A high-voltage tower-mounted h-type wind turbine and a control method thereof

Abstract

The application provides a high-voltage iron tower type H-shaped wind driven generator, which comprises a three-box generator, a fan base arranged on the three-box generator, a two-stage gear accelerator and a lifting main shaft arranged on the fan base, an input shaft of the two-stage gear accelerator is in transmission connection with the lifting main shaft through a flexible coupling, an output shaft of the two-stage gear accelerator is in transmission connection with an input shaft of the three-box generator, a fan protection shell is arranged on the periphery of the fan base, liftable wind guide protection blades are arranged in a ring shape in the fan protection shell, the lifting main shaft is connected with telescopic blades through telescopic connecting rods, the telescopic blades can be telescoped along the axial direction of the lifting main shaft, and the telescopic blades are located on the inner side of the wind guide protection blades when the wind guide protection blades are lifted. The application has the effects of improving the variable pitch range and the structural strength of the wind driven generator.

Description

Technical Field

[0001] This invention relates to the field of power supply technology for small wind power and tower sensors, and particularly to a high-voltage tower-mounted H-type wind turbine and its control method. Background Technology

[0002] H-type vertical axis wind turbines utilize aerodynamic principles and wind tunnel simulations for vertical axis rotation. The blades are designed with an airfoil shape, ensuring efficiency is not affected by deformation during rotor rotation. The turbine consists of 4-5 vertically aligned blades connected to a hub in a quadrilateral or pentagonal shape, forming a rotor. This rotor drives a rare-earth permanent magnet generator to produce electricity, which is then sent to a controller for load distribution. Currently, small vertical axis wind turbines have a significant market share in smart tower power transmission, particularly for sensor power supply. Multiple turbine models have been tested on various towers with good results. Compared to photovoltaic power, this method provides more and more stable power, ensuring a consistent supply to sensors and reducing the probability of sensor shutdown due to insufficient power.

[0003] However, in the relevant technical solutions, especially during the operation of wind turbines, although the problems of low power generation and power generation efficiency have been solved to some extent, there are three common problems: First, the structural strength is low and the protection devices are lacking, which can easily cause the equipment to be damaged in severe weather. Second, the lack of a pitch control structure or the small range of pitch control structure makes it difficult to adapt the blade rotation characteristics to the current wind speed and maximize power. Third, the main shaft is not strong enough and is prone to deformation under complex weather conditions, which affects normal wind power generation. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a high-voltage tower-mounted H-type wind turbine and its control method, which solves the problems of low structural strength and small pitch range in existing wind turbines.

[0005] According to an embodiment of the present invention, a high-voltage tower-mounted H-type wind turbine includes a three-box generator, a wind turbine base mounted on the three-box generator, a two-stage gear accelerator and a lifting main shaft arranged on the wind turbine base. The input shaft of the two-stage gear accelerator is drivenly connected to the lifting main shaft through a flexible coupling, and the output shaft of the two-stage gear accelerator is drivenly connected to the input shaft of the three-box generator. A wind turbine protective shell is arranged around the periphery of the wind turbine base, and liftable wind guide protection blades are arranged in a ring around the wind turbine protective shell. The lifting main shaft is connected to telescopic blades through a telescopic connecting rod. The telescopic blades can extend and retract along the axial direction of the lifting main shaft. When the wind guide protection blades are lifted, the telescopic blades are located inside the wind guide protection blades.

[0006] Preferably, the telescopic blades include telescopic base blades and telescopic top blades, and the lifting main shaft includes a solid shaft at the top and a hollow shaft at the bottom. The solid shaft is slidably coaxially arranged on the top of the hollow shaft, and a push rod motor for controlling the telescopic extension and retraction of the solid shaft is arranged on the hollow shaft. The telescopic connecting rod is connected to both the hollow shaft and the solid shaft, and the telescopic base blades and the telescopic top blades are respectively connected through the telescopic connecting rods. The telescopic connecting rod is a linkage structure with a push rod motor.

[0007] Preferably, the telescopic connecting rod and the telescopic blade are connected at the connecting end with a fan blade connecting shaft, the axial direction of the fan blade connecting shaft is parallel to the axial direction of the telescopic blade, the telescopic blade is fixedly connected to the fan blade connecting shaft, and a small rotary motor for controlling the rotation of the fan blade connecting shaft is provided on the telescopic connecting rod.

[0008] Preferably, one side of the telescopic blade is a plane and the other side is an arc-shaped surface, and the inner sides of the telescopic blades, which are equidistant from the lifting main shaft, are all planes or arc-shaped surfaces.

[0009] Preferably, the flexible coupling includes a meshing tube, a fixing bolt, and a shock-absorbing spring. One end of the meshing tube has an annular protrusion on its outer side, and an opening for installing the fixing bolt is radially formed on the outer side of the protrusion. The other end of the meshing tube has a serrated opening. Both the input shaft and the lifting main shaft of the secondary gear accelerator are provided with meshing tubes, and the open ends of the two meshing tubes mesh with each other. The shock-absorbing spring is arranged between the two meshing tubes.

[0010] Preferably, the bite teeth at the opening end of the bite tube are all chamfered.

[0011] Preferably, the secondary gear accelerator includes an output shaft, a bottom shell, a large gear, planetary gears, a planetary carrier, a top shell, fixing screws, and an input shaft. The output shaft is connected to the input shaft of the three-box generator. The top shell is a disc with one open end, and it is connected to the open end of the bottom shell by fixing screws. The bottom shell is arranged on the wind turbine base. Two sets of planetary gear sets with transmission arrangement are arranged inside the bottom shell. Each set of planetary gear sets is equipped with a large gear, which is a fixedly arranged gear ring. Both sets of planetary gear sets use a planetary carrier as the power input end and a sun gear as the power output end. One end of the input shaft is connected to the lifting main shaft through the flexible coupling. The other end of the input shaft is equipped with three output shafts, and the planetary gears are connected through these output shafts. The planetary gears mesh with the sun gear and the large gear, which are the power output ends.

[0012] Preferably, the top of the fan protective housing has a slot, and a push rod motor is installed at the bottom of the slot. The output end of the push rod motor is connected to a lifting platform that is vertically slidably arranged in the slot. The air guide protection blades are installed on the lifting platform and rotate vertically by the motor.

[0013] Preferably, the wind guide protection blade is a two-stage liftable blade, and a push rod motor is installed inside the wind guide protection blade. The horizontal cross-section of the wind guide protection blade is elliptical.

[0014] A control method for a high-voltage tower-mounted H-type wind turbine includes the following steps: Step 1: Determine the wind force based on the real-time power generation displayed by the power meter mounted on the three-box generator and the recorded power generation fluctuations; Step 2: Adjust the lifting blades according to the determined wind force. When the wind force is high, control the push rod motor of the telescopic connecting rod to retract, causing the telescopic connecting rod to retract and reduce the pitch; when the wind force is low, control the push rod motor of the telescopic connecting rod to extend, causing the telescopic connecting rod to extend and increase the pitch; Step 3: When the wind force is too high, control the push rod motor located at the bottom of the slot in the wind turbine protective housing to extend, pushing the wind guide protection blade out of the wind turbine protective housing so that the telescopic blade is located inside the wind guide protection blade. Then, control the motor on the lifting platform to drive the wind guide protection blade to rotate, guiding the incoming airflow and maintaining the high power generation of the three-box generator. Step 4: When the wind force is too low, control the extension of the lifting main shaft, and drive the telescopic blades to extend through the telescopic connecting rod, so that the top telescopic blade extends out from the telescopic base blade; then control the increase of the blade pitch and adjust the angle of the telescopic blades so that the flat side of the telescopic blades faces the windward side.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. Retractable blades are arranged as drive blades for the lifting main shaft. When the wind is strong, the blades can retract to reduce the force-bearing area and reduce the force on the lifting main shaft. When the wind is weak, the blades can extend to increase the force-bearing area and increase the speed of the lifting main shaft, thereby increasing the power generation of the three-box generator.

[0017] 2. The pitch is adjusted via a telescopic connecting rod, which is horizontally arranged and has a wide range of length adjustment. It is adjusted in real time according to the power output of the three-box generator to obtain the maximum power output under low wind conditions.

[0018] 3. The liftable wind guide blades can surround the telescopic blades in the middle. Through the gap between adjacent wind guide blades, the wind is directed to the telescopic blades, which in turn drives the lifting main shaft to rotate and generate electricity. It filters out the messy wind and avoids the wind direction confusion from reducing the speed of the wind turbine and affecting the power generation efficiency. At the same time, the raised wind guide blades can reduce the erosion of the telescopic blades in the middle by wind and sand, and reduce the wear of the equipment.

[0019] 4. The secondary gear accelerator increases the input speed of the lifting spindle, thereby increasing the input shaft speed of the three-box generator and enabling it to meet normal operating requirements. At the same time, the speed increase will inevitably increase the blade pitch, which in turn will increase the fan blade torque and decrease the fan blade speed. The secondary gear accelerator can maintain the stable power generation of the three-box generator.

[0020] 5. The flexible coupling can achieve a stable connection between the lifting spindle and the input shaft, keeping the lifting spindle and the input shaft rotating coaxially. The arrangement of the springs can correct the spindle deviation, ensuring that the lifting spindle and the input shaft are in a collinear state, reducing the offset caused by equipment wear; and the flexible design can reduce the vibration caused by the high-speed rotation of the spindle, avoiding vibration damage to the internal precision equipment, and making the fan run smoothly.

[0021] 6. The inner side of the telescopic fan blade is flat, and the outer side is curved. The telescopic fan blade can rotate vertically. The wind-receiving area of ​​the fan blade can be adjusted by a small self-rotating motor, so that the posture of the telescopic fan blade changes with the wind speed, thereby maximizing the power generation.

[0022] 7. The bottom of the lifting spindle is located inside the fan protective housing, and the lifting spindle can be extended and adjusted, which reduces the wind force on the lifting spindle and improves the stability of the lifting spindle in use. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention.

[0024] Figure 2 This is a front view of an embodiment of the present invention.

[0025] Figure 3 This is a schematic diagram of the internal structure of an embodiment of the present invention.

[0026] Figure 4 This is a top view of an embodiment of the present invention.

[0027] Figure 5 This is an exploded view of the secondary gear accelerator in an embodiment of the present invention.

[0028] Figure 6 This is a perspective view of the flexible coupling in an embodiment of the present invention.

[0029] Figure 7 This is a cross-sectional view of the flexible coupling in an embodiment of the invention.

[0030] Figure 8 This is a diagram of fan blade retraction (lifting spindle raised) in an embodiment of the present invention.

[0031] Figure 9 This is a diagram of fan blade retraction (lifting main shaft lowering) in an embodiment of the present invention.

[0032] Figure 10 This is a diagram of the fan blade extension (lifting main shaft lowered) in an embodiment of the present invention.

[0033] Figure 11 This is a diagram of fan blade extension (lifting spindle raised) in an embodiment of the present invention.

[0034] Figure 12 This is a diagram showing the air guide and protection fan blades rising in an embodiment of the present invention.

[0035] In the above attached diagram: 1. Three-box generator; 3. Wind guide protection blades; 4. Fan blade cover; 5. Telescopic base blades; 6. Telescopic top blades; 7. Telescopic connecting rod; 8. Lifting main shaft; 9. Flexible coupling; 10. Fan protective housing; 11. Base bracket; 12. Fan base; 13. Main shaft fixing cylinder; 14. Main shaft bearing; 15. Output shaft; 16. Bottom shell; 17. Large gear; 18. Planetary gear; 19. Planetary carrier; 20. Top shell; 21. Fixing screw; 22. Input shaft; 23. Fixing bolt; 24. Engagement tube; 25. Shock-absorbing spring. Detailed Implementation

[0036] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0037] like Figure 1-11 As shown, to improve the strength of the wind turbine and increase its pitch range, this invention proposes a high-voltage tower-mounted H-type wind turbine, including a three-box generator 1, a wind turbine base 12 mounted on the three-box generator 1, and a two-stage gear accelerator and a lifting main shaft 8 arranged on the wind turbine base 12. The input shaft of the two-stage gear accelerator is connected to the lifting main shaft 8 via a flexible coupling 9, and the output shaft of the two-stage gear accelerator is connected to the input shaft of the three-box generator 1. A wind turbine protective shell 10 is arranged around the wind turbine base 12, and liftable wind guide blades 3 are arranged in a ring around the wind turbine protective shell 10. The lifting main shaft 8 is connected to the telescopic blades via a telescopic connecting rod 7. The telescopic blades can extend and retract along the axial direction of the lifting main shaft 8. When the wind guide blades 3 are lifted, the telescopic blades are located inside the wind guide blades 3.

[0038] The telescopic blades are connected to the lifting main shaft 8. The telescopic adjustment of the blades is achieved by adjusting the extension and retraction of the lifting main shaft 8. The lifting main shaft 8 adjusts the height of the blades according to the wind speed. When the wind speed is low, the blades are raised to increase the wind-receiving area and facilitate startup. When the wind speed is high, the blades are lowered to reduce the wind-receiving area and prevent blade stall. The fan base 12 has a disc-shaped structure. The bottom of the fan base 12 is connected to the base bracket 11. A generator compartment is located in the center of the bottom of the base bracket 11, and the three-box generator 1 is installed in the generator compartment. A ring-shaped support frame is arranged around the outer ring of the fan base 12, supporting the secondary gear accelerator. A main shaft fixing cylinder 13 is installed on the top of the fan base 12. A main shaft bearing 14 is installed inside the main shaft fixing cylinder 13. The bottom of the lifting main shaft 8 is rotatably mounted inside the main shaft fixing cylinder 13 via the main shaft bearing 14. A flexible coupling 9 is arranged below the main shaft fixing cylinder 13.

[0039] like Figure 8-11 As shown, the lifting main shaft 8 drives the telescopic blades to extend and retract. The telescopic blades include a telescopic base blade 5 and a telescopic top blade 6. The lifting main shaft 8 includes a solid shaft at the top and a hollow shaft at the bottom. The solid shaft is slidably coaxially arranged on the top of the hollow shaft. A push rod motor for controlling the extension and retraction of the solid shaft is arranged on the hollow shaft. The telescopic connecting rod 7 is connected to both the hollow shaft and the solid shaft, and the telescopic base blade 5 and the telescopic top blade 6 are connected respectively through the telescopic connecting rod 7. The telescopic connecting rod 7 is a linkage structure with a push rod motor.

[0040] The push rod motor is installed inside the hollow shaft of the lifting main shaft 8. The movable end of the push rod motor is fixedly connected to the bottom end of the solid shaft of the lifting main shaft 8. The push rod motor drives the solid shaft of the lifting main shaft 8 to move in the vertical direction. Three telescopic blades are connected to the lifting main shaft 8 through the telescopic connecting rod 7. The telescopic base blade 5 of the telescopic blades is connected to the hollow shaft of the lifting main shaft 8, and the telescopic top blade 6 of the telescopic blades is connected to the solid shaft of the lifting main shaft 8. When the height of the solid shaft of the lifting main shaft 8 is adjusted, the solid shaft drives the telescopic top blade 6 to move synchronously through the telescopic connecting rod 7, so as to realize the length adjustment of the telescopic blades.

[0041] like Figure 4 and Figure 10 As shown, to adjust the wind-receiving area of ​​the telescopic blades, a fan blade connecting shaft is provided at the connection end between the telescopic connecting rod 7 and the telescopic blades. The axial direction of the fan blade connecting shaft is parallel to the axial direction of the telescopic blades. The telescopic blades are fixedly connected to the fan blade connecting shaft. A small rotary motor for controlling the rotation of the fan blade connecting shaft is provided on the telescopic connecting rod 7. The wind-receiving angle of the telescopic blades is adjusted according to the wind direction to increase the wind-receiving area of ​​the telescopic blades. Similarly, the wind-receiving area of ​​the telescopic blades can be adjusted according to the wind speed to maximize power generation.

[0042] like Figure 4 and Figure 10 As shown, to reduce the impact of wind on the rotational speed of the telescopic blades, one side of each blade is a flat surface, and the other side is an arc-shaped surface. The inner sides of the telescopic blades, which are equidistant from the lifting main shaft 8, are all either flat or arc-shaped surfaces. The flat surface on one side of the telescopic blade serves as the windward side, and the arc-shaped surface on the other side serves as the windward side. The arc-shaped surface can guide the airflow and reduce the impact of headwinds on the rotation of the telescopic blades.

[0043] like Figure 6 and Figure 7 As shown, a flexible transmission connection is achieved between the lifting spindle 8 and the secondary gear accelerator. The flexible coupling 9 includes a meshing tube 24, a fixing bolt 23, and a shock-absorbing spring 25. One end of the meshing tube 24 has an annular protrusion on its outer side, and an opening for installing the fixing bolt 23 is radially opened on the outer side of the protrusion. The other end of the meshing tube 24 has a serrated opening. Both the input shaft of the secondary gear accelerator and the lifting spindle are equipped with meshing tubes 24, and the open ends of the two meshing tubes 24 mesh with each other. The shock-absorbing spring 25 is arranged between the two meshing tubes 24. Two engagement tubes 24 are connected to the bottom end of the lifting main shaft 8 and the input end of the secondary gear accelerator, respectively. After the engagement tubes 24 are installed, they are fixed by a fixing bolt 23 at one end with an annular protrusion. Four threaded holes are equidistantly arranged around the axis on the side wall of the annular protrusion. The fixing bolt 23 is threaded into the threaded holes to lock the engagement tubes 24. The two engagement tubes 24 engage through their open ends. The staggered continuous sawtooth arrangement allows for good engagement, making the two engagement tubes 24 form a whole tube with a wavy gap, thereby realizing the transmission of force of the lifting main shaft 8. A shock-absorbing spring 25 is arranged between the two engagement tubes 24. When there is axial displacement between the lifting main shaft 8 and the input end of the secondary gear accelerator, the shock-absorbing spring 25 can be corrected by elastic reset to ensure coaxiality between the lifting main shaft 8 and the input end of the secondary gear accelerator. At the same time, the shock-absorbing spring can reduce the vibration of the lifting main shaft 8 and buffer the huge pressure brought by the large torque, thereby reducing the wear of precision parts inside the fan.

[0044] like Figure 7 As shown, to enhance the strength of the saw teeth and reduce their deformation, the saw teeth at the opening end of the biting tube 24 are all chamfered.

[0045] like Figure 5As shown, to amplify the input speed of the lifting spindle 8, the secondary gear accelerator includes an output shaft 15, a bottom shell 16, a large gear 17, planetary gears 18, a planetary carrier 19, a top shell 20, a fixing screw 21, and an input shaft 22. The output shaft 15 is connected to the input shaft of the three-box generator 1. The bottom shell 16 is a disc with one open end. The top shell 20 is connected to the open end of the bottom shell 16 by the fixing screw 21. The bottom shell 16 is arranged on the fan base 12. Two sets of planetary gear sets are arranged in a transmission configuration inside the bottom shell 16. Each set of planetary gear sets contains a large gear 17, which is a fixed gear ring. Both sets of planetary gear sets use the planetary carrier 19 as the power input end and the sun gear as the power output end. One end of the input shaft 22 is connected to the lifting spindle 8 through the flexible coupling 9. The other end of the input shaft 22 is provided with three output shafts, which are connected to the planetary gears 18. The planetary gears 18 mesh with the sun gear and the large gear, which are the power output ends. Using the planetary carrier 19 as the input end and the sun gear as the output end, the large gear 17 (gear ring) is fixed to achieve speed amplification.

[0046] like Figure 4 , Figure 5 As shown, to achieve the lifting and lowering drive of the air guide protection blade 3, the top of the fan protective housing 10 has a slot, and a push rod motor is installed at the bottom of the slot. The output end of the push rod motor is connected to a lifting platform that is vertically slidably arranged in the slot. The air guide protection blade 3 is installed on the lifting platform and rotates vertically by the motor. The push rod motor is installed at the bottom of the slot, and rectangular openings are provided at both ends of the slot. The openings are parallel to the direction of the slot, and the two ends of the lifting platform are in contact with the inner sidewalls of the openings to guide the lifting platform. When the air guide protection blade 3 is accommodated in the slot, there is a gap between the outer wall of the air guide protection blade 3 and the inner wall of the slot. An opening and closing cover is provided at the top of the air guide protection blade 3. After the lifting platform drives the air guide protection blade 3 to fully enter the slot, the opening and closing cover enters the top of the slot and seals the top of the slot to reduce the intake of dust and rainwater inside the slot, avoid clogging and corrosion of the slot, and prevent affecting the lifting and lowering of the air guide protection blade 3. The top of the lifting platform is equipped with a rotating control rod, and the air guide protection blade 3 is fixedly installed on the rotating control rod. The rotating control rod is driven by a motor to rotate, thereby realizing the rotation of the air guide protection blade 3.

[0047] like Figure 4 As shown. The wind guide protection blade 3 is a two-stage liftable blade, and a push rod motor is installed inside the wind guide protection blade 3. The horizontal cross-section of the wind guide protection blade 3 is elliptical. By guiding the wind direction through the wind guide protection blade 3, turbulence is avoided from reducing the speed of the wind turbine, thus reducing the impact on power generation efficiency. Moreover, the two-stage liftable blade design greatly saves the depth of the slot, saves space, increases the lifting range of the blade, and effectively protects the telescopic blades of the wind turbine.

[0048] A control method for a high-voltage tower-mounted H-type wind turbine includes the following steps: Step 1: Determine the wind force based on the real-time power generation displayed by the power meter mounted on the three-box generator 1 and the recorded power generation fluctuations; Step 2: Adjust the lifting blades according to the determined wind force. When the wind force is high, control the pusher motor of the telescopic connecting rod 7 to retract, thereby reducing the pitch; when the wind force is low, control the pusher motor of the telescopic connecting rod 7 to extend, thereby increasing the pitch; Step 3: When the wind force is excessive, control the pusher motor located at the bottom of the slot in the wind turbine protective housing 10 to extend, pushing the wind guide protection blade 3 out of the wind turbine protective housing 10 so that the telescopic blade is located inside the wind guide protection blade 3. Then, control the motor on the lifting platform to drive the wind guide protection blade 3 to rotate, guiding the incoming airflow and maintaining the high power generation of the three-box generator 1. Step 4: When the wind force is judged to be too low, control the extension of the lifting main shaft 8, and drive the telescopic blades to extend through the telescopic connecting rod 7, so that the telescopic top blade 6 extends out from the telescopic base blade 5; then control the increase of the blade pitch and adjust the angle of the telescopic blades so that the plane side of the telescopic blades faces the windward side.

Claims

1. A high-voltage tower-mounted H-type wind turbine generator, characterized in that: The device includes a three-box generator (1), a wind turbine base (12) mounted on the three-box generator (1), a secondary gear accelerator and a lifting main shaft (8) mounted on the wind turbine base (12). The input shaft of the secondary gear accelerator is connected to the lifting main shaft (8) via a flexible coupling (9). The output shaft of the secondary gear accelerator is connected to the input shaft of the three-box generator (1). A wind turbine protective shell (10) is arranged around the wind turbine base (12). Liftable wind guide protection blades (3) are arranged in a ring around the wind turbine protective shell (10). The lifting main shaft (8) is connected to telescopic blades via a telescopic connecting rod (7). The telescopic blades can extend and retract along the axial direction of the lifting main shaft (8). When the wind guide protection blades (3) are lifted, the telescopic blades are located inside the wind guide protection blades (3). The telescopic blades include telescopic base blades (5) and telescopic top blades (6). The lifting main shaft (8) includes a solid shaft at the top and a hollow shaft at the bottom. The solid shaft is slidably coaxially arranged on the top of the hollow shaft. A push rod motor for controlling the extension and retraction of the solid shaft is arranged on the hollow shaft. The telescopic connecting rod (7) is connected to both the hollow shaft and the solid shaft. The telescopic base blades (5) and the telescopic top blades (6) are connected respectively through the telescopic connecting rod (7). The telescopic connecting rod (7) is a connecting rod structure with a push rod motor. The telescopic connecting rod (7) is provided with a fan blade connecting shaft at the connection end with the telescopic blade. The axial direction of the fan blade connecting shaft is parallel to the axial direction of the telescopic blade. The telescopic blade is fixedly connected to the fan blade connecting shaft. A small rotary motor for controlling the rotation of the fan blade connecting shaft is provided on the telescopic connecting rod (7).

2. The high-voltage tower-mounted H-type wind turbine generator as described in claim 1, characterized in that: One side of the telescopic blade is a plane and the other side is an arc surface. The inner sides of the telescopic blades, which are equidistant from the lifting main shaft (8), are all planes or arc surfaces.

3. The high-voltage tower-mounted H-type wind turbine generator as described in claim 1, characterized in that: The flexible coupling (9) includes a meshing tube (24), a fixing bolt (23), and a shock-absorbing spring (25). One end of the meshing tube (24) has an annular protrusion on its outer side, and an opening for installing the fixing bolt (23) is provided radially on the outer side of the protrusion. The other end of the meshing tube (24) has a serrated opening. The input shaft and the lifting main shaft of the secondary gear accelerator are both equipped with meshing tubes (24), and the opening ends of the two meshing tubes (24) mesh with each other. The shock-absorbing spring (25) is arranged between the two meshing tubes (24).

4. The high-voltage tower-mounted H-type wind turbine generator as described in claim 3, characterized in that: The bite teeth at the opening end of the bite tube (24) are all chamfered.

5. The high-voltage tower-mounted H-type wind turbine generator as described in claim 1, characterized in that: The secondary gear accelerator includes an output shaft (15), a bottom shell (16), a large gear (17), a planetary gear (18), a planetary carrier (19), a top shell (20), a fixing screw (21), and an input shaft (22). The output shaft (15) is connected to the input shaft of the three-box generator (1). The top shell (16) is a disc with one open end. The top shell (20) is connected to the open end of the bottom shell (16) by the fixing screw (21). The bottom shell (16) is arranged on the wind turbine base (12). Two sets of transmissions are arranged inside the bottom shell (16). The planetary gear sets are arranged in a dynamic manner. Each of the two planetary gear sets is equipped with a large gear (17). The large gear (17) is a fixed gear ring. Both planetary gear sets use a planet carrier (19) as the power input end and a sun gear as the power output end. One end of the input shaft (22) is connected to the lifting main shaft (8) through the flexible coupling (9). The other end of the input shaft (22) is equipped with three output shafts, and the planetary gear (18) is connected through the output shafts. The planetary gear (18) meshes with the sun gear and the large gear, which are the power output ends.

6. The high-voltage tower-mounted H-type wind turbine generator as described in claim 1, characterized in that: The top of the fan protective shell (10) has a slot, and a push rod motor is installed at the bottom of the slot. The output end of the push rod motor is connected to a lifting platform that is vertically slidably arranged in the slot. The wind guide protection blade (3) is installed on the lifting platform and rotates vertically by the motor.

7. A high-voltage tower-mounted H-type wind turbine generator as described in claim 6, characterized in that: The wind guide protection blade (3) is a two-stage liftable blade. The wind guide protection blade (3) is equipped with a push rod motor inside. The horizontal cross section of the wind guide protection blade (3) is elliptical.

8. A control method for a high-voltage tower-mounted H-type wind turbine generator, characterized in that, Includes the following steps: Step 1: Determine the wind force based on the real-time power generation displayed by the power meter mounted on the three-box generator (1) and the recorded power generation fluctuations. Step 2: Adjust the lifting blades according to the wind force. When the wind force is large, control the pusher motor of the telescopic connecting rod (7) to retract, which will cause the telescopic connecting rod (7) to retract and reduce the pitch. When the wind force is small, control the pusher motor of the telescopic connecting rod (7) to extend, which will cause the telescopic connecting rod (7) to extend and increase the pitch. Step 3: When it is determined that the wind force is too strong, control the push rod motor arranged at the bottom of the slot in the wind turbine protective shell (10) to extend and push the wind guide protection blade (3) out of the wind turbine protective shell (10), so that the telescopic blade is located inside the wind guide protection blade (3). Then control the motor on the lifting platform to drive the wind guide protection blade (3) to rotate, guide the incoming air, and maintain the high power generation of the three-box generator (1). Step 4: When the wind force is judged to be too low, control the extension of the lifting main shaft (8), and drive the extension blade to extend through the extension connecting rod (7), so that the extension top blade (6) extends out from the extension base blade (5); then control the increase of the blade pitch and adjust the angle of the extension blade so that the plane side of the extension blade faces the windward side.

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