Vertical shaft resistance type light wind driven generator and control method thereof

Abstract

The invention belongs to the technical field of wind driven generators, and discloses a vertical shaft resistance type light wind driven generator and a control method thereof.The vertical shaft resistance type light wind driven generator comprises a wind wheel, the wind wheel comprises a wind wheel support, and a plurality of wind gathering scoop assemblies are annularly and evenly arranged on the wind wheel support at intervals; the wind gathering bucket assembly can rotate relative to the wind wheel support, a control system is arranged on the wind wheel support, and a 180-degree acting area and a 180-degree reverse acting area are formed when the wind wheel rotates by a circle. The control system controls the wind gathering scoop assembly to rotate in real time according to the wind direction change to adjust the angle of the windward side of the wind gathering scoop assembly, so that the windward side of the wind gathering scoop assembly located in the acting area is always aligned with incoming wind, the included angle between the windward side of the wind gathering scoop assembly in the reverse acting area and the incoming wind side is 90 degrees, and the reverse acting of the wind gathering scoop assembly in the reverse acting area is minimum; according to the invention, wind energy is fully utilized by adopting the wind gathering buckets, so that the generator can be started in a breeze state.

Description

Technical Field

[0001] The invention belongs to the technical field of wind turbines, and in particular relates to a vertical axis resistance type light wind turbine and a control method thereof. Background Art

[0002] Wind turbines can be roughly divided into two types according to the structure of the wind rotor and its position in the airflow: one is the horizontal axis wind turbine; the other is the vertical axis wind turbine; the horizontal axis wind turbine is currently the most technologically mature type of wind turbine; the wind rotor of the horizontal axis wind turbine rotates around a horizontal axis, and when working, the rotation plane of the wind rotor is perpendicular to the wind direction; the blades on the wind rotor are radially arranged, perpendicular to the rotation axis, and form an angle φ (installation angle) with the rotation plane of the wind rotor; although horizontal axis wind turbines are the most widely used, there are also some technical problems: high linear speed, high noise, operating noise of 80-90 decibels, high noise pollution, affecting people's normal life, and there are radiation sources, which affect the migration of migratory birds and have a high lethality to migratory birds.

[0003] Vertical axis wind turbines can be divided into two types: one is a resistance-type wind turbine that uses aerodynamic resistance to do work. Its advantages are large starting torque, slow linear speed, low rotation speed, and low noise. It can start generating electricity and connect to the grid at level 2 wind speed. Its disadvantages are low work efficiency at level 5 and 6 wind speeds, and it lacks competitiveness for power generation.

[0004] The other type is a lift-type wind turbine that uses the lift of the airfoil to do work. Compared with a resistance-type wind turbine, this lift-type wind turbine has a higher wind energy utilization rate, can run at high speeds, and has a high linear speed, but its starting torque is small, and it is generally difficult to achieve self-starting at low wind speeds.

[0005] The patent application number is: CN200910071705.1, which discloses a variable angle of attack drag and lift hybrid vertical axis wind turbine, including a power conversion device, a generator, a generator V-belt pulley mechanism, a main shaft, a sleeve, a cantilever bracket, and blades; the main shaft is directly connected to the sleeve through a bearing, the sleeve is connected to the cantilever bracket, the cantilever bracket is provided with a blade rotating device, and the top of the main shaft is provided with a wind vane; the optimal angle of attack control of wind energy utilization of four blades driven by a motor is realized through a multiple synchronous belt mechanism; the low-voltage alternating current output by the generator is rectified by an inverter and output as direct current to charge a battery pack to provide power for the blade rotating device; the wind vane is connected to a main controller, and the main controller controls the blade rotating device.

[0006] The above-mentioned existing vertical axis wind turbines use a blade rotating device to drive each blade to rotate automatically so that the blades have an optimal angle of attack. However, when the existing vertical axis wind turbines are in use, because the blades are airfoil lift blades, the resistance to wind is relatively small and the wind energy cannot be fully utilized. As a result, in the case of a breeze, it is impossible to start power generation. In addition, the wind speed is too high, causing the wind wheel speed to increase, and the blades also need to rotate automatically, causing the blades to vibrate, resulting in serious fatigue and damage to the blades, reducing the use effect. In addition, the overall degree of automation is low, and the wind energy cannot be fully utilized, reducing the use effect. Summary of the invention

[0007] The main technical problem to be solved by the present invention is to provide a vertical axis resistance type light wind wind turbine and its control method, which has a simple overall structure and adopts a wind concentrator to fully utilize wind energy so that the generator can be started in a breeze state, and the wind direction and wind wheel speed are monitored in real time through the control system, and the angle of the wind concentrator is intelligently adjusted to achieve the purpose of automatic adjustment.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: A vertical axis resistance type light wind wind turbine comprises a wind wheel, which comprises a wind wheel bracket, on which a plurality of wind collecting scoop assemblies are arranged in a ring shape and at even intervals, the wind collecting scoop assemblies can rotate relative to the wind wheel bracket, and a control system is arranged on the wind wheel bracket, when the wind wheel rotates one circle, the wind collecting scoop assemblies are divided into a 180° working area and a 180° anti-working area; the control system controls the wind collecting scoop assemblies to rotate in real time according to the change of wind direction to adjust the angle of the windward surface of the wind collecting scoop assemblies, so that the windward surface of the wind collecting scoop assemblies in the working area is always aligned with the incoming wind, and the windward surface of the wind collecting scoop assemblies in the anti-working area is 90° with the incoming wind surface, so that the anti-working of the wind collecting scoop assemblies in the anti-working area is minimized.

[0009] The following is a further optimization of the above technical solution by the present invention: The wind wheel is rotatably mounted on a tower, a support base is fixedly mounted on the top of the tower, and a brake assembly for applying a load to the wind wheel, a power supply assembly for powering a control system, and a detection assembly for detecting the rotation speed of the wind wheel are respectively mounted on the support base.

[0010] Further optimization: the wind wheel bracket includes a vertical main shaft, a mounting seat is fixedly installed on the upper end of the vertical main shaft, the vertical main shaft is rotatably installed on the support seat, a plurality of mounting brackets are fixedly installed on the mounting seat, a wind concentrator mounting frame is fixedly installed on the other end of the mounting bracket, and the wind concentrator components are respectively installed on the wind concentrator mounting frame.

[0011] Further optimization: The overall structure of the wind concentrator assembly includes a wind concentrator, the cross-section of the wind concentrator is an arc-shaped groove, the interior of the wind concentrator is provided with an open arc-shaped inner cavity, a central axis is vertically arranged inside the wind concentrator, and the upper and lower ends of the central axis extend to the outer sides of the upper and lower ends of the wind concentrator respectively and are rotatably installed on the wind concentrator mounting frame.

[0012] Further optimization: a wind concentrator driving component is fixedly installed on the upper end or the lower end of the wind concentrator mounting frame, and is used to drive the wind concentrator to rotate so as to adjust the angle between the windward surface and the incoming wind surface of the wind concentrator; the wind concentrator driving component includes a servo drive motor, and a reducer is transmission-connected to the power output end of the servo drive motor, and the power output end of the reducer is transmission-connected to one end of the corresponding central shaft.

[0013] Further optimization: an inclination angle α is set between the windward surface of the wind concentrating scoop and the vertical surface, and the inclination angle α is 1-4°.

[0014] Further optimization: the control system includes a control box, which is fixedly installed above the mounting base and rotates synchronously with the wind wheel; a main controller and a battery are installed in the control box, and the input end of the main controller is electrically connected to a wind vane; the output end of the detection component is electrically connected to the input end of the main controller, and the detection component is used to detect the real-time rotation speed of the central shaft and send it to the main controller.

[0015] Further optimization: the output end of the main controller is electrically connected to the control end of the brake assembly; the output end of the main controller is electrically connected to the control end of the corresponding servo drive motor through multiple servo control circuits; the main controller is provided with a preset threshold value of the rated speed of the wind wheel and a preset threshold value of the maximum speed of the wind wheel; The conductive arm output end of the power supply assembly is electrically connected to the power supply end of the servo drive motor through the power supply circuit.

[0016] The present invention also provides a control method for a vertical axis resistance type light wind wind turbine. Based on the vertical axis resistance type light wind wind turbine, the control method includes a breeze start-up process, a normal working process and a braking speed reduction process. The breeze start process is carried out as follows: W1. First, the wind vane detects the incoming wind direction and sends it to the main controller. The main controller determines the incoming wind direction as the 0° reference point during the rotation of the wind rotor. When the wind rotor rotates one circle, 0°-180° is the working area, and 180°-360° is the anti-working area. W2, when one wind concentrator assembly on the wind wheel is located at the 0° reference point, along the rotation direction of the wind wheel, two of the remaining four wind concentrator assemblies are located in the working area; the other two wind concentrator assemblies are located in the anti-working area; W3, the main controller sends a control signal to control the servo drive motor on each wind collecting bucket assembly to work, and the servo drive motor is used to drive the central shaft to drive the wind collecting bucket to rotate. At this time, when each wind collecting bucket rotates one circle with the wind wheel, the windward side and the windward side of the wind collecting bucket have three working angles, namely 130°, 180° and 90°; the working angle of the wind collecting bucket at the 0° reference point of the wind wheel is 130°; the working angle of the wind collecting bucket in the working area is 180°; the working angle of the wind collecting bucket in the anti-working area is 90°; W4. After the natural wind enters the wind collecting bucket, the force of the natural wind generates thrust on the wind wheel, causing the wind wheel to rotate; W5, the working angle of the wind collecting bucket at the 0° reference point on the wind wheel is 130°. When the wind collecting bucket at the 0° reference point rotates to the 50° rotation position of the wind wheel, the main controller controls the corresponding servo drive motor to drive the wind collecting bucket to decelerate and rotate, so that the working angle of the wind collecting bucket rotates counterclockwise from 130° to 180°; W6. When the wind collecting bucket rotates from the 50° rotation position of the wind wheel to the 180° rotation position of the wind wheel, the main controller controls the corresponding servo drive motor to drive the wind collecting bucket to rotate normally counterclockwise, so that the working angle of the wind collecting bucket is always maintained at 180°. At this time, the windward surface of the wind collecting bucket is always parallel to the incoming wind surface, ensuring that the wind collecting bucket rotating in the working area is subjected to the maximum thrust of the natural wind, so that the wind wheel rotates smoothly; W7. When the wind collecting bucket rotates from the 180° rotation position of the wind wheel to the 230° rotation position of the wind wheel, the main controller controls the corresponding servo drive motor to drive the wind collecting bucket to rotate clockwise at a reduced speed, so that the working angle of the wind collecting bucket rotates from 180° to 90°; W8. When the wind collecting bucket rotates from the 230° rotation position of the wind wheel to the 320° rotation position of the wind wheel, the main controller controls the corresponding servo drive motor to drive the wind collecting bucket to rotate clockwise, so that the working angle of the wind collecting bucket is always maintained at 90°; the natural wind acts on the side elevation of the wind collecting bucket, and the outer surface of the wind collecting bucket is an arc surface, which reduces the wind resistance area and enables the wind wheel to obtain the maximum work force; W9. When the wind concentrator rotates from the 320° rotation position of the wind wheel to the 0° reference point of the wind wheel, the main controller controls the corresponding servo drive motor to drive the wind concentrator to accelerate counterclockwise rotation, so that the working angle of the wind concentrator rotates from 90° to 130°.

[0017] Further optimization: The normal working process is carried out as follows: Z1. The main controller is provided with a preset threshold value of the rated speed of the wind rotor, and the preset threshold value of the rated speed of the wind rotor is 20 rpm; Z2, the detection component is used to detect the real-time rotation speed of the wind rotor at all times and send it to the main controller, which compares the real-time rotation speed with the preset threshold of the rated rotation speed of the wind rotor; Z3. When the real-time speed is less than the preset threshold of the wind rotor rated speed, the main controller controls the wind rotor to execute the breeze start process; Z4. When the real-time speed is greater than the preset threshold of the rated speed of the wind wheel, the main controller sends a control signal to control each servo drive motor to drive the windward surface of the wind focusing bucket to rotate to 180° and lock it, so that the wind focusing bucket no longer rotates on its own. At this time, the wind focusing bucket revolves with the wind wheel; The braking and speed reduction process is carried out in the following steps: S1. The main controller is provided with a preset threshold value of the maximum speed of the wind wheel, and the preset threshold value of the maximum speed of the wind wheel is 30 revolutions per minute; S2, the detection component is used to detect the real-time rotation speed of the wind wheel at all times and send it to the main controller, and the main controller compares the real-time rotation speed with the preset threshold value of the maximum rotation speed of the wind wheel; S3. When the real-time rotation speed is less than the preset threshold value of the maximum rotation speed of the wind wheel, the main controller controls the wind wheel to perform normal working procedures; S4. When the real-time rotation speed is greater than the preset threshold of the maximum rotation speed of the wind wheel, the main controller sends a control signal to control the operation of the brake assembly. At this time, the brake assembly brakes the vertical main shaft to reduce the rotation speed of the vertical main shaft and the wind wheel, so that the real-time rotation speed of the wind wheel remains less than or equal to the preset threshold of the maximum rotation speed of the wind wheel.

[0018] The present invention adopts the above technical solution and has the following beneficial effects: In the present invention, a main controller is used to control each servo drive motor to drive the wind collecting bucket to rotate clockwise and counterclockwise, so that the working angle of the wind collecting bucket assembly in the working area is 180°, so that the windward surface of the wind collecting bucket assembly is always aligned with the incoming wind, and the working angle of the wind collecting bucket assembly in the reverse working area is 90°, so that the reverse work of the wind collecting bucket assembly in the reverse working area is minimized; and it is also possible that when the wind wheel rotates one circle, the instantaneous position of each wind collecting bucket assembly can achieve optimal work, so that the wind wheel can obtain the maximum work force, and the wind wheel can be started in a breeze state.

[0019] When the wind vane detects that the incoming wind direction changes, the wind vane sends a detection signal to the main controller, and the main controller re-determines that the incoming wind direction is the 0° reference point during the rotation of the wind wheel; then the main controller executes the breeze start process again to ensure that the windward surface of the wind focusing bucket assembly is always aligned with the incoming wind when it is in the working area, and when the wind focusing bucket assembly is in the reverse working area, the working angle of the wind focusing bucket assembly is 90°, so that the reverse work of the wind focusing bucket assembly in the reverse working area is minimized; the instantaneous position of each wind focusing bucket assembly achieves the optimal work, so that the wind wheel can obtain the maximum work force.

[0020] In the present invention, when the real-time rotation speed of the wind wheel is less than the preset threshold value of the rated rotation speed of the wind wheel, the main controller controls the wind wheel to execute the breeze starting process; when the real-time rotation speed of the wind wheel is greater than the preset threshold value of the rated rotation speed of the wind wheel, the main controller controls each servo drive motor to drive the windward surface of the wind focusing bucket to rotate to 180° and then lock it, so that the wind focusing bucket no longer rotates on its own, and at this time the wind focusing bucket revolves with the wind wheel.

[0021] In the present invention, when the real-time rotation speed of the wind wheel is greater than the preset threshold of the wind wheel rated rotation speed and less than the preset threshold of the wind wheel maximum rotation speed, the main controller controls the wind wheel to perform normal working procedures; when the real-time rotation speed of the wind wheel is greater than the preset threshold of the wind wheel maximum rotation speed, the main controller controls the brake assembly to perform a braking operation, thereby applying a load to the vertical main shaft to reduce the rotation speed of the vertical main shaft, thereby reducing the rotation speed of the wind wheel, so that the real-time rotation speed of the wind wheel remains less than or equal to the preset threshold of the wind wheel maximum rotation speed, thereby achieving full protection of the vertical axis resistance type light wind wind turbine, avoiding the risk of the generator burning out or collapsing due to excessive rotation speed of the wind wheel.

[0022] The present invention is further described below in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a wind wheel in an embodiment of the present invention; Figure 3 Schematic diagram of the structure of the wind focusing scoop assembly in an embodiment of the present invention; Figure 4 Schematic diagram of the installation structure of a single wind concentrator and a wind wheel support in an embodiment of the present invention Figure 5 It is a structural schematic diagram of a single wind concentrating bucket in an embodiment of the present invention; Figure 6 A side view of a wind concentrator in an embodiment of the present invention; Figure 7 It is a structural schematic diagram of the support bearing assembly in an embodiment of the present invention; Figure 8 It is a schematic diagram of the structure at the vertical main axis in an embodiment of the present invention; Fig. 9 It is a structural schematic diagram of a brake assembly in an embodiment of the present invention; Fig.10 It is a schematic diagram of the structure of the power supply component and the detection component in an embodiment of the present invention; Fig.11 is a schematic diagram of a control system in an embodiment of the present invention; Fig.12 Schematic diagram of the working angle of the wind focusing scoop assembly when the wind wheel rotates in an embodiment of the present invention.

[0024] In the figure: 1-tower; 2-wind wheel; 21-wind wheel bracket; 22-vertical main shaft; 23-mounting seat; 24-mounting bracket; 25-wind scoop mounting frame; 3-wind scoop assembly; 31-wind scoop; 32-central axis; 33-support frame; 34-reinforcement rib; 35-servo drive motor; 36-reducer; 37-rotation support assembly; 371-outer ring body; 372-outer ring mounting seat; 373-inner ring body; 374- Connecting ring body; 38-bearing assembly; 4-brake assembly; 41-hinge seat; 42-arc brake arm; 43-brake block; 44-brake disc; 45-connecting seat; 46-gearbox; 47-screw; 48-hinge head; 5-power supply assembly; 51-power supply ring; 52-support; 53-conductive arm; 6-detection assembly; 61-detection gear; 62-encoder; 63-connecting rod; 7-support seat; 71-installation sleeve. DETAILED DESCRIPTION

[0025] like Figure 1-12 As shown: a vertical axis resistance type light wind wind turbine, including a wind wheel 2, the wind wheel 2 includes a wind wheel bracket 21, and the wind wheel bracket 21 is provided with a plurality of wind collecting scoop assemblies 3 in a ring shape and evenly spaced, the wind collecting scoop assembly 3 can rotate relative to the wind wheel bracket 21, and the wind wheel bracket 21 is provided with a control system, when the wind wheel 2 rotates one circle, it is divided into a 180° working area and a 180° reverse working area; the control system controls the wind collecting scoop assembly 3 to rotate in real time according to the change of wind direction to adjust the angle of the windward surface of the wind collecting scoop assembly 3, so that the windward surface of the wind collecting scoop assembly 3 in the working area is always aligned with the incoming wind, and the windward surface of the wind collecting scoop assembly 3 in the reverse working area is 90° with the incoming wind surface, so that the reverse work of the wind collecting scoop assembly 3 in the reverse working area is minimized.

[0026] In this embodiment, the wind wheel 2 is rotatably mounted on a tower 1, and a support seat 7 is fixedly mounted on the top of the tower 1. A brake assembly 4 for applying a load to the wind wheel 2, a power supply assembly 5 for powering the control system, and a detection assembly 6 for detecting the rotational speed of the wind wheel 2 are respectively mounted on the support seat 7.

[0027] The wind wheel support 21 includes a vertical main shaft 22 , a mounting seat 23 is fixedly mounted on the upper end of the vertical main shaft 22 , and the vertical main shaft 22 is rotatably mounted on the support seat 7 .

[0028] A mounting sleeve 71 is fixedly mounted in the middle of the support seat 7 , and the lower end of the vertical main shaft 22 is rotatably mounted in the mounting sleeve 71 . A bearing assembly for supporting the vertical main shaft 22 to rotate is arranged in the mounting sleeve 71 .

[0029] In this embodiment, the bearing assembly is a prior art, and a combination of various bearings such as thrust bearings and roller bearings can be used to rotatably install the vertical main shaft 22.

[0030] In this embodiment, the support seat 7 is arranged on the top of the tower 1 , and the mounting sleeve 71 is arranged inside the upper end of the tower 1 .

[0031] In this embodiment, the number of the wind focusing scoop components 3 is five, and the five wind focusing scoop components 3 are ring-shaped and arranged at intervals.

[0032] A plurality of mounting brackets 24 are fixedly mounted on the mounting seat 23 , a wind collecting scoop mounting frame 25 is fixedly mounted on the other end of the mounting bracket 24 , and the wind collecting scoop assembly 3 is mounted on the wind collecting scoop mounting frame 25 .

[0033] In this embodiment, the number of the mounting bracket 24 and the wind concentrator mounting bracket 25 matches the number of the wind concentrator assemblies 3, the mounting bracket 24 is composed of multiple support rods, the wind concentrator mounting bracket 25 is fixedly mounted on the mounting bracket 24, and the wind concentrator mounting bracket 25 is made of multiple square metal pipes welded together.

[0034] At least one group of wind concentrator components 3 is disposed on each wind concentrator mounting frame 25 , and the wind concentrator components 3 are arranged along the height direction of the wind concentrator mounting frame 25 .

[0035] In this embodiment, two wind concentrating scoop assemblies 3 are provided on each wind concentrating scoop mounting frame 25, and the two wind concentrating scoop assemblies 3 are arranged along the height direction of the wind concentrating scoop mounting frame 25. Such a design can reduce the overall height of each wind concentrating scoop assembly 3, thereby facilitating manufacturing and production, and facilitating assembly and installation.

[0036] The overall structure of the wind concentrating scoop assembly 3 includes a wind concentrating scoop 31, the cross-section of the wind concentrating scoop 31 is an arc-shaped groove, the interior of the wind concentrating scoop 31 is provided with an open arc-shaped inner cavity, a central axis 32 is vertically provided inside the wind concentrating scoop 31, the central axis 32 is arranged along the height direction of the wind concentrating scoop 31, and the upper and lower ends of the central axis 32 extend to the outer sides of the upper and lower ends of the wind concentrating scoop 31 respectively.

[0037] A plurality of support frames 33 are disposed on the central axis 32 . The plurality of support frames 33 are arranged at intervals along the height direction of the central axis 32 . The other ends of the support frames 33 are fixedly mounted on the inner surface of the wind focusing scoop 31 .

[0038] Reinforcement ribs 34 are respectively arranged on the inner surface of the wind concentrating scoop 31 at positions close to the support frame 33 , and the reinforcement ribs 34 are fixedly installed on the inner surface of the wind concentrating scoop 31 .

[0039] The upper and lower ends of the central shaft 32 are rotatably mounted on the wind collecting scoop mounting frame 25 through supporting bearing assemblies respectively. The wind collecting scoop 31 can be rotatably mounted on the wind collecting scoop mounting frame 25 through the rotatable connection between the central shaft 32 and the wind collecting scoop mounting frame 25, so that the wind collecting scoop 31 can be rotated to adjust the angle between the windward surface and the incoming wind surface of the wind collecting scoop 31, which is convenient for use.

[0040] The support bearing assembly includes a rotating support assembly 37 and a bearing assembly 38. A group of rotating support assemblies 37 and bearing assemblies 38 are fixedly installed on the central shaft 32 near its two ends. The rotating support assemblies 37 and bearing assemblies 38 are staggered, and the outer surface diameter and inner surface diameter of the rotating support assembly 37 are larger than the outer surface diameter and inner surface diameter of the bearing assembly 38; the outer surfaces of the rotating support assembly 37 and the bearing assembly 38 are fixedly installed on the wind gathering scoop mounting frame 25 respectively.

[0041] The rotating support assembly 37 includes an outer ring body 371 sleeved on the outside of the central shaft 32 . The outer ring body 371 is fixedly mounted on an outer ring mounting seat 372 , and the outer ring mounting seat 372 is fixedly mounted on the wind collecting scoop mounting frame 25 .

[0042] In this embodiment, a plurality of bolts are used to realize fixed installation between the outer ring body 371 and the outer ring mounting seat 372 and between the outer ring mounting seat 372 and the wind collecting scoop mounting frame 25.

[0043] The inner side of the outer ring body 371 is rotatably connected to the inner ring body 373, and the outer ring body 371 and the inner ring body 373 are rotatably connected via rolling bodies. The inner side of the inner ring body 373 is sleeved with a connecting ring body 374, and the connecting ring body 374 is fixedly mounted on the central shaft 32 via a connecting plate.

[0044] The connecting ring body 374 and the inner ring body 373 are slidably connected.

[0045] With this design, the rotation of the central shaft 32 drives the connecting ring body 374 to rotate, and the rotation of the connecting ring body 374 drives the inner ring body 373 to rotate. At this time, the outer ring body 371 is used to support the inner ring body 373 to rotate, which is convenient for use. The inner ring body 373 and the outer ring body 371 cooperate to support the rotation of the central shaft 32, and the bearing assembly 38 cooperates to support the rotation of the central shaft 32.

[0046] In this embodiment, the wind wheel 2 works as a whole in the external environment, so the wind focusing bucket assembly 3 as a whole is easily affected by the ambient temperature, which makes the wind focusing bucket 31 prone to thermal expansion and contraction. When thermal expansion and contraction occur on the wind focusing bucket 31, the overall height dimension of the wind focusing bucket 31 will become longer or shorter. The connecting ring body 374 and the inner ring body 373 are slidably connected. At this time, the connecting ring body 374 can move axially relative to the inner ring body 373 to adapt to the thermal expansion and contraction of the wind focusing bucket 31.

[0047] A wind concentrating scoop driving assembly for driving the wind concentrating scoop 31 to rotate and adjust the angle between the windward surface and the incoming wind surface of the wind concentrating scoop 31 is fixedly mounted on the upper end or the lower end of the wind concentrating scoop mounting frame 25 .

[0048] The wind collecting scoop driving assembly includes a servo driving motor 35 , a reducer 36 is drivingly connected to the power output end of the servo driving motor 35 , and the power output end of the reducer 36 is drivingly connected to one end of the corresponding central shaft 32 .

[0049] In this embodiment, the speed reducer 36 is fixedly mounted on the wind collecting scoop mounting frame 25 .

[0050] The servo drive motor 35 drives the reducer 36 to rotate. At this time, the reducer 36 outputs rotational power to drive the central shaft 32 to rotate forward and reverse. At this time, the central shaft 32 can drive the wind collecting scoop 31 to rotate forward and reverse, so as to adjust the angle between the windward side and the incoming wind side of the wind collecting scoop 31, which is convenient for use.

[0051] An electromagnetic brake assembly may also be installed on the upper portion of the central shaft 32 . The electromagnetic brake assembly is fixedly mounted on the wind collecting scoop mounting frame 25 . The electromagnetic brake assembly is used to brake the central shaft 32 to prevent the wind collecting scoop 31 from rotating.

[0052] The electromagnetic brake assembly is optionally installed. When the servo drive motor 35 stops rotating and the braking force of the servo drive motor 35 cannot meet the braking of the wind gathering scoop 31, an external electromagnetic brake assembly can be used to brake the rotation of the wind gathering scoop 31. When the servo drive motor 35 stops rotating, the wind gathering scoop 31 cannot rotate during the revolution, and the external electromagnetic brake assembly is not required.

[0053] In this embodiment, an inclination angle α is set between the windward surface of the wind focusing scoop 31 and the vertical surface, and the inclination angle α is 1-4°.

[0054] In this embodiment, the inclination angle α between the windward surface of the wind focusing scoop 31 and the vertical plane is preferably 2°.

[0055] In this embodiment, the tilt angle α is determined according to the overall size of the wind wheel 2. When the rotation diameter of the wind wheel 2 is larger, the tilt angle α is increased; when the rotation diameter of the wind wheel 2 is smaller, the tilt angle α is decreased.

[0056] With this design, after the natural wind enters the wind collecting scoop 31, the force of the natural wind acts on the inner surface of the wind collecting scoop 31. At this time, the wind collecting scoop 31 is tilted so that after the natural wind acts on the wind collecting scoop 31, the natural wind will generate an upward lifting force on the wind collecting scoop 31, thereby enabling the wind wheel 2 to have an upward moving force, thereby reducing the pressure of the wind wheel 2 on the tower 1 and ensuring that the wind wheel 2 can rotate smoothly.

[0057] In addition to the present embodiment, the upper and lower ends of the wind collecting scoop 31 are respectively provided with air discharge ports, and the natural wind entering the wind collecting scoop 31 can be discharged outwards through the air discharge ports, which is convenient for use.

[0058] With such a design, when the wind wheel 2 is working, the wind collecting bucket 31 is used to collect natural wind, increase the thrust of natural wind on the wind wheel 2, and ensure that the wind wheel 2 can rotate smoothly. However, when the upper and lower ends of the wind collecting bucket 31 are closed surfaces, after the natural wind enters the arc-shaped inner cavity of the wind collecting bucket 31, the natural wind cannot be discharged smoothly, resulting in the formation of an invisible wind-blocking surface on the wind-facing surface of the wind collecting bucket 31. At this time, the force-bearing surface of the wind collecting bucket 31 is concentrated on the wind-blocking surface, thereby reducing the thrust of natural wind on the wind collecting bucket 31.

[0059] In the present invention, the upper and lower ends of the wind collecting scoop 31 are respectively provided with air discharge ports. At this time, the natural wind entering the arc-shaped inner cavity of the wind collecting scoop 31 is discharged through the air discharge ports under the guidance of the inner surface of the wind collecting scoop 31, so that an invisible wind-blocking surface is not formed on the windward surface of the wind collecting scoop 31, thereby ensuring the thrust of the natural wind on the wind collecting scoop 31, so that the wind wheel 2 can rotate smoothly and achieve breeze start-up.

[0060] The brake assembly 4 includes an articulated seat 41 fixedly installed on the support seat 7, and arc-shaped brake arms 42 are respectively hinged on both sides of the articulated seat 41. The arc-shaped brake arms 42 are symmetrically arranged on the outside of the vertical main axis 22, and a brake block 43 is installed on one side surface of the arc-shaped brake arm 42 close to the vertical main axis 22.

[0061] A brake disc 44 is fixedly mounted on the outer surface of the vertical main shaft 22 at a position corresponding to the brake block 43 .

[0062] In the initial state, the inner side surface of the brake block 43 and the outer surface of the brake disc 44 are arranged at intervals. When braking is required, the arc-shaped brake arm 42 is swung in a direction close to each other, so that the inner surface of the brake block 43 contacts the outer surface of the brake disc 44, and the braking and stopping functions of the vertical main shaft 22 are realized through friction.

[0063] A brake driving assembly for driving the two arc-shaped brake arms 42 to swing toward or away from each other is disposed on the support seat 7 at one end of the two arc-shaped brake arms 42 that are close to each other.

[0064] The brake drive assembly includes a connecting seat 45, and the connecting seat 45 is fixedly mounted on the supporting seat 7. A gearbox 46 is fixedly mounted on the upper end of the connecting seat 45, and the gearbox 46 has a power input end and two power output ends.

[0065] The power input end of the gearbox 46 is transmission-connected with a brake motor (not shown in the figure), and the brake motor is fixedly mounted on the gearbox 46. When the brake motor works, it drives the gearbox 46 to work. At this time, the two power output ends of the gearbox 46 rotate forward and reverse to output rotational power.

[0066] The two power output ends of the gearbox 46 are respectively fixedly connected with lead screws 47, and the lead screws 47 are threadedly connected with hinged joints 48. The ends of the two hinged joints 48 away from the lead screws 47 are hinged to the ends of the corresponding arc-shaped brake arms 42 through hinge shafts.

[0067] With such a design, when the brake motor works to drive the two power output ends of the gearbox 46 to rotate forward, the braking action is performed. At this time, the two power output ends of the gearbox 46 respectively drive the corresponding lead screws 47 to rotate, and the lead screws 47 are threadedly connected to the corresponding hinged joints 48. The synchronous rotation of the two lead screws 47 can drive the two hinged joints 48 to move toward each other. At this time, the hinged joints 48 pull the arc-shaped brake arms 42 to move, so that the two arc-shaped brake arms 42 swing toward each other. At this time, the arc-shaped brake arms 42 drive the brake blocks 43 to contact the outer surface of the brake disc 44, and the braking operation of the vertical main shaft 22 is realized through friction.

[0068] When the brake motor works to drive the two power output ends of the gearbox 46 to reverse, the brake release action is executed. At this time, the two power output ends of the gearbox 46 respectively drive the corresponding lead screws 47 to rotate. The lead screws 47 are threadedly connected to the corresponding hinged joints 48. The synchronous rotation of the two lead screws 47 can drive the two hinged joints 48 to move away from each other. At this time, the hinged joints 48 push the arc-shaped brake arms 42 to move, so that the two arc-shaped brake arms 42 swing away from each other. At this time, the arc-shaped brake arms 42 drive the brake blocks 43 to separate from the brake discs 44, thereby releasing the braking operation on the vertical spindle 22 and allowing the vertical spindle 22 to rotate normally.

[0069] The detection component 6 includes a detection gear 61, which is fixedly mounted on a support seat 7. An encoder 62 is provided on one side of the detection gear 61. The encoder 62 is fixedly connected to the vertical main shaft 22 through a connecting rod 63. A transmission gear is fixedly mounted on the detection end of the encoder 62, and the transmission gear is meshed and connected with the detection gear 61.

[0070] With such a design, the vertical main shaft 22 drives the encoder 62 to move in a circle through the connecting rod 63 when rotating. When the encoder 62 moves in a circle, the encoder 62 can be driven to work through the meshing connection between the transmission gear and the detection gear 61. At this time, the encoder 62 is used to detect the rotational speed of the vertical main shaft 22 and output a rotational speed detection signal, which is the rotational speed signal of the wind wheel 2 and is convenient to use.

[0071] The power supply assembly 5 includes a power supply ring 51, which is coaxially sleeved on the outside of the vertical main shaft 22. A plurality of support members 52 are fixedly installed on the outer surface of the power supply ring 51. The support members 52 are insulated from the power supply ring 51, and the lower ends of the support members 52 are fixedly installed on the support seat 7.

[0072] With this design, the power supply ring 51 can be easily installed through the support member 52, and the power supply ring 51 and the support member 52 are insulated, so that the electric energy on the power supply ring 51 will not be transmitted to the support seat 7 through the support member 52, which is convenient for assembly and installation.

[0073] The inner side of the power supply ring 51 is slidably electrically connected to a conductive arm 53 , and the other end of the conductive arm 53 is fixedly mounted on the vertical main shaft 22 .

[0074] The rotation of the vertical main shaft 22 drives the conductive arm 53 to rotate in a circle on the power supply ring 51, and there is a sliding electrical connection between the conductive arm 53 and the power supply ring 51, so that the electric energy on the power supply ring 51 can be transmitted to one side of the vertical main shaft 22 through the conductive arm 53, which is convenient for laying wires.

[0075] In this embodiment, the lower end of the vertical main shaft 22 is electrically connected to a centralizer, a speed increaser and a generator in sequence, and the centralizer and the generator are both existing technologies.

[0076] With such a design, the wind wheel 2 drives the vertical main shaft 22 to rotate under the drive of wind force. The rotation of the vertical main shaft 22 drives the speed increaser to work through the transmission action of the stabilizer. The speed increaser increases the rotation speed of the vertical main shaft 22 and then drives the generator to work. At this time, the generator performs power generation operation.

[0077] The power output end of the generator is electrically connected to a rectifier circuit, and the power output end of the rectifier circuit is electrically connected to an external power grid and a power supply ring 51 .

[0078] The electric energy generated by the generator is rectified by the rectifier circuit, and a small portion of the electric energy is supplied to the power supply ring 51, while the majority of the electric energy is transmitted to the external power grid.

[0079] In this embodiment, the control system includes a control box, which is fixedly mounted above the mounting seat 23 , and the control box rotates synchronously with the wind wheel 2 .

[0080] The control box is equipped with a main controller and a battery. The charging end of the battery is electrically connected to the conductive arm 53 via a wire. The electrical energy on the conductive arm 53 is transmitted to the battery via the wire, thereby supplying power to and charging the battery.

[0081] The power supply end of the battery is electrically connected to the power supply ends of the encoder 62 , the brake motor, the wind vane and the servo drive motor 35 through a power supply circuit, and the battery outputs electrical energy for powering the encoder 62 , the brake motor, the wind vane and the servo drive motor 35 .

[0082] The output end of the conductive arm 53 is electrically connected to the power supply end of the servo drive motor 35 through a power supply circuit. A switching switch is connected between the power supply circuit between the battery and the servo drive motor 35 and between the power supply circuit between the conductive arm 53 and the servo drive motor 35. The control end of the switching switch is electrically connected to the output end of the main controller.

[0083] With such a design, in the initial state, the driving power of the servo drive motor 35 is provided by the battery. When the wind wheel 2 works normally and the generator generates electricity normally, part of the power generated by the generator is transmitted to the power supply ring 51 and the conductive arm 53. At this time, the main controller controls the switching switch to make the power supply circuit between the conductive arm 53 and the servo drive motor 35 conductive. At this time, the power on the conductive arm 53 supplies power to the servo drive motor 35 through the power supply circuit.

[0084] The input end of the main controller is electrically connected to a wind vane, and the wind vane is used to detect the wind direction of natural wind.

[0085] The signal output terminal of the encoder 62 is electrically connected to the input terminal of the main controller, and the real-time rotation speed of the vertical spindle 22 detected by the encoder 62 is sent to the main controller.

[0086] The output end of the main controller is electrically connected to the brake motor of the brake assembly 4, and the main controller outputs a control signal for controlling the brake motor to rotate forward and reverse.

[0087] The main controller is provided with a preset threshold value for the rated speed of the wind rotor and a preset threshold value for the maximum speed of the wind rotor. The real-time speed of the vertical main shaft 22 detected by the encoder 62 is sent to the main controller, and the main controller compares the real-time speed with the preset threshold value for the rated speed of the wind rotor and the preset threshold value for the maximum speed of the wind rotor.

[0088] When the real-time rotation speed is less than the preset threshold of the maximum rotation speed of the wind wheel, the main controller controls the brake motor of the brake assembly 4 to reverse, so that the brake assembly 4 returns to the initial state. At this time, the brake assembly 4 will not brake the vertical main shaft 22.

[0089] When the real-time rotation speed is greater than the preset threshold of the maximum rotation speed of the wind wheel, it indicates that the rotation speed of the wind wheel 2 is too high and braking protection is required. At this time, the main controller sends a control signal to control the forward rotation of the brake motor of the brake assembly 4. At this time, the brake assembly 4 brakes the vertical main shaft 22 to reduce the rotation speed of the vertical main shaft 22, thereby reducing the rotation speed of the wind wheel 2, so that the real-time rotation speed of the wind wheel 2 is less than or equal to the preset threshold of the maximum rotation speed of the wind wheel.

[0090] The output end of the main controller is electrically connected to the corresponding servo drive motor 35 through a plurality of servo control circuits.

[0091] The servo control circuit includes a servo drive module, the output end of the servo drive module is electrically connected to the control end of the servo drive motor 35; the main controller outputs a control signal to control the corresponding servo drive motor 35 to work through the servo drive module.

[0092] A control method for a vertical axis resistance type light wind turbine is provided. Based on the vertical axis resistance type light wind turbine, the control method includes a breeze starting process, a normal working process and a braking and speed reduction process.

[0093] The breeze start process is carried out as follows: W1. First, the wind vane detects the incoming wind direction and sends it to the main controller. The main controller determines that the incoming wind direction is the 0° reference point during the rotation of the wind wheel 2; one rotation of the wind wheel 2 is 360°, and when the wind wheel 2 rotates one circle, 0°-180° is the working area, and 180°-360° is the anti-working area.

[0094] W2. When one wind focusing scoop assembly 3 on the wind wheel 2 is located at the 0° reference point position, along the rotation direction of the wind wheel 2, two of the remaining four wind focusing scoop assemblies 3 are located in the working area; the other two wind focusing scoop assemblies 3 are located in the anti-working area.

[0095] W3, the main controller sends a control signal to control the operation of the servo drive motor 35 on each wind collecting scoop assembly 3, and the servo drive motor 35 is used to drive the central shaft 32 to drive the wind collecting scoop 31 to rotate. At this time, when each wind collecting scoop 31 rotates one circle with the wind wheel 2, the windward side and the incoming wind side of the wind collecting scoop 31 have three working angles, and the three working angles are 130°, 180°, and 90°; among them, the working angle of the wind collecting scoop 31 located at the 0° reference point position of the wind wheel 2 is 130°; the working angle of the wind collecting scoop 31 located in the working area is 180°; and the working angle of the wind collecting scoop 31 located in the anti-working area is 90°.

[0096] In step W3, when the wind wheel 2 is initially started, the generator has not yet started normal power generation. At this time, the working power of the servo drive motor 35 is powered by the battery after the main controller controls the switching switch to operate.

[0097] When the wind wheel 2 is operating normally and the generator is generating electricity normally, part of the electric energy generated by the generator is transmitted to the power supply ring 51 and the conductive arm 53. At this time, the main controller controls the switching switch to operate, so that the power supply circuit between the conductive arm 53 and the servo drive motor 35 is turned on. At this time, the electric energy on the conductive arm 53 supplies power to the servo drive motor 35 through the power supply circuit.

[0098] W4. After the natural wind enters the wind collecting bucket 31, the force of the natural wind acts on the inner surface of the wind collecting bucket 31, and the natural wind generates thrust on the wind wheel 2, causing the wind wheel 2 to rotate. The rotation of the wind wheel 2 drives the vertical main shaft 22 to rotate. The rotation of the vertical main shaft 22 drives the speed increaser to work through the transmission action of the centralizer. The speed increaser increases the rotation speed of the vertical main shaft 22, and then drives the generator to work. At this time, the generator performs power generation operation.

[0099] W5. When the wind wheel 2 rotates one circle, the wind wheel 2 drives each wind collecting scoop assembly 3 to rotate one circle from the 0° reference point of the wind wheel 2 and return to the initial state again. The working angle of the wind collecting scoop 31 at the 0° reference point on the wind wheel 2 is 130°. When the wind collecting scoop 31 at the 0° reference point rotates to the 50° rotation position of the wind wheel 2, the main controller controls the corresponding servo drive motor 35 to drive the wind collecting scoop 31 to decelerate and rotate, so that the working angle of the wind collecting scoop 31 rotates counterclockwise from 130° to 180°.

[0100] W6. When the wind concentrating scoop 31 rotates from the 50° rotation position of the wind wheel 2 to the 180° rotation position of the wind wheel 2, the main controller controls the corresponding servo drive motor 35 to drive the wind concentrating scoop 31 to rotate normally counterclockwise, so that the working angle of the wind concentrating scoop 31 is always maintained at 180°. At this time, the windward surface of the wind concentrating scoop 31 is always parallel to the incoming wind surface, ensuring that the wind concentrating scoop 31 rotating in the working area is subjected to the maximum thrust of the natural wind, thereby allowing the wind wheel 2 to rotate smoothly.

[0101] W7. When the wind concentrator 31 rotates from the 180° rotation position of the wind wheel 2 to the 230° rotation position of the wind wheel 2, the main controller controls the corresponding servo drive motor 35 to drive the wind concentrator 31 to rotate clockwise with reduced speed, so that the working angle of the wind concentrator 31 rotates from 180° to 90°.

[0102] W8. When the wind concentrating scoop 31 rotates from the 230° rotation position of the wind wheel 2 to the 320° rotation position of the wind wheel 2, the main controller controls the corresponding servo drive motor 35 to drive the wind concentrating scoop 31 to rotate clockwise, so that the working angle of the wind concentrating scoop 31 is always maintained at 90°; at this time, the natural wind acts on the side surface of the wind concentrating scoop 31, and the outer surface of the wind concentrating scoop 31 is an arc-shaped surface, which can reduce the wind resistance area, reduce the reverse work, and make the wind wheel 2 rotate smoothly.

[0103] W9. When the wind concentrator 31 rotates from the 320° rotation position of the wind wheel 2 to the 0° reference point of the wind wheel 2, the main controller controls the corresponding servo drive motor 35 to drive the wind concentrator 31 to accelerate counterclockwise rotation, so that the working angle of the wind concentrator 31 rotates from 90° to 130°.

[0104] It can be seen that in the present invention, the main controller controls each servo drive motor 35 to drive the wind collecting bucket 31 to rotate clockwise and counterclockwise, so that the working angle of the wind collecting bucket assembly 3 in the working area is 180°, so that the windward surface of the wind collecting bucket assembly 3 is always aligned with the incoming wind, and the working angle of the wind collecting bucket assembly 3 in the reverse working area is 90°, so that the reverse work of the wind collecting bucket assembly 3 in the reverse working area is minimized; and it can also enable the instantaneous position of each wind collecting bucket assembly 3 to achieve optimal work when the wind wheel 2 rotates one circle, so that the wind wheel 2 can obtain the maximum work force, and thus the wind wheel 2 can be started in a breeze state.

[0105] In this embodiment, when the wind vane detects that the incoming wind direction has changed, the wind vane sends a detection signal to the main controller, and the main controller re-determines the incoming wind direction as the 0° reference point during the rotation of the wind wheel 2; then the main controller executes steps W2-W9 again to ensure that the windward surface of the wind focusing bucket assembly 3 is always aligned with the incoming wind when it is in the working area, and when the wind focusing bucket assembly 3 is in the reverse working area, the working angle of the wind focusing bucket assembly 3 is 90°, so that the reverse work of the wind focusing bucket assembly 3 in the reverse working area is minimized; the instantaneous position of each wind focusing bucket assembly 3 achieves the optimal work, so that the wind wheel 2 can obtain the maximum work force.

[0106] The normal working process is carried out as follows: Z1. A preset threshold value of the rated speed of the wind wheel is set in the main controller, and the preset threshold value of the rated speed of the wind wheel is 20 revolutions per minute.

[0107] Z2, encoder 62 is used to constantly detect the real-time rotation speed of the vertical main shaft 22 and send it to the main controller, which compares the real-time rotation speed with a preset threshold of the rated rotation speed of the wind wheel.

[0108] Z3. When the real-time rotation speed is less than the preset threshold of the wind wheel rated rotation speed, the main controller controls the wind wheel 2 to execute the breeze start-up process.

[0109] Z4. When the real-time rotation speed is greater than the preset threshold of the rated rotation speed of the wind wheel, the main controller sends a control signal to control each servo drive motor 35 to drive the windward surface of the wind focusing bucket 31 to rotate to 180° and lock it, so that the wind focusing bucket 31 no longer rotates on its own. At this time, the wind focusing bucket 31 revolves with the wind wheel 2.

[0110] It can be seen that in this embodiment, when the real-time rotation speed of the wind wheel 2 is less than 20 rpm, the main controller controls the wind wheel 2 to execute the breeze starting process; when the real-time rotation speed of the wind wheel 2 is greater than 20 rpm, the main controller controls each servo drive motor 35 to drive the windward surface of the wind focusing scoop 31 to rotate to 180° and then lock it, so that the wind focusing scoop 31 no longer rotates on its own, and at this time the wind focusing scoop 31 revolves with the wind wheel 2.

[0111] The braking and speed reduction process is carried out in the following steps: S1. A preset threshold value for the maximum rotation speed of the wind wheel is set in the main controller, and the preset threshold value for the maximum rotation speed of the wind wheel is 30 revolutions per minute.

[0112] S2. The encoder 62 is used to constantly detect the real-time rotation speed of the vertical main shaft 22 and send it to the main controller. The main controller compares the real-time rotation speed with a preset threshold value of the maximum rotation speed of the wind wheel.

[0113] S3. When the real-time rotation speed is less than the preset threshold value of the maximum rotation speed of the wind wheel, the main controller controls the wind wheel 2 to perform a normal working process.

[0114] S4. When the real-time rotation speed is greater than the preset threshold of the maximum rotation speed of the wind wheel, it indicates that the rotation speed of the wind wheel 2 is too high and braking protection is required. At this time, the main controller sends a control signal to control the forward rotation of the brake motor of the brake assembly 4. At this time, the brake assembly 4 brakes the vertical main shaft 22 to reduce the rotation speed of the vertical main shaft 22, thereby reducing the rotation speed of the wind wheel 2, so that the real-time rotation speed of the wind wheel 2 remains less than or equal to the preset threshold of the maximum rotation speed of the wind wheel.

[0115] It can be seen that in this embodiment, when the real-time rotation speed of the wind wheel 2 is greater than 20 rpm and less than 30 rpm, the main controller controls the wind wheel 2 to perform normal working procedures; when the real-time rotation speed of the wind wheel 2 is greater than 30 rpm, the main controller controls the brake assembly 4 to perform a braking operation, thereby applying a load to the vertical main shaft 22 to reduce the rotation speed of the vertical main shaft 22, thereby reducing the rotation speed of the wind wheel 2, so that the real-time rotation speed of the wind wheel 2 remains less than or equal to the preset threshold value of the maximum rotation speed of the wind wheel, thereby achieving full protection of the vertical axis resistance type light wind wind turbine, avoiding the risk of the generator burning out or collapsing due to excessive rotation speed of the wind wheel 2.

[0116] In this embodiment, it should be particularly pointed out that: taking one year as the statistical unit, a year is a total of 8760 hours, and the average photovoltaic power generation time in the prior art is 4.5 hours a day, that is, the photovoltaic power generation time in a year is: 4.5*365=1642.5 hours; when using horizontal axis wind turbines, the time of horizontal axis wind turbines in inland areas is about 2400-2800 hours; the time of horizontal axis wind turbines in coastal areas is about 2800-3200 hours; the time of horizontal axis wind turbines in marine areas is about 3400-4000 hours.

[0117] The above technical solution is adopted in the present invention, which can be started at a light wind speed of 1.6-3.3m / s, and can achieve full power generation at a wind speed of level 5. Therefore, the vertical axis resistance type light wind wind turbine in the present invention has a power generation time of about 6000-7000 hours a year, which can greatly increase the power generation and improve the use effect.

[0118] The overall structure of the present invention is made of space aluminum material. The thickness of the space aluminum material is 1 mm, and the weight of the 1 mm thick space aluminum material is 2.75 kg / ㎡. Therefore, the overall weight is light and can be started with a light wind.

[0119] In the present embodiment, it is particularly important to mention that existing wind turbines generate a lot of noise during operation, thus causing noise pollution. In the present invention, a wind collecting scoop 31 is used to block the natural wind to drive the wind wheel 2 to rotate as a whole, and drive the generator to generate electricity. In the present embodiment, the servo drive motor 35 drives the wind collecting scoop 31 to rotate through the reducer 36, thereby adjusting the angle of the wind collecting scoop 31 so that the instantaneous position of the wind collecting scoop 31 can achieve optimal work, thereby enabling the wind wheel 2 to obtain the maximum work force.

[0120] When the reducer 36 drives the wind collecting scoop 31 to rotate, the vibration of the reducer 36 will be transmitted to the wind collecting scoop 31, and the cross section of the wind collecting scoop 31 is an arc-shaped groove. At this time, the vibration of the wind collecting scoop 31 will generate noise, resulting in noise pollution.

[0121] In this embodiment, the inner and outer surfaces of the wind gathering scoop 31 are coated with a noise reduction coating, and the noise reduction coating is arranged in three layers from the inside to the outside, namely a primer, a middle coating and a topcoat; the primer is coated with noise reduction paint with a coating thickness of 10-20μm; the middle coating is coated with aerosolized building insulation paint with a coating thickness of 3-5mm, and the topcoat is anti-aging topcoat with a coating thickness of 30-40μm.

[0122] With such a design, the noise generated by the wind focusing scoop 31 due to resonance can be reduced through the noise reduction coating, thereby reducing the noise generated by the vertical axis resistance type light wind wind turbine during operation and reducing noise pollution.

[0123] In this embodiment, the servo drive motor 35 and the reducer 36 are respectively fixedly mounted on the wind collecting scoop mounting frame 25, and sound-absorbing and noise-reducing pads are respectively provided at the connections between the servo drive motor 35 and the reducer 36 and the wind collecting scoop mounting frame 25. The sound-absorbing and noise-reducing pads can reduce the vibration transmitted to the wind collecting scoop 31 by the servo drive motor 35 and the reducer 36 during operation, thereby reducing the generation of noise and improving the use effect.

[0124] In the present invention, the application of noise reduction coating and sound-absorbing and noise-reducing pad can reduce the noise generated by the vertical axis resistance type light wind wind turbine during operation, so that the working noise is reduced to below 60 decibels, thereby improving the use effect and reducing noise pollution.

[0125] For those skilled in the art, according to the teachings of the present invention, without departing from the principles and spirit of the present invention, changes, modifications, substitutions and variations made to the implementation methods are still within the protection scope of the present invention.

Claims

1. A vertical axis resistance type light wind wind turbine, characterized in that: The invention comprises a wind wheel (2), the wind wheel (2) comprises a wind wheel bracket (21), a plurality of wind collecting scoop assemblies (3) are arranged in a ring shape and at even intervals on the wind wheel bracket (21), the wind collecting scoop assemblies (3) are capable of self-rotation relative to the wind wheel bracket (21), and a control system is arranged on the wind wheel bracket (21), when the wind wheel (2) rotates one circle, the wind wheel (2) is divided into a 180° working area and a 180° anti-working area; the control system controls the wind collecting scoop assemblies (3) to self-rotate in real time according to the change of wind direction, and adjusts the angle of the windward surface of the wind collecting scoop assemblies (3), so that the windward surface of the wind collecting scoop assemblies (3) in the working area is always aligned with the incoming wind, and the windward surface of the wind collecting scoop assemblies (3) in the anti-working area is 90° with the incoming wind surface, so that the anti-working of the wind collecting scoop assemblies (3) in the anti-working area is minimized.

2. A vertical axis resistance type light wind wind turbine according to claim 1, characterized in that: The wind wheel (2) is rotatably mounted on the tower (1), a support seat (7) is fixedly mounted on the top of the tower (1), and a brake assembly (4) for applying a load to the wind wheel (2), a power supply assembly (5) for supplying power to a control system, and a detection assembly (6) for detecting the rotation speed of the wind wheel (2) are respectively mounted on the support seat (7).

3. A vertical axis resistance type light wind wind turbine according to claim 2, characterized in that: The wind wheel support (21) comprises a vertical main shaft (22), a mounting seat (23) is fixedly mounted on the upper end of the vertical main shaft (22), the vertical main shaft (22) is rotatably mounted on the support seat (7), a plurality of mounting brackets (24) are fixedly mounted on the mounting seat (23), a wind collecting scoop mounting frame (25) is fixedly mounted on the other end of the mounting bracket (24), and the wind collecting scoop assemblies (3) are respectively mounted on the wind collecting scoop mounting frame (25).

4. A vertical axis resistance type light wind wind turbine according to claim 3, characterized in that: The overall structure of the wind collecting scoop assembly (3) comprises a wind collecting scoop (31), the cross section of the wind collecting scoop (31) is in the shape of an arcuate groove, an open arcuate inner cavity is arranged inside the wind collecting scoop (31), a central axis (32) is vertically arranged inside the wind collecting scoop (31), and the upper and lower ends of the central axis (32) respectively extend to the outer sides of the upper and lower ends of the wind collecting scoop (31) and are rotatably mounted on the wind collecting scoop mounting frame (25).

5. A vertical axis resistance type light wind wind turbine according to claim 4, characterized in that: A wind collecting scoop drive assembly for driving the wind collecting scoop (31) to rotate so as to adjust the angle between the windward surface and the incoming wind surface of the wind collecting scoop (31) is fixedly mounted on the upper end or the lower end of the wind collecting scoop mounting frame (25); the wind collecting scoop drive assembly comprises a servo drive motor (35), a reducer (36) is transmission-connected to the power output end of the servo drive motor (35), and the power output end of the reducer (36) is transmission-connected to one end of the corresponding central shaft (32).

6. A vertical axis resistance type light wind wind turbine according to claim 5, characterized in that: An inclination angle α is provided between the windward surface of the wind focusing scoop (31) and the vertical surface, and the inclination angle α is 1-4°.

7. A vertical axis resistance type light wind wind turbine according to claim 6, characterized in that: The control system comprises a control box, which is fixedly mounted above the mounting base (23) and rotates synchronously with the wind wheel (2); a main controller and a storage battery are mounted in the control box, and an input end of the main controller is electrically connected to a wind vane; an output end of a detection component (6) is electrically connected to an input end of the main controller, and the detection component (6) is used to detect the real-time rotation speed of the vertical main shaft (22) and send it to the main controller.

8. A vertical axis resistance type light wind wind turbine according to claim 7, characterized in that: The output end of the main controller is electrically connected to the control end of the brake assembly (4); the output end of the main controller is electrically connected to the control end of the corresponding servo drive motor (35) through a plurality of servo control circuits; the main controller is provided with a preset threshold value for the rated speed of the wind wheel and a preset threshold value for the maximum speed of the wind wheel; The output end of the conductive arm (53) of the power supply component (5) is electrically connected to the power supply end of the servo drive motor (35) through a power supply circuit.

9. A control method for a vertical axis resistance type light wind turbine, based on the vertical axis resistance type light wind turbine of claim 8, characterized in that: The control method includes breeze starting process, normal working process and braking speed reduction process; The breeze start process is carried out as follows: W1. First, the wind vane detects the incoming wind direction and sends it to the main controller. The main controller determines that the incoming wind direction is the 0° reference point during the rotation of the wind wheel (2); when the wind wheel (2) rotates one circle, 0°-180° is the working area, and 180°-360° is the anti-working area; W2, when one wind concentrator assembly (3) on the wind wheel (2) is located at the 0° reference point position, along the rotation direction of the wind wheel (2), two of the remaining four wind concentrator assemblies (3) are located in the working area; and the other two wind concentrator assemblies (3) are located in the anti-working area; W3, the main controller sends a control signal to control the servo drive motor (35) on each wind collecting bucket assembly (3) to work, and the servo drive motor (35) is used to drive the central shaft (32) to drive the wind collecting bucket (31) to rotate. At this time, when each wind collecting bucket (31) rotates one circle with the wind wheel (2), the windward surface and the windward surface of the wind collecting bucket (31) have three working angles, which are 130°, 180°, and 90°; among which, the working angle of the wind collecting bucket (31) located at the 0° reference point position of the wind wheel (2) is 130°; the working angle of the wind collecting bucket (31) located in the working area is 180°; and the working angle of the wind collecting bucket (31) located in the anti-working area is 90°; W4, after the natural wind enters the wind collecting bucket (31), the force of the natural wind generates thrust on the wind wheel (2), causing the wind wheel (2) to rotate; W5, the working angle of the wind collecting bucket (31) at the 0° reference point on the wind wheel (2) is 130°. When the wind collecting bucket (31) at the 0° reference point rotates to the 50° rotation position of the wind wheel (2), the main controller controls the corresponding servo drive motor (35) to drive the wind collecting bucket (31) to decelerate and rotate, so that the working angle of the wind collecting bucket (31) rotates counterclockwise from 130° to 180°; W6. When the wind collecting bucket (31) rotates from the 50° rotation position of the wind wheel (2) to the 180° rotation position of the wind wheel (2), the main controller controls the corresponding servo drive motor (35) to drive the wind collecting bucket (31) to rotate normally counterclockwise, so that the working angle of the wind collecting bucket (31) is always maintained at 180°. At this time, the windward surface of the wind collecting bucket (31) is always parallel to the incoming wind surface, ensuring that the wind collecting bucket (31) rotating in the working area is subjected to the maximum thrust of the natural wind, so that the wind wheel (2) rotates smoothly; W7. When the wind collecting bucket (31) rotates from the 180° rotation position of the wind wheel (2) to the 230° rotation position of the wind wheel (2), the main controller controls the corresponding servo drive motor (35) to drive the wind collecting bucket (31) to rotate clockwise at a reduced speed, so that the working angle of the wind collecting bucket (31) rotates from 180° to 90°; W8. When the wind collecting scoop (31) rotates from the 230° rotation position of the wind wheel (2) to the 320° rotation position of the wind wheel (2), the main controller controls the corresponding servo drive motor (35) to drive the wind collecting scoop (31) to rotate clockwise, so that the working angle of the wind collecting scoop (31) is always maintained at 90°; the natural wind acts on the side elevation of the wind collecting scoop (31), and the outer surface of the wind collecting scoop (31) is a curved surface, which reduces the wind resistance area, so that the wind wheel (2) obtains the maximum work force; W9. When the wind collecting scoop (31) rotates from the 320° rotation position of the wind wheel (2) to the 0° reference point of the wind wheel (2), the main controller controls the corresponding servo drive motor (35) to drive the wind collecting scoop (31) to accelerate counterclockwise rotation, so that the working angle of the wind collecting scoop (31) rotates from 90° to 130°.

10. A control method for a vertical axis resistance type light wind wind turbine according to claim 9, characterized in that: The normal working process is carried out as follows: Z1. The main controller is provided with a preset threshold value of the rated speed of the wind rotor, and the preset threshold value of the rated speed of the wind rotor is 20 rpm; Z2, a detection component (6) is used to constantly detect the real-time rotation speed of the wind wheel (2) and send it to the main controller, and the main controller compares the real-time rotation speed with a preset threshold value of the rated rotation speed of the wind wheel; Z3. When the real-time rotation speed is less than a preset threshold value of the wind wheel rated rotation speed, the main controller controls the wind wheel (2) to execute a breeze start-up process; Z4. When the real-time rotation speed is greater than a preset threshold value of the rated rotation speed of the wind wheel, the main controller sends a control signal to control each servo drive motor (35) to drive the windward surface of the wind collecting bucket (31) to rotate to 180° and lock it, so that the wind collecting bucket (31) no longer rotates. At this time, the wind collecting bucket (31) revolves with the wind wheel (2); The braking and speed reduction process is carried out in the following steps: S1. The main controller is provided with a preset threshold value of the maximum speed of the wind wheel, and the preset threshold value of the maximum speed of the wind wheel is 30 revolutions per minute; S2, the detection component (6) is used to constantly detect the real-time rotation speed of the wind wheel (2) and send it to the main controller, and the main controller compares the real-time rotation speed with a preset threshold value of the maximum rotation speed of the wind wheel; S3, when the real-time rotation speed is less than a preset threshold value of the maximum rotation speed of the wind wheel, the main controller controls the wind wheel (2) to perform a normal working process; S4. When the real-time rotation speed is greater than a preset threshold value of the maximum rotation speed of the wind wheel, the main controller sends a control signal to control the operation of the brake assembly (4). At this time, the brake assembly (4) brakes the vertical main shaft (22) to reduce the rotation speeds of the vertical main shaft (22) and the wind wheel (2), so that the real-time rotation speed of the wind wheel (2) remains less than or equal to the preset threshold value of the maximum rotation speed of the wind wheel.

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