CN116838545A - Floating type fan floating body, wind generating set and control method - Google Patents

Abstract

The invention relates to a floating type fan floating body, a wind generating set and a control method, wherein the floating type fan floating body comprises the following components: the floating body comprises a plurality of floating bodies which are arranged at intervals and a connecting body connected between the floating bodies; the device comprises a plurality of stabilizing devices, wherein the stabilizing devices are arranged on a floating body at intervals, each stabilizing device comprises a mechanical arm, a driving piece, a first impeller and a base, the base is connected with the floating body through the mechanical arms and has a rotational freedom degree relative to the floating body, the base is provided with an inner cavity, a first opening and a second opening which are communicated with the inner cavity, the first opening, the inner cavity and the second opening form a circulating channel of seawater, the first impeller is arranged in the inner cavity, the driving piece drives the first impeller to rotate and drive the seawater to flow in the circulating channel so as to provide acting force in a preset direction for the floating body and push the floating body to move in the seawater. The invention does not need a mooring system, has simple integral structure and greatly reduces the difficulty of construction operation and maintenance procedures.

Description

Floating type fan floating body, wind generating set and control method

Technical Field

The invention relates to the technical field of wind power, in particular to a floating type fan floating body, a wind generating set and a control method.

Background

The realization of continuous boosting double-carbon targets in the wind power industry is currently developing towards single-machine capacity maximization, complete machine light weight, intellectualization, ocean and the like. According to statistics, the accumulated installed quantity of the offshore wind power is increased year by year. With the large-scale development of offshore resources, the development and utilization of deep-open sea resources are attracting attention. Under the status of the property, the floating wind generating set is developed gradually and becomes a power-assisted army of the subsequent offshore wind power.

The existing floating type fan floating body is usually fixed on the seabed in a mooring mode, so that constraint of a certain movement range is achieved, and the problems that collision occurs between wind generating sets or the wind generating sets are difficult to control due to the fact that the whole movement range of the wind generating sets is too large are avoided.

However, when the floating type wind turbine floating body is moored, piling is needed on the seabed, and thousands of tons of mooring makes the operation construction and maintenance more complex, so that the whole floating type wind turbine floating body has high cost and large construction difficulty.

Disclosure of Invention

The embodiment of the invention provides a floating type fan floating body, a wind generating set and a control method, wherein the floating type fan floating body can ensure the support requirement on a tower, a mooring system is not needed, the whole structure is simple, and the difficulty of construction operation and maintenance procedures is greatly reduced.

In one aspect, an embodiment according to the present invention provides a floating wind turbine floating body disposed in sea water and adapted to support a tower, the floating wind turbine floating body comprising: the floating body comprises a plurality of floating bodies which are arranged at intervals and a connecting body connected between the floating bodies; the device comprises a plurality of stabilizing devices, wherein the stabilizing devices are arranged on a floating body at intervals, each stabilizing device comprises a mechanical arm, a driving piece, a first impeller and a base, the base is connected with the floating body through the mechanical arms and has a rotational freedom degree relative to the floating body, the base is provided with an inner cavity, a first opening and a second opening which are communicated with the inner cavity, the first opening, the inner cavity and the second opening form a circulating channel of seawater, the first impeller is arranged in the inner cavity, the driving piece drives the first impeller to rotate and drive the seawater to flow in the circulating channel so as to provide acting force in a preset direction for the floating body and push the floating body to move in the seawater.

According to an aspect of an embodiment of the present invention, the mechanical arm includes a first arm connected to the floating body and a second arm connected to the base, one ends of the first and second arms toward each other are connected to each other and have a rotational degree of freedom, and the first and second arms are rotatable with each other to adjust an axial direction of the first impeller.

According to one aspect of the embodiment of the invention, along the axial direction of the first impeller, the base is provided with a top wall, a bottom wall and side walls which are oppositely arranged and are connected between the top wall and the bottom wall, the top wall, the bottom wall and the side walls enclose to form an inner cavity, the first opening is arranged on the bottom wall, the second opening is arranged on one of the top wall and the side walls, the driving piece and the first impeller are arranged in the inner cavity, the driving piece is connected with the base, and the mechanical arm is connected with one of the top wall and the side walls.

According to one aspect of an embodiment of the invention, the radial dimension of the sidewall decreases and then increases in the axial direction of the first impeller.

According to one aspect of the embodiment of the invention, the driving member comprises a driving motor, a gearbox and a driving shaft, wherein the input end of the gearbox is connected with the driving motor, the output end of the gearbox is connected with the driving shaft, the first impeller is connected with the driving shaft, and the driving motor is connected with the base through the adapter frame.

According to one aspect of the embodiment of the invention, the driving member comprises a direct-drive motor and a driving shaft, the direct-drive motor comprises a rotor and a stator which are in running fit, the driving shaft is coaxially arranged with the direct-drive motor and connected with the rotor, and the stator is connected with the base through a transfer frame.

According to an aspect of an embodiment of the present invention, the first impeller includes a first hub connected with the driving member, a plurality of first blades spaced apart in a circumferential direction of the first hub and connected with the first hub through the pitch system to adjust a pitch angle of the first blades.

According to an aspect of the embodiment of the present invention, the stabilizing device further includes a rectifying member disposed in the inner cavity and connected to the base, the rectifying member being disposed between the first opening and the first impeller to rectify a flow direction of the seawater entering through the first opening.

According to an aspect of the embodiment of the invention, the rectifying member includes a second hub and a plurality of second blades, the plurality of second blades are arranged at intervals in a circumferential direction of the second hub and are connected with the hub, one end of each second blade, which is away from the hub, is connected with the base, and a rectifying hole is formed between two adjacent second blades.

According to one aspect of the embodiment of the invention, the plurality of floating bodies are uniformly arranged at intervals by taking the first axis as the center, a connecting body is connected between two adjacent floating bodies, one floating body in the plurality of floating bodies is used for being connected with the tower, the number of the stabilizing devices is the same as that of the floating bodies, and each stabilizing device is connected with one floating body or the connecting body through a mechanical arm.

According to one aspect of the embodiment of the invention, the number of the floating bodies is n and the floating bodies comprise a first floating body and n-1 second floating bodies, n is more than or equal to 4, n-1 second floating bodies are uniformly arranged at intervals by taking the first floating body as a center, connecting bodies are arranged between each second floating body and the first floating body and between two adjacent second floating bodies, the number of the stabilizing devices is the same as that of the second floating bodies, and each stabilizing device is connected with one second floating body or the connecting body between two adjacent second floating bodies through a mechanical arm.

In another aspect, according to an embodiment of the present invention, there is provided a wind turbine generator set including: the floating fan floating body; the fan main body is arranged on the floating body and comprises a tower connected with one floating body, a cabin arranged on the tower and an impeller arranged on the cabin.

According to another aspect of an embodiment of the present invention, the method further comprises the controller configured to:

acquiring the wind direction of incoming wind; determining the direction of the force required by the floating fan floating body to resist the incoming wind according to the direction of the incoming wind; determining the axial direction to be adjusted of a first impeller of each stabilizing device according to the direction of the acting force; the mechanical arm is driven to rotate, so that the first impeller of each stabilizing device reaches the axis direction to be adjusted.

In still another aspect, according to an embodiment of the present invention, a control method of the wind turbine generator set is provided, including:

acquiring the wind direction of incoming wind;

determining the direction of the force required by the floating fan floating body to resist the incoming wind according to the direction of the incoming wind;

determining the axial direction to be adjusted of a first impeller of each stabilizing device according to the direction of the acting force;

driving the mechanical arm to rotate so that the first impeller of each stabilizing device reaches the axial direction to be adjusted;

And controlling a driving piece of the stabilizing device to drive the first impeller to rotate.

According to still another aspect of the embodiment of the present application, the step of determining the axial direction to be adjusted of the first impeller of each stabilizing device according to the direction of the force includes:

when the acting force comprises a first acting force parallel to the sea level and a second acting force perpendicular to the sea level, the axial directions of the first impellers of at least two stabilizing devices in the plurality of stabilizing devices are mutually intersected and arranged parallel to the sea level, and the axial direction of the first impeller of at least one stabilizing device is perpendicular to the sea level;

when the force comprises a circumferential force arranged around the axis of the tower, the axial direction of the first impeller of each stabilizer is arranged crosswise and parallel to the sea level.

According to still another aspect of the embodiment of the present application, the control method further includes:

acquiring a coordinate value of a corresponding front position of the floating fan floating body relative to an original point position;

when the coordinate value exceeds the preset range, determining the axis direction of the first impeller of each stabilizing device to be adjusted according to the coordinate value;

driving the mechanical arm to rotate so that the first impeller of each stabilizing device reaches the axial direction to be adjusted;

And driving the first impeller to rotate so as to enable the floating fan floating body to move until the coordinate value is within a preset range.

According to the floating type fan floating body, the wind generating set and the control method provided by the embodiment of the invention, the floating type fan floating body comprises the floating body and the stabilizing device, the floating body comprises a plurality of floating bodies which are arranged at intervals, the connecting bodies are connected between the floating bodies, the integrity of the floating type fan floating body is improved, one of the floating bodies can be used for supporting and connecting with the tower, and the supporting effect of the floating type fan floating body is ensured. Because the quantity of stabilising arrangement is a plurality of, and every stabilising arrangement includes arm, driving piece, first impeller and base, the base passes through the arm and floats the body coupling and float the body relatively and have degree of freedom of rotation, when the floating fan body takes place to remove, can adjust the relative body rotation of floating of base to predetermined angle, then drive first impeller and rotate, with the flow of driving the sea water in the circulation passageway that first opening, inner chamber and second opening formed, provide the axial force along first impeller axial, stabilising arrangement can cooperate, produce resultant force and resist the effort that the inflow wind produced jointly, keep the position stability of floating fan body.

When the floating type fan floating body is moved beyond the preset sea area range due to faults such as power failure or high wind and the like, the relative position of the stabilizing device relative to the floating body can be adjusted, so that the stabilizing device provides acting force in the moving direction for the floating body to push the floating type fan floating body to move wholly in sea water, the floating type fan floating body is always located in the set sea area range, a mooring system is not required to be arranged, the restraint on the moving range of the floating type fan floating body can be ensured, the integral cost of the floating type fan floating body is reduced, the mooring system is not required, the floating type fan floating body can be directly placed in the set sea area range, the integral structure is simple, and the difficulty of construction operation and maintenance procedures is greatly reduced.

Drawings

Features, advantages, and technical effects of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a schematic view of a wind turbine generator system according to an embodiment of the present invention;

FIG. 2 is a schematic view of FIG. 1 taken along the line A-A;

FIG. 3 is a cross-sectional view taken along the direction B-B in FIG. 1;

FIG. 4 is a schematic view of the freedom of movement of a floating blower float in accordance with one embodiment of the present invention;

FIG. 5 is a schematic view of a wind turbine generator system according to another embodiment of the present invention;

FIG. 6 is a schematic view in section along the direction C-C in FIG. 5;

FIG. 7 is a control logic diagram of a control method of one embodiment of the present invention;

FIGS. 8-10 are schematic illustrations of the action of a floating fan float under different incoming winds according to one embodiment of the present invention;

FIG. 11 is a schematic view of a wind turbine generator system in a windy shutdown state according to an embodiment of the invention;

FIG. 12 is a schematic diagram of the floating wind turbine floating body sea level position control of one embodiment of the present invention.

100-a fan body; 10-tower; 20-nacelle; a 30-generator; 40-wind wheel; 41-hub; 42-leaf;

200-floating type fan floating body;

210-a floating body;

220-linker;

300-stabilizing means;

310-a mechanical arm; 311-first arm; 312-a second arm;

320-base; 320 a-lumen; 320 b-a first opening; 320 c-a second opening; 321-a bottom wall; 322-top wall; 323-sidewalls;

330-a driver; 331-rotor; 332-a stator; 333-drive shaft;

340-a first impeller; 341-a first hub; 342-first blade;

350-rectifying piece; 351-a second hub; 352-second blade.

In the drawings, like parts are designated with like reference numerals. The figures are not drawn to scale.

Detailed Description

Features and exemplary embodiments of various aspects of the invention are described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by showing examples of the invention. In the drawings and the following description, at least some well-known structures and techniques have not been shown in detail in order not to unnecessarily obscure the present invention; also, the dimensions of some of the structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

The azimuth words appearing in the following description are all directions shown in the drawings, and do not limit the specific structures of the floating fan floating body, the wind generating set and the control method of the invention. In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected. The specific meaning of the above terms in the present invention can be understood as appropriate by those of ordinary skill in the art.

As shown in fig. 1, an embodiment of the present application provides a wind generating set including a floating type wind turbine floating body 200 and a wind turbine body 100, wherein the wind turbine body 100 includes a tower 10, a nacelle 20, a generator 30, and a wind wheel 40. The tower 10 is connected to a floating support foundation 200, the nacelle 20 is disposed on top of the tower 10, and the generator 30 is disposed on the nacelle 20. In some examples, the generator 30 may be located outside of the nacelle 20, although in some examples, the generator 30 may be located inside of the nacelle 20. The wind wheel 40 includes a hub 41 and a plurality of blades 42 connected to the hub 41. The wind wheel 40 is connected with the rotor of the generator 30 through the hub 41, and further drives the rotor to rotate relative to the stator, so that the power generation requirement of the wind generating set is met.

Because the floating wind turbine generator system has great difference with the land wind turbine generator system and the offshore single pile fixed wind turbine generator system, a mooring mode is generally adopted to fix the floating fan floating body on the seabed, the constraint of a certain movement range is realized, and the problems that the whole movement range of the wind turbine generator system is too large to cause collision among the wind turbine generator systems or the wind turbine generator system is difficult to control and the like are avoided.

However, when the floating type draught fan floating body is moored, piling is needed on the seabed, and thousands of tons of mooring enable operation construction and maintenance to be complex, so that the whole floating type draught fan floating body is high in cost and high in construction difficulty.

As shown in fig. 1 to 3, based on this, the embodiment of the present application provides a floating type wind turbine floating body 200 disposed in sea water and used for supporting a tower 10, the floating type wind turbine floating body 200 including a floating body including a plurality of floating bodies 210 disposed at intervals from each other and a connection body 220 connected between the floating bodies 210, and a stabilizing device 300. The number of the stabilizing devices 300 is multiple and the stabilizing devices are arranged on the floating body at intervals, each stabilizing device 300 comprises a mechanical arm 310, a driving piece 330, a first impeller 340 and a base 320, the base 320 is connected with the floating body through the mechanical arm 310 and has a rotation freedom degree relative to the floating body, the base 320 is provided with an inner cavity 320a, a first opening 320b and a second opening 320c which are communicated with the inner cavity 320a, the first opening 320b, the inner cavity 320a and the second opening 320c form a circulation channel of seawater, the first impeller 340 is arranged in the inner cavity 320a, and the driving piece 330 drives the first impeller 340 to rotate and drives the seawater to flow in the circulation channel so as to provide a force in a preset direction for the floating body and push the floating body to move in the seawater.

The number of floating bodies 210 included in the floating body may be three, four, five or more. The plurality of floating bodies 210 may be spaced apart from each other with the first axis as a center, and the centers of the floating bodies 210 may be sequentially connected to form a polygon. Of course, one of the plurality of floating bodies 210 may be connected to the tower 10 with the floating body 210 as the center, and the remaining floating bodies 210 may be provided at intervals with the floating body 210 connected to the tower 10 as the center.

Each floating body 210 may be cylindrical as a whole, and in a direction perpendicular to the sea level, or in a height direction of the tower 10, the orthographic projection shape of the floating body 210 may be a regular geometric shape, and a central line of each floating body 210 may be polygonal, or it may be understood that a central line of orthographic projection of each floating body 210 is polygonal.

Alternatively, the forward projection shape of the floating body 210 in a direction perpendicular to the sea level may be a circle, an ellipse, or a polygon, and when a polygon, a regular polygon is selected.

Sea level is understood to be the surface of sea water in a calm state, unaffected by wind and waves.

The connecting body 220 can adopt the structural forms of connecting rods, connecting plates and the like, the connecting body 220 can be connected between two adjacent floating bodies 210, the connecting body 220 can be connected with the floating bodies 210 by adopting a fastening piece, and the connecting body can also adopt an integral structural form.

The number of stabilization devices 300 may be three, four, or more. The stabilization device 300 may be attached to the floating body 210, but may be attached to the connecting body 220.

The robotic arm 310 may take the form of an automated robot having rotational degrees of freedom, although multiple degrees of freedom of the robotic arm 310 may be used. Can be made of rust-proof materials and has good anti-corrosion function on electric parts. The power supply can be obtained from the electric energy converted from wind energy.

The first impeller 340 may be disposed in the inner cavity 320a of the base 320 to have a rotational degree of freedom with respect to the base 320 and not interfere with the sidewall 323 of the base 320, and the driving member 330 may be disposed in the inner cavity 320a to be connected with the base 320, thereby ensuring driving of the first impeller 340. The axial direction or axial direction of the first impeller 340 is understood to be the direction of extension of its rotational axis.

According to the floating type fan floating body 200, the wind generating set and the control method provided by the embodiment of the invention, the floating type fan floating body 200 comprises a floating body and a stabilizing device 300, the floating body comprises a plurality of floating bodies 210 which are arranged at intervals, the connecting bodies 220 are connected between the floating bodies 210, the integrity of the floating type fan floating body 200 is improved, one of the floating bodies 210 can be used for supporting and connecting the tower 10, and the supporting effect of the floating body is ensured.

Because the number of the stabilizing devices 300 is plural, and each stabilizing device 300 comprises a mechanical arm 310, a driving piece 330, a first impeller 340 and a base 320, the base 320 is connected with the floating body through the mechanical arm 310 and has a rotational degree of freedom relative to the floating body, when the floating fan floating body 200 moves, the base 320 can be adjusted to rotate to a predetermined angle relative to the floating body, and then the first impeller 340 is driven to rotate so as to drive seawater to flow in a circulation channel formed by the first opening 320b, the inner cavity 320a and the second opening 320c, axial force along the axial direction of the first impeller 340 is provided, and the stabilizing devices 300 can cooperate to generate force with resultant force to resist the incoming wind together, so that the position of the floating fan floating body 200 is kept stable.

When the floating fan floating body 200 moves beyond the preset sea area due to the failure such as power failure, the relative position of the stabilizing device 300 relative to the floating body can be adjusted, so that the stabilizing device 300 provides acting force in the moving direction for the floating body, and the floating fan floating body 200 is pushed to move in the sea water, so that the floating fan floating body is always located in the set sea area. The floating type fan floating body 200 can be restrained without a mooring system, the motion range of the floating type fan floating body 200 can be restrained, the integral cost of the floating type fan floating body 200 is reduced, the floating type fan floating body is directly placed in a set sea area range without the mooring system, the whole structure is simple, and the difficulty of construction operation and maintenance procedures is greatly reduced.

As shown in fig. 4, from the aspect of external load, the floating fan floating body 200 is wholly faced with wind load, wave load, ocean current load, ice load and the like, from the aspect of overall dynamics, due to the "floating" characteristic of the floating wind power generator unit, the floating support foundation and the wind power generator unit where the floating support foundation is located have all-around six degrees of freedom, and three translational degrees of freedom comprise: heave, cross, heave. The three rotational degrees of freedom include: the floating wind turbine generator system has the advantages that under the actions of rolling, longitudinal and lateral movement and head movement, the motion characteristics and mechanisms of the floating wind turbine generator system are more complicated under the external random load input and the multi-system coupling action of the wind turbine generator system.

With continued reference to fig. 4, the motion stability of the floating fan floating body 200 is one of the most important indexes for ensuring the continuous, stable, safe and efficient output of the unit and ensuring the generated energy, however, the impeller captures the wind energy to generate the rotating mechanical energy, and simultaneously generates the same thrust as the incoming wind direction, and the acting force is transmitted to the floating fan floating body 200 to enable the wind generating set to generate an elevation angle in the y rotation direction in fig. 2, so that the impeller of the wind generating set and the incoming wind direction generate an included angle, and according to the formula (1), the generated energy P is in direct proportion to the generated energy a, and the elevation angle reduces the generated energy a of the unit, thereby reducing the generated energy of the unit.

In the floating fan floating body 200 provided by the embodiment of the application, the base 320 is connected with the floating body through the mechanical arm 310 and has a rotational degree of freedom relative to the floating body, and the base 320 can be adjusted to rotate by a certain angle relative to the floating body, so that the first impeller 340 is driven to rotate, and the seawater is driven to flow in a circulation channel formed by the first opening 320b, the inner cavity 320a and the second opening 320c, so that the seawater enters from one of the first opening 320b and the second opening 320c and flows out of the base 320 from the other, and a force in the axial direction of the first impeller 340 is generated in the process to have a component force in the height direction of the tower 10, so that part of the floating body 210 can float or sink in the height direction of the tower 10, the stability of the floating fan floating body 200 can be ensured, and the power generation amount of the wind generating set is ensured.

And, when the incoming wind flows in at different angles, the resultant force can be generated by the action of at least part of the stabilizing devices 300, and the magnitude of the resultant force can be nearly equal to the thrust generated by the rotation of the incoming wind generator set, so that the resultant force can be formed by adjusting the axial direction of the first impeller 340 of the stabilizing device 300, thereby counteracting the acting force generated by the wind generator set and having the same direction as the incoming wind direction, further maintaining the relative position of the floating foundation and ensuring the stability.

In some alternative embodiments, the floating fan floating body 200 provided in the embodiments of the present application is provided with a plurality of floating bodies 210 spaced and uniformly arranged around a first axis, a connecting body 220 is connected between two adjacent floating bodies 210, one floating body 210 of the plurality of floating bodies 210 is used for connecting with the tower 10, the number of stabilizing devices 300 is the same as the number of floating bodies 210, and each stabilizing device 300 is connected to one floating body 210 or the connecting body 220 through a mechanical arm 310.

The number of floating bodies 210 may take on values of 3, 4, 5 or even more. The central line of each floating body 210 may be triangular, quadrangular, pentagonal, or the like, and may be a regular polygon. The center of each floating body 210 is located at each vertex of the polygon.

Illustratively, when the number of floating bodies 210 is 3, the center line of each floating body 210 is triangular, optionally regular triangle. When the number of the floating bodies 210 is 4, the central connecting line of each floating body 210 is quadrilateral, and can be selected as regular quadrilateral. When the number of the floating bodies 210 is 5, the line connecting the central lines of the respective floating bodies 210210 is pentagonal, optionally regular pentagonal.

In some alternative embodiments, embodiments of the present application provide a floating blower float 200. The mechanical arm 310 includes a first arm 311 connected to the floating body and a second arm 312 connected to the base 320, one ends of the first arm 311 and the second arm 312 facing each other are connected to each other and have a rotational degree of freedom, and the first arm 311 and the second arm 312 can be rotated with each other to adjust an axial direction of the first impeller 340.

Alternatively, the rotational connection between the first arm 311 and the second arm 312 may be ball-hinged, although a universal joint connection may be used, so that there are at least two degrees of rotational freedom between the first arm 311 and the second arm 312, and thus the base 320 has at least two degrees of rotational freedom with respect to the floating body.

Illustratively, the robotic arm 310 may have at least two degrees of rotational freedom. Referring to the coordinate system of fig. 1, in some alternative embodiments, the mechanical arm 310 may have two degrees of rotational freedom, namely, a degree of rotational freedom about an X-axis and a degree of rotational freedom about a Z-axis, such that the stabilization device 300 may rotate about the X-axis and about the Z-axis relative to the floating body foundation, and the X-axis may be perpendicular to each other. Alternatively, the Z-axis may extend in the height direction of the tower.

According to the floating fan floating body 200 provided by the embodiment of the application, the mechanical arm 310 comprises the first arm 311 connected with the floating body and the second arm 312 connected with the base 320, one ends of the first arm 311 and the second arm 312 facing each other are mutually connected and have a rotational degree of freedom, so that the connection requirement between the base 320 and the floating body can be ensured, the rotation requirement of the base 320 relative to the floating body can be ensured, the base 320 can drive the first impeller 340 and the driving piece 330 to move, the axis extending direction of the first impeller 340 is regulated, and when the first impeller 340 rotates and drives seawater to flow in a circulation channel, the floating body is favorably provided with a force in a preset direction and is pushed to move in the seawater, and the force generated by incoming wind is resisted.

In some alternative embodiments, the floating fan floating body 200 according to the present application includes a top wall 322, a bottom wall 321, and a side wall 323 connected between the top wall 322 and the bottom wall 321, the top wall 322, the bottom wall 321, and the side wall 323 are disposed opposite to each other along an axial direction of the first impeller 340, an inner cavity 320a is formed by enclosing the top wall 322, the bottom wall 321, and the side wall 323, a first opening 320b is disposed on the bottom wall 321, a second opening 320c is disposed on one of the top wall 322 and the side wall 323, a driving element 330 and the first impeller 340 are disposed in the inner cavity 320a, the driving element 330 is connected to the base 320, and the mechanical arm 310 is connected to one of the top wall 322 and the side wall 323.

The second opening 320c may be provided in the top wall 322, but may also be provided in the side wall 323, optionally in the top wall 322. The arm 310 may be attached to the top wall 322, but may be attached to the side wall 323, or may be attached to the side wall 323.

The number of the first openings 320b may be one, or of course, may be two or more, and when two or more, the two or more first openings 320b are disposed at intervals. Accordingly, the number of the second openings 320c may be one, or may be more than two, and when more than two, the more than two second openings 320c are spaced apart from each other.

The floating fan floating body 200 provided by the embodiment of the application has the advantages that the base 320 adopts the above-mentioned form, the structure is simple, and a relatively independent space can be formed for the first impeller 340 in a surrounding manner, so that the first impeller 340 can play a role in guiding seawater in the rotating process, and the seawater is guided to flow between the first opening 320b and the second opening 320c, so that the driving force in a preset direction is provided for the connected floating body 210, and the floating fan floating body 200 is pushed integrally or kept in a preset sea area range.

In some alternative embodiments, the embodiments of the present application provide a floating blower float 200 with a sidewall 323 that decreases in radial dimension and increases in radial dimension along the axial direction of the first impeller 340.

That is, the side wall 323 may take a waist shape or a dumbbell shape.

Through the arrangement of the floating fan floating body 200 provided by the embodiment of the application, the seawater is guided to flow along the axial direction of the first impeller 340, the driving requirement on the floating body 210 is ensured, and the moving requirement of the whole floating fan floating body 200 in the seawater is met.

In some alternative embodiments, the drive 330 includes a motor, which may include a motor, a pod, and a drive shaft 333, the motor being coupled via a pod base 320, the motor being directly or indirectly coupled to the drive shaft 333, the first impeller 340 being coupled to the drive shaft 333. The motor may be a direct drive motor, a double feed motor, or the like.

The driving member 330 has the above-mentioned structure, which can ensure the driving requirement of the first impeller 340, and has a simple and compact structure, so as to facilitate the installation in the base 320.

In some alternative embodiments, the drive 330 includes a direct drive motor including a rotor 331 and a stator 332 that are rotationally coupled, and a drive shaft 333 coaxially disposed with the direct drive motor and coupled to the rotor 331, the stator 332 coupled to the base 320 via a transition frame.

According to the floating fan floating body 200 provided by the embodiment of the application, the driving piece 330 adopts the above-mentioned form, and the rotor 331 can rotate relative to the stator 332 by power supply, so that the driving shaft is driven to rotate, the driving requirement on the first impeller 340 can be met, and the posture adjustment requirement of the floating fan floating body 200 is further ensured.

In addition, the driving member 330 of the above-described form may also enable the magnitude and direction of the driving force to be controlled. Specifically, the direction of the axial force can be controlled by controlling the direction of the output torque of the direct drive motor by changing the direction of rotation of the rotor 331 blades via the drive shaft.

It will be appreciated that the use of the drive member 330 described above is only an alternative embodiment, and in some alternative embodiments, the floating fan float 200 provided in this embodiment of the present application may further enable the drive member 330 to include a drive motor, a gearbox, and a drive shaft, wherein the gearbox has an input end connected to the drive motor and an output end connected to the drive shaft, and the first impeller 340 is connected to the drive shaft, and the drive motor is connected to the base 320 through a transfer frame.

The gearbox may be a multi-stage gearbox, which is connected between the drive motor and the drive shaft, so that the kinetic energy of the drive motor can be transmitted to the drive shaft via the gearbox. The speed of the output of the driving motor can be increased or reduced through the gearbox and then transmitted to the driving shaft, so that the driving requirement of the driving shaft is ensured.

The axis of the driving shaft and the axis of the driving motor can be intersected, and of course, the driving shaft and the axis of the driving motor can also be parallel, if the driving shaft and the axis of the driving motor are intersected, the driving motor can be particularly commutated through a gearbox, or a commutation structure is additionally arranged, so that the transmission of kinetic energy is ensured.

The floating fan float 200 provided by the embodiment of the present application, the driving member 330 adopts the above-mentioned form, can ensure the driving requirement of the first impeller 340. And, the first impeller 340 can be made to obtain a higher rotational speed, improving the response rate of the floating support foundation in making attitude adjustments.

In some alternative embodiments, the first impeller 340 of the floating wind turbine floating body 200 provided in the present embodiment includes a first hub 341, a plurality of first blades 342, and a pitch system, the first hub 341 being connected to the driving member 330, the plurality of first blades 342 being spaced apart in a circumferential direction of the first hub 341 and being connected to the first hub 341 through the pitch system to adjust a pitch angle of the first blades 342.

The structural form of the pitch system can adopt the pitch form of the wind wheel of the wind generating set, and the attack angle of the fluid on the first blade 342 is changed by changing the pitch angle between the first blade 342 and the first hub 341.

According to the floating fan floating body 200 provided by the embodiment of the application, the first impeller 340 comprises the first blades 342 and the first hub 341, and meanwhile, the first impeller 340 and the first hub 341 are rotationally connected through the pitch system, so that the pitch angle of the first blades 342 is adjustable, and further, the interaction force between the first impeller and the sea water is changed, so that the torque and the power captured by the first impeller 340 are controlled.

Alternatively, the pitch system may include a pitch bearing and a power source, the pitch bearing may include an inner ring and an outer ring that are rotationally fitted, one of the inner ring and the outer ring is connected with the first hub 341 and the other is connected with the first blade 342, and the power source may be engaged with the pitch bearing and drive the inner ring and the outer ring of the pitch bearing to rotate relatively, thereby achieving pitch. The power source comprises, but is not limited to, a motor and a driving wheel, and can be consistent with the pitch principle of a hub and blades of the wind generating set.

In some alternative embodiments, the floating blower float 200 provided in the embodiments of the present application, the rectifying member 350 is disposed between the first opening 320b and the first impeller 340 to rectify the flow direction of the seawater entering through the first opening 320 b.

The rectifying member 350 may be connected to the base 320, and the rectifying member 350 may be a plate member having a rectifying hole or may be in the form of an impeller.

According to the floating fan floating body 200 provided by the embodiment of the application, the stabilizing device 300 further comprises the rectifying piece 350, so that the direction of the incoming seawater flow can be adjusted by utilizing the rectifying piece 350, and the energy loss caused by the contact of the seawater entering in multiple directions with the first impeller 340 is avoided.

In some alternative embodiments, the floating fan float 200 provided by the embodiment of the present application, the rectifying member 350 includes a second hub 351 and a plurality of second blades 352, the plurality of second blades 352 are disposed at intervals in a circumferential direction of the second hub 351 and connected to the second hub 351, one end of the second blade 352 facing away from the second hub 351 is connected to the base 320, and a rectifying hole is formed between two adjacent second blades 352.

The number of second blades 352 included in the rectifying member 350 may be two, three or more, as long as the rectifying member can ensure the rectification of the incoming seawater and reduce the energy loss.

According to the floating fan floating body 200 provided by the embodiment of the application, the rectifying piece 350 adopts the above-mentioned form, so that the rectifying requirement on the incoming and outgoing seawater can be met, and meanwhile, the structure is simple, and the rectifying effect is good.

It will be appreciated that the floating fan floats 200 provided in the above embodiments of the present application are illustrated by taking the example that the plurality of floating bodies 210 are uniformly spaced about the first axis, which is some alternative embodiments, but not limited to the above.

As shown in fig. 5 and 6, in some embodiments, the number of floating bodies 210 is n and includes one first floating body and n-1 second floating bodies, where n is greater than or equal to 4, n-1 second floating bodies are spaced apart from each other and uniformly arranged around the first floating body, and connectors 220 are disposed between each second floating body and the first floating body and between two adjacent second floating bodies, and the number of stabilizing devices 300 is the same as that of the second floating bodies, and each stabilizing device 300 is connected to one of the second floating bodies or the connectors 220 between two adjacent second floating bodies 210 through a mechanical arm 310.

Through the arrangement, the floating fan floating body 200 provided by the embodiment of the application can be connected with the tower 10 through the first floating body 210 and support the tower 10, so that the support requirement of the tower can be ensured, and the arrangement of the stabilizing device 300 can meet the moving requirement of the floating fan floating body 200 in seawater, so that the floating fan floating body 200 can also meet the requirement of being kept in a preset sea area range even if a mooring structure is not arranged.

The wind generating set provided by the embodiment of the application comprises the floating type fan floating body 200 provided by the embodiments, so that the offshore wind power generation requirement can be met, meanwhile, a mooring system is not required to be arranged, the constraint on the motion range of the wind generating set can be ensured, the overall cost of the wind generating set is reduced, mooring pile driving is not required, the wind generating set can be directly placed in a set sea area range, and the construction difficulty is low.

As shown in fig. 7, in yet another aspect, an embodiment of the present application further provides a control method of the wind generating set, including:

s100, acquiring the wind direction of incoming wind.

S200, determining the direction of the force required by the floating fan floating body 200 to resist the incoming wind according to the incoming wind direction.

And S300, determining the axial direction to be adjusted of the first impeller 340 of each stabilizing device 300 according to the direction of the acting force.

And S400, driving the mechanical arm 310 to rotate so that the first impeller 340 of each stabilizing device 300 reaches the axial direction to be adjusted.

S500, controlling the driving piece 330 of the stabilizing device 300 to drive the first impeller 340 to rotate.

In step S100, the current power information of the wind turbine generator set may be directly obtained by the overall controller thereof, or may be obtained by calculation according to the current rotational speed thereof.

In step S200, the posture of the floating fan floater 200 is closely related to the incoming wind, and the incoming wind is taken as an example to describe the different states of the wind wheel of the wind generating set. The directions of the thrust of the wind turbine generator set are determined by different directions, and meanwhile, the thrust is strongly related to the posture of the floating type wind turbine floating body 200, and the posture of the floating type wind turbine generator set is adjusted and controlled based on the thrust.

Taking the example of three different directions of the incoming wind in fig. 8 to 10 as an illustration, based on the principle that the stabilizing device 300 can generate the axial force, as shown in fig. 8 to 10, the axial direction of the first impeller 340 corresponding to the stabilizing device 300a is the Z direction or the horizontal direction, the axial directions of the first impellers 340 corresponding to the stabilizing device 300b and the stabilizing device 300c are parallel to the corresponding connecting body 220, when the incoming wind direction V flows in at different angles, the corresponding acting forces F300b and F300c can be generated through the action of the stabilizing device 300b and the stabilizing device 300c, and a resultant force fj can be generated through the synergistic action of the two.

In step S300, the magnitude of the resultant force F is approximately equal to the thrust generated by the incoming wind to cause the unit to rotate, so that the resultant force can be formed by adjusting the axial directions of the stabilizing device 300b and the first impeller 340 of the stabilizing device 300c and by the action triangle shown in the figure, thereby counteracting the action force generated by the unit and in the same direction as the incoming wind direction, and further maintaining the relative position of the floating body.

In step S400, after the axial direction of the first impeller 340 of each stabilizer 300 is determined from the resultant force direction, the mechanical arm 310 may be controlled to rotate, and the resultant force fsynthesis may be generated by adjusting the determined axial direction of the first impeller 340 of each stabilizer 300.

In step S500, the driving member 330 is controlled to drive the first impeller 340 to rotate so as to resist the force generated by the incoming wind.

According to the control method of the wind generating set, through the arrangement, incoming wind can be resisted, the probability that the floating fan floating body 200 is displaced under the action of the incoming wind and exceeds the preset sea area range is reduced, and the floating fan floating body 200 can be ensured to be in the preset sea area range even if a mooring structure is not arranged.

In some optional embodiments, the control method provided in the embodiments of the present application, step S300 includes:

when the acting force includes a first acting force parallel to the sea level and a second acting force perpendicular to the sea level, the axial directions of the first impellers 340 of at least two of the plurality of stabilizing devices 300 are disposed to intersect each other and to be parallel to the sea level, and the axial direction of the first impellers 340 of at least one of the stabilizing devices 300 is perpendicular to the sea level.

When the force comprises a circumferential force arranged around the axis of the tower, the axial direction of the first impeller 340 of each stabilizer 300 is arranged crosswise and parallel to the sea level.

The control method provided by the embodiment of the application can reduce the probability of the floating fan floating body 200 moving and pitching by enabling the axial directions of the first impellers 340 of at least two stabilizing devices 300 in the plurality of stabilizing devices 300 to be intersected with each other and parallel to the sea level when the acting force comprises a first acting force parallel to the sea level and a second acting force perpendicular to the sea level, and the axial directions of the first impellers 340 of at least one stabilizing device 300 are perpendicular to the sea level.

By having the axial direction of the first impeller 340 of each stabilizer 300 intersect and be parallel to the sea level when the force comprises a circumferential force disposed about the axis of the tower 10, the probability of the floating wind turbine buoy 200 pitching can be reduced. And moreover, the wind generating set can be ensured to be always in a proper power generation angle with incoming wind, and the power generation efficiency is ensured.

As shown in fig. 11, for example, when the wind generating set encounters a strong wind and is in a power-down state, the azimuth angle of the wind wheel of the wind generating set is fixed, the incoming wind is in a random direction and is in a strong wind state, and at this time, because the wind wheel 40 and the incoming wind V form an included angle, the aerodynamic component of the wind wheel 40 generates a yaw torque relative to the center of the floating fan floating body 200, however, the floating fan floating body 200 has no restoring rigidity and damping relative to the yaw, so that the floating fan floating body 200 can perform a yaw motion in an intervention state without external force, and the load of a corresponding key part such as a blade root position is larger and a part of scenes has a divergence condition.

Based on the synergistic effect of the stabilizing devices 300, the axial direction of the first impellers 340 corresponding to the stabilizing devices 300 is parallel to the connecting body 220 correspondingly connected, so that a torque which is about the floating type fan floating body 200 in the Z direction, namely in the yaw direction is generated, the torque can be controlled to be equal to and opposite to the torque of the aerodynamic force of the wind wheel 40 acting on the center point of the floating body, so that the reactive torque for resisting the yaw motion of the floating type fan floating body 200 is provided, and further, the stabilizing devices 300 can provide a torque which is larger than the torque of the aerodynamic force of the wind wheel acting on the center point of the floating type fan floating body 200, so that the wind wheel faces the wind, the relative position of the wind generating set can be maintained, and further, the load is ensured not to be dispersed and reduced to a lower level.

In some optional embodiments, the control method provided by the embodiments of the present application further includes obtaining a coordinate value of a position of the floating fan float 200 corresponding to the front position relative to the origin position;

when the coordinate values exceed the preset range, determining the axial direction to be adjusted of the first impeller 340 of each stabilizing device 300 according to the coordinate values;

the mechanical arm 310 is driven to rotate, so that the first impeller 340 of each stabilizing device 300 reaches the axial direction to be adjusted;

the first impeller 340 is driven to rotate so that the floating type fan float 200 moves until the coordinate value is within a preset range.

According to the control method provided by the embodiment of the application, under the action of load such as low wind speed and waves, the wind generating set is in a non-power generation state, and at the moment, the mooring-free floating type fan floating body 200 can possibly move in position due to the action of external load. As shown in fig. 12, a schematic view of the sea level area location is shown. Assuming that the initial upper position of the floating type fan float 200 is located at the origin of coordinates, the floating type fan float 200 is displaced to P1, P2, etc. under no external resistance action based on the current load scene. The real-time absolute coordinates of the floating fan floating body 200 and the origin are measurable, for example, displacement marks and sensor layouts are made on the seabed corresponding to the initial upper state of the floating fan floating body 200, sensor arrangements are made on the floating fan floating body 200, the relative coordinates X, Y of the floating wind turbine generator can be determined through measurement between the two sensors, and position restoration can be achieved through interaction of a plurality of stabilizing devices 300.

Further, when the floating fan floating body 200 is in a small displacement relative to the origin, for example, (X2, Y2), (X3, Y3) are all in a preset sea area range, for example, 100m range, the position adjustment of the floating fan floating body 200 can not be performed at this time; further, when the floating wind turbine 200 has boundary constraint of the absolute position of the sea level, such as (X1, Y1), (X4, Y4), and is assumed to be within 100m, when the floating wind turbine is located between two areas, the plurality of stabilizing devices 300 cooperate with each other to provide a force pointing to the origin, so that the position can be restored or moved until the coordinate value thereof is within the preset range.

While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (16)

1. A floating wind turbine floating body disposed in seawater and adapted to support a tower, the floating wind turbine floating body comprising:

The floating body comprises a plurality of floating bodies arranged at intervals and a connecting body connected between the floating bodies, wherein one floating body is used for supporting the tower;

the device comprises a floating body, a plurality of stabilizing devices, wherein the stabilizing devices are arranged on the floating body at intervals, each stabilizing device comprises a mechanical arm, a driving piece, a first impeller and a base, the base is connected with the floating body through the mechanical arms and has a rotation freedom degree relative to the floating body, the base is provided with an inner cavity, a first opening and a second opening, the first opening, the inner cavity and the second opening are communicated with the inner cavity to form a circulation channel of seawater, the first impeller is arranged in the inner cavity, and the driving piece drives the first impeller to rotate and drive the seawater to flow in the circulation channel so as to provide acting force in a preset direction for the floating body and push the floating body to move in the seawater.

2. The floating wind turbine float of claim 1 wherein the mechanical arm includes a first arm connected to the floating body and a second arm connected to the base, the first and second arms being interconnected at one end toward each other and having rotational degrees of freedom, the first and second arms being rotatable relative to each other to adjust the axial direction of the first impeller.

3. The floating fan float of claim 1 wherein along the axis of the first impeller, the base has oppositely disposed top and bottom walls and side walls connected between the top and bottom walls, the top, bottom and side walls enclosing to form the cavity, the first opening is disposed in the bottom wall, the second opening is disposed in one of the top and side walls, the driver and the first impeller are disposed in the cavity, the driver is connected with the base, and the mechanical arm is connected to one of the top and side walls.

4. A floating wind turbine float as claimed in claim 3, wherein the radial dimension of the side wall decreases and then increases in the axial direction of the first impeller.

5. The floating fan float of claim 1 wherein the drive member includes a drive motor, a gearbox and a drive shaft, the input end of the gearbox being connected to the drive motor and the output end being connected to the drive shaft, the first impeller being connected to the drive shaft, the drive motor being connected to the base through a transfer mount.

6. The floating fan float of claim 1 wherein said drive member includes a direct drive motor including a rotor and a stator in a running fit, and a drive shaft coaxially disposed with said direct drive motor and connected to said rotor, said stator being connected to said base by a transfer bracket.

7. The floating wind turbine float of claim 1 wherein the first impeller includes a first hub, a plurality of first blades and a pitch system, the first hub being connected to the drive, the plurality of first blades being spaced circumferentially of the first hub and connected to the first hub by the pitch system to adjust the pitch angle of the first blades.

8. The floating wind turbine float of claim 1 wherein the stabilizing device further includes a rectifying member disposed within the interior cavity and connected to the base, the rectifying member being disposed between the first opening and the first impeller to rectify the flow of the seawater entering from the first opening.

9. The floating fan float of claim 8 wherein said fairing includes a second hub and a plurality of second vanes spaced circumferentially about said second hub and connected thereto, said second vanes having ends facing away from said hub connected to said base with a fairing aperture formed between adjacent two of said second vanes.

10. The floating wind turbine floating body according to any one of claims 1 to 9, wherein a plurality of the floating bodies are arranged at intervals and uniformly centering on a first axis, the connecting body is connected between two adjacent floating bodies, one of the floating bodies is used for being connected with the tower, the number of the stabilizing devices is the same as the number of the floating bodies, and each stabilizing device is connected with one of the floating bodies or the connecting body through the mechanical arm.

11. The floating fan floater according to any one of claims 1 to 9, wherein the number of the floaters is n and includes one first floater and n-1 second floaters, n is equal to or greater than 4, n-1 second floaters are spaced apart from each other and uniformly arranged around the first floater, the connector is provided between each second floater and the first floater and between two adjacent second floaters, the number of the stabilizers is the same as the number of the second floaters, and each stabilizer is connected to one of the second floaters or the connector between two adjacent second floaters through the mechanical arm.

12. A wind turbine generator set, comprising:

a floating wind turbine float according to any one of claims 1 to 11;

the fan main body is arranged on the floating body and comprises a tower frame connected with one floating body, a cabin arranged on the tower frame and an impeller arranged on the cabin.

13. The wind generating set of claim 12, further comprising a controller configured to:

acquiring the wind direction of incoming wind; determining the direction of the acting force required by the floating fan floating body to resist the incoming wind according to the direction of the incoming wind; determining the axial direction of the first impeller to be adjusted of each driving device according to the direction of the acting force; and driving the mechanical arm to rotate so that the first impeller of each driving device reaches the axial direction to be adjusted.

14. A method of controlling a wind power plant according to claim 12 or 13, comprising:

acquiring the wind direction of incoming wind;

determining the direction of the acting force required by the floating fan floating body to resist the incoming wind according to the direction of the incoming wind;

Determining the axial direction of the first impeller to be adjusted of each stabilizing device according to the direction of the acting force;

driving the mechanical arm to rotate so that the first impeller of each stabilizing device reaches the axis direction to be adjusted;

and controlling a driving piece of the stabilizing device to drive the first impeller to rotate.

15. The control method according to claim 14, characterized in that the step of determining the axial direction of the first impeller of each of the stabilizing devices to be adjusted according to the direction of the urging force includes:

when the acting force comprises a first acting force parallel to the sea level and a second acting force perpendicular to the sea level, the axial directions of the first impellers of at least two stabilizing devices in the plurality of stabilizing devices are mutually intersected and arranged parallel to the sea level, and the axial direction of the first impeller of at least one stabilizing device is perpendicular to the sea level direction;

when the force comprises a circumferential force disposed about the axis of the tower, the axial direction of the first impeller of each of the stabilizing devices is disposed intersecting and parallel to the sea level.

16. The control method according to claim 14, characterized in that the control method further comprises:

acquiring a coordinate value of a corresponding front position of the floating fan floating body relative to an original point position;

when the coordinate values exceed a preset range, determining the axial direction of the first impeller to be adjusted of each stabilizing device according to the coordinate values;

driving the mechanical arm to rotate so that the first impeller of each stabilizing device reaches the axis direction to be adjusted;

and driving the first impeller to rotate so as to enable the floating fan floating body to move until the coordinate value is within the preset range.