An inflatable adaptive horizontal axis wind turbine

By using the combination of inflatable adaptive blades and hydraulic tower mechanisms in the wind turbine, dynamic adjustment of the height and blade airfoils of the wind turbine are achieved, solving the inefficiency and environmental protection problems of traditional wind turbines under different wind speed conditions, and improving power generation efficiency and safety.

CN119572408BActive Publication Date: 2025-05-06NORTHEAST DIANLI UNIVERSITY
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Patent Information

Application Number
CN202510138408.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-02-08
Publication Date
2025-05-06
Estimated Expiration
2045-02-08

AI Technical Summary

Technical Problem

Traditional fixed-blade wind turbines cannot fully capture the energy brought by changing wind speeds under different wind speed conditions, resulting in low power generation efficiency and difficult to degrade and recover the blades.

Method used

The inflatable adaptive horizontal shaft wind turbine is adopted to dynamically adjust the height of the wind turbine through the hydraulic tower mechanism, and the air-film blade mechanism is used to maintain the blade airfoil shape through high-pressure air to achieve automatic change of the airfoil shape.

Benefits of technology

It improves the efficiency and adaptability of wind power generation, solves the problems of difficult degradation and recycling of traditional blades, and ensures the safety of the device under extreme weather conditions.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention discloses an inflatable adaptive horizontal axis wind turbine, which belongs to the technical field of wind power generation. The inflatable blade design is adopted. The design adopts an air film structure. The blade airfoil is maintained by filling high-pressure air, thereby providing basic conditions for realizing flexible and dynamic changes of the blade airfoil. The present invention detects wind condition data in the wind speed and wind direction detection stage, selects an airfoil with the highest adaptability to the wind condition according to the wind condition data, and an airfoil control component controls the blade airfoil according to the airfoil data to realize automatic changes of the blade airfoil. After the blade is damaged or aged, it can be repaired or efficiently recycled and reused, thereby solving the pollution problem of traditional blades being difficult to degrade and recycle. The dynamic adjustment of the height of the wind turbine can be realized. Under normal circumstances, the height of the wind turbine can be automatically adjusted according to the wind conditions, thereby improving the wind energy capture efficiency while avoiding the wake effect, thereby improving the power generation efficiency of the device. Under extreme weather conditions, the height of the wind turbine can be lowered to avoid damage to the device and ensure the safety of the device.
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Description

Technical Field

[0001] The invention belongs to the technical field of wind power generation, and in particular relates to an inflatable self-adaptive horizontal axis wind turbine. Background Art

[0002] At present, as the mainstream equipment for wind energy conversion, horizontal-axis wind turbines still have huge room for development and improvement in their power generation efficiency and adaptability under complex wind conditions.

[0003] The traditional fixed blade design shows obvious limitations under different wind speed conditions and cannot fully capture the energy brought by the changing wind speed, resulting in reduced power generation efficiency. In addition, fixed blades are mainly composed of composite materials such as glass fiber and carbon fiber. Although they are strong and corrosion-resistant, they also face the challenges of difficult degradation and recycling. Therefore, it is necessary to develop an inflatable adaptive horizontal axis wind turbine to adapt to the changing wind environment and improve power generation efficiency. Summary of the invention

[0004] To this end, the present invention provides an inflatable adaptive horizontal axis wind turbine to solve the problems of traditional technology that it cannot fully capture the energy brought by changing wind speed, has low power generation efficiency, and is difficult to degrade and recycle.

[0005] In order to achieve the above-mentioned object, the present invention provides the following technical solution: an inflatable adaptive horizontal axis wind turbine, comprising a hydraulic tower mechanism, a nacelle, a fairing and an air film blade mechanism; the nacelle is connected to the top of the hydraulic tower mechanism, the fairing is connected to the side of the nacelle, and the air film blade mechanism is connected to the fairing;

[0006] The air film blade mechanism includes an air film blade body, a support frame is provided inside the air film blade body, a plurality of airfoil control components are fixed to the support frame, each of the airfoil control components includes a telescopic controller, a telescopic rod and an air film connecting piece, the telescopic controller is connected to one end of the telescopic rod, and the other end of the telescopic rod is connected to the inner wall of the air film blade body through the air film connecting piece;

[0007] A high-pressure gas pipeline is also provided inside the air film blade body. The high-pressure gas pipeline extends to the end of the air film blade body. Inflation holes are distributed on the high-pressure gas pipeline.

[0008] As a preferred solution for an inflatable adaptive horizontal axis wind turbine, the hydraulic tower mechanism includes a hydraulic pump, a hydraulic pipeline, a hydraulic drive cylinder and a hydraulic rod; the hydraulic pump is connected to the hydraulic drive cylinder through the hydraulic pipeline, and the hydraulic drive cylinder is connected to the hydraulic rod;

[0009] The hydraulic drive cylinder and the hydraulic rod form a tower of a wind turbine.

[0010] As a preferred solution for an inflatable adaptive horizontal axis wind turbine, the hydraulic tower mechanism adjusts the height of the wind turbine according to the wind conditions. Under normal circumstances, the wind turbine height adjustment control formula is:

[0011] ;

[0012] Where h(t) is the tower height formed by the hydraulic drive cylinder and the hydraulic rod; k is the adjustment sensitivity coefficient; v(t) is the wind speed; v opt To optimize wind speed.

[0013] As the preferred solution for inflatable adaptive horizontal axis wind turbines, under extreme weather conditions, the wind turbine height adjustment control formula is:

[0014] ;

[0015] ;

[0016] In the formula, v in is the cut-in wind speed; v off To cut out the wind speed;

[0017] The dynamic response equation of the hydraulic system of the hydraulic tower mechanism is:

[0018] ;

[0019] In the formula, is the inertia correlation coefficient; is the damping coefficient; is the stiffness correlation coefficient; is the Heaviside function, which represents the switching characteristics under extreme weather conditions.

[0020] As a preferred solution for an inflatable adaptive horizontal axis wind turbine, the air film blade body is made of PVDF film material, and the air film blade body is dynamically adjusted by the airfoil control components arranged at intervals on the support frame.

[0021] As a preferred solution for an inflatable adaptive horizontal axis wind turbine, the high-pressure gas pipeline is provided with an air pump, and the air pump is installed inside the cabin. The air pump fills high-pressure air into the interior of the air film blade body through the high-pressure gas pipeline to form a positive pressure environment inside the air film blade body; the pressure difference between the inside and outside of the air film blade body is not less than 400 Pa.

[0022] As a preferred solution for an inflatable adaptive horizontal axis wind turbine, the formula for setting the number of the airfoil control components fixed on the support frame is:

[0023] ;

[0024] ;

[0025] L effective =LL tip ;

[0026] Where n is the number of airfoil control components; L is the length of the air film blade body; d is the distance between airfoil control components; is the design variable; L is the effective air film blade body length; tip Reserve distance for the end of the air film blade body.

[0027] As a preferred solution of the inflatable adaptive horizontal axis wind turbine, the arrangement constraint conditions of the airfoil control assembly fixed on the support frame are:

[0028] ;

[0029] ;

[0030] ;

[0031] ;

[0032] Where S is the safety factor; V avg is the average wind speed; V ref is the design reference wind speed; k` is the design variable; N is the average speed; N ref is the design reference speed; n min is the minimum number of airfoil control components; n max is the maximum number of airfoil control components; d min is the minimum spacing distance of airfoil control components; d max is the maximum spacing distance of airfoil control components; S max is the maximum allowable value of the safety factor.

[0033] As a preferred solution for an inflatable adaptive horizontal axis wind turbine, the airfoil control formula of the air film blade body is:

[0034] ;

[0035] In the formula, is the airfoil control function of the film blade body; is the wind direction angle; is the airfoil data; , is the weight coefficient, satisfying ω1+ω2=1; is the lift coefficient; is the resistance coefficient.

[0036] As the preferred solution of the inflatable adaptive horizontal axis wind turbine, the power generation of the wind turbine is:

[0037] ;

[0038] In the formula, The power generated by the wind turbine; is the air density; It is the wind sweeping area of ​​the air film blade body.

[0039] The present invention has the following advantages: due to the adoption of an inflatable blade design, the design adopts an air film structure, and the blade airfoil is maintained by filling high-pressure air, providing basic conditions for realizing flexible and dynamic changes in the blade airfoil; the present invention uses wind condition data in the wind speed and wind direction detection stage, selects the airfoil with the highest adaptability to the wind condition according to the wind condition data, and the airfoil control component controls the blade airfoil according to the airfoil data to realize automatic changes in the blade airfoil; after the blade is damaged or aged, it can be repaired or efficiently recycled and reused, solving the pollution problem of traditional blades that are difficult to degrade and recycle; the dynamic adjustment of the height of the wind turbine can be realized, and under normal circumstances, the height of the wind turbine can be automatically adjusted according to the wind conditions, thereby improving the wind energy capture efficiency while avoiding the wake effect, thereby improving the power generation efficiency of the device; under extreme weather conditions, the height of the wind turbine can be lowered to avoid damage to the device and ensure the safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0041] Figure 1 It is a three-dimensional schematic diagram of an inflatable adaptive horizontal axis wind turbine provided in an embodiment of the present invention;

[0042] Figure 2 A schematic diagram of the interior of an inflatable adaptive horizontal axis wind turbine air film blade mechanism from a first perspective provided in an embodiment of the present invention;

[0043] Figure 3 A schematic diagram of the interior of an inflatable adaptive horizontal axis wind turbine air film blade mechanism from a second viewing angle provided in an embodiment of the present invention;

[0044] Figure 4 It is a third-angle schematic diagram of the interior of the inflatable adaptive horizontal-axis wind turbine air film blade mechanism provided in an embodiment of the present invention.

[0045] In the figure, 1. hydraulic tower mechanism; 2. cabin; 3. fairing; 4. air film blade mechanism; 5. air film blade body; 6. support frame; 7. airfoil control assembly; 8. telescopic controller; 9. telescopic rod; 10. air film connecting piece; 11. high-pressure gas pipeline; 12. inflation hole; 13. hydraulic pump; 14. hydraulic pipeline; 15. hydraulic drive cylinder; 16. hydraulic rod. DETAILED DESCRIPTION

[0046] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The embodiment of the present invention provides an inflatable adaptive horizontal axis wind turbine, comprising a hydraulic tower mechanism 1, a nacelle 2, a fairing 3 and an air film blade mechanism 4; the nacelle 2 is connected to the top of the hydraulic tower mechanism 1, the fairing 3 is connected to the side of the nacelle 2, and the air film blade mechanism 4 is connected to the fairing 3;

[0048] The air film blade mechanism 4 includes an air film blade body 5, a support frame 6 is provided inside the air film blade body 5, and a plurality of airfoil control components 7 are fixed to the support frame 6. Each airfoil control component 7 includes a telescopic controller 8, a telescopic rod 9 and an air film connecting piece 10. The telescopic controller 8 is connected to one end of the telescopic rod 9, and the other end of the telescopic rod 9 is connected to the inner wall of the air film blade body 5 through the air film connecting piece 10.

[0049] A high-pressure gas pipeline 11 is further provided inside the air film blade body 5 . The high-pressure gas pipeline 11 extends to the end of the air film blade body 5 . Inflation holes 12 are distributed on the high-pressure gas pipeline 11 .

[0050] In this embodiment, the hydraulic tower mechanism 1 includes a hydraulic pump 13, a hydraulic pipeline 14, a hydraulic drive cylinder 15 and a hydraulic rod 16; the hydraulic pump 13 is connected to the hydraulic drive cylinder 15 through the hydraulic pipeline 14, and the hydraulic drive cylinder 15 is connected to the hydraulic rod 16; the hydraulic drive cylinder 15 and the hydraulic rod 16 form the tower of the wind turbine. Under normal circumstances, the hydraulic tower mechanism 1 automatically adjusts the height of the wind turbine according to the wind conditions, so that the air film blade body 5 is always at a height with sufficient wind resources, thereby improving the power generation efficiency. When encountering extreme weather, in order to ensure the safety of the device, the hydraulic tower mechanism 1 lowers the height of the wind turbine to avoid the risk of stalling or blade damage to the wind turbine.

[0051] Specifically, the hydraulic tower mechanism 1 adjusts the height of the wind turbine according to the wind conditions. Under normal circumstances, the wind turbine height adjustment control formula is:

[0052] ;

[0053] Wherein, h(t) is the tower height formed by the hydraulic drive cylinder 15 and the hydraulic rod 16 (m); k is the adjustment sensitivity coefficient (m / s 2 ); v(t) is wind speed (m / s); v opt To optimize wind speed (m / s).

[0054] Among them, under extreme weather conditions, the wind turbine height adjustment control formula is:

[0055] ;

[0056] ;

[0057] In the formula, v in is the cut-in wind speed (m / s); v off is the cut-out wind speed (m / s); if v(t)>v off ,but , the hydraulic tower mechanism 1 lowers the height of the wind turbine to avoid device stall or blade damage.

[0058] Among them, the dynamic response equation of the hydraulic system of the hydraulic tower mechanism 1 is:

[0059] ;

[0060] In the formula, is the inertia correlation coefficient; is the damping coefficient; is the stiffness correlation coefficient; is the Heaviside function, which represents the switching characteristics under extreme weather conditions.

[0061] In this embodiment, the air film blade body 5 is made of PVDF film material, and the air film blade body 5 performs dynamic adjustment of the blade airfoil through the airfoil control components 7 arranged at intervals on the support frame 6. The high-pressure gas pipeline 11 is equipped with an air pump, which is installed inside the cabin 2. The air pump fills the air film blade body 5 with high-pressure air through the high-pressure gas pipeline 11, so that the inside of the air film blade body 5 forms a positive pressure environment; the pressure difference between the inside and outside of the air film blade body 5 is not less than 400pa.

[0062] Specifically, the air film blade body 5 adopts PVDF film material to take into account the wear resistance, lightness and environmental protection of the air film blade body 5. After the air film blade body 5 is damaged or aged, it can be repaired or efficiently recycled and reused, which solves the pollution problem of difficult degradation and recycling of traditional blades. Regarding the high-pressure air in the air film blade body 5. The high-pressure gas pipeline 11 is installed on the side of the front edge of the air film blade body 5 next to the support frame 6. The distance between the high-pressure gas pipeline 11 and the support frame 6 should not be less than 2% of the length of the support frame 6. High-pressure air enters the air film blade body 5 through the high-pressure gas pipeline 11, and a positive pressure environment is formed inside the air film blade body 5. The pressure difference between the inside and outside of the air film blade body 5 is not less than 400pa, which is used to maintain the support of the airfoil of the air film blade body 5. The high-pressure air is generated by an air pump, which can be installed in the cabin 2 or other reasonable positions (as long as it does not affect the normal operation of the device). This embodiment does not specify the position of the air pump.

[0063] In this embodiment, the air film blade body 5 is based on an air-supported membrane structure, and PVDF membrane material is selected as the air film material. The airfoil control components 7 are arranged at intervals on the support frame 6 to achieve dynamic changes in the airfoil of the air film blade body 5.

[0064] Specifically, the formula for setting the number of airfoil control components 7 fixed on the support frame 6 is:

[0065] ;

[0066] ;

[0067] L effective =LL tip ;

[0068] Wherein, n is the number of airfoil control components 7; L is the length of the air film blade body 5 (m); d is the spacing distance between the airfoil control components 7 (m); is the design variable; L is the effective air film blade body length (m); tip A distance (m) is reserved for the end of the air film blade body 5.

[0069] Among them, the arrangement constraint conditions of the airfoil control assembly 7 fixed on the support frame 6 are:

[0070] ;

[0071] ;

[0072] ;

[0073] ;

[0074] Where S is the safety factor; V avg is the average wind speed (m / s); V ref is the design reference wind speed (m / s); k` is the design variable; N is the average speed (rpm); N ref is the design reference speed (m / s); n min The minimum number of airfoil control components 7 is limited by the length of the air film blade body 5 and the air film material; n max The maximum number of airfoil control components 7 is limited by structural safety and aerodynamic performance; d min The minimum spacing distance of the airfoil control assembly 7 ensures structural stability and aerodynamic performance requirements; d max The maximum spacing distance of the airfoil control assembly 7 ensures safety and control performance; S max is the maximum allowable value of the safety factor.

[0075] In this embodiment, the airfoil control component 7 is centered on the telescopic controller 8. The position of the air film connecting piece 10 is changed by controlling the extension and retraction of the telescopic rod 9. The air film connecting piece 10 is connected to the air film blade body 5. The position change of the air film connecting piece 10 directly controls the molding shape (blade airfoil) of the air film blade body 5. The number of combinations of the air film connecting piece 10 and the telescopic rod 9 can be changed according to actual needs (in this embodiment, each airfoil control component 7 has four groups of air film connecting pieces 10 and telescopic rods 9).

[0076] Among them, the airfoil control component 7 is uniformly controlled by the centralized control system. First, the wind data in the current wind field is measured through the wind measuring tower, and the airfoil that best suits the wind condition is selected according to the measured wind condition data. Then, the selected airfoil data is input into each airfoil control component 7. Each set of airfoil data corresponds to a different telescopic distance of the telescopic rod 9, thereby realizing the change of the shape of the air film blade body 5. Finally, the power generation power of the device after the airfoil change is evaluated, and the result is fed back to the centralized control system to dynamically adjust the airfoil of the air film blade body 5.

[0077] Specifically, the airfoil control formula of the air film blade body 5 is:

[0078] ;

[0079] In the formula, is the airfoil control function of the film blade body 5; is the wind direction angle; is the airfoil data; , is the weight coefficient, satisfying ω1+ω2=1; is the lift coefficient, which depends on the airfoil shape, C L =a0+a1α+a2α 2, a0 is the constant term, representing the lift coefficient at zero angle of attack; a1 is the coefficient of the linear term, representing the rate at which the lift coefficient changes with the angle of attack; a2 is the coefficient of the quadratic term, representing the nonlinear change of the lift coefficient when the angle of attack is large; is the drag coefficient, C D =C0+γC L 2 , C0 is the zero lift drag coefficient; γ is a proportional constant, which is related to the blade geometry and reflects the nonlinear relationship between the lift coefficient and the drag coefficient under higher lift coefficient conditions.

[0080] Specifically, the power generated by the wind turbine is:

[0081] ;

[0082] In the formula, The power generated by the wind turbine; is the air density; It is the wind sweeping area of ​​the air film blade body 5.

[0083] In a possible embodiment, the control formula of the telescopic rod 9 is:

[0084] ;

[0085] Wherein, D is the telescopic sensitivity (m); b is the initial position of the telescopic rod 9; and λ is the control coefficient.

[0086] The dynamic fine-tuning formula of the telescopic rod 9 is:

[0087] ;

[0088] If |∆P| > ϵ, then the adjustment D`=D0+ ∆D is performed, where ϵ is the threshold; D` is the adjusted telescopic sensitivity; ∆D is the adjustment amount of the telescopic sensitivity; and D0 is the initial telescopic sensitivity.

[0089] It should be noted that the cabin 2 and fairing 3 involved in this embodiment belong to the existing technology and will not be described in detail here. The control of the telescopic controller 8 and the telescopic rod 9 in this embodiment can adopt the existing telescopic electric cylinder and other existing technologies and will not be described in detail here.

[0090] In summary, the present invention includes a hydraulic tower mechanism 1, a cabin 2, a fairing 3 and an air film blade mechanism 4; the cabin 2 is connected to the top of the hydraulic tower mechanism 1, the fairing 3 is connected to the side of the cabin 2, and the air film blade mechanism 4 is connected to the fairing 3; the air film blade mechanism 4 includes an air film blade body 5, a support frame 6 is provided inside the air film blade body 5, and a plurality of airfoil control components 7 are fixed to the support frame 6, each airfoil control component 7 includes a telescopic controller 8, a telescopic rod 9 and an air film connecting piece 10, the telescopic controller 8 is connected to one end of the telescopic rod 9, and the other end of the telescopic rod 9 is connected to the inner wall of the air film blade body 5 through the air film connecting piece 10, and a high-pressure gas pipeline 11 is also provided inside the air film blade body 5, and the high-pressure gas pipeline 11 extends to the end of the air film blade body 5, and inflation holes 12 are distributed on the high-pressure gas pipeline 11. The present invention adopts an inflatable blade design, which adopts an air film structure and maintains the blade airfoil by filling high-pressure air, thereby providing basic conditions for realizing flexible and dynamic changes in the blade airfoil; the present invention uses wind speed and wind direction detection stage wind condition data, selects the airfoil with the highest adaptability to the wind condition according to the wind condition data, and the airfoil control component 7 controls the blade airfoil according to the airfoil data to realize automatic changes in the blade airfoil; after the blade is damaged or aged, it can be repaired or efficiently recycled and reused, solving the pollution problem of traditional blades that are difficult to degrade and recycle; the dynamic adjustment of the height of the wind turbine can be realized, and under normal circumstances, the height of the wind turbine can be automatically adjusted according to the wind conditions, thereby improving the wind energy capture efficiency while avoiding the wake effect, thereby improving the power generation efficiency of the device; under extreme weather conditions, the height of the wind turbine can be lowered to avoid damage to the device and ensure the safety of the device.

[0091] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. An inflatable adaptive horizontal axis wind turbine, characterized in that: The invention comprises a hydraulic tower mechanism (1), a nacelle (2), a fairing (3) and an air film blade mechanism (4); the nacelle (2) is connected to the top of the hydraulic tower mechanism (1), the fairing (3) is connected to the side of the nacelle (2), and the air film blade mechanism (4) is connected to the fairing (3); The air film blade mechanism (4) comprises an air film blade body (5), a support frame (6) is provided inside the air film blade body (5), a plurality of airfoil control components (7) are fixed to the support frame (6), each of the airfoil control components (7) comprises a telescopic controller (8), a telescopic rod (9) and an air film connecting piece (10), the telescopic controller (8) is connected to one end of the telescopic rod (9), and the other end of the telescopic rod (9) is connected to the inner wall of the air film blade body (5) through the air film connecting piece (10); A high-pressure gas pipeline (11) is also provided inside the air film blade body (5), and the high-pressure gas pipeline (11) extends to the end of the air film blade body (5), and inflation holes (12) are distributed on the high-pressure gas pipeline (11); The arrangement constraint conditions of the airfoil control assembly (7) fixed on the support frame (6) are: d min ≤β`·L effective ≤d max S≤S max Where S is the safety factor; V avg is the average wind speed; V ref is the design reference wind speed; k` is the design variable; N is the average speed; N ref is the design reference speed; n min is the minimum number of airfoil control components (7); n max is the maximum number of airfoil control components (7); L is the length of the air film blade body (5); d is the spacing distance between airfoil control components (7); d min is the minimum spacing distance of the airfoil control component (7); β` is the design variable; L effective is the effective air film blade body (5) length; d max S is the maximum spacing distance of the airfoil control assembly (7); max is the maximum allowable value of the safety factor; The airfoil control formula of the air film blade body (5) is: f(v,θ,B i )=w1C L (v,θ,B i )+w2C D (v,θ,B i ) Where, f(V,θ,B i ) is the airfoil control function of the air film blade body (5); θ is the wind direction angle; B i is the airfoil data; w1, w2 are weight coefficients, satisfying ω1+ω2=1; C L is the lift coefficient; C D is the resistance coefficient.

2. The inflatable adaptive horizontal axis wind turbine according to claim 1, characterized in that: The hydraulic tower mechanism (1) comprises a hydraulic pump (13), a hydraulic pipeline (14), a hydraulic drive cylinder (15) and a hydraulic rod (16); the hydraulic pump (13) is connected to the hydraulic drive cylinder (15) via the hydraulic pipeline (14), and the hydraulic drive cylinder (15) is connected to the hydraulic rod (16); The hydraulic drive cylinder (15) and the hydraulic rod (16) form a tower of the wind turbine.

3. The inflatable adaptive horizontal axis wind turbine according to claim 2, characterized in that: The hydraulic tower mechanism (1) adjusts the height of the wind turbine according to the wind conditions. Under normal circumstances, the wind turbine height adjustment control formula is: Wherein, h(t) is the tower height formed by the hydraulic drive cylinder (15) and the hydraulic rod (16); k is the adjustment sensitivity coefficient; v(t) is the wind speed; v opt To optimize wind speed.

4. The inflatable adaptive horizontal axis wind turbine according to claim 3, characterized in that: Under extreme weather conditions, the wind turbine height adjustment control formula is: in in <v(t)<v off In the formula, v in is the cut-in wind speed; v off To cut out the wind speed; The dynamic response equation of the hydraulic system of the hydraulic tower mechanism (1) is: Where, τ is the inertia correlation coefficient; α is the damping coefficient; β is the stiffness correlation coefficient; H(v(t)-v off ) is the Heaviside function, which represents the switching characteristics under extreme weather conditions.

5. The inflatable adaptive horizontal axis wind turbine according to claim 2, characterized in that: The air film blade body (5) is made of PVDF film material, and the air film blade body (5) is used to dynamically adjust the blade airfoil through the airfoil control components (7) arranged at intervals on the support frame (6).

6. The inflatable adaptive horizontal axis wind turbine according to claim 5, characterized in that: The high-pressure gas pipeline (11) is equipped with an air pump, and the air pump is installed inside the cabin (2). The air pump fills the interior of the air film blade body (5) with high-pressure air through the high-pressure gas pipeline (11) to form a positive pressure environment inside the air film blade body (5); the pressure difference between the inside and outside of the air film blade body (5) is not less than 400 Pa.

7. The inflatable adaptive horizontal axis wind turbine according to claim 6, characterized in that: The formula for setting the number of the airfoil control components (7) fixed on the support frame (6) is: d=β`·L effective L effective =LL tip Where, L tip A distance is reserved for the end of the air film blade body (5).

8. The inflatable adaptive horizontal axis wind turbine according to claim 1, characterized in that: The power generated by the wind turbine is: Wherein, P is the power generated by the wind turbine; ρ is the air density; and A is the swept area of ​​the air film blade body (5).

Citation Information

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