the wind turbine generator set, and the corresponding mode can be given according to different frequency spectrum data, so that the vibration suppression capability is matched with the vibration amplitude, the phenomenon of under-suppression or over-suppression is avoided, and the vibration suppression effect is ensured.

[0120] In some optional embodiments, when the first-order spectrum data of the first direction X is less than or equal to the value of w, the driving component 214 of each vibration suppression device 210 can be controlled to stop, so that the rotating speed of each rotating disc 213 relative to the mounting frame 212 is 0.

[0121] When the first-order spectrum data of the first direction X is greater than w and less than or equal to p, the driving component 214 of the at least one vibration suppression device 210 drives the rotating disc 213 to rotate at a third rotating speed, and the at least one vibration suppression device 210 can be the vibration suppression device 210 extending along the second direction Y of the second axis bb.

[0122] When the first-order spectrum data in the first direction X is greater than p, the driving component 214 controls at least one vibration suppression device 210 to drive the rotating disk 213 to rotate at a fourth speed, and the fourth speed is greater than the third speed. The at least one vibration suppression device 210 can be selected as a vibration suppression device 210 whose second axis bb extends along the second direction Y.

[0123] In other optional embodiments, when the first-order spectrum data value in the second direction Y is less than or equal to the value w, the driving component 214 of each vibration suppression device 210 can be controlled to stop, so that the rotation speed of each rotating disk 213 relative to the mounting frame 212 is 0.

[0124] When the first-order spectrum data in the second direction Y is greater than w and less than or equal to p, the driving component 214 controls at least one vibration suppression device 210 to drive the rotating disk 213 to rotate at a third speed. The at least one vibration suppression device 210 can be a vibration suppression device 210 whose second axis bb extends along the first direction X.

[0125] When the first-order spectrum data in the second direction Y is greater than p, the driving component 214 controls at least one vibration suppression device 210 to drive the rotating disk 213 to rotate at a fourth speed, and the fourth speed is greater than the third speed. The at least one vibration suppression device 210 can be selected as a vibration suppression device 210 whose second axis bb extends along the first direction X.

[0126] like Figures 1 to 10 As shown, in another aspect, the embodiment of the present application further provides a control method for a wind turbine generator set, including:

[0127] S100, configuring the wind turbine generator set provided by the above embodiments;

[0128] S200, respectively obtaining the floating body vibration acceleration of the floating assembly 300 and the cabin vibration acceleration of the cabin 20;

[0129] S300 : configuring the rotation speed of each vibration suppression device 210 according to the vibration acceleration of the floating body and the vibration acceleration of the nacelle.

[0130] The control method provided in the embodiments of the present application is used to control the wind turbine generator sets provided in the above embodiments. By obtaining the vibration acceleration of the floating body of the floating component 300 and the vibration acceleration of the cabin 20, automatic control of the vibration suppression function of the wind turbine generator set can be achieved. The vibration acceleration of the floating body and the vibration acceleration of the cabin are configured to adjust the rotational speed of each vibration suppression device 210, which can avoid the occurrence of under-suppression or over-suppression.

[0131] In some optional embodiments, before step S300, the method provided in the embodiment of the present application further includes:

[0132] The first-order spectrum data of the nacelle 20 in the first direction X, the first-order spectrum data of the nacelle 20 in the second direction Y, the first-order spectrum data of the floating assembly 300 in the first direction, and the first-order spectrum data of the floating assembly 300 in the second direction are determined according to the floating body vibration acceleration and the nacelle vibration acceleration respectively.

[0133] In some optional embodiments, the control method provided by the embodiments of the present application is used in the case that the wind turbine generator set to be controlled includes three floating bodies 310, two floating bodies 310 are provided with vibration suppression devices 210, and one floating body 310 is connected with the tower 10. When the second axis bb of one of the two vibration suppression devices 210 extends along the first direction X and the second axis bb of the other vibration suppression device 210 extends along the second direction Y, the first direction X is perpendicular to the second direction Y, the floating body vibration acceleration includes the first direction rotation acceleration around the first direction X and the second direction rotation acceleration around the second direction Y, the first direction X can be understood as the alpha direction, the second direction Y can be understood as the beta direction, and step S300 includes:

[0134] When the first direction rotation acceleration α corresponds to the first-order spectrum data less than or equal to m, the rotating disc 213 of the vibration suppression device 210 with the second axis bb extending along the first direction X is controlled to be stationary, that is, n = 0, and the rotating disc 213 of the vibration suppression device 210 with the second axis bb extending along the second direction Y is controlled to rotate in the first rotation speed range, that is, 0 < n ≤ A.

[0135] When the first direction rotation acceleration α corresponds to the first-order spectrum data greater than m and less than or equal to L, the rotating disc 213 of the vibration suppression device 210 with the second axis bb extending along the first direction X is controlled to be stationary, that is, n = 0, and the rotating disc 213 of the vibration suppression device 210 with the second axis bb extending along the second direction Y is controlled to rotate in the second rotation speed range, that is, A < n ≤ B, and the minimum value of the second rotation speed range is greater than the maximum value of the first rotation speed range.

[0136] The values of m and L can be set according to the wind field environment in which the wind turbine generator set is located and the vibration limit that can be borne by the corresponding type of the wind turbine generator set. For example, the value of m can be 0.04g, and the value of L can be 0.08g. Of course, this is only an example, and in some embodiments, the value of m can be greater than or less than 0.04g, and similarly, the value of n can be greater than or less than 0.08g.

[0137] The value of A can be 20000rpm, and the value of B can be 35000rpm. For example, the value of the first rotation speed range can be 0 < n ≤ 20000rpm. For example, the value of the second rotation speed range can be 20000rpm < n ≤ 35000rpm.

[0138] The control method provided by the embodiment of the application can realize automatic vibration suppression of the floating fan foundation, and can give corresponding modes according to different first direction X rotation accelerations, so that the vibration suppression capability matches the vibration amplitude, the phenomenon of under-suppression or over-suppression is avoided, and the vibration suppression effect is ensured.

[0139] In some optional embodiments, when the second axis bb of one of the two vibration suppression devices 210 extends along the first direction X and the second axis bb of the other extends along the second direction Y, the first direction X is perpendicular to the second direction Y, and the floating body vibration acceleration includes a first direction rotation acceleration around the first direction X and a second direction rotation acceleration around the second direction Y, the step S300 further includes:

[0140] When the first-order spectrum data corresponding to the second direction rotation acceleration is less than or equal to m, the rotating disc 213 of the vibration suppression device 210 whose second axis bb extends along the second direction Y is controlled to be stationary, that is, n=0, and the rotating disc 213 of the vibration suppression device 210 whose second axis bb extends along the first direction X is controlled to rotate in the first rotation speed range, that is, 0

[0141] When the first-order spectrum data corresponding to the second direction Y rotation acceleration is greater than m and less than or equal to L, the rotating disc 213 of the vibration suppression device 210 whose second axis bb extends along the second direction Y is controlled to be stationary, that is, n=0, and the rotating disc 213 of the vibration suppression device 210 whose second axis bb extends along the first direction X is controlled to rotate in the second rotation speed range, that is, A

[0142] The values of m, L, the first rotation speed range and the second rotation speed range are the same as above, and will not be repeated here.

[0143] The control method provided by the embodiment of the application can further realize automatic vibration suppression of the floating fan foundation, and can give corresponding modes according to different second direction Y rotation accelerations, so that the vibration suppression capability matches the vibration amplitude, the phenomenon of under-suppression or over-suppression is effectively avoided, and the vibration suppression effect is ensured.

[0144] As an optional implementation, the control method provided by the embodiments of the present application comprises the following steps:

[0145] When at least one of the first direction rotation acceleration a corresponding first order frequency spectrum data and the second direction rotation acceleration β corresponding first order frequency spectrum data is less than or equal to m, the control method controls the rotation disc 213 of each vibration suppression device 210 to rotate in the first rotation speed range, i.e. 0 < n ≤ A.

[0146] When at least one of the first direction rotation acceleration a corresponding first order frequency spectrum data and the second direction rotation acceleration β corresponding first order frequency spectrum data is greater than m and less than or equal to n, the control method controls the rotation disc 213 of each vibration suppression device 210 to rotate in the second rotation speed range, i.e. A < n ≤ B, and the minimum value of the second rotation speed range is greater than the maximum value of the first rotation speed range.

[0147] The values of m, L, the first rotation speed range and the second rotation speed range are the same as above, and will not be repeated here.

[0148] The two vibration suppression devices 210 are arranged in the above manner, so that the two vibration suppression devices 210 can work synchronously under different conditions, suppress vibration together, and optimize the vibration suppression effect.

[0149] In some optional embodiments, the control method provided by the above embodiments of the present application further comprises the following steps:

[0150] When the first direction X first order frequency spectrum data ax and the second direction Y first order frequency spectrum data ay of the nacelle 20 are both less than or equal to w, the control method controls the driving component 214 of each vibration suppression device 210 on the fan body 100 to stop, so that the rotation speed of each rotation disc 213 relative to the mounting frame 212 is 0.

[0151] When at least one of the first direction X first order frequency spectrum data and the second direction Y first order frequency spectrum data of the nacelle 20 is greater than w and less than or equal to p, the control method controls the driving component 214 of at least one vibration suppression device 210 on the fan body 100 to drive the rotation disc 213 to rotate at a third rotation speed, i.e. n = C.

[0152] When at least one of the first direction X first order frequency spectrum data and the second direction Y first order frequency spectrum data of the nacelle 20 is greater than p, the control method controls the driving component 214 of at least one vibration suppression device 210 on the fan body 100 to drive the rotation disc 213 to rotate at a fourth rotation speed, i.e. n = D, and the fourth rotation speed is greater than the third rotation speed.

[0153] The value of w and the value of p can be set according to the wind field environment where the wind turbine generator is located and the vibration limit that can be borne by the corresponding type of the wind turbine generator. For example, the value of w can be 0.06g, and the value of p can be 0.08g. Of course, this is an example, and in some embodiments, the value of w can be greater than or less than 0.06g, and the value of p can be greater than or less than 0.08g.

[0154] For example, the third rotational speed can be 20000rpm, and the fourth rotational speed can be 35000rpm. It can be understood that the above is only an optional embodiment, and is not limited to the above values, and can be set according to the wind field environment where the wind turbine generator is located and the vibration limit that can be borne by the corresponding type of the wind turbine generator.

[0155] The control method provided by the embodiment of the application can control the driving component 214 of the vibration suppression device 210 at the corresponding position to drive the rotating disc 213 to rotate at a corresponding speed according to the first-order frequency domain value of the first direction X and the second direction Y, so as to realize automatic vibration suppression of the wind turbine generator, and can give a corresponding mode according to different frequency spectrum data, so that the vibration suppression capability is matched with the vibration amplitude, and the phenomenon of under-suppression or over-suppression is avoided, and the vibration suppression effect is ensured.

[0156] In some optional embodiments, when the first-order frequency spectrum data value of the first direction X is less than or equal to the value of w, the driving component 214 of each vibration suppression device 210 can be controlled to stop, so that the rotational speed of each rotating disc 213 relative to the mounting frame 212 is 0.

[0157] When the first-order frequency spectrum data of the nacelle 20 in the first direction X is greater than w and less than or equal to p, the driving component 214 of at least one vibration suppression device 210 is controlled to drive the rotating disc 213 to rotate at a third rotational speed, and the at least one vibration suppression device 210 can be a vibration suppression device 210 whose second axis bb extends along the second direction Y.

[0158] When the first-order frequency spectrum data of the nacelle 20 in the first direction X is greater than p, the driving component 214 of at least one vibration suppression device 210 is controlled to drive the rotating disc 213 to rotate at a fourth rotational speed, and the fourth rotational speed is greater than the third rotational speed, and the at least one vibration suppression device 210 can be a vibration suppression device 210 whose second axis bb extends along the second direction Y.

[0159] In some other optional embodiments, when the first-order frequency spectrum data value of the nacelle 20 in the second direction Y is less than or equal to the value of w, the driving component 214 of each vibration suppression device 210 can be controlled to stop, so that the rotational speed of each rotating disc 213 relative to the mounting frame 212 is 0.

[0160] When the first-order spectrum data of the nacelle 20 in the second direction Y is greater than w and less than or equal to p, the driving component 214 of the at least one vibration suppression device 210 is controlled to drive the rotating disc 213 to rotate at a third rotating speed, and the at least one vibration suppression device 210 can be the vibration suppression device 210 whose second axis bb extends along the first direction X.

[0161] When the first-order spectrum data of the nacelle 20 in the second direction Y is greater than p, the driving component 214 of the at least one vibration suppression device 210 is controlled to drive the rotating disc 213 to rotate at a fourth rotating speed, and the fourth rotating speed is greater than the third rotating speed, and the at least one vibration suppression device 210 can be the vibration suppression device 210 whose second axis bb extends along the first direction X.

[0162] Although the present application has been described with reference to the preferred embodiments, various modifications can be made to the application without departing from the scope thereof, and equivalent parts can be substituted therefor. In particular, the technical features mentioned in each of the embodiments can be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A floating wind turbine foundation for supporting a tower, characterized in that: The floating wind turbine foundation comprises: a floating assembly comprising a plurality of floating bodies and a connector, wherein the plurality of floating bodies are spaced apart from each other and a center line connecting the floating bodies forms a polygon, two adjacent floating bodies are connected by the connector, and one of the plurality of floating bodies is used to connect to the tower; A vibration suppression system includes a vibration suppression device, a first collector, and a controller, wherein at least two of the plurality of floating bodies are connected to the vibration suppression device; The vibration suppression device includes a base, a mounting frame, a rotating disk, and a driving component, wherein the driving component is connected to the mounting frame and can drive the rotating disk to rotate relative to the mounting frame with a first axis as a rotation center, and the mounting frame is rotatably connected to the base and can rotate relative to the base with a second axis as a rotation center, and the first axis and the second axis are arranged to intersect; The first collector is configured to obtain the vibration acceleration of the floating body of the floating component; The controller is configured to control the driving components of each of the vibration suppression devices on the floating assembly to drive the rotating disk to rotate to a predetermined rotation speed according to the vibration acceleration of the floating body.

2. The floating wind turbine foundation according to claim 1, characterized in that: There are three floating bodies and the center lines connecting them form a triangle. One of the floating bodies is connected to the tower, and the remaining two floating bodies are connected to the vibration suppression device. The second axes of the two vibration suppression devices are arranged to intersect. The controller is configured to control the driving component of at least one vibration suppression device on the floating assembly to drive the rotating disk to a predetermined speed according to the vibration acceleration of the floating body.

3. The floating wind turbine foundation according to claim 2, characterized in that: The second axis of one of the two vibration suppression devices extends along a first direction and the second axis of the other extends along a second direction, the first direction is perpendicular to the second direction, and the floating body vibration acceleration includes a first-direction rotational acceleration around the first direction and a second-direction rotational acceleration around the second direction; the controller is configured to: When the first-order frequency spectrum data corresponding to the first-direction rotational acceleration is less than or equal to m, the rotating disk of the vibration suppression device with the second axis extending along the first direction is controlled to be stationary, and the rotating disk of the vibration suppression device with the second axis extending along the second direction is controlled to rotate within a first speed range; When the first-order spectrum data corresponding to the first-direction rotational acceleration is greater than m and less than or equal to L, the rotating disk of the vibration suppression device with the second axis extending along the first direction is controlled to be stationary, and the rotating disk of the vibration suppression device with the second axis extending along the second direction is controlled to rotate within a second speed range, and the minimum value of the second speed range is greater than the maximum value of the first speed range.

4. The floating wind turbine foundation according to claim 3, characterized in that: The controller is further configured to: When the first-order frequency spectrum data corresponding to the second-direction rotational acceleration is less than or equal to m, the rotating disk of the vibration suppression device with the second axis extending along the second direction is controlled to be stationary, and the rotating disk of the vibration suppression device with the second axis extending along the first direction is controlled to rotate within the first speed range; When the first-order spectrum data corresponding to the second-direction rotational acceleration is greater than m and less than or equal to L, the rotating disk of the vibration suppression device with the second axis extending along the second direction is controlled to be stationary, and the rotating disk of the vibration suppression device with the second axis extending along the first direction is controlled to rotate within a second speed range.

5. The floating wind turbine foundation according to claim 2, characterized in that: The second axes of the two vibration suppression devices converge at the center of the floating assembly, the floating body vibration acceleration includes a first-direction rotational acceleration around the first direction and a second-direction rotational acceleration around the second direction, the first direction and the second direction are perpendicular to each other and intersect with the second axis of each vibration suppression device respectively, and the controller is configured to: When at least one of the first-order spectrum data corresponding to the first-direction rotational acceleration and the first-order spectrum data corresponding to the second-direction rotational acceleration is less than or equal to m, controlling the rotating disk of each of the vibration suppression devices to rotate within a first speed range; When at least one of the first-order spectrum data corresponding to the first-direction rotational acceleration and the first-order spectrum data corresponding to the second-direction rotational acceleration is greater than m and less than or equal to n, the rotating disk of each vibration suppression device is controlled to rotate within a second speed range, and the minimum value of the second speed range is greater than the maximum value of the first speed range.

6. The floating wind turbine foundation according to any one of claims 1 to 5, characterized in that: The vibration suppression device is an axisymmetric structure relative to the first axis of the device, and the center of the floating body is located on the first axis.

7. The floating wind turbine foundation according to any one of claims 1 to 5, characterized in that: The rotating disk is disc-shaped and made of metal material. The output end of the driving component is connected to an output shaft. The driving component is located outside the mounting frame and is connected to the center of the rotating disk through the output shaft to drive the rotating disk to rotate.

8. The floating wind turbine foundation according to any one of claims 1 to 5, characterized in that: The mounting frame has a hollow cavity, the rotating disk is located in the hollow cavity and connected to the driving component, and the hollow cavity is in a vacuum state.

9. A wind turbine generator set, characterized in that: include: The floating wind turbine foundation according to any one of claims 1 to 8; The wind turbine body comprises a tower and a nacelle arranged on the tower, wherein the tower is connected to one of the plurality of floating bodies of the floating wind turbine foundation.

10. The wind turbine generator set according to claim 9, characterized in that: The vibration suppression device is provided on at least one of the tower and the nacelle, and the vibration suppression system further includes a second collector, which is configured to collect the cabin vibration acceleration of the nacelle. The controller is also configured to control the driving components of each vibration suppression device on the wind turbine body to drive the rotating disk to rotate to a predetermined speed according to the cabin vibration acceleration.

11. A control method for a wind turbine generator set, characterized in that: The following steps are involved: A wind turbine generator set as claimed in claim 9 or 10; respectively obtaining a floating body vibration acceleration of the floating assembly and a cabin vibration acceleration of the cabin; The rotational speed of each vibration suppression device is configured according to the vibration acceleration of the floating body and the vibration acceleration of the nacelle.

12. The control method according to claim 11, characterized in that: Before the step of configuring the rotational speed of each vibration suppression device according to the vibration acceleration of the floating body and the vibration acceleration of the nacelle, the control method further includes: According to the vibration acceleration of the floating body and the vibration acceleration of the nacelle, the first-order spectrum data of the nacelle in the first direction and the first-order spectrum data of the floating component in the first direction and the first-order spectrum data of the floating component in the second direction are determined respectively.

13. The control method according to claim 12, characterized in that: When the second axis of one of the two vibration suppression devices extends along a first direction and the second axis of the other extends along a second direction, and the first direction is perpendicular to the second direction, the step of configuring the rotational speed of the vibration suppression device according to the cabin acceleration and the floating body acceleration is: include, When the first-order frequency spectrum data corresponding to the first-direction rotational acceleration is less than or equal to m, the rotating disk of the vibration suppression device with the second axis extending along the first direction is controlled to be stationary, and the rotating disk of the vibration suppression device with the second axis extending along the second direction is controlled to rotate within a first speed range; When the first-order spectrum data corresponding to the first-direction rotational acceleration is greater than m and less than or equal to L, the rotating disk of the vibration suppression device with the second axis extending along the first direction is controlled to be stationary, and the rotating disk of the vibration suppression device with the second axis extending along the second direction is controlled to rotate within a second speed range, and the minimum value of the second speed range is greater than the maximum value of the first speed range.

14. The control method according to claim 12, wherein: When the second axes of the two vibration suppression devices converge at the center of the floating assembly, and the first direction and the second direction are perpendicular to each other and intersect with the second axes of the respective vibration suppression devices, the step of configuring the rotational speed of the vibration suppression device according to the cabin acceleration and the floating body acceleration includes: When at least one of the first-order spectrum data corresponding to the first-direction rotational acceleration and the first-order spectrum data corresponding to the second-direction rotational acceleration is less than or equal to m, controlling the rotating disk of each of the vibration suppression devices to rotate within a first speed range; When at least one of the first-order spectrum data corresponding to the first-direction rotational acceleration and the first-order spectrum data corresponding to the second-direction rotational acceleration is greater than m and less than or equal to n, the rotating disk of each vibration suppression device is controlled to rotate within a second speed range, and the minimum value of the second speed range is greater than the maximum value of the first speed range.

15. The control method according to claim 12, characterized in that: The step of configuring the rotation speed of the vibration suppression device according to the cabin acceleration and the floating body acceleration also includes When the values ​​of the first-order spectrum data of the nacelle in the first direction and the first-order spectrum data in the second direction are both less than or equal to the value w, the driving components of the vibration suppression devices on the fan body are controlled to stop, so that the rotational speed of each rotating disk relative to the mounting frame is 0; When at least one of the values ​​of the first-order spectrum data of the nacelle in the first direction and the first-order spectrum data in the second direction is greater than w and less than or equal to p, controlling the driving component of at least one of the vibration suppression devices on the wind turbine body to drive the rotating disk to rotate at a third speed; When at least one of the values ​​of the first-order spectrum data in the first direction and the first-order spectrum data in the second direction of the nacelle is greater than p, the driving component of at least one of the vibration suppression devices on the fan body is controlled to drive the rotating disk to rotate at a fourth speed, and the fourth speed is greater than the third speed.

Images