A wind power system

Abstract

The present application relates to a kind of wind power generation systems, it includes floating part, floating part with the power generation component in the radial inner side, wherein, floating part includes: floating main body, it surrounds the power generation component with first wind channel in four around;Annular wing, it is located at the radial outer side of floating main body and there is interval with floating main body, thereby forming second wind channel, the resistance generated by annular wing during operation is far less than the lift generated by annular wing, wherein, when the absolute angle of attack of airflow relative to the axis of annular wing is not 0, the righting force generated by annular wing can drive floating part to rotate.The present application realizes the efficient energy conversion and stable power generation in high altitude, especially in stratosphere region by innovative wind power generation system design, makes full use of the strong wind resources in this region.Not only optimize the capture and conversion efficiency of wind energy, but also improve the stability and maneuverability of system, so that even in extreme weather, wind energy can be converted into electric energy continuously and stably.

Description

Technical Field

[0001] This invention relates to the field of wind power generation technology, and more particularly to a wind power generation system. Background Technology

[0002] With the development of renewable energy technologies, wind power has been widely used as a clean energy technology. However, traditional wind power systems have certain limitations in terms of energy conversion efficiency, stability, and adaptability. To overcome these problems, this invention provides a novel wind power system that achieves higher energy conversion efficiency and more stable operation through an innovative floating section design and ground mooring system.

[0003] CN101865074A discloses a ducted device for a horizontal axis wind turbine, which is installed on a horizontal axis wind turbine. Utilizing the design of the inner and outer surfaces of the duct, the flow field structure around the wind turbine is rationally arranged. The device mainly consists of an inner flow channel inside the duct and an outer flow channel outside the duct. The outer flow channel includes an external acceleration section, an external transition section, and an external deceleration section. The inner flow channel includes an internal acceleration section, an internal transition section, and an internal deceleration section. Between the inner and outer flow channels, there is a suction channel connecting the inner and outer flow channels. The opening size of the suction channel is controlled by baffles. Multiple suction channels are evenly distributed within the wall between the inner and outer flow channels. This device controls the suction device according to the operating conditions of the ducted wind turbine, thereby improving the working condition of the wind turbine blades by adjusting the opening size of the suction device.

[0004] CN117200520A discloses a ducted generator, including a housing and a main generator housed within the housing. The housing contains a fan blade assembly driven by the main generator and a rectifier and voltage regulator module for rectifying and regulating the three-phase AC power generated by the main generator into DC power. The housing includes a shroud for housing the fan blade assembly, a thin-walled cylinder connected to the rear end of the shroud, and an open cylinder connected to the rear end of the thin-walled cylinder. The stator assembly of the main generator is assembled inside the thin-walled cylinder. A riser platform is connected to the outer wall of the open cylinder; the inner cavity of the riser platform is connected to the inner cavity of the open cylinder to accommodate the rectifier and voltage regulator module. The front end of the thin-walled cylinder is connected to the shroud via multiple reinforcing ribs; one end of each 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 shroud. A fixing plate is provided at the upper opening of the riser platform; the fixing plate has a socket for external electrical connection.

[0005] Existing high-altitude wind power systems face several technical challenges, primarily including insufficient stability and low energy conversion efficiency. These issues make it difficult for the system to maintain stable operation in strong wind environments, thus affecting power generation capacity and overall efficiency. Furthermore, the lack of effective automatic adjustment mechanisms prevents the system from adapting to changing wind direction and 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 in power generation systems under extreme weather conditions, ultimately impacting the overall economic viability and reliability of renewable energy. Therefore, it is urgent to address these issues to improve the stability and efficiency of high-altitude wind power systems.

[0006] Furthermore, 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 this invention, but due to space limitations, not all details and contents were listed in detail. However, this does not mean that the present invention does not possess the features of these prior art. On the contrary, the present invention already possesses all the features of the prior art, and the applicant reserves the right to add relevant prior art to the background art. Summary of the Invention

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

[0008] This invention discloses a wind power generation system comprising a floating section with a power generation component located radially inward. The floating section includes: a floating main body surrounding the power generation component having a first air duct; and an annular wing located radially outward from the floating main body and spaced apart from it, thereby forming a second air duct. The drag generated by the annular wing during operation is much smaller than the lift it generates. When the absolute angle of attack of the airflow relative to the axis of the annular wing is not zero, the restoring force generated by the annular wing can drive the floating section to rotate.

[0009] The arrangement of the floating section in the wind power generation system of this invention results in relatively low drag and significant lift generated by the annular wing during operation, thereby improving the system's energy conversion efficiency. Furthermore, when the airflow has a non-zero absolute angle of attack with the axis of the annular wing, the restoring force generated by the annular wing can effectively drive the floating section to rotate, adjusting its attitude and optimizing wind energy capture. This automatic adjustment mechanism reduces reliance on external control, enhances the system's adaptability, and thus maintains 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 about an axis on the relative rear side of the air-floating body, such 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 restoring force at the point of action on the relative rear side of the restoring center, wherein the restoring center is the buoyancy center of the air-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 relatively rear side of the floating main body, the wind power generation system of this invention can generate significant self-aligning force when the absolute angle of attack between the airflow and the axis of the annular wing is not zero. This structural design allows the annular wing to generate lift while its position is rearward relative to the self-aligning center (i.e., the center of gravity or main axis of the floating part), thereby generating a force behind the self-aligning center and forming an effective self-aligning torque. This torque helps to automatically adjust the attitude of the floating part, enabling it to recover to a better power generation attitude when not in an upright state, thus improving the stability and power generation efficiency of the system.

[0012] According to a preferred embodiment, based on the relative positional relationship between the center of return and the point of application of the return force, the return force generated by the annular wing can cause the airborne part to rotate around the center of return. Specifically, when the absolute angle of attack is positive, the annular wing can generate a return torque that drives the airborne part to pitch down; when the absolute angle of attack is negative, the annular wing can generate a return torque that drives the airborne part to pitch up.

[0013] The wind power generation system of this invention utilizes the restoring force generated by the annular wing to create a corresponding restoring torque based on the sign of the absolute angle of attack, thereby adjusting the attitude of the floating section. Specifically, when the absolute angle of attack is positive, the restoring torque generated by the annular wing drives the floating section downwards; while when the absolute angle of attack is negative, the generated restoring torque drives the floating section upwards. This design allows the floating section to automatically adapt to different wind directions and speeds, maintaining the optimal power generation attitude, thus improving the system's stability and power generation efficiency.

[0014] According to a preferred embodiment, the annular wing is connected to the airborne main body via one or more tail wings. The tail wings are located on the opposite rear side of the airborne main body and are configured as a sheet-like structure with a certain thickness. The wing surface formed by its length and width directions is arranged along the axial direction of the airborne main body.

[0015] By providing one or more tail fins on the relatively rear side of the floating body, the wind power generation system of the present invention not only enhances the structural stability of the floating section but also optimizes its aerodynamic performance. The sheet-like structure of the tail fins and their arrangement along the axis of the floating body help reduce airflow interference and improve the aerodynamic efficiency of the system. Furthermore, the connection method between the tail fins and the floating body makes the entire floating section more compact, which helps improve the stability and maneuverability of the system.

[0016] According to a preferred embodiment, the skin of the levitation body is filled with a light gas lighter than air, wherein when the degree of bulging of the skin of the levitation 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 this invention achieves precise control over the overall density of the floating section by filling the floating body with a lightweight gas lighter than air and adjusting its spatial proportion. This design allows the system to rise or fall as needed to adapt to different operating heights and environments. Simultaneously, by adjusting the degree of skin bulge, the cross-sectional area of ​​the second air duct can be changed, thereby regulating the wind speed passing through the duct and optimizing wind energy capture and conversion. This adjustable design improves the system's adaptability and flexibility.

[0018] According to a preferred embodiment, the wind power generation system is further configured with a ground mooring unit for cooperation with the air-floating unit. The ground mooring unit includes a mooring unit for stabilizing the air-floating main body and transmitting power and signals, an operation and maintenance center for real-time monitoring and analysis of the operating status of the air-floating unit, and a ground measurement and control center for making adjustment decisions and generating operation instructions.

[0019] The wind power generation system of this invention achieves effective stabilization of the airborne unit and stable transmission of power and signals by configuring a ground-based mooring unit. The mooring unit not only provides physical fixation and stability but also ensures reliable power and signal transmission. The collaborative work between the operation and maintenance center and the ground-based telemetry and control center enables the system to monitor and analyze the operating status of the airborne unit in real time, make adjustment decisions based on the task requirements, and generate operating instructions, thereby improving the system's stability and reliability.

[0020] According to a preferred embodiment, the ground control center can perform stress analysis on the airborne part based on sensor data to determine the control scheme. The ground control center can perform stress analysis under various conditions based on the state of the airborne part and the different absolute angles of attack, and can issue control signals to the mooring unit and / or the airborne part according to the stress analysis results.

[0021] The wind power generation system of this invention performs stress analysis on the afloat unit through a ground-based monitoring and control center. This analysis allows the system to perform stress analyses under various conditions based on different operating states and absolute angles of attack. This analysis enables the system to accurately determine control schemes and issue corresponding control signals to the mooring unit and / or the afloat unit. This intelligent control mechanism improves the system's adaptability 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 pulling force generated by the mooring unit on the floating part, which is controlled by the control signal generated by the ground control center, is used to balance the resultant force of wind force and drag on the floating part; the vertical component of the pulling force generated by the mooring unit on the floating part is used to balance the resultant force of gravity, buoyancy and lift.

[0023] When the floating section is in a relatively upright position with an absolute angle of attack of 0, the wind power generation system of this invention controls the direction of the mooring unit's pull and the attitude of the floating section through the ground control center, achieving force balance of the floating section in the horizontal and vertical directions. This balance enables the floating section to effectively resist wind force and drag, while maintaining balance with gravity, buoyancy, and lift, thereby improving the system's stability and power generation efficiency.

[0024] According to a preferred embodiment, when the buoyant part is not upright and the absolute angle of attack is not 0, during the rotation of the buoyant part based on the normalizing torque generated by the normalizing force, the lift force changes from a resultant force with both vertical and horizontal components to a force with only vertical components, so that the ground control center can dynamically balance the resultant force in the two directions by dividing the nodes.

[0025] When the floating part is not upright and the absolute angle of attack is not zero, the wind power generation system of this invention, under the control of the ground control center, can transform the lift force during rotation from a resultant force with horizontal and vertical components to a force with only vertical components. This transformation allows the ground control center to dynamically balance the resultant force in both directions by dividing the nodes, thereby optimizing the system's stability and power generation efficiency.

[0026] According to a preferred embodiment, when the buoyant part is in a relatively upright state and the absolute angle of attack is not 0, during the rotation of the buoyant part based on the normalizing torque generated by the normalizing force, the lift force changes from having only a vertical force to a resultant force having both a vertical component and a horizontal component, so that the ground control center can dynamically balance the resultant force in the 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 zero, the wind power generation system of the present invention, under the control of the ground control center, can transform the lift force during rotation from having only a vertical force to having components in both the horizontal and vertical directions. This transformation allows the ground control center to dynamically balance the resultant force in both directions by dividing the nodes, further improving the system's stability and power generation efficiency. Attached Figure Description

[0028] Figure 1This is an axial view of the floating part according to a preferred embodiment of the present invention;

[0029] Figure 2 This is a front view of the floating section according to a preferred embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the restoring torque of the levitation part according to a preferred embodiment of the present invention;

[0031] Figure 4 A schematic diagram of the restoring torque of the levitation part in another preferred embodiment of the present invention;

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

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

[0034] Figure 7 This is a force analysis diagram under the first force analysis scenario of a preferred embodiment of the present invention;

[0035] Figure 8 This is a force analysis diagram under a second force analysis scenario according to a preferred embodiment of the present invention;

[0036] Figure 9 This is a force analysis diagram under the third force analysis scenario of a preferred embodiment of the present invention.

[0037] List of reference numerals

[0038] 100: Aerial section; 110: Aerial main body; 120: Power generation component; 121: First air duct; 130: Annular wing; 131: Second air duct; 140: Tail fin; 200: Ground anchorage section; 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 Implementation

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

[0040] This invention discloses a wind power generation system, comprising an aerobatic unit 100 and a ground-mounted anchoring unit 200. Preferably, the aerobatic unit 100 is configured to maintain its position at high altitudes, where high altitude refers to the stratosphere, particularly the lower stratosphere at an altitude of 9,000–12,000 meters. The system is designed to utilize strong stratospheric wind resources to achieve efficient renewable energy power generation through the high-altitude aerobatic unit. The aerobatic unit 100 is designed to maintain a stable suspended state at the lower stratosphere at an altitude of 9,000–12,000 meters, thereby maximizing the utilization of high-altitude wind energy and improving energy conversion efficiency and power generation capacity.

[0041] Preferably, such as Figure 1 and Figure 2 As shown, the buoyancy unit 100 may include a buoyancy body 110 containing a light gas with a density less than air, so that the buoyancy body 110 can float at high altitudes under the action of buoyancy, and in particular, can float stably at the bottom of the stratosphere at an altitude of 9,000 to 12,000 meters. Preferably, the buoyancy 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 disposed within a first wind duct 121 of the buoyancy body 110 to form a ducted generator. Further, the first wind duct 121 may be provided in a manner that penetrates through the buoyancy body 110, so that the front and rear sides of the buoyancy body 110 can be connected through the first wind duct 121, wherein the buoyancy body 110 can be distinguished by its windward side and leeward side in the normal operating state, with the windward side being the front side and the leeward side being the rear side. Furthermore, when the airflow in the high altitude blows towards the floating body 110, part of the airflow can flow along the outside of the floating body 110 to the rear side of the floating body 110, and another part of the airflow can reach the rear side of the floating body 110 through the first air duct 121 inside the floating body 110. When this part of the airflow flows through the power generation component 120 installed in the first air duct 121, it can drive its generator to rotate, thereby obtaining the converted electrical energy.

[0042] Preferably, such as Figure 1 and Figure 2As shown, the aerodynamic part 100 may also be provided with an annular wing 130, wherein the radial dimension of the annular wing 130 may be larger than the radial dimension of the aerodynamic body 110, so that the annular wing 130 can be disposed outside the aerodynamic body 110, and a second air duct 131 may be formed between the annular wing 130 and the aerodynamic body 110 at intervals. Further, the aerodynamic body 110 and the annular wing 130 are not in direct contact, so that the second air duct 131 can surround the aerodynamic body 110 circumferentially. Preferably, the aerodynamic body 110 and the annular wing 130 may be connected by one or more tail fins 140, which may have a certain thickness and a geometric shape, such as rectangular, trapezoidal, or curved, to optimize aerodynamic performance and reduce airflow interference. Preferably, the tail fin 140 can be generally sheet-like, with one end connected to the outer side of the aerodynamic body 110 and the other end connected to the inner side of the annular wing 130. The length of the tail fin 140 is the distance between the aerodynamic body 110 and the annular wing 130 at that position (i.e., the radial dimension of the second air duct 131 at that position), and the thickness of the tail fin 140 is much smaller than its length and width. Preferably, the wing surface formed by the length and width directions of the tail fin 140 can be arranged along the axial direction of the aerodynamic body 110. Preferably, different numbers of tail fins 140 affect the aerodynamic performance and maneuverability of the aerodynamic unit 100. When multiple tail fins 140 are configured in the aerodynamic unit 100, they can be arranged in a generally symmetrical manner. This symmetry can refer to one of several symmetry types, such as axial symmetry or central symmetry. For example, if a single tail fin 140 is configured, a tail fin 140 can be provided at the center of the rear side of the floating body 110, with a length equal to the distance between the floating body 110 and the annular wing 130; if a symmetrical double tail fin 140 configuration is used, a tail fin 140 is provided on each side of the floating body 110, respectively connected to the annular wing 130, to form a symmetrical layout; if a multi-tail fin 140 configuration is used, the tail fins 140 can be evenly distributed around the floating body 110 to form a ring layout, thereby enhancing the overall stability and aerodynamic efficiency through the symmetrically arranged tail fins 140. More preferably, the floating part 100 of the present invention can be configured with three tail fins 140, all of which can be provided on the rear side of the floating body 110, wherein the central tail fin 140 can be provided in the central region of the tail of the floating body 110 facing the ground, and the two side tail fins 140 can be symmetrically arranged on both sides of the central tail fin 140. More preferably, the included angles between the three tail fins 140 are equal or approximately equal.

[0043] Preferably, such as Figure 3 , Figure 4As shown, based on the location of the tail fin 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 air-supporting body 110, so that the annular wing 130 has unique aerodynamic performance. The axis of the annular wing 130 can be collinear, parallel, or intersecting with the axis of the air-supporting body 110. When the absolute angle of attack of the airflow relative to the axis of the annular wing 130 is not zero, 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, when passing through the floating section 100, to flow along the outer side of the floating body 110 to the rear side, except for the airflow that reaches the rear side of the floating body 110 through the first air duct 121. Since the absolute angle of attack is not zero, the airflow flowing along the outer side of the floating body 110 experiences different flow resistances, resulting in different flow velocities. When these airflows reach the rear side of the floating body 110 at their corresponding velocities, some airflow can flow through the second air duct 131 between the annular wing 130 and the floating body 110, while other airflow can flow through the outer side of the annular wing 130. This allows the annular wing 130 to generate aerodynamic force in different directions based on the different flow velocities of the airflow in different orientations. In this invention, this aerodynamic force is referred to as the corrective force.

[0044] For example, such as Figure 3 As shown, if the incoming flow direction is considered horizontal and the air-supported part 100 is in a relatively upward-tilting state, the absolute angle of attack is positive. The upper outer region of the air-supported body 110 is closer to the incoming flow direction (i.e., the angle is smaller) than its lower outer region. This results in the airflow velocity in the upper outer region of the air-supported body 110 being higher than the airflow velocity in the lower outer region. Consequently, the airflow passing through the annular wing 130 at the corresponding velocity can exert a relatively larger upward lift and a relatively smaller downward drop on the annular wing 130, the resultant of which is an upward restoring force. Figure 4 As shown, if the incoming flow direction is considered horizontal and the floating part 100 is in a relatively downward state, the absolute angle of attack is negative. The lower outer region of the floating body 110 is closer to the incoming flow direction (i.e., the angle is smaller) than the upper outer region. This results in the airflow velocity in the lower outer region of the floating body 110 being higher than the airflow velocity in the upper outer region of the floating body 110. Consequently, the airflow passing through the annular wing 130 at the corresponding velocity can exert an upward lift force with a relatively smaller value and a downward drop force with a relatively larger value on the annular wing 130. The resultant force is a downward restoring force.

[0045] Furthermore, the buoyancy section 100 can rotate around the center of return, generating a return torque through the aforementioned return force. This ensures that the buoyancy section 100 always tends to return to center under the action of the return force. The closer it is to the return-to-center windward state (i.e., an absolute angle of attack of 0), the smaller the effect of the return force and the weaker the return tendency. The center of return is typically the center of buoyancy of the buoyancy section 100, which refers to the centroid of the volume of the submerged part of the float or submersible. For the buoyancy section 100, this is the equivalent point of application of the buoyancy force exerted by the external atmosphere. Since the annular wing 130 is located relatively behind the buoyancy body 110, the point of application of the return force it generates is also located relatively behind the center of return, thus forming a return torque that drives the buoyancy section 100 to pitch down or up. Specifically, when the absolute angle of attack is positive, a normalizing torque can be generated to drive the floating part 100 downward; when the absolute angle of attack is negative, a normalizing torque can be generated to drive the floating part 100 upward.

[0046] Preferably, when the floating part 100 reaches the righting and windward state, the righting force and righting torque disappear, so that the floating part 100 can maintain a relatively upright state, thereby realizing the automatic and autonomous adaptive adjustment of the absolute angle of attack of the floating part 100 to avoid the need to use additional adjustment components.

[0047] Preferably, the buoyancy body 110 may have a flexible skin for isolating the inner and outer spaces. The degree of bulging of this skin is related to the pressure or amount of gas filling the buoyancy body 110. Adjusting the degree of bulging of the skin can narrow or widen the second air duct 131, thereby changing the wind speed through the second air duct 131 and thus changing the lift. Further, the skin of the buoyancy body 110 may include an outer skin and an inner skin, thereby forming a cavity between the outer skin and the inner skin to accommodate gas. By adjusting the pressure or amount of gas in this cavity, the wind speed of the second air duct 131 can be adjusted. Preferably, the overall density of the buoyancy body 110 is also adjusted according to the type, pressure, and / or amount of gas filled into the cavity. Therefore, the overall density of the buoyancy body 110 can be maintained or changed by adjusting the pressure of the lightweight gas to ensure its working position.

[0048] Preferably, such as Figure 5 As shown, the ground anchoring unit 200 may include a mooring unit 210, an operation and maintenance center 220, and a ground telemetry and control center 230. It can realize the rapid deployment and retrieval of the main cable 211 and track the aerial movement trajectory of the airborne unit 100. The mooring unit 210 is mainly responsible for the physical fixation and stabilization of the airborne unit 100. The main function of the operation and maintenance center 220 is to comprehensively manage and monitor the operation of the airborne unit 100. The ground telemetry and control center 230 mainly focuses on the mission command and data communication of the airborne unit 100. Figure 6 The hardware connection diagram of the wind power generation system is shown.

[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 maintained in a floating state, the mooring unit 210 can generate a pulling force on the floating part 100. The main purpose of this pulling force is to maintain the stable position of the floating part 100 and prevent displacement due to wind or other external forces.

[0050] Preferably, the mooring unit 210, located on the ground, is not merely a simple fixation of the floating section 100, but also crucial for ensuring its stable operation in dynamic environments. Firstly, the main components of the mooring unit 210 include a robust main cable 211 and an anchoring device. The main cable 211 is typically made of high-strength composite material, capable of withstanding the weight of the floating section 100 and various forces such as external wind forces. The anchoring device can take various forms, such as a counterweight, pile foundation, or a specially designed fixing structure, effectively transferring the load of the floating section 100 to the ground. This design allows the floating section 100 to maintain its position under different weather conditions, preventing displacement due to wind, airflow changes, or other external forces, thereby ensuring its stability when performing specific tasks.

[0051] In actual operation, the mooring unit 210 continuously monitors the state of the buoyancy section 100 and dynamically adjusts the applied tension. When the buoyancy section 100 is suspended in the air, it is affected by various external forces, such as changes in wind speed and airflow disturbances, which may cause the buoyancy section 100 to shift laterally 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 attitude of the buoyancy section 100, which is acquired in real time by a high-sensitivity sensor installed on the buoyancy section 100, in order to cope with these changes. When the sensor detects an external force acting on the buoyancy section 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 attitude of the buoyancy section 100. Preferably, the end of the main cable 211 away from the ground can be connected to the mooring point 214. The first mooring cable 212 connected to the front of the buoyancy body 110 and the second mooring cable 213 connected to the rear of the buoyancy body 110 can both be connected to an adjustment mechanism located at the mooring point 214. This adjustment mechanism can be, for example, a winch, for retracting and extending the mooring cables. Preferably, the first mooring cable 212 and / or the second mooring cable 213 can provide torque for the rotation of the buoyancy unit 100, thereby enhancing, canceling, or reversing the force in the direction of rotation. This intelligent adjustment mechanism not only improves the operational safety of the buoyancy unit 100 but also ensures its accuracy during mission execution.

[0052] Furthermore, the mooring unit 210 plays an indispensable role in transmitting power and signals. The equipment within the aerostat 100 requires a stable power supply to maintain its operation, and the mooring unit 210, through its integrated power transmission function, enables the power connection between the aerostat 100 and the ground control center 230. Simultaneously, signal transmission is also achieved through the wiring of this unit, allowing the aerostat 100 to feed data back to the ground control system in real time, thus forming a closed-loop control and feedback mechanism. This bidirectional signal and power transmission not only enhances the functionality of the aerostat 100 but also supports 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 operational status of the airship unit 100, but also for data analysis, fault detection, and emergency response. Preferably, the operation and maintenance center 220 is equipped with a series of high-performance monitoring devices and sensors, which can collect various status data of the airship unit 100 in the air in real time, including position, attitude, and operating parameters of the power system. Through the information obtained by these sensors, the operation and maintenance center 220 achieves real-time monitoring of the airship unit 100, enabling operators to understand the actual operating status of the airship unit 100 at any time.

[0054] With the continuous accumulation of data, the Operations Center 220 possesses powerful data analysis capabilities. This data can not only be used for real-time monitoring but also processed through advanced data analysis algorithms to identify potential failure modes and trends. The Operations Center 220 uses machine learning and artificial intelligence technologies to analyze historical data, thereby predicting various problems that the Aerial Floating Unit 100 may encounter, reducing failure risks and downtime through early warnings. This operational model enables more efficient management of the Aerial Floating Unit 100, ensuring its continuity and stability during task execution.

[0055] Close collaboration between the Operations and Maintenance Center 220 and the Ground Control Center 230 is crucial for improving the overall system performance. The Ground Control Center 230 is responsible for global monitoring and environmental data collection, while the Operations and Maintenance Center 220 focuses on the status and operation of the aerostat unit 100. Preferably, the Operations and Maintenance Center 220 can send various status data and analysis results of the aerostat unit 100 to the Ground Control Center 230, enabling the Ground Control Center 230 to collect and analyze various real-time data related to the aerostat unit 100 and generate operational commands. Furthermore, by establishing an efficient communication network, the Ground Control Center 230 can fuse and analyze the data acquired by the Operations and Maintenance Center 220 with environmental data to generate command and decision-making for the overall mission. This collaborative working mode allows the aerostat unit 100 to adjust its strategies according to real-time environmental changes, maximizing operational efficiency and safety. For example, for the floating unit 100 that maintains 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. 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 control center 230. The ground control center 230 can perform integrated analysis on information such as wind speed, power generation, and equipment status, so as to directly adjust the mission decision or report to the operator based on the analysis results.

[0056] Under specific circumstances, the ground control center 230 can directly adjust mission decisions based on preset programs, such as regulating the pulling force applied to the mooring unit 210, to cope with sudden weather changes. For example, during strong winds, the ground control center 230 can automatically increase the pulling force of the mooring unit 210 to enhance control over the aerostat 100 and prevent it from becoming uncontrollable due to excessive external forces. This automated adjustment function greatly enhances the adaptability and responsiveness of the aerostat 100 during mission execution, ensuring its safe and stable operation in various complex environments.

[0057] Preferably, the ground control center 230 can perform force analysis on the airborne part 100 based on sensor data to determine the control scheme. Depending on the state and absolute angle of attack of the airborne part 100, the ground control center 230 can handle a variety of different force analysis scenarios. Preferably, when performing force analysis on the airborne section 100, the ground control center 230 can focus on analyzing the effects of gravity, buoyancy, tension, wind force, drag, and lift on the airborne section 100. Among these, gravity is the downward force exerted on the airborne section 100 by the Earth's gravity; buoyancy is the upward support force provided to the airborne section 100 by the external atmosphere; tension is the force exerted on the airborne section 100 by the mooring unit 210 connected to the airborne section 100 through the main cable 211; wind force is the thrust generated by airflow on the airborne section 100 in the same direction as the wind; drag is the opposite force exerted on the airborne section 100 in the opposite direction to the wind when it moves relative to the fluid; and lift is the force perpendicular to the axis of the airborne section 100 when it moves relative to the fluid.

[0058] For example, Figure 7 The first force analysis scenario is illustrated, where the afloat 100 is in a relatively upright state with an absolute angle of attack of 0. In this scenario, the horizontal component of the pull force exerted by the mooring unit 210 on the afloat 100, controlled by the control signal generated by the ground control center 230, is used to balance the resultant force of wind force and drag on the afloat 100. The vertical component of the pull force exerted by the mooring unit 210 on the afloat 100 is used to balance the resultant force of gravity, buoyancy, and lift. Furthermore, the ground control center 230 can prioritize balancing the forces on the afloat 100 in the horizontal direction to prevent the afloat 100 from being blown away by the wind field, and determine the pull force exerted by the mooring unit 210 on the afloat 100 and the attitude of the afloat 100 based on the relative positional relationship between the afloat 100 and the mooring unit 210, thereby achieving force balance on the afloat 100.

[0059] For example, Figure 8The second force analysis scenario is illustrated, where the buoyancy unit 100 is not upright and the absolute angle of attack is not zero, particularly when the wind direction is horizontal. In this scenario, the horizontal component of the pull force generated by the mooring unit 210 on the buoyancy unit 100, controlled by the control signal generated by the ground control center 230, is used to balance the resultant force of the horizontal components of wind force, drag, and lift acting on the buoyancy unit 100. The vertical component of the pull force generated by the mooring unit 210 on the buoyancy unit 100 is used to balance the resultant force of the vertical components of gravity, buoyancy, and lift. Unlike the first force analysis scenario, in the second scenario, the buoyancy unit 100 is also subjected to an additional restoring force to form a restoring torque. This causes at least a partial adjustment in the direction and / or magnitude of the other forces acting on the buoyancy unit 100 during its rotation based on the restoring torque. Furthermore, during the rotation of the buoyancy unit 100 based on the return torque, the direction of the lift force it experiences rotates with the rotation of the buoyancy unit 100, maintaining its perpendicularity to the axis of the buoyancy unit 100. This causes the resultant force of the buoyancy unit 100 in the horizontal and vertical directions to change constantly, requiring the ground control center 230 to dynamically balance the resultant force of the buoyancy unit 100 in the horizontal and vertical directions. Preferably, the ground control center 230 can achieve dynamic balancing in the following way: the rotation process of the buoyancy unit 100 based on the return torque is divided into several nodes, and the direction and magnitude of the lift force, as well as the magnitude of wind force and drag, are determined for each node. The magnitude of the tension force at each node is calculated through the force balance in the horizontal direction, and the magnitude of the buoyancy force at each node is calculated through the force balance in the vertical direction. This smooths the tension and buoyancy values ​​of each node during the entire return rotation process, resulting in the tension adjustment scheme for the mooring unit 210 and the attitude adjustment scheme for the buoyancy unit 100. It should be noted that: Figure 8 The floating part 100 shown is in an upward-tilting state, while under the same conditions, the floating part 100 in a downward-tilting state also belongs to the second type of force analysis case, and its force analysis process is the same as above.

[0060] For example, Figure 9The third force analysis scenario is illustrated, where the buoyancy unit 100 is in a relatively upright state and the absolute angle of attack is not zero, especially when the wind direction is not horizontal. In this scenario, the horizontal component of the pulling force generated by the mooring unit 210 on the buoyancy unit 100, controlled by the control signal generated by the ground control center 230, is used to balance the resultant force of the horizontal components of the wind force and the drag force on the buoyancy unit 100. The vertical component of the pulling force generated by the mooring unit 210 on the buoyancy unit 100 is used to balance the resultant force of gravity, buoyancy, lift, the vertical components of the wind force and the vertical components of the drag force. Similar to the second force analysis scenario, in the third force analysis scenario, the buoyancy unit 100 is also subjected to an additional restoring force to form a restoring torque, thereby causing at least a partial adjustment in the direction and / or magnitude of the other forces acting on the buoyancy unit 100 during its rotation based on the restoring torque. Furthermore, during the rotation of the buoyancy section 100 based on the return torque, the direction of the lift force it experiences rotates with the rotation of the buoyancy section 100, maintaining its perpendicularity to the axis of the buoyancy section 100. This causes the resultant force of the buoyancy section 100 in the horizontal and vertical directions to change constantly, requiring the ground control center 230 to dynamically balance the resultant force of the buoyancy section 100 in the horizontal and vertical directions. Preferably, the ground control center 230 can achieve dynamic balancing by dividing the rotation process of the buoyancy section 100 based on the return torque into several nodes, determining the direction and magnitude of the lift force, as well as the magnitude of wind force and drag, for each node. The magnitude of the tension force at each node is calculated through the force balance in the horizontal direction, and the magnitude of the buoyancy force at each node is calculated through the force balance in the vertical direction. This smooths the tension and buoyancy values ​​of each node during the entire return rotation process, resulting in the tension adjustment scheme for the mooring unit 210 and the adjustment scheme for the pressure of the lightweight gas inside the buoyancy body 110. However, unlike the second force analysis scenario, in the third force analysis scenario, wind force and drag affect the resultant force in the vertical direction, and the lift force changes from having only a vertical component to a resultant force with both vertical and horizontal components. It is important to note that: Figure 9 The figure shows the case where the absolute angle of attack is positive. Under the same conditions, the case where the absolute angle of attack is negative also belongs to the third type of force analysis, and the force analysis process is the same as above.

[0061] Preferably, the ground control center 230 can prioritize adjusting the tension applied to the mooring unit 210 and / or the buoyancy experienced by the floating part 100. When adjusting only these two forces is insufficient to quickly achieve force balance, the lift can be altered by adjusting the degree of skin bulge to narrow or widen the second air duct 131, thereby changing the wind speed passing through the second air duct 131. Furthermore, when changing the lift, the drag may be adjusted synchronously. Therefore, when using the above-mentioned method for adjustment, the ground control center 230 needs to consider the interrelationships of various forces.

[0062] The wind power generation system of this invention adopts modular production and installation, and improves production efficiency through continuous heat sealing process and controlled lamination process. The floating part 100 adopts a rigid-flexible coupling design, combining flexible capsule material and lightweight rigid frame, adopting ducted airship capsule compartmentalized shape-maintaining pressure technology, and large truss structure lightweight design to achieve a flexible-rigid coupling structure.

[0063] During the ascent and descent phases, the buoyancy section 100 maintains its external rigidity through pressure control; during the inflation and deflation phases, a motorized enclosure is used to resist wind force. The advantages of the wind power generation system of this invention include a motor mass per unit power ≥ 2 kW / kg, a blade mass per unit power ≤ 1 kg / kW, and real-time satellite positioning and communication throughout the entire lifecycle to ensure stable system operation and high-efficiency energy conversion.

[0064] It should be noted that the specific embodiments described above are exemplary. Those skilled in the art can devise various solutions inspired by the disclosure of this invention, and these solutions all fall within the scope of this invention and its protection. Those skilled in the art should understand that this specification and its accompanying drawings are illustrative and do not constitute a limitation on the claims. The scope of protection of this invention is defined by the claims and their equivalents. This specification contains multiple inventive concepts; phrases such as "preferred" or "according to a preferred embodiment" indicate that the corresponding paragraph discloses an independent concept. The applicant reserves the right to file divisional applications based on each inventive concept. Throughout the text, the feature introduced by "preferred" is only an optional mode and should not be construed as mandatory. Therefore, the applicant reserves the right to abandon or delete relevant preferred features at any time.

Claims

1. A wind power generation system comprising a floating section (100) having a power generation component (120) located radially inward, wherein, The floating part (100) includes: The floating body (110) surrounds the power generation component (120) with a first air duct (121) on all sides. A ring-shaped wing (130), located radially outside the floating body (110) and 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. 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 levitation 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 relative rear side of the air-supported body (110), such 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 on the relative rear side of the restoring center, wherein the restoring center is the center of buoyancy of the air-supported 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 center of return and the point of application of the return force, the return force generated by the annular wing (130) can cause the floating part (100) to rotate around the center of return. Specifically, when the absolute angle of attack is positive, the annular wing (130) can generate a return torque that drives the floating part (100) to pitch down; when the absolute angle of attack is negative, the annular wing (130) can generate a return torque that drives the floating part (100) to pitch up.

4. The wind power generation system according to claim 1, characterized in that, The annular wing (130) is connected to the air-supported body (110) via one or more tail wings (140). The tail wings (140) are located on the opposite rear side of the air-supported body (110) and are configured as a sheet-like structure with a certain thickness. The wing surface formed by its length direction and width direction is arranged along the axial direction of the air-supported body (110).

5. The wind power generation system according to claim 1, characterized in that, The skin of the floating body (110) is filled with a light gas lighter than air. 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 claim 1, characterized in that, The wind power generation system is also equipped with a ground mooring unit (200) for cooperating with the floating unit (100). The ground mooring unit (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 analysis of the operating status of the floating unit (100), and a ground measurement and control center (230) for adjusting mission decisions and generating operation instructions.

7. The wind power generation system according to claim 6, characterized in that, The ground control center (230) can perform force analysis on the floating part (100) based on sensor data to determine the control scheme. The ground control center (230) can perform force analysis under various conditions based on the state and absolute angle of attack of the floating part (100), and can issue control signals 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 claim 7, characterized in that, When the floating part (100) is in a relatively upright state and the absolute angle of attack is 0, the horizontal component of the pulling force generated by the mooring unit (210) on the floating part (100) under the control signal generated by the ground control center (230) is used to balance the resultant force of wind force and drag 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 resultant force of gravity, buoyancy and lift.

9. The wind power generation system according to claim 7, characterized in that, When the floating part (100) is not upright and the absolute angle of attack is not 0, during the process of the floating part (100) rotating based on the normalizing torque generated by the normalizing force, the lift force changes from the resultant force with both vertical and horizontal components to a force with only vertical components, so that the ground control center (230) can dynamically balance the resultant force in the two directions by dividing the nodes.

10. The wind power generation system according to claim 7, 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 process of the floating part (100) rotating based on the normalizing torque generated by the normalizing force, the lift force changes from having only a vertical force to a resultant force having both a vertical component and a horizontal component, so that the ground control center (230) can dynamically balance the resultant force in the two directions by dividing the nodes.

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