Vertical axis wind turbine based on Magnus effect

Abstract

The invention relates to the technical field of vertical axis wind turbines, in particular to a vertical axis wind turbine based on the Magnus effect, and aims to solve the technical problem that an existing lift force type vertical axis wind turbine is difficult to start in a breeze environment. To this end, the Magnus effect-based vertical axis wind turbine of the present application comprises: a vertical axis; the at least three lifting force blades and the at least three Magnus rotors are connected to the vertical shaft; the driving assembly is used for driving the Magnus rotor; and the control module is electrically connected with the driving assembly and used for controlling starting and stopping of the driving assembly according to the actual wind condition so as to drive the Magnus rotor to rotate, and after the Magnus rotor rotates, the lifting force blades continuously capture wind energy to maintain operation of the vertical axis wind turbine. In this way, the defects that a lift type vertical axis fan is small in starting torque and difficult to start are overcome, and normal starting of the lift type vertical axis fan under the breeze condition is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vertical axis wind turbine, and particularly provides a vertical axis wind turbine based on Magnus effect. BACKGROUND

[0002] The vertical axis wind turbine is a research hotspot in the field of wind energy. Compared with the horizontal axis wind turbine, the vertical axis wind turbine has low requirement on wind direction, convenient maintenance of generator set, low noise, and other characteristics, and has significant advantages such as wind directionality, simple structure, low installation and maintenance cost, and low aerodynamic noise, thus showing broad application prospects.

[0003] However, the existing vertical axis wind turbine has obvious technical limitations: the drag type has large starting torque, is easy to start, but has low tip speed ratio and limited power output; the lift type has high tip speed ratio, better wind energy utilization rate and power output, but is difficult to start in a breeze environment due to small starting torque; some models combine drag blades and lift blades to balance performance, but the drag blades have large wind resistance after starting, which reduces the rotation speed and wind energy conversion rate; the traditional driver needs high torque to cooperate with a reducer and a frequency converter, and has complex structure and high cost; the variable pitch control technology can improve the starting and efficiency, but is limited due to complex control system and easy damage, and an optimal technical solution is needed to break through the above bottlenecks. SUMMARY

[0004] In order to overcome the above defects, the present application is proposed to solve or at least partially solve the technical problem that the existing lift type vertical axis wind turbine is difficult to start in a breeze environment. The present application provides a vertical axis wind turbine based on Magnus effect.

[0005] In a first aspect, the present application provides a vertical axis wind turbine based on Magnus effect, comprising:

[0006] a vertical shaft;

[0007] at least three lift blades and at least three Magnus rotors connected to the vertical shaft;

[0008] a driving assembly for driving the Magnus rotors;

[0009] a control module electrically connected to the driving assembly, for controlling the start and stop of the driving assembly according to the actual wind condition, to drive the Magnus rotors to rotate, and for maintaining the operation of the vertical axis wind turbine by the lift blades continuously capturing wind energy after the rotation of the Magnus rotors.

[0010] In one embodiment of the vertical axis wind turbine based on Magnus effect of the present application, the lift blades and the Magnus rotors are alternately distributed along the vertical shaft in a circumferential direction, and the number of the lift blades is equal to that of the Magnus rotors.

[0011] In one embodiment of the Magnus-effect-based vertical axis wind turbine of the present application, the number of the lift blades and the number of the Magnus rotors are both three.

[0012] In one embodiment of the Magnus-effect-based vertical axis wind turbine of the present application, the lift blades and the Magnus rotors are connected with the vertical axis through a connecting assembly; the connecting assembly comprises:

[0013] a ring-shaped connecting seat sleeved outside the vertical axis;

[0014] a first connecting arm and a second connecting arm extending along the circumference of the ring-shaped connecting seat, wherein the first connecting arm is connected with the lift blades for fixing the lift blades, and the second connecting arm is connected with the Magnus rotors for fixing the Magnus rotors.

[0015] In one embodiment of the Magnus-effect-based vertical axis wind turbine of the present application, at least two groups of the connecting assemblies are arranged along the vertical axis in an axial direction, and the first connecting arms and the second connecting arms of the adjacent connecting assemblies are distributed in a staggered manner.

[0016] In one embodiment of the Magnus-effect-based vertical axis wind turbine of the present application, the ring-shaped connecting seat of the connecting assembly is detachably connected with the vertical axis, and the first connecting arm and the second connecting arm are respectively connected with the lift blades and the Magnus rotors through bolt or clamping fitting.

[0017] In one embodiment of the Magnus-effect-based vertical axis wind turbine of the present application, the height of the connecting assembly is adjustable, and the length of the first connecting arm and the second connecting arm is adjustable.

[0018] In one embodiment of the Magnus-effect-based vertical axis wind turbine of the present application, the driving assembly is a driving motor, and the output end of the driving motor is connected with the Magnus rotors through a gear transmission mechanism.

[0019] In one embodiment of the Magnus-effect-based vertical axis wind turbine of the present application, the control module comprises:

[0020] a wind speed detection unit for detecting the actual wind speed in the environment and generating a wind speed signal;

[0021] a processor for judging whether the wind speed is lower than a preset threshold according to the wind speed signal sent by the wind speed detection unit, and controlling the driving assembly to start if yes, or to stop if no.

[0022] In one embodiment of the vertical axis wind turbine based on the Magnus effect of the present application, the vertical axis wind turbine further comprises an end plate connected between the Magnus rotor and the second connecting arm.

[0023] The one or more technical solutions of the present application have at least one or more of the following advantages Advantages:

[0024] The vertical axis wind turbine based on the Magnus effect in the present application comprises a vertical shaft, at least three lift blades and at least three Magnus rotors connected to the vertical shaft, a driving assembly for driving the Magnus rotors, and a control module electrically connected to the driving assembly for controlling the start and stop of the driving assembly according to the actual wind conditions to drive the Magnus rotors to rotate, and the lift blades to continuously capture wind energy to maintain the operation of the vertical axis wind turbine after the Magnus rotors rotate. In this way, the active rotation of the Magnus rotors in a slight wind provides a starting driving force, which improves the disadvantages of small starting torque and difficult starting of the lift-type vertical axis wind turbine, and realizes the starting of the lift-type vertical axis wind turbine in a slight wind. At the same time, the Magnus rotors have a small blade area, which ensures the wind energy utilization efficiency and power generation after the wind turbine starts. Compared with using a large driver to start, only a small amount of small drivers are needed to control the rotors with small mass and simple structure, and the large driver and the matching reducer and frequency converter are omitted, so the cost is greatly reduced. In addition, through the functional division of the Magnus rotors and the lift blades, the complex real-time adjustment mechanism is reduced, and the service life of the vertical axis wind turbine is improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] The disclosure of the present application will become more apparent with reference to the drawings. It is easily understood by those skilled in the art that the drawings are only for illustrative purposes, and are not intended to limit the scope of protection of the present application. In addition, similar numbers in the figures are used to represent similar components, wherein:

[0026] Figure 1 is the main structure schematic diagram of the vertical axis wind turbine based on the Magnus effect in one embodiment of the present application;

[0027] Figure 2 is the principle schematic diagram of the Magnus effect in one embodiment of the present application;

[0028] Figure 3 is the structure schematic diagram of the Magnus rotor in one embodiment of the present application;

[0029] Figure 4 is the overall structure schematic diagram of the vertical axis wind turbine based on the Magnus effect in one embodiment of the present application. DETAILED DESCRIPTION

[0030] Some embodiments of the present application will be described in detail with reference to the drawings. Those skilled in the art will understand that the embodiments are only used to explain the technical principles of the present application, and are not intended to limit the protection scope of the present application.

[0031] The tip speed ratio of the conventional lift-type vertical axis wind turbine is high, the wind energy utilization rate and power output are more optimal, but it is difficult to start in a light wind environment due to small starting torque. Therefore, the present application proposes a vertical axis wind turbine based on Magnus effect.

[0032] Referring to the drawings Figure 1 , Figure 1 It is the main structure schematic diagram of the vertical axis wind turbine based on Magnus effect according to an embodiment of the present application.

[0033] As Figure 1 and Figure 4 shown, the vertical axis wind turbine based on Magnus effect in the embodiment of the present application mainly includes:

[0034] vertical shaft 10;

[0035] at least three lift blades 20 and at least three Magnus rotors 30 connected to the vertical shaft 10;

[0036] a driving assembly 40 for driving the Magnus rotor;

[0037] a control module electrically connected with the driving assembly, for controlling the start and stop of the driving assembly 40 according to the actual wind condition, to drive the Magnus rotor 30 to rotate, and to maintain the operation of the vertical axis wind turbine by the lift blades 20 capturing wind energy after the rotation of the Magnus rotor 30.

[0038] The vertical shaft 10 is the center support and rotation reference component of the entire wind turbine, all blades and rotors are arranged around it and rotate around it, the vertical shaft 10 provides installation basis for the lift blades 20 and the Magnus rotors 30, and transmits the rotation torque.

[0039] The lift blades 20 are the main wind energy capturing components of the vertical axis wind turbine in normal operation, which generate lift through aerodynamic shape (such as airfoil) under the action of airflow, drive the vertical shaft to rotate continuously, and bear the function of maintaining operation.

[0040] As Figure 2 and Figure 3 shown, the rotation movement of the cylindrical Magnus rotor is driven by a small motor, due to the rotation of the rotor and the action of the wind field, the pressure on one side of the rotor increases, and the pressure on the other side decreases, resulting in a pressure difference in the circumferential direction of the rotor and forming a horizontal lift, which in turn drives the wind wheel to start rotating.

[0041] The Magnus rotor 30 is a key component in the starting stage, and works based on the Magnus effect (a rotating cylinder in the airflow will generate a vertical lift force perpendicular to the airflow direction), and generates driving force through self-rotation and wind field interaction, thereby solving the problem of small starting torque of the lift blade and difficulty in starting in a light wind.

[0042] The driving assembly 40 is the power source of the Magnus rotor, and is used to drive the Magnus rotor to rotate, and is the premise of realizing the Magnus effect. The driving assembly 40 is used to drive only the Magnus rotor to rotate, and does not directly drive the lift blade or the vertical shaft.

[0043] The control module is the intelligent control center of the entire vertical axis wind turbine, and is electrically connected with the driving assembly. The core function is to control the start and stop of the driving assembly according to the actual wind condition.

[0044] Specifically, the lift blade cannot start autonomously at a low wind speed due to the small starting torque. At this time, the control module detects that the wind condition does not meet the starting condition, and triggers the driving assembly to work, driving the Magnus rotor to rotate. The rotating Magnus rotor interacts with the surrounding weak airflow, generates a horizontal lift force based on the Magnus effect, causes a pressure difference between the two sides of the rotor due to the speed difference of the airflow, and pushes the Magnus rotor to rotate around the vertical shaft. The lift force drives the entire lift blade to rotate synchronously, realizing the process of starting the wind turbine from static to starting.

[0045] When the wind turbine is started by the Magnus rotor, the lift blade has entered a rotating state. At this time, the control module detects that the wind speed meets the condition for the lift blade to work autonomously, controls the driving assembly to stop, and the Magnus rotor no longer rotates. The lift blade continuously generates lift under the action of the airflow, realizing stable conversion of wind energy into mechanical energy.

[0046] The vertical axis wind turbine based on the Magnus effect of the application comprises: a vertical shaft; at least three lift blades and at least three Magnus rotors connected to the vertical shaft; a driving assembly for driving the Magnus rotors; and a control module electrically connected with the driving assembly, for controlling the start and stop of the driving assembly according to the actual wind condition, to drive the Magnus rotors to rotate, and to maintain the operation of the vertical axis wind turbine by the lift blades continuously capturing wind energy after the Magnus rotors rotate. In this way, the active rotation of the Magnus rotor in a light wind provides starting driving force, improves the disadvantages of small starting torque and difficulty in starting of the lift type vertical axis wind turbine, realizes the starting of the lift type vertical axis wind turbine in a light wind, and the Magnus rotor has a small blade area, ensuring the wind energy utilization efficiency and power generation power after the wind turbine starts. Compared with using a large driver to start, only a small amount of small drivers are needed to control the rotor with small mass and simple structure, and large drivers and supporting reducers and frequency converters are omitted, so that the cost is greatly reduced. In addition, through the functional division of the Magnus rotor and the lift blade, complex real-time adjustment mechanisms are reduced, and the service life of the vertical axis wind turbine is improved.

[0047] In one embodiment of the vertical axis wind turbine based on the Magnus effect of the present application, the lift blades 20 and the Magnus rotors 30 are alternately distributed along the vertical axis in a circumferential direction, and the number of the lift blades is equal to the number of the Magnus rotors.

[0048] Circumferential distribution means that the lift blades 20 and the Magnus rotors 30 are arranged along the circumferential direction of the vertical axis 10 with the vertical axis 10 as the center. This arrangement ensures that both the lift blades and the Magnus rotors uniformly surround the vertical axis, forming a complete rotating power unit.

[0049] Alternately distributed means that the lift blades 20 and the Magnus rotors 30 are arranged in the circumferential direction with intervals, and both are not continuously gathered but are distributed with intervals around the vertical axis.

[0050] Equal in number means that the number of the lift blades 20 is exactly the same as the number of the Magnus rotors 30, for example, 3 lift blades correspond to 3 Magnus rotors, 4 lift blades correspond to 4 Magnus rotors, and so on.

[0051] In the existing vertical axis wind turbine, the combination of drag blades and lift blades often leads to unstable operation due to the asymmetrical layout caused by the functional differences of the blades. However, in the present application, the number of the lift blades is equal to the number of the Magnus rotors and they are alternately distributed, which not only ensures the functional division in the starting and running stages, but also solves the problem of force imbalance in the traditional combination scheme through symmetrical layout, while avoiding the defect of excessive wind resistance after the drag blades are started, realizing the dual optimization of efficient starting and stable operation of the vertical axis wind turbine.

[0052] In one embodiment of the vertical axis wind turbine based on the Magnus effect of the present application, the number of the lift blades 20 and the number of the Magnus rotors 30 are both three.

[0053] Specifically, the combination of three lift blades and three Magnus rotors forms a rotating unit with symmetrical structure and balanced force. In the starting stage, the three Magnus rotors uniformly provide driving force to ensure smooth starting of the wind turbine, and in the running stage, the three lift blades uniformly capture wind energy to maintain stable rotation. This number design and layout closely cooperate with the functional design to achieve the technical goal of easy starting at low wind speed and efficient operation at high wind speed, avoiding the problems of difficult starting or low running efficiency in the existing schemes.

[0054] In one embodiment of the vertical axis wind turbine based on the Magnus effect of the present application, as shown in Figure 1 The lift blades 20 and the Magnus rotors 30 are connected to the vertical axis 10 through a connecting assembly 50;

[0055] The connecting assembly 50 comprises a ring-shaped connecting seat 501 sleeved outside the vertical shaft 10;

[0056] A first connecting arm 502 and a second connecting arm 503 extending along the circumference of the ring-shaped connecting seat 501, wherein the first connecting arm 502 is connected with the lift blade 20 for fixing the lift blade 20, and the second connecting arm 503 is connected with the Magnus rotor 30 for fixing the Magnus rotor 30.

[0057] The connecting assembly 50 serves as a bridge between the lift blade 20, the Magnus rotor 30 and the vertical shaft 10, and bears the key functions of fixing the two core working components and transmitting force and torque, ensuring that the lift blade and the Magnus rotor can stably rotate around the vertical shaft 10 and effectively transmit the wind energy to the vertical shaft 10.

[0058] The ring-shaped connecting seat 501 can be ring-shaped and adapted to the cylindrical shape of the vertical shaft 10, and can be tightly sleeved on the vertical shaft to form a fixed or relatively rotatable connection.

[0059] The first connecting arm 502 and the second connecting arm 503 are two connecting arms extending outward from the circumferential direction of the ring-shaped connecting seat, and the first connecting arm 502 and the second connecting arm 503 should be alternately arranged in the circumferential direction.

[0060] The first connecting arm 502 is used to connect the lift blade 20 to stably install the lift blade 20 around the vertical shaft 10, ensuring that the lift generated by the lift blade 20 under the action of airflow can be effectively transmitted to the ring-shaped connecting seat 501 and the vertical shaft 10.

[0061] The second connecting arm 503 is used to connect the Magnus rotor 30 to install the rotor around the vertical shaft 10, which not only fixes the axial and radial positions of the Magnus rotor 30, but also allows the Magnus rotor 30 to rotate itself to generate the Magnus effect.

[0062] The ring-shaped connecting seat 501 is sleeved outside the vertical shaft 10, which can uniformly disperse the force transmitted by the connecting arms and avoid deformation or damage of the vertical shaft caused by excessive local stress. The first connecting arm 502 and the second connecting arm 503 extend from the circumferential direction of the ring-shaped connecting seat 501, and the alternating distribution layout can make the lift blade 20 and the Magnus rotor 30 evenly distributed in the circumference, ensuring that the center of gravity of the wind turbine coincides with the vertical shaft during rotation, reducing vibration and unbalanced load, and improving the operation stability. In addition, the connecting assembly 50 ensures that the lift blade and the Magnus rotor can be installed according to the preset spatial layout, providing a structural basis for the functional cooperation of the two, for example, in the starting stage, the Magnus rotor is stably fixed and rotated through the second connecting arm to generate driving force; in the running stage, the lift blade maintains a stable posture through the first connecting arm to efficiently capture wind energy.

[0063] Exemplarily, the ratio of the length of the first connecting arm to the length of the second connecting arm can be 3:1.

[0064] In one specific embodiment of the vertical axis wind turbine based on the Magnus effect of the present application, the connecting assemblies 50 are arranged in at least two groups along the vertical axis 10 in an axial direction, and the first connecting arms 502 and the second connecting arms 503 of the adjacent connecting assemblies 50 are distributed in a staggered manner.

[0065] Specifically, at least one group of connecting assemblies 50 is arranged at the upper part and the lower part of the vertical axis 10 respectively to jointly support the lift blades 20 and the Magnus rotors 30. The first connecting arms 502 and the second connecting arms 503 of the two groups of assemblies do not coincide in the circumferential position, i.e., there is an angular offset in the circumferential direction between a connecting arm of the upper assembly and a connecting arm at the corresponding position of the lower assembly.

[0066] The lift blades and the Magnus rotors will be impacted by the airflow during operation. When fixed by only one group of connecting assemblies, the end of the lift blade / Magnus rotor may be bent and deformed due to the excessively long cantilever, or even cause the connection part to break. Arranging at least two groups of connecting assemblies in the axial direction is equivalent to providing support at different heights of the lift blade / Magnus rotor, which can greatly reduce the cantilever length and bending stress of the components, and enhance the rigidity and anti-deformation ability of the overall structure. The staggered distribution of the connecting arms of the adjacent assemblies can make the force received by the lift blade / Magnus rotor be transmitted to the vertical axis more uniformly in the axial direction, rather than being concentrated at the same circumferential position, thereby avoiding the twisting of the vertical axis due to excessive local force and further improving the structural stability.

[0067] The lift blades will form an airflow wake behind when rotating. If the positions of the connecting arms of the two groups of connecting assemblies coincide, the lower blade may be directly in the wake of the upper blade, resulting in a decrease in wind energy capture efficiency. The staggered distribution can make the lift blades of the upper and lower layers stagger in the circumferential position, avoid the overlap of the wakes, and enable each layer of blades to fully contact the undisturbed airflow, thereby improving the overall wind energy utilization rate. For the Magnus rotors, the staggered distribution can also reduce the airflow interference between the upper and lower layers of rotors during rotation, ensuring that the Magnus lift is efficiently generated during the starting stage.

[0068] If the lift blades or the Magnus rotors are long in the axial length, a single group of connecting assemblies cannot balance the center of gravity, which is easy to cause vibration due to the offset of the center of gravity during rotation. The multiple groups of staggered connecting assemblies can better match the center of gravity distribution of the long-size components through asymmetric support at different heights, reduce vibration and noise, and prolong the service life of the equipment.

[0069] In one embodiment of the vertical axis wind turbine based on the Magnus effect of the present application, the annular connecting seat 501 of the connecting assembly 50 is detachably connected with the vertical shaft 10, and the first connecting arm 502 and the second connecting arm 503 are respectively connected with the lift blade 20 and the Magnus rotor 30 through bolt or clamping fitting.

[0070] The detachable connection means that the connection between the annular connecting seat and the vertical shaft is not fixed and inseparable, but is realized by a detachable structure such as a bolt, a buckle, a pin, etc., and can be separated by a dismounting tool when needed.

[0071] The first connecting arm and the second connecting arm are connected with the lift blade and the Magnus rotor through bolt or clamping fitting. Through the detachable connection and the specific form (bolt, clamping fitting), the connection design is optimized from the aspects of installation and maintenance, structural flexibility, safety, etc., which not only guarantees the stable operation of the wind turbine, but also improves the practicality and economy of the scheme.

[0072] In one embodiment of the vertical axis wind turbine based on the Magnus effect of the present application, the height of the connecting assembly 50 is adjustable, and the lengths of the first connecting arm 502 and the second connecting arm 503 are adjustable.

[0073] The height of the connecting assembly is adjustable, which means that the axial position of the connecting assembly along the vertical shaft can be changed, and is not fixed at a specific position of the vertical shaft. For example, the annular connecting seat is matched with the vertical shaft through a slidable structure and is fixed at the adjusted position through a locking member (such as a bolt or a buckle); or a plurality of positioning holes are arranged on the vertical shaft, and the connecting seat is matched with the positioning holes at different heights through a latch to realize height fixation. Further, the height adjustment range of the connecting assembly needs to meet the overall structural stability of the wind turbine, and is usually adjusted within a preset safety range.

[0074] The lengths of the first connecting arm and the second connecting arm are adjustable, which means that the radial lengths of the first connecting arm connecting the lift blade and the second connecting arm connecting the Magnus rotor from the annular connecting seat to the blade / rotor can be changed. For example, the connecting arm adopts a telescopic sleeve structure; or adopts a multi-section splicing structure; or the effective distance of the arm length can be changed through a hinged mechanism.

[0075] Specifically, adjusting the length of the connecting arm can change the rotational radii of the lift blade and the Magnus rotor, increase the arm length to expand the capture range at low wind speed, shorten the arm length to reduce the load at high wind speed, and balance the efficiency and safety under different wind conditions. Adjusting the height of the connecting assembly can make the blade / rotor adapt to the wind speed gradient at different heights, improve the overall wind energy utilization rate by adjusting the key components to a height with better wind speed.

[0076] It can be understood that the first connecting arm and the second connecting arm can also be numerical values obtained in advance through a large number of experiments, and the numerical values can be directly used in subsequent actual application without adjusting the height or length of the connecting arm.

[0077] In an embodiment of the vertical axis wind turbine based on the Magnus effect in the application, the vertical axis wind turbine further comprises an end plate 60 connected between the Magnus rotor and the second connecting arm.

[0078] Specifically, the end plate 60 can serve as a vortex reduction device to suppress the vortex generated when the rotor rotates, reduce energy loss, and improve the efficiency of the rotor; play a flow regulating role on the airflow, so that the airflow flows through the rotor more smoothly, enhance the Magnus effect, and thus improve the lateral force generated by the rotor; the upper end plate located on the upper side of the Magnus rotor can cover the rotor to protect it from environmental factors such as rainwater, debris, etc., and play a role in protecting the internal structure of the rotor; the lower end plate located on the lower side of the Magnus is used to axially embed the rotor shaft to support the rotor and ensure that the rotor can rotate stably.

[0079] In a specific embodiment of the vertical axis wind turbine based on the Magnus effect in the application, the driving assembly 40 is a driving motor, and the output end of the driving motor is connected with the Magnus rotor 30 through a gear transmission mechanism.

[0080] Specifically, the type of driving motor can be selected according to requirements, such as a direct current motor, an alternating current motor, a servo motor, etc., and generally needs to have the characteristics of stable output torque and fast response speed to adapt to the power demand of the Magnus rotor in the starting stage.

[0081] The gear transmission mechanism is an intermediate component connecting the output end of the driving motor and the Magnus rotor, which is composed of meshing gears. When the driving motor is working, the output shaft rotates to drive the driving gear of the gear transmission mechanism to rotate, and the power is transmitted to the driven gear through gear meshing, and finally the Magnus rotor is rotated by the driven gear, realizing the conversion from motor power to mechanical rotation.

[0082] In a specific embodiment of the vertical axis wind turbine based on the Magnus effect in the application, the control module comprises:

[0083] a wind speed detection unit for detecting the actual wind speed in the environment and generating a wind speed signal;

[0084] a processor for determining whether the wind speed is lower than a preset threshold according to the wind speed signal sent by the wind speed detection unit, and if so, controlling the driving assembly to start, otherwise, controlling the driving assembly to stop.

[0085] The preset threshold value can be a preset numerical value, which can be adaptively modified according to an actual application scenario.

[0086] Specifically, the wind speed detection unit, as an environmental perception component, captures the actual wind speed in real time through a sensor and converts it into an electrical signal, such as a wind speed signal, which can be recognized by the processor, thereby providing a data basis for the regulation of the processor. Exemplarily, a wind speed measuring instrument can be an example of the wind speed detection unit.

[0087] The processor, as a control core, compares the wind speed signal transmitted by the wind speed detection unit with a preset wind speed threshold value. Specifically, when the actual wind speed is detected to be lower than the threshold value, it is determined that the lift blade cannot be independently started, and a start instruction is then sent to the driving assembly to drive the Magnus rotor to rotate to provide starting power. When the actual wind speed is higher than the threshold value, it is determined that the lift blade can maintain operation by itself by capturing wind energy, and the driving assembly is instructed to stop working to avoid energy loss caused by the continuous operation of the Magnus rotor. In this way, the problem of difficult starting of the lift-type wind turbine in a slight wind is solved, and the balance between energy saving and efficient operation is achieved by starting and stopping the driving assembly as needed, thereby ensuring the stable operation of the vertical axis wind turbine.

[0088] In one specific embodiment of the vertical axis wind turbine based on the Magnus effect of the present application, the lift blade 20 adopts a wing-shaped structure.

[0089] Specifically, the lift blade 20 adopts a wing-shaped structure, that is, the cross-sectional design of the blade follows the principle of aerodynamic wing shape, such as a common symmetrical wing shape or an asymmetrical wing shape, and there is a difference in curvature between the upper and lower surfaces. When the airflow flows through this structure, the airflow speed on the upper surface of the blade is fast and the pressure is low, and the airflow speed on the lower surface of the blade is slow and the pressure is high, thereby generating a lift force perpendicular to the airflow direction. It is this lift force that enables the lift blade to drive the vertical shaft to rotate under the action of wind, thereby realizing the conversion of wind energy into mechanical energy and improving the ability of the lift blade to efficiently capture wind energy, which is conducive to maintaining the stable operation of the vertical axis wind turbine.

[0090] In addition, as shown in Figure 1 The vertical axis wind turbine can further include a direct-drive generator 70.

[0091] So far, the technical solution of the present application has been described in combination with the specific embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the present application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to related technical features without departing from the principles of the present application, and the technical solutions after these changes or replacements will fall within the protection scope of the present application.

Claims

1. A vertical axis wind turbine based on the Magnus effect, characterized in that, The vertical axis wind turbine includes: Vertical axis; At least three lifting blades and at least three Magnus rotors are connected to the vertical axis; Drive components for driving the Magnus rotor; The control module, which is electrically connected to the drive assembly, is used to control the start and stop of the drive assembly according to the actual wind conditions, so as to drive the Magnus rotor to rotate, and after the Magnus rotor rotates, the lift blades continuously capture wind energy to maintain the operation of the vertical axis wind turbine.

2. The vertical axis wind turbine based on the Magnus effect according to claim 1, characterized in that, The lifting blades and the Magnus rotor are alternately distributed along the vertical axis circumferentially, and the number of lifting blades and the number of Magnus rotors are equal.

3. The vertical axis wind turbine based on the Magnus effect according to claim 2, characterized in that, The number of lifting blades and the number of Magnus rotors are both three.

4. The vertical axis wind turbine based on the Magnus effect according to claim 1, characterized in that, The lifting blades and the Magnus rotor are connected to the vertical axis via a connecting assembly; the connecting assembly includes: An annular connecting seat fitted onto the outside of the vertical axis; A first connecting arm and a second connecting arm extend circumferentially along the annular connecting seat, wherein the first connecting arm is connected to the lifting blade for fixing the lifting blade; and the second connecting arm is connected to the Magnus rotor for fixing the Magnus rotor.

5. The vertical axis wind turbine based on the Magnus effect according to claim 4, characterized in that, At least two sets of the connecting components are provided along the vertical axis, and the first connecting arm and the second connecting arm of adjacent connecting components are staggered.

6. The vertical axis wind turbine based on the Magnus effect according to claim 4, characterized in that, The annular connecting seat of the connecting assembly is detachably connected to the vertical axis, and the first connecting arm and the second connecting arm are respectively connected to the lifting blade and the Magnus rotor by bolts or snap-fit.

7. The vertical axis wind turbine based on the Magnus effect according to claim 4, characterized in that, The height of the connecting component is adjustable, and the lengths of the first and second connecting arms are adjustable.

8. The vertical axis wind turbine based on the Magnus effect according to claim 1, characterized in that, The drive component is a drive motor, and the output end of the drive motor is connected to the Magnus rotor through a gear transmission mechanism.

9. The vertical axis wind turbine based on the Magnus effect according to claim 1, characterized in that, The control module includes: The wind speed detection unit is used to detect the actual wind speed in the environment and generate a wind speed signal. The processor is used to determine whether the wind speed is lower than a preset threshold based on the wind speed signal sent by the wind speed detection unit. If so, it controls the drive component to start; otherwise, it controls the drive component to stop.

10. The vertical axis wind turbine based on the Magnus effect according to claim 4, characterized in that, The vertical axis wind turbine also includes an end plate connected between the Magnus rotor and the second connecting arm.

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