Wind power generation system

Abstract

The present invention relates to a wind power generation system comprising a floating part with a power generation assembly located radially inward, in which the floating part comprises: a floating body surrounding the power generation assembly having a first air duct; the annular wing is located on the radial outer side of the floating body and is spaced from the floating body, so that a second air channel is formed, resistance generated by the annular wing in the working period is far smaller than lift force generated by the annular wing, and when the absolute attack angle of airflow relative to the axis of the annular wing is not zero, return force generated by the annular wing can drive the floating part to rotate. By means of the innovative design of the wind power generation system, efficient energy conversion and stable power generation in the high altitude, especially in the stratosphere area are achieved, and strong wind resources in the area are fully utilized. Not only is the capturing and conversion efficiency of wind energy optimized, but also the stability and controllability of the system are improved, so that the wind energy can be continuously and stably converted into electric energy even in extreme weather.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation, and in particular to a wind power generation system. Background Art

[0002] With the development of renewable energy technology, wind power generation has been widely used as a clean energy technology. However, traditional wind power generation systems have certain limitations in energy conversion efficiency, stability and adaptability. In order to overcome these problems, the present invention provides a new type of wind power generation system, which achieves higher energy conversion efficiency and more stable operation through an innovative floating part design and a ground anchoring system.

[0003] CN101865074A A duct device for a horizontal axis wind turbine is installed on the horizontal axis wind turbine. The flow field structure around the horizontal axis wind turbine is reasonably arranged by utilizing the exterior design of the inner and outer surfaces of the duct. The device is mainly composed of an inner flow channel arranged inside the duct and an outer flow channel outside the duct. The outer flow channel includes an outer acceleration section, an outer transition section and an outer deceleration section. The inner flow channel includes an inner acceleration section, an inner transition section and an inner deceleration section. Between the inner and outer flow channels, a suction channel connecting the inner and outer flow channels of the duct is provided. The opening size of the suction channel is controlled by a baffle. The suction channels are multiple and evenly distributed in the wall surface between the inner and outer flow channels. The device controls the suction device according to the working condition of the ducted wind turbine. By adjusting the opening size of the suction device, the working condition of the wind blades is improved.

[0004] CN117200520A discloses a ducted generator, comprising a housing and a main generator placed in the housing. The housing is provided with a fan blade assembly connected to the main generator in a transmission manner, and a rectifier and voltage stabilizing module for rectifying and stabilizing the three-phase AC power generated by the main generator into DC power. The housing comprises a hood for accommodating the fan blade assembly, a thin-walled cylinder connected to the rear end of the hood, and an open cylinder connected to the rear end of the thin-walled cylinder. The stator assembly of the main generator is assembled in the thin-walled cylinder. The outer wall of the open cylinder is connected to a raised platform; the inner cavity of the raised platform is connected to the inner cavity of the open cylinder for accommodating the rectifier and voltage stabilizing module. The front end of the thin-walled cylinder is connected to the fan blade assembly via a plurality of reinforcing ribs; one end of the reinforcing rib is connected to the outer wall of the thin-walled cylinder, and the other end is connected to the inner wall of the fan blade assembly. A fixing plate is provided at the upper opening of the raised platform; a socket for external electrical connection is provided on the fixing plate.

[0005] In the prior art, high-altitude wind power generation systems face multiple technical problems, mainly including insufficient stability and low energy conversion efficiency. These problems make it difficult for the system to maintain stable operation in a strong wind environment, which in turn affects the power generation capacity and overall efficiency. In addition, the lack of an effective automatic adjustment mechanism makes it impossible for the system to adapt to changes in wind direction and wind speed in a timely manner, increasing the difficulty of maintenance and monitoring. These technical problems not only limit the effective utilization of high-altitude wind resources, but may also lead to safety hazards of power generation systems under extreme weather conditions, ultimately affecting the overall economy and reliability of renewable energy. Therefore, the field urgently needs to solve these problems to improve the stability and efficiency of high-altitude wind power generation systems.

[0006] In addition, on the one hand, there are differences in understanding among those skilled in the art; on the other hand, the applicant studied a large number of documents and patents when making the present invention, but due to space limitations, not all details and contents are listed in detail. However, this does not mean that the present invention does not have the characteristics of these prior arts. On the contrary, the present invention already has all the characteristics of the prior art, and the applicant reserves the right to add relevant prior art to the background technology. Summary of the invention

[0007] In view of the deficiencies of the prior art, the present invention provides a wind power generation system to solve at least part of the above technical problems.

[0008] The present invention discloses a wind power generation system, which comprises a floating part, wherein the floating part has a power generation component located on the radial inner side, wherein the floating part includes: a floating body, which surrounds the power generation component having a first wind duct on all sides; an annular wing, which is located on the radial outer side of the floating body and is spaced from the floating body, thereby forming a second wind duct, wherein the resistance generated by the annular wing during operation is much smaller than the lift generated by it, wherein when the absolute angle of attack of the airflow relative to the axis of the annular wing is not 0, the restoring force generated by the annular wing can drive the floating part to rotate.

[0009] The layout of the floating part of the wind power generation system of the present invention makes the drag generated by the annular wing relatively small during operation, while the lift is significant, thereby improving the energy conversion efficiency of the system. In addition, when the airflow and the axis of the annular wing have a non-zero absolute angle of attack, the self-centering force generated by the annular wing can effectively drive the floating part to rotate to adjust its posture and optimize wind energy capture. This automatic adjustment mechanism reduces the dependence on external control and enhances the adaptive ability of the system, thereby maintaining stable operation in high-altitude strong wind environments.

[0010] According to a preferred embodiment, the annular wing can be configured as a three-dimensional structure formed by rotating a two-dimensional airfoil around an axis on the relative rear side of the floating body, so that when the absolute angle of attack of the airflow relative to the axis of the annular wing is not 0, the annular wing can generate a righting force at a point of action located on the relatively rear side of the righting center, wherein the righting center is the buoyancy center of the floating part.

[0011] By designing the annular wing as a three-dimensional structure formed by rotating a two-dimensional airfoil around an axis on the relative rear side of the floating body, the wind power generation system of the present invention can generate a significant self-aligning force when the absolute angle of attack between the airflow and the axis of the annular wing is not 0. This structural design allows the annular wing to be positioned rearward relative to the self-aligning center (i.e., the center of gravity or main axis position of the floating part) while generating lift, thereby generating a force behind the self-aligning center to form an effective self-aligning moment. This moment helps to automatically adjust the posture of the floating part so that it can be restored to a more optimal power generation posture in a non-upright state, thereby improving the stability and power generation efficiency of the system.

[0012] According to a preferred embodiment, based on the relative position relationship between the return center and the point of action of the return force, the return force generated by the annular wing can cause the floating part to rotate with the return center as the rotation point, wherein, for the case where the absolute angle of attack is a positive angle of attack, the annular wing can form a return torque that drives the floating part to pitch down; for the case where the absolute angle of attack is a negative angle of attack, the annular wing can form a return torque that drives the floating part to pitch up.

[0013] The wind power generation system of the present invention can form a corresponding self-aligning torque according to the positive and negative conditions of the absolute angle of attack through the self-aligning force generated by the annular wing, thereby adjusting the posture of the floating part. Specifically, when the absolute angle of attack is positive, the self-aligning torque generated by the annular wing drives the floating part to pitch down; and when the absolute angle of attack is negative, the self-aligning torque generated drives the floating part to pitch up. This design enables the floating part to automatically adapt to different wind directions and wind speed conditions, maintain the best power generation posture, and thus improve the stability and power generation efficiency of the system.

[0014] According to a preferred embodiment, the annular wing is connected to the floating body through one or more tail wing, which is arranged on the relatively rear side of the floating body and is configured as a sheet structure with a certain thickness, and can be arranged along the axial direction of the floating body with the wing surface formed by its length and width directions.

[0015] By arranging one or more tail wings on the relative rear side of the floating body, the wind power generation system of the present invention not only enhances the structural stability of the floating part, but also optimizes the aerodynamic performance. The sheet-like structure of the tail wing and the arrangement along the axis of the floating body help reduce airflow interference and improve the aerodynamic efficiency of the system. In addition, the connection method between the tail wing and the floating body makes the structure of the entire floating part more compact, which helps to improve the stability and controllability of the system.

[0016] According to a preferred embodiment, the skin of the floating body is filled with a lightweight gas that is lighter than air, wherein when the bulge of the skin of the floating body is adjusted, the second air duct can be narrowed or widened, thereby changing the wind speed passing through the second air duct.

[0017] The wind power generation system of the present invention achieves precise control of the overall density of the floating part by filling the floating body with a lightweight gas that is lighter than air and adjusting its space share. This design enables the system to rise or fall as needed to adapt to different working heights and environments. At the same time, as the degree of skin bulge is adjusted, the cross-sectional area of ​​the second air duct is changed, thereby adjusting the wind speed passing through the air duct and optimizing the capture and conversion of wind energy. This adjustable design improves the adaptability and flexibility of the system.

[0018] According to a preferred embodiment, the wind power generation system is also configured with a ground anchoring part for cooperating with the floating part, wherein the ground anchoring part includes a mooring unit for stabilizing the floating body and transmitting power and signals, an operation and maintenance center for real-time monitoring and analyzing the operating status of the floating part, and a ground measurement and control center for making decisions based on adjustment tasks and generating operation instructions.

[0019] The wind power generation system of the present invention realizes effective stabilization of the floating part and stable transmission of power and signals by configuring the ground anchoring part. The setting of the mooring unit not only provides physical fixation and stability, but also ensures the reliable transmission of power and signals. The collaborative work of the operation and maintenance center and the ground measurement and control center enables the system to monitor and analyze the operating status of the floating part in real time, make decisions based on the adjustment tasks and generate operation instructions, thereby improving the stability and reliability of the system.

[0020] According to a preferred embodiment, the ground measurement and control center can perform force analysis on the floating part based on the sensor data to determine the control plan, wherein the ground measurement and control center can perform force analysis in a variety of different situations based on the state of the floating part and the difference in absolute angle of attack, and can send control signals to the mooring unit and / or the floating part according to the force analysis results.

[0021] The wind power generation system of the present invention performs force analysis on the floating part through the ground measurement and control center, and can perform force analysis in various different situations according to different operating states and absolute angles of attack. This analysis enables the system to accurately determine the control scheme and send corresponding control signals to the mooring unit and / or the floating part. This intelligent control mechanism improves the system's adaptive ability and stability.

[0022] According to a preferred embodiment, when the floating part is in a relatively upright state and the absolute angle of attack is 0, the horizontal component of the tension generated by the mooring unit controlled by the control signal generated by the ground measurement and control center on the floating part is used to balance the combined force of wind and resistance exerted on the floating part; the vertical component of the tension generated by the mooring unit on the floating part is used to balance the combined force of gravity, buoyancy and lift.

[0023] When the floating part is in a relatively upright state and the absolute angle of attack is 0, the wind power generation system of the present invention controls the pulling direction of the mooring unit and the posture of the floating part through the ground measurement and control center, thereby achieving the force balance of the floating part in the horizontal and vertical directions. This balance enables the floating part to effectively resist wind force and resistance while maintaining a balance with gravity, buoyancy and lift, thereby improving the stability of the system and the power generation efficiency.

[0024] According to a preferred embodiment, when the floating part is in a non-upright state and the absolute angle of attack is not 0, during the rotation of the floating part based on the righting torque generated by the righting force, the lift is transformed from a resultant force having both vertical and horizontal components to a force having only vertical direction, so that the ground measurement and control center dynamically balances the resultant forces in two directions by dividing the nodes.

[0025] When the floating part is in a non-upright state and the absolute angle of attack is not 0, the wind power generation system of the present invention can change the lift from the resultant force with horizontal and vertical components to the force with only vertical direction during the rotation process through the control of the ground measurement and control center. This change enables the ground measurement and control center to dynamically balance the resultant forces in the two directions by dividing the nodes, thereby optimizing the stability and power generation efficiency of the system.

[0026] According to a preferred embodiment, when the floating part is in a relatively upright state and the absolute angle of attack is not 0, during the rotation of the floating part based on the righting torque generated by the righting force, the lift is transformed from a force having only a vertical direction into a resultant force having both a vertical component and a horizontal component, so that the ground measurement and control center dynamically balances the resultant forces in two directions by dividing the nodes.

[0027] When the floating part is in a relatively upright state but the absolute angle of attack is not 0, the wind power generation system of the present invention can transform the lift from a force in the vertical direction only to a force in both the horizontal and vertical directions during the rotation process through the control of the ground measurement and control center. This transformation enables the ground measurement and control center to dynamically balance the resultant forces in the two directions by dividing the nodes, further improving the stability and power generation efficiency of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1It is an axial view of a floating portion of a preferred embodiment provided by the present invention;

[0029] Figure 2 It is a front view of a floating part of a preferred embodiment provided by the present invention;

[0030] Figure 3 It is a schematic diagram of the restoring torque of the floating part of a preferred embodiment provided by the present invention;

[0031] Figure 4 A schematic diagram of the restoring torque of the floating portion of another preferred embodiment provided by the present invention;

[0032] Figure 5 A schematic structural diagram of a wind power generation system according to a preferred embodiment of the present invention;

[0033] Figure 6 A hardware connection diagram of a wind power generation system according to a preferred embodiment of the present invention;

[0034] Figure 7 It is a force analysis diagram of a first force analysis situation in a preferred embodiment provided by the present invention;

[0035] Figure 8 is a force analysis diagram of a second force analysis situation in a preferred embodiment provided by the present invention;

[0036] Fig. 9 It is a force analysis diagram under the third force analysis situation of a preferred embodiment provided by the present invention.

[0037] Reference numerals list

[0038] 100: floating part; 110: floating body; 120: power generation component; 121: first wind duct; 130: annular wing; 131: second wind duct; 140: tail wing; 200: ground anchoring part; 210: mooring unit; 211: main cable; 212: first mooring cable; 213: second mooring cable; 214: mooring point; 220: operation and maintenance center; 230: ground measurement and control center. DETAILED DESCRIPTION

[0039] The following is a detailed description with reference to the accompanying drawings.

[0040] The present invention discloses a wind power generation system, which includes a floating part 100 and a ground anchoring part 200. Preferably, the floating part 100 can be configured to be used to maintain an aerostat in the high altitude, wherein the high altitude can refer to the stratosphere region, especially the bottom of the stratosphere at an altitude of 9000 to 12000 meters. The design goal of the system is to utilize the strong wind resources of the stratosphere to achieve efficient renewable energy generation through a high-altitude aerostat. The floating part 100 is designed to be able to maintain a stable suspension state at the bottom of the stratosphere at an altitude of 9000 to 12000 meters, thereby maximizing the use of high-altitude wind energy and improving energy conversion efficiency and power generation capacity.

[0041] Preferably, if Figure 1 and Figure 2 As shown, the floating part 100 may include a floating body 110 containing a light gas, the density of the light gas is less than that of the air, so that the floating body 110 can float in the air under the action of buoyancy, and in particular can stably float at the bottom of the stratosphere at 9000 to 12000 meters. Preferably, the floating body 110 may be provided with a power generation component 120 for converting high-altitude wind energy into electrical energy, wherein the power generation component 120 may be arranged in the first air duct 121 of the floating body 110 to form a ducted generator. Further, the first air duct 121 can be arranged in a manner of penetrating the floating body 110, so that the front side and the rear side of the floating body 110 can be connected through the first air duct 121, wherein the floating body 110 can distinguish the front side and the rear side by the windward side and the leeward side in the normal working state, the windward side is the front side, and the leeward side is the rear side. Furthermore, when the airflow in the high altitude blows toward the floating body 110, a part of the airflow can flow along the outer side of the floating body 110 toward the rear side of the floating body 110, and another part of the airflow can pass through the first air duct 121 in the floating body 110 to reach the rear side of the floating body 110, and this part of the airflow can drive the generator 120 disposed in the first air duct 121 to rotate when flowing through the power generation component 120, thereby obtaining converted electrical energy.

[0042] Preferably, if Figure 1 and Figure 2As shown, the floating part 100 may also be provided with an annular wing 130, wherein the radial dimension of the annular wing 130 may be greater than the radial dimension of the floating body 110, so that the annular wing 130 can be provided in a manner of being sleeved outside the floating body 110, and a second air duct 131 may be formed between the annular wing 130 and the floating body 110. Further, the floating body 110 and the annular wing 130 are not in direct contact, so that the second air duct 131 may surround the circumference of the floating body 110 outside. Preferably, the floating body 110 and the annular wing 130 may be connected by one or more tail wings 140, and the tail wings 140 may be in a geometric shape with a certain thickness, such as a rectangular, trapezoidal, curved, etc., to optimize aerodynamic performance and reduce airflow interference. Preferably, the tail wing 140 may be a roughly sheet-like structure, one end of which is connected to the outside of the floating body 110, and the other end of which is connected to the inside of the annular wing 130, wherein the length of the tail wing 140 is the distance between the floating body 110 and the annular wing 130 at this position (i.e., the radial dimension of the second air duct 131 at this position), and the thickness of the tail wing 140 is much smaller than the length and width of the tail wing 140. Preferably, the wing surface formed by the length direction and the width direction of the tail wing 140 may be arranged along the axial direction of the floating body 110. Preferably, different numbers of tail wing 140 may affect the aerodynamic performance and maneuverability of the floating part 100, and when the floating part 100 is equipped with a plurality of tail wing 140, they may be arranged in a roughly symmetrical manner, wherein the above-mentioned symmetry may refer to one of a plurality of symmetry modes such as axisymmetry and central symmetry. For example, if a single tail 140 is configured, a tail 140 may be arranged at the rear center of the airborne body 110, and the length thereof is the same as the distance between the airborne body 110 and the annular wing 130; if a symmetrical double tail 140 is configured, a tail 140 is arranged on each side of the airborne body 110, and each is connected to the annular wing 130 to form a symmetrical layout; if a multi-tail 140 is configured, the tail 140 may be evenly distributed around the airborne body 110 to form an annular layout, thereby enhancing the overall stability and aerodynamic efficiency through the symmetrically arranged tails 140. Further preferably, the airborne part 100 of the present invention may be configured with three tails 140, which may all be arranged at the rear side of the airborne body 110, wherein the central tail 140 may be arranged at the central area of ​​the tail of the airborne body 110 facing the ground, and the two side tails 140 may be symmetrically arranged on both sides of the central tail 140. More preferably, the included angles between the three tail wings 140 are equal or approximately equal.

[0043] Preferably, if Figure 3 , Figure 4As shown, based on the setting position of the tail wing 140, the annular wing 130 can be configured as a three-dimensional structure formed by rotating a two-dimensional airfoil around an axis on the relative rear side of the floating body 110, so that the annular wing 130 has unique aerodynamic performance, wherein the axis of the annular wing 130 can be colinear, parallel or intersecting with the axis of the floating body 110. When the absolute angle of attack of the airflow relative to the axis of the annular wing 130 is not 0, the annular wing 130 can effectively capture the airflow and generate significant aerodynamic force. This is because the design of the annular wing 130 allows the airflow to flow through the floating part 100. In addition to the airflow that passes through the first air duct 121 to reach the rear side of the floating body 110, the remaining airflow can flow along the outer side of the floating body 110 to the rear side of the floating body 110. Since the absolute angle of attack is not 0, the airflow flowing along the outer side of the floating body 110 may be subject to different flow resistances, thereby causing the airflow flowing outside the floating body 110 to have different flow velocities. When these airflows reach the rear side of the floating body 110 at corresponding flow velocities, part of the airflow can flow through the second air duct 131 between the annular wing 130 and the floating body 110, and the other part of the airflow can flow from the outer side of the annular wing 130, so that the annular wing 130 can form aerodynamic forces in different directions based on the different flow velocities of the airflow in different directions. In the present invention, the aerodynamic force is called a restoring force.

[0044] For example, Figure 3 As shown in FIG. 1 , if the incoming flow direction is regarded as the horizontal direction and the floating part 100 is in a relatively upward state, the absolute angle of attack is a positive angle of attack. The outer upper region of the floating body 110 is closer to the incoming flow direction than the outer lower region thereof (i.e., the angle is smaller), so that the flow velocity of the airflow in the outer upper region of the floating body 110 is higher than the flow velocity of the airflow in the outer lower region of the floating body 110, so that the airflow flowing through the annular wing 130 at a corresponding flow velocity can exert a lift force with a relatively larger value in an upward direction and a descending force with a relatively smaller value in a downward direction on the annular wing 130, and the resultant force is a restoring force in an upward direction; as shown in FIG. Figure 4 As shown, if the incoming flow direction is regarded as the horizontal direction, the floating part 100 is in a relatively downward state, and the absolute angle of attack is a negative angle of attack. The outer lower area of ​​the floating body 110 is closer to the incoming flow direction than its outer upper area (that is, the angle is smaller), so that the flow rate of the airflow in the outer lower area of ​​the floating body 110 is higher than the flow rate of the airflow in the outer upper area of ​​the floating body 110, so that the airflow flowing through the annular wing 130 at a corresponding flow rate can apply a lift force with a relatively smaller value upward and a relatively larger value downward on the annular wing 130, and the resultant force is a downward restoring force.

[0045] Furthermore, the floating part 100 can use the center of return as the rotation point, and form a return torque through the above-mentioned return force, so that under the action of the return force, the floating part 100 can always have a return tendency, and the closer it is to the return windward state (that is, the absolute angle of attack is 0), the smaller the effect of the return force, and the weaker the return tendency, wherein the return center is usually the buoyancy center of the floating part 100, and the buoyancy center refers to the centroid of the volume of the floating body or the submerged body immersed in the fluid, and for the floating part 100, it is the equivalent point of action of the buoyancy applied by the external atmosphere. Since the annular wing 130 is located at the relatively rear side of the floating body 110, the point of action of the return force generated by it is also located at the relatively rear side of the return center, thereby forming a return torque that drives the floating part 100 to pitch down or up. Specifically, when the absolute angle of attack is positive, a restoring moment may be generated to drive the floating portion 100 to pitch downward; and when the absolute angle of attack is negative, a restoring moment may be generated to drive the floating portion 100 to pitch upward.

[0046] Preferably, when the floating portion 100 reaches the righting state facing the wind, the righting force and the righting moment disappear, so that the floating portion 100 can maintain a relatively upright state, thereby achieving automatic and autonomous adaptive adjustment of the absolute angle of attack of the floating portion 100 to avoid activating additional adjustment components.

[0047] Preferably, the floating body 110 may have a flexible skin for blocking the inner and outer spaces, and the bulge of the skin is related to the pressure or gas amount of the gas filled in the floating body 110, wherein adjusting the bulge of the skin can narrow or widen the second air duct 131, thereby changing the wind speed passing through the second air duct 131, thereby changing the lift. Further, the skin of the floating body 110 may include an outer skin and an inner skin, so that a cavity that can accommodate gas is formed between the outer skin and the inner skin, and the pressure or gas amount of the gas in the cavity is adjusted to achieve the adjustment of the wind speed of the second air duct 131. Preferably, according to the type, pressure and / or gas amount of the gas filled in the cavity, the overall density of the floating body 110 will also be adjusted accordingly, and then the overall density of the floating body 110 can be maintained or changed by adjusting the pressure of the light gas to ensure its working position.

[0048] Preferably, if Figure 5 As shown, the ground anchoring part 200 may include a mooring unit 210, an operation and maintenance center 220 and a ground measurement and control center 230, which can realize the rapid retraction and release of the main cable 211 and track the aerial movement trajectory of the floating part 100, wherein the mooring unit 210 is mainly responsible for the physical fixation and stability of the floating part 100; the main function of the operation and maintenance center 220 is to comprehensively manage and monitor the operation of the floating part 100; the ground measurement and control center 230 mainly focuses on the mission command and data communication of the floating part 100. Figure 6 Shows the hardware connection diagram of the wind power generation system.

[0049] Preferably, the mooring unit 210 is used to stabilize the floating body 110 and effectively transmit power and signals, thereby ensuring the stable operation of the system and the reliable transmission of data and energy. Preferably, when the floating part 100 is in a floating state, the mooring unit 210 can generate a pulling force on the floating part 100. The main function of this pulling force is to maintain the stable position of the floating part 100 to prevent displacement due to wind or other external forces.

[0050] Preferably, the mooring unit 210 disposed on the ground is not only to simply fix the floating part 100, but also the key to ensure its stable operation in a dynamic environment. First, the main components of the mooring unit 210 include a strong main cable 211 and an anchoring device. The main cable 211 is usually made of high-strength synthetic materials and can withstand the self-weight of the floating part 100 and various forces such as external wind force; the anchoring device can take a variety of forms, such as a heavy hammer, a pile foundation or a specially designed fixed structure, which can effectively transfer the load of the floating part 100 to the ground. This design enables the floating part 100 to maintain its position under different meteorological conditions, avoiding displacement due to wind force, airflow changes or other external forces, thereby ensuring its stability when performing specific tasks.

[0051] In actual operation, the mooring unit 210 dynamically adjusts the applied tension by continuously monitoring the state of the floating part 100. When the floating part 100 is suspended in the air, it is affected by various external forces, such as changes in wind speed, disturbances in airflow, etc. These factors may cause the floating part 100 to shift sideways or float up and down. Preferably, the mooring unit 210 can dynamically adjust the applied tension in a timely manner based on the position and posture of the floating part 100 obtained in real time by the high-sensitivity sensor set on the floating part 100, so as to cope with these changes. When the sensor captures the external force acting on the floating part 100, the mooring unit 210 can automatically adjust the length of the first mooring cable 212 and / or the second mooring cable 213, thereby changing the posture of the floating part 100. Preferably, the end of the main cable 211 away from the ground can be connected to the mooring point 214, and the first mooring cable 212 connected to the front side of the floating body 110 and the second mooring cable 213 connected to the rear side of the floating body 110 can be connected to the adjustment mechanism set at the mooring point 214, wherein the adjustment mechanism can be, for example, a winch for retracting and releasing the mooring cable. Preferably, the first mooring cable 212 and / or the second mooring cable 213 can provide a torque for the rotation of the floating part 100, thereby achieving the enhancement, offset or reversal of the force in the direction of the rotation force. This intelligent adjustment mechanism not only improves the operational safety of the floating part 100, but also ensures its accuracy in the execution of tasks.

[0052] In addition, the mooring unit 210 also plays an indispensable role in transmitting power and signals. The equipment in the floating part 100 requires a stable power supply to maintain its operation, and the mooring unit 210 realizes the power connection between the floating part 100 and the ground control center 230 by integrating the power transmission function. At the same time, the transmission of signals is also realized through the wiring of the unit, so that the floating part 100 can feed back data to the ground control system in real time, thus forming a closed-loop control and feedback mechanism. This two-way signal and power transmission not only enhances the functionality of the floating part 100, but also provides support for its autonomous operation in complex environments.

[0053] Preferably, as the nerve center of the ground anchoring unit 200, the operation and maintenance center 220 is not only responsible for real-time monitoring of the operating status of the floating unit 100, but can also be used for data analysis, fault detection and emergency response. Preferably, the operation and maintenance center 220 is equipped with a series of high-performance monitoring equipment and sensors, which can collect various state data of the floating unit 100 in the air in real time, including position, posture, and operating parameters of the power system. The operation and maintenance center 220 obtains information from these sensors to achieve real-time monitoring of the floating unit 100, so that operators can understand the actual operation of the floating unit 100 at any time.

[0054] As data continues to accumulate, the operation and maintenance center 220 can have powerful data analysis capabilities. These data can not only be used for real-time monitoring, but can also be processed through advanced data analysis algorithms to identify potential failure modes and trends. The operation and maintenance center 220 uses machine learning and artificial intelligence technology to analyze historical data to predict various problems that the floating unit 100 may encounter, and reduce the risk of failure and downtime through early warning. This operation and maintenance mode enables the floating unit 100 to achieve more efficient management and ensure its continuity and stability in performing tasks.

[0055] Close collaboration between the operation and maintenance center 220 and the ground measurement and control center 230 is an important part of improving the overall performance of the system. The ground measurement and control center 230 is responsible for global monitoring and the collection of environmental data, while the operation and maintenance center 220 focuses on the status and operation of the floating unit 100. Preferably, the operation and maintenance center 220 can send various status data and analysis results of the floating unit 100 to the ground measurement and control center 230, so that the ground measurement and control center 230 can collect and analyze various real-time data related to the floating unit 100 and generate operation instructions. Furthermore, by establishing an efficient communication network, the ground measurement and control center 230 can integrate and analyze the data obtained by the operation and maintenance center 220 with the environmental data to generate commands and decisions for the overall task. This collaborative working mode enables the floating unit 100 to adjust its strategy according to real-time environmental changes, thereby maximizing operational efficiency and safety. For example, for the floating portion 100 maintained at a high altitude to generate electricity using wind energy, the operation and maintenance center 220 can monitor key indicators such as the rotation speed, power generation, and equipment temperature of the power generation component 120 in real time, and when abnormal conditions such as the rotation speed of the power generation component 120 are detected, an alarm signal can be sent to the ground measurement and control center 230. The ground measurement and control center 230 can perform a fusion analysis of information such as wind speed, power generation, and equipment status, so as to directly adjust the task decision or report it to the operator based on the analysis results.

[0056] In certain circumstances, the ground control center 230 can directly adjust the mission decision based on the preset program, such as regulating the tension applied by the mooring unit 210 to cope with sudden weather changes. For example, when strong winds hit, the ground control center 230 can automatically increase the tension of the mooring unit 210 to enhance the control of the floating unit 100 and prevent it from being out of control due to excessive external forces. This automated adjustment function greatly enhances the adaptability and response capabilities of the floating unit 100 when performing tasks, ensuring that it can work safely and stably in various complex environments.

[0057] Preferably, the ground measurement and control center 230 can perform a force analysis on the floating part 100 based on the sensor data to determine a control scheme, wherein the ground measurement and control center 230 can face a variety of different force analysis situations based on the state of the floating part 100 and the absolute angle of attack. Preferably, when the ground measurement and control center 230 performs force analysis on the floating part 100, it can focus on analyzing the effects of gravity, buoyancy, tension, wind, resistance and lift on the floating part 100, wherein gravity is the downward force on the floating part 100 due to the earth's gravity; buoyancy is the upward supporting force provided by the external atmosphere to the floating part 100; tension is the force applied to the floating part 100 by the mooring unit 210 connected to the floating part 100 through the main cable 211; wind is the thrust generated by the air flow on the floating part 100 in the same direction as the wind direction; resistance is the reverse force in the opposite direction to the wind direction that the floating part 100 is subjected to when it moves relative to the fluid; lift is the force perpendicular to the axis of the floating part 100 generated when the floating part 100 moves relative to the fluid.

[0058] For example, Figure 7 The first force analysis situation is shown, that is, the floating part 100 is in a relatively upright state and the absolute angle of attack is 0. In this situation, the horizontal component of the pulling force generated by the mooring unit 210 on the floating part 100 controlled by the control signal generated by the ground measurement and control center 230 is used to balance the combined force of wind force and resistance on the floating part 100; the vertical component of the pulling force generated by the mooring unit 210 on the floating part 100 is used to balance the combined force of gravity, buoyancy and lift. Further, the ground measurement and control center 230 can give priority to balancing the horizontal force of the floating part 100 to prevent the floating part 100 from being blown away by the wind field, and determine the pulling force generated by the mooring unit 210 on the floating part 100 and the posture of the floating part 100 according to the relative position relationship between the floating part 100 and the mooring unit 210, so as to achieve the force balance of the floating part 100.

[0059] For example, Figure 8The second force analysis situation is shown, that is, the floating part 100 is in a non-upright state and the absolute angle of attack is not 0, especially when the wind direction is horizontal. In this situation, the horizontal component of the pulling force generated by the mooring unit 210 on the floating part 100 controlled by the control signal generated by the ground measurement and control center 230 is used to balance the combined force of the wind force, resistance and lift in the horizontal direction on the floating part 100; the vertical component of the pulling force generated by the mooring unit 210 on the floating part 100 is used to balance the combined force of the gravity, buoyancy and lift in the vertical direction. Different from the first force analysis situation, in the second force analysis situation, the floating part 100 is also subjected to an additional righting force to form a righting moment, so that the direction and / or magnitude of other forces on the floating part 100 are at least partially adjusted during the rotation of the floating part 100 based on the righting moment. Furthermore, during the rotation of the floating part 100 based on the return moment, the direction of the lift force it receives rotates with the rotation of the floating part 100 in a manner that is perpendicular to the axis of the floating part 100, thereby causing the resultant forces of the floating part 100 in the horizontal and vertical directions to change all the time, so that the ground measurement and control center 230 needs to dynamically balance the resultant forces of the floating part 100 in the horizontal and vertical directions. Preferably, the ground measurement and control center 230 can achieve dynamic balance in the following manner: divide the rotation process of the floating part 100 based on the return moment into several nodes, and determine the direction and magnitude of the lift force, as well as the magnitude of the wind force and the resistance force for each node, calculate the magnitude of the tension of each node through the horizontal force balance, and then calculate the magnitude of the buoyancy of each node through the vertical force balance, so as to smooth the tension value and buoyancy value of each node during the entire return rotation process, so as to obtain the tension adjustment scheme of the mooring unit 210 and the attitude adjustment scheme of the floating part 100. It should be noted that: Figure 8 The floating part 100 shown in the figure is in an upward state, while under the same other conditions, the floating part 100 in a downward state also belongs to the second force analysis situation, and its force analysis process is the same as above.

[0060] For example, Fig. 9The third force analysis situation is shown, that is, the floating part 100 is in a relatively upright state and the absolute angle of attack is not 0, especially when the wind direction is non-horizontal. In this situation, the horizontal component of the pulling force generated by the mooring unit 210 on the floating part 100 controlled by the control signal generated by the ground measurement and control center 230 is used to balance the combined force of the horizontal component of the wind force and the horizontal component of the resistance force on the floating part 100; the vertical component of the pulling force generated by the mooring unit 210 on the floating part 100 is used to balance the combined force of gravity, buoyancy, lift, vertical component of the wind force and vertical component of the resistance force. Similar to the second force analysis situation, in the third force analysis situation, the floating part 100 is also subjected to an additional restoring force to form a restoring moment, so that the direction and / or magnitude of other forces on the floating part 100 are at least partially adjusted during the rotation of the floating part 100 based on the restoring moment. Furthermore, during the rotation of the floating part 100 based on the return moment, the direction of the lift force it receives rotates with the rotation of the floating part 100 in a manner that is perpendicular to the axis of the floating part 100, thereby causing the resultant forces of the floating part 100 in the horizontal and vertical directions to change all the time, so that the ground measurement and control center 230 needs to dynamically balance the resultant forces of the floating part 100 in the horizontal and vertical directions. Preferably, the ground measurement and control center 230 can achieve dynamic balance in the following manner: the rotation process of the floating part 100 based on the return moment is divided into a plurality of nodes, and the direction and magnitude of the lift force, as well as the magnitude of the wind force and the resistance force are determined for each node, the magnitude of the tension force of each node is calculated through the horizontal force balance, and the magnitude of the buoyancy force of each node is calculated through the vertical force balance, so that the tension force value and the buoyancy force value of each node in the entire return rotation process are smoothed to obtain the tension adjustment scheme of the mooring unit 210 and the adjustment scheme of the light gas pressure in the floating body 110. However, unlike the second force analysis scenario, in the third force analysis scenario, wind force and drag will affect the resultant force in the vertical direction, and the lift force is transformed from a force with only vertical force to a resultant force with both vertical and horizontal force components. It should be noted that: Fig. 9 What is shown in FIG. 1 is the case where the absolute angle of attack is a positive angle of attack. When other conditions are the same, the absolute angle of attack is a negative angle of attack, which also belongs to the third force analysis case, and the force analysis process is the same as above.

[0061] Preferably, the ground control center 230 may preferentially adjust the tension applied by the mooring unit 210 and / or the buoyancy of the floating part 100. When it is difficult to quickly achieve force balance by adjusting only the above two forces, the lift may be changed by adjusting the bulge of the skin to narrow or widen the second air duct 131, thereby changing the wind speed passing through the second air duct 131. Furthermore, when the lift is changed, the drag may be adjusted synchronously. Therefore, when the ground control center 230 uses the above method to make adjustments, it is necessary to consider the relationship between multiple forces.

[0062] The wind power generation system of the present invention adopts modular production and installation, and improves production efficiency through continuous heat sealing process and controlled lamination process. The floating part 100 adopts rigid-flexible coupling design, combines flexible capsule material and lightweight rigid frame, adopts ducted aerostat capsule compartment type dimensional pressure-maintaining technology, and large truss structure lightweight design to realize flexible-solid coupling structure.

[0063] During the lifting stage, the floating part 100 maintains the external rigidity through pressure control; during the inflation and deflation stage, a motorized enclosure is used to resist the wind. The advantages of the wind power generation system of the present invention include that the unit power motor mass is ≥2kW / kg, the unit power blade mass is ≤1kg / kW, and real-time satellite positioning and communication are adopted in the whole cycle to ensure the stable operation and high-efficiency conversion of the system.

[0064] It should be noted that the above-mentioned specific embodiments are exemplary, and those skilled in the art can come up with various solutions inspired by the disclosure of the present invention, and these solutions also belong to the disclosure scope of the present invention and fall within the protection scope of the present invention. Those skilled in the art should understand that the present invention specification and its drawings are illustrative and do not constitute a limitation of the claims. The scope of protection of the present invention is defined by the claims and their equivalents. The present invention specification contains multiple inventive concepts, such as "preferably" or "according to a preferred embodiment", which means that the corresponding paragraph discloses an independent concept, and the applicant reserves the right to file a divisional application based on each inventive concept. Throughout the text, the features guided by "preferably" are only an optional method and should not be understood as a must-have setting. Therefore, the applicant reserves the right to abandon or delete the relevant preferred features at any time.

Claims

1. A wind power generation system, comprising a floating portion (100), wherein the floating portion (100) has a power generation component (120) located radially inward, wherein: The floating part (100) comprises: A floating body (110) surrounding the power generation assembly (120) having a first air duct (121); The annular wing (130) is located radially outside the floating body (110) and is spaced apart from the floating body (110), thereby forming a second air duct (131), characterized in that: The drag generated by the annular wing (130) during operation is much smaller than the lift it generates, wherein when the absolute angle of attack of the airflow relative to the axis of the annular wing (130) is not 0, the restoring force generated by the annular wing (130) can drive the floating part (100) to rotate.

2. The wind power generation system according to claim 1, characterized in that: The annular wing (130) can be configured as a three-dimensional structure formed by rotating a two-dimensional airfoil around an axis on the relatively rear side of the floating body (110), so that when the absolute angle of attack of the airflow relative to the axis of the annular wing (130) is not 0, the annular wing (130) can generate a restoring force at a point of action located relatively rearward of a restoring center, wherein the restoring center is the buoyancy center of the floating part (100).

3. The wind power generation system according to claim 1 or 2, characterized in that: Based on the relative positional relationship between the return center and the point of action of the return force, the return force generated by the annular wing (130) can cause the floating part (100) to rotate with the return center as the rotation point, wherein, when the absolute angle of attack is a positive angle of attack, the annular wing (130) can form a return moment that drives the floating part (100) to pitch down; when the absolute angle of attack is a negative angle of attack, the annular wing (130) can form a return moment that drives the floating part (100) to pitch up.

4. The wind power generation system according to any one of claims 1 to 3, characterized in that: The annular wing (130) is connected to the floating body (110) through one or more tail wings (140). The tail wing (140) is arranged on the relatively rear side of the floating body (110) and is configured as a sheet structure with a certain thickness. The wing surface formed by its length direction and width direction can be arranged along the axial direction of the floating body (110).

5. The wind power generation system according to any one of claims 1 to 4, characterized in that: The skin of the floating body (110) is filled with a lightweight gas that is lighter than air, wherein when the degree of bulging of the skin of the floating body (110) is adjusted, the second air duct (131) can be narrowed or widened, thereby changing the wind speed passing through the second air duct (131).

6. The wind power generation system according to any one of claims 1 to 5, characterized in that: The wind power generation system is also equipped with a ground anchoring part (200) for cooperating with the floating part (100), wherein the ground anchoring part (200) includes a mooring unit (210) for stabilizing the floating body (110) and transmitting power and signals, an operation and maintenance center (220) for real-time monitoring and analyzing the operating status of the floating part (100), and a ground measurement and control center (230) for making decisions based on adjustment tasks and generating operation instructions.

7. The wind power generation system according to any one of claims 1 to 6, characterized in that: The ground measurement and control center (230) can perform a force analysis on the floating part (100) based on the sensor data to determine a control scheme, wherein the ground measurement and control center (230) can perform force analysis in a variety of different situations based on the state of the floating part (100) and the difference in absolute angle of attack, and can send a control signal to the mooring unit (210) and / or the floating part (100) according to the force analysis results.

8. The wind power generation system according to any one of claims 1 to 7, characterized in that: When the floating part (100) is in a relatively upright state and the absolute angle of attack is 0, the component of the pulling force in the horizontal direction generated by the mooring unit (210) on the floating part (100) controlled by the control signal generated by the ground measurement and control center (230) is used to balance the combined force of wind force and resistance exerted on the floating part (100); the component of the pulling force in the vertical direction generated by the mooring unit (210) on the floating part (100) is used to balance the combined force of gravity, buoyancy and lift.

9. The wind power generation system according to any one of claims 1 to 8, characterized in that: When the floating part (100) is in a non-upright state and the absolute angle of attack is not 0, during the rotation of the floating part (100) based on the self-aligning torque generated by the self-aligning force, the lift is transformed from a resultant force having both vertical and horizontal components to a force having only a vertical component, so that the ground measurement and control center (230) dynamically balances the resultant forces in the two directions by means of splitting nodes.

10. The wind power generation system according to any one of claims 1 to 9, characterized in that: When the floating part (100) is in a relatively upright state and the absolute angle of attack is not 0, during the rotation of the floating part (100) based on the self-centering torque generated by the self-centering force, the lift is transformed from a force having only a vertical direction into a resultant force having both a vertical component force and a horizontal component force, so that the ground measurement and control center (230) dynamically balances the resultant forces in the two directions by means of splitting nodes.

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