Wing section control method and device for wind turbine generator with lift force type vertical shaft

Abstract

The invention discloses a wing section control method and device with a lifting force type vertical axis wind turbine generator, and the method comprises the steps that a function expression constructed for the wing section chord length of the lifting force type vertical axis wind turbine generator is obtained, aerodynamic design parameters at least comprise the incoming flow wind speed facing a transverse horizontal wing section and the wing section attack angle of the transverse horizontal wing section, and the function expression is constructed for the wing section chord length of the lifting force type vertical axis wind turbine generator; the vertical axis blade height, the vertical axis wind wheel diameter and the vertical axis unit efficiency; the current incoming flow wind speed is calculated through the function expression, and the chord length value of the first wing section is obtained; the first wing section chord length value is used for conducting performance testing on the lift type vertical axis wind turbine generator, a performance testing result is obtained, and under the condition that it is determined that the testing result is used for indicating that the unit performance of the lift type vertical axis wind turbine generator passes testing, the transverse horizontal wing section is replaced with a target transverse horizontal wing section with the first wing section chord length value, and controlling the target transverse horizontal wing section to rotate according to the current incoming flow wind speed.

Description

Technical Field

[0001] The present application relates to the field of wing section control of a lift-type vertical axis wind turbine generator set, and in particular, to a wing section control method and device for a lift-type vertical axis wind turbine generator set. Background Art

[0002] With the global energy crisis and increasingly severe environmental pollution problems, wind energy, due to its clean, renewable, and widespread advantages, has become one of the most promising renewable energy sources for large-scale development. Wind power generation technology converts wind energy into electrical energy. The principle of this technology is to use wind turbines to convert wind energy into electricity, which is then transmitted through the power grid to where it is needed. In recent years, vertical-axis wind turbines have gained increasing attention in the wind energy industry due to their advantages, such as their small footprint.

[0003] The blades in vertical-axis wind turbines are mostly rotatable. This means the blades have a wing section at the top and bottom of the rotor, each of which can rotate about the vertical axis to adjust the blade's angle of attack, thereby regulating the wind turbine's power generation. Currently, wind turbine designers control wing section rotation solely based on the blade's angle of attack, without optimizing the wing section chord length. This results in poor wing section control capabilities, impacting wind turbine power generation. This demonstrates the technical issue in related technologies, which stems from insufficient wing section control capabilities and leads to low wind turbine power generation efficiency.

[0004] Currently, no effective solution has been proposed to the technical problem of low power generation efficiency of wind turbines due to insufficient wing section control capabilities in related technologies.

[0005] Therefore, it is necessary to improve the related technology to overcome the above-mentioned defects in the related technology. Summary of the Invention

[0006] The embodiments of the present application provide a wing section control method and device for a lift-type vertical axis wind turbine, so as to at least solve the technical problem of low power generation efficiency of the wind turbine due to insufficient wing section control capability.

[0007] According to one aspect of an embodiment of the present application, a wing segment control method for a lift-type vertical-axis wind turbine is provided, comprising: obtaining a function expression constructed for the wing segment chord length of the lift-type vertical-axis wind turbine, wherein the function expression is used to characterize the functional relationship between the wing segment chord length of the lift-type vertical-axis wind turbine and the aerodynamic design parameters of the lift-type vertical-axis wind turbine, wherein the aerodynamic design parameters at least include the incoming wind speed facing the lateral horizontal wing segment, the wing segment angle of attack of the lateral horizontal wing segment, the vertical axis blade height, the vertical axis wind rotor diameter, and the vertical axis unit efficiency; using the function expression to calculate the current incoming wind speed to obtain a first wing segment chord length value; using the first wing segment chord length value to perform a performance test on the lift-type vertical-axis wind turbine to obtain a performance test result; when it is determined that the performance test result is used to indicate that the unit performance of the lift-type vertical-axis wind turbine has passed the test, replacing the lateral horizontal wing segment with a target lateral horizontal wing segment having the first wing segment chord length value, and controlling the rotation of the target lateral horizontal wing segment according to the current incoming wind speed.

[0008] In an exemplary embodiment, obtaining a function expression constructed for the chord length of the wing section of the lift-type vertical-axis wind turbine group includes: obtaining wind tunnel test data of the lift-type vertical-axis wind turbine group, and obtaining parameter values ​​of multiple groups of parameters of the aerodynamic design parameters from the wind tunnel test data; performing a fitting operation on the parameter values ​​of the multiple groups of parameters to obtain the function expression.

[0009] In an exemplary embodiment, the function expression is expressed as follows: f(C)=f(a, 0.5*ρ*V 3 *L*D*Cp); C represents the chord length of the wing section, a represents the angle of attack of the wing section, ρ represents the air density, V represents the incoming wind speed, L represents the vertical axis blade height, D represents the vertical axis wind rotor diameter, and Cp represents the vertical axis unit efficiency.

[0010] In an exemplary embodiment, obtaining wind tunnel test data of the lift-type vertical axis wind turbine includes: performing an aerodynamic performance test on the blades of the lift-type vertical axis wind turbine in a simulated environment based on a simulation parameter group generated by simulated wind speed, simulated angle of attack, and simulated chord length, obtaining a first correspondence between the blade lift coefficient and the simulation parameter group, and obtaining a second correspondence between the blade drag coefficient and the simulation parameter group; and determining the wind tunnel test data based on the first correspondence and the second correspondence.

[0011] In an exemplary embodiment, the method further includes: displaying the first correspondence and the second correspondence in a polar coordinate reference system; or, determining a lift curve corresponding to the wind tunnel test data, and displaying the lift curve in a visual manner.

[0012] According to another aspect of an embodiment of the present application, a lift-type vertical axis wind turbine is provided, comprising: an H-shaped vertical axis wind rotor, wherein the H-shaped vertical axis wind rotor has a rotatable transverse horizontal wing segment; a control system, wherein the control system is used to obtain a function expression constructed for the wing segment chord length of the lift-type vertical axis wind turbine, wherein the function expression is used to characterize the functional relationship between the wing segment chord length of the lift-type vertical axis wind turbine and the aerodynamic design parameters of the lift-type vertical axis wind turbine, wherein the aerodynamic design parameters include at least the incoming wind speed facing the transverse horizontal wing segment, the transverse horizontal wing segment chord length, and the transverse horizontal wing segment chord length. The invention relates to a method for controlling the rotation of a lift-type vertical axis wind turbine generator set. The method comprises the following steps: calculating the wing segment attack angle of the horizontal wing segment, the vertical axis blade height, the vertical axis wind rotor diameter, and the vertical axis unit efficiency; using the function expression to calculate the current incoming wind speed to obtain the first wing segment chord length value; using the first wing segment chord length value to perform a performance test on the lift-type vertical axis wind turbine generator set to obtain a performance test result. When it is determined that the performance test result is used to indicate that the unit performance of the lift-type vertical axis wind turbine generator set has passed the test, replacing the lateral horizontal wing segment with a target lateral horizontal wing segment having the first wing segment chord length value, and controlling the rotation of the target lateral horizontal wing segment according to the current incoming wind speed.

[0013] According to another aspect of an embodiment of the present application, a wing section control device with a lift-type vertical axis wind turbine is further provided, comprising: an acquisition module for acquiring a function expression constructed for the wing section chord length of the lift-type vertical axis wind turbine, wherein the function expression is used to characterize the functional relationship between the wing section chord length of the lift-type vertical axis wind turbine and the aerodynamic design parameters of the lift-type vertical axis wind turbine, wherein the aerodynamic design parameters include at least the incoming wind speed facing the transverse horizontal wing section, the wing section attack angle of the transverse horizontal wing section, the vertical axis blade height, the vertical axis wind rotor diameter, and the vertical axis wind turbine rotor diameter. diameter, vertical axis unit efficiency; an obtaining module, used to calculate the current incoming wind speed using the function expression to obtain the chord length value of the first wing segment; a control module, used to perform a performance test on the lift-type vertical axis wind turbine using the first wing segment chord length value to obtain a performance test result, and when it is determined that the performance test result is used to indicate that the unit performance of the lift-type vertical axis wind turbine has passed the test, replace the lateral horizontal wing segment with a target lateral horizontal wing segment having the first wing segment chord length value, and control the rotation of the target lateral horizontal wing segment according to the current incoming wind speed.

[0014] According to another aspect of an embodiment of the present application, a computer-readable storage medium is further provided, in which a computer program is stored, wherein the computer program is configured to execute the above-mentioned wing section control method of a lift-type vertical axis wind turbine when running.

[0015] According to another aspect of an embodiment of the present application, an electronic device is also provided, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the wing section control method of the lift-type vertical-axis wind turbine through the computer program.

[0016] According to another aspect of the present application, a computer program product is provided, including a computer program, which implements the steps in any one of the above method embodiments when executed by a processor.

[0017] Through the present application, a function expression constructed for the wing segment chord length of the lift-type vertical axis wind turbine is obtained, wherein the function expression is used to characterize the functional relationship between the wing segment chord length of the lift-type vertical axis wind turbine and the aerodynamic design parameters of the lift-type vertical axis wind turbine, wherein the aerodynamic design parameters at least include the incoming wind speed facing the lateral horizontal wing segment, the wing segment angle of attack of the lateral horizontal wing segment, the vertical axis blade height, the vertical axis wind rotor diameter, and the vertical axis unit efficiency; the current incoming wind speed is calculated using the function expression to obtain a first wing segment chord length value; the lift-type vertical axis wind turbine is performance tested using the first wing segment chord length value to obtain a performance test result; when it is determined that the performance test result is used to indicate that the unit performance of the lift-type vertical axis wind turbine has passed the test, the lateral horizontal wing segment is replaced with a target lateral horizontal wing segment having the first wing segment chord length value, and the rotation of the target lateral horizontal wing segment is controlled according to the current incoming wind speed. The present application can dynamically adjust the wing segment chord length according to the current wind speed and the aerodynamic design parameters of the wind turbine to adapt to different wind speed conditions, improve the wind energy capture efficiency, and thus optimize the performance of the wind turbine. Specifically, by constructing a function expression between the wing segment chord length and the aerodynamic design parameters, the optimal wing segment chord length value can be calculated under different wind speed conditions, and then the wing segment can be replaced and its rotation controlled to achieve the optimal wind energy capture efficiency. This method not only solves the technical problem of low power generation efficiency of wind turbines due to insufficient wing segment control ability, improves the adaptability and efficiency of wind turbines, but also can reduce the mechanical stress of wind turbines under different wind speed conditions, extend their service life, and has significant economic and environmental benefits.

[0018] Furthermore, this dynamic wing chord adjustment method can be combined with wind speed prediction technology to proactively adjust the wing sections to account for upcoming wind speed changes, further improving the stability and efficiency of wind energy capture. In practical applications, this method can significantly increase wind farm power generation and reduce operation and maintenance costs, playing a significant role in enhancing the competitiveness and sustainable development of the wind power industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1 This is a hardware structure block diagram of a computer terminal for a wing section control method of a lift-type vertical axis wind turbine generator system according to an embodiment of the present application;

[0022] Figure 2 This is a flow chart of a wing section control method for a lift-type vertical axis wind turbine according to an embodiment of the present application;

[0023] Figure 3 is a schematic diagram of a transverse horizontal wing section according to an embodiment of the present application;

[0024] Figure 4 is a schematic diagram of wing section control of a lateral horizontal wing section according to an embodiment of the present application;

[0025] Figure 5 This is a structural block diagram of a wing section control device for a lift-type vertical axis wind turbine according to an embodiment of the present application. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0027] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in a sequence other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0028] The method embodiments provided in the embodiments of the present application can be executed in a computer terminal or similar computing device for controlling the wing sections of a lift-type vertical axis wind turbine. Taking running on a computer terminal as an example, Figure 1 This is a hardware structure block diagram of a computer terminal for a wing section control method of a lift-type vertical axis wind turbine generator system according to an embodiment of the present application. Figure 1 As shown, the computer terminal may include one or more ( Figure 1 Only one is shown) a processor 102 (the processor 102 may include but is not limited to a microprocessor or a processing device such as a field programmable gate array (FPGA)) and a memory 104 for storing data. The computer terminal may also include a transmission device 106 and an input / output device 108 for communication functions. It will be understood by those skilled in the art that Figure 1 The structure shown is only for illustration and does not limit the structure of the above-mentioned computer terminal. For example, the computer terminal may also include Figure 1 More or fewer components than shown, or with Figure 1 Different configurations shown.

[0029] The memory 104 can be used to store computer programs, for example, software programs and modules of application software, such as the computer program corresponding to the wing section control method of the lift-type vertical axis wind turbine in the embodiment of the present application. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, that is, implementing the above method. The memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include a memory remotely located relative to the processor 102, and these remote memories may be connected to the computer terminal via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0030] The transmission device 106 is used to receive or transmit data via a network. A specific example of the aforementioned network may include a wireless network provided by a computer terminal's communications provider. In one embodiment, the transmission device 106 includes a network interface controller (NIC), which can be connected to other network devices via a base station to enable communication with the Internet. In another embodiment, the transmission device 106 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0031] In this embodiment, a wing section control method for a lift-type vertical axis wind turbine is provided. Figure 2 FIG. 1 is a flow chart of a wing section control method for a lift-type vertical axis wind turbine according to an embodiment of the present application. Figure 2 As shown, the process includes the following steps:

[0032] Step S202: Obtaining a function expression constructed for the wing section chord length of the lift-type vertical axis wind turbine, wherein the function expression is used to characterize the functional relationship between the wing section chord length of the lift-type vertical axis wind turbine and the aerodynamic design parameters of the lift-type vertical axis wind turbine, wherein the aerodynamic design parameters at least include the incoming wind speed facing the transverse horizontal wing section, the wing section angle of attack of the transverse horizontal wing section, the vertical axis blade height, the vertical axis wind rotor diameter, and the vertical axis unit efficiency;

[0033] Step S204: Calculate the current incoming wind speed using the function expression to obtain the chord length value of the first wing segment;

[0034] Step S206: Use the first wing segment chord length value to perform a performance test on the lift-type vertical-axis wind turbine to obtain a performance test result. When it is determined that the performance test result is used to indicate that the performance of the lift-type vertical-axis wind turbine has passed the test, the lateral horizontal wing segment is replaced with a target lateral horizontal wing segment having the first wing segment chord length value, and the rotation of the target lateral horizontal wing segment is controlled according to the current incoming wind speed.

[0035] Through the above steps, a function expression constructed for the wing section chord length of the lift-type vertical axis wind turbine is obtained, wherein the function expression is used to characterize the functional relationship between the wing section chord length of the lift-type vertical axis wind turbine and the aerodynamic design parameters of the lift-type vertical axis wind turbine, wherein the aerodynamic design parameters at least include the incoming wind speed facing the lateral horizontal wing section, the wing section angle of attack of the lateral horizontal wing section, the vertical axis blade height, the vertical axis wind rotor diameter, and the vertical axis unit efficiency; the current incoming wind speed is calculated using the function expression to obtain a first wing section chord length value; the lift-type vertical axis wind turbine is performance tested using the first wing section chord length value to obtain a performance test result; when it is determined that the performance test result is used to indicate that the unit performance of the lift-type vertical axis wind turbine has passed the test, the lateral horizontal wing section is replaced with a target lateral horizontal wing section having the first wing section chord length value, and the rotation of the target lateral horizontal wing section is controlled according to the current incoming wind speed. The present application can dynamically adjust the wing segment chord length according to the current wind speed and the aerodynamic design parameters of the wind turbine to adapt to different wind speed conditions, improve the wind energy capture efficiency, and thus optimize the performance of the wind turbine. Specifically, by constructing a function expression between the wing segment chord length and the aerodynamic design parameters, the optimal wing segment chord length value can be calculated under different wind speed conditions, and then the wing segment can be replaced and its rotation controlled to achieve the optimal wind energy capture efficiency. This method not only solves the technical problem of low power generation efficiency of wind turbines due to insufficient wing segment control ability, improves the adaptability and efficiency of wind turbines, but also can reduce the mechanical stress of wind turbines under different wind speed conditions, extend their service life, and has significant economic and environmental benefits.

[0036] In an exemplary embodiment, the process of obtaining a function expression constructed for the chord length of the wing section of the lift-type vertical-axis wind turbine includes: obtaining wind tunnel test data of the lift-type vertical-axis wind turbine, and obtaining parameter values ​​of multiple groups of parameters of the aerodynamic design parameters from the wind tunnel test data; performing a fitting operation on the parameter values ​​of the multiple groups of parameters to obtain the function expression.

[0037] In an exemplary embodiment, the function expression is expressed as follows: f(C)=f(a, 0.5*ρ*V 3*L*D*Cp); C represents the chord length of the wing section, a represents the angle of attack of the wing section, ρ represents the air density, V represents the incoming wind speed, L represents the vertical axis blade height, D represents the vertical axis wind rotor diameter, and Cp represents the vertical axis unit efficiency.

[0038] It should be noted that Vertical Axis Wind Turbine Efficiency (VAWTE) refers to the efficiency of a Vertical Axis Wind Turbine (VAWT) in converting wind energy into electrical energy. The calculation of VAWTE efficiency involves multiple factors, including:

[0039] 1. Wind energy capture efficiency, which measures the ability of a wind turbine to capture wind energy, that is, the ratio of the wind energy actually captured by the wind turbine to the wind energy passing through its swept area.

[0040] 2. Conversion efficiency, which measures how efficiently a wind turbine converts captured wind energy into mechanical energy.

[0041] 3. Power generation efficiency, which measures the efficiency of wind turbines in converting mechanical energy into electrical energy.

[0042] 4. System efficiency: the efficiency of the mechanical system, electrical system and control system of the wind turbine.

[0043] In an exemplary embodiment, the process of obtaining wind tunnel test data for the lift-type vertical axis wind turbine includes: in a simulated environment, performing an aerodynamic performance test on the blades of the lift-type vertical axis wind turbine based on a simulated parameter group generated by simulated wind speed, simulated angle of attack, and simulated chord length, obtaining a first correspondence between the blade lift coefficient and the simulated parameter group, and obtaining a second correspondence between the blade drag coefficient and the simulated parameter group; and determining the wind tunnel test data based on the first correspondence and the second correspondence. By fitting a large amount of data obtained from wind tunnel testing in a simulated environment, the relationship between the chord length of the wing section and the aerodynamic design parameters can be more accurately reflected, and a more comprehensive understanding of the aerodynamic performance of the wing section under different conditions can be obtained, providing richer data support for wing section control, thereby improving the accuracy of wing section control.

[0044] In an exemplary embodiment, the first and second correspondences may be displayed in a polar coordinate reference system; or a lift curve corresponding to the wind tunnel test data may be determined and visually displayed. The polar coordinate reference system or the visual display of the lift curve allows for intuitive analysis of the aerodynamic performance of the wing section at different angles of attack and wind speeds, facilitating performance optimization and fault diagnosis by technicians.

[0045] In an exemplary embodiment, a lift-type vertical axis wind turbine is provided, comprising: an H-shaped vertical axis wind rotor, wherein the H-shaped vertical axis wind rotor has a rotatable transverse horizontal wing segment; a control system, wherein the control system is used to obtain a function expression constructed for the wing segment chord length of the lift-type vertical axis wind turbine, wherein the function expression is used to characterize the functional relationship between the wing segment chord length of the lift-type vertical axis wind turbine and the aerodynamic design parameters of the lift-type vertical axis wind turbine, wherein the aerodynamic design parameters include at least the incoming wind speed facing the transverse horizontal wing segment, the transverse horizontal wing segment chord length, and the transverse horizontal wing segment chord length. The wing section angle of attack of the horizontal wing section, the vertical axis blade height, the vertical axis wind rotor diameter, and the vertical axis unit efficiency; using the function expression to calculate the current incoming wind speed to obtain the first wing section chord length value; using the first wing section chord length value to perform a performance test on the lift-type vertical axis wind turbine unit to obtain a performance test result. When it is determined that the performance test result is used to indicate that the unit performance of the lift-type vertical axis wind turbine unit has passed the test, the lateral horizontal wing section is replaced with a target lateral horizontal wing section having the first wing section chord length value, and the rotation of the target lateral horizontal wing section is controlled according to the current incoming wind speed.

[0046] It should be noted that lift-type vertical-axis wind turbines are characterized by vertically positioned blades, using the lift of airflow to drive the rotor. This design gives vertical-axis wind turbines high efficiency and stability, making them suitable for use in urban areas and areas with low wind speeds.

[0047] A lift-type vertical-axis wind turbine typically consists of a vertical shaft and multiple vertically arranged blades. When wind blows through, the airflow is acted upon by the blades, generating lift, which propels the vertical shaft to rotate, thereby driving the generator to generate electricity. Compared to traditional horizontal-axis wind turbines, vertical-axis wind turbines have a smaller footprint, lower noise levels, and higher wind speed adaptability, making them better suited to complex urban environments and fluctuating wind speeds. Therefore, lift-type vertical-axis wind turbines are an innovative wind power generation device with high efficiency, stability, and adaptability, and are a key development direction in the future of wind power generation.

[0048] It's important to note that the structural relationship between the pitch motor, blades, and lateral horizontal wing sections is crucial in lift-type vertical-axis wind turbines. It determines how the turbine adjusts the blade's angle of attack based on wind speed conditions, thereby controlling lift and drag for optimal starting and power generation performance. The blades are the core component of the wind turbine's interaction with the wind. The lateral horizontal wing sections are rotatable components on the blades that can modify the blade's aerodynamic performance by adjusting their relative angle to the wind direction (i.e., angle of attack). At low wind speeds, the wing sections rotate to a near-vertical position to increase drag and aid turbine startup. At high wind speeds, the wing sections rotate to a near-horizontal position to increase lift and improve power generation efficiency. The pitch motor is a precision drive device used to adjust the angle of attack of the lateral horizontal wing sections on the blades. Installed at the blade root or at the connection between the wing section and the main blade body, the rotation of the motor drives the wing section's rotation. Controlling the pitch motor ensures quick and accurate adjustment of the wing section position under varying wind speed conditions.

[0049] Optionally, for the lift-type vertical-axis wind turbine described in this application, the main body of the blade is connected to the tower or shaft, while the horizontal wing segments are connected to the main body of the blade via a rotating shaft. A variable pitch motor is mounted on one side of the rotating shaft, with its output shaft directly connected to the rotating shaft of the wing segment. The position of the wing segment is changed by the rotation of the motor. This structure allows the wing segment to rotate smoothly between vertical and horizontal positions to adapt to changing wind speed conditions.

[0050] Optionally, the process of adjusting the lift and drag of a lift-type vertical-axis wind turbine at different wind speeds can be implemented using the following steps: 1. Wind speed sensor deployment: Deploy wind speed sensors at key locations on the wind turbine to monitor wind speed in real time. 2. Wind speed signal processing: Establish a wind speed signal processing system, including signal reception, data processing, and wind speed level determination modules, to determine current wind speed conditions. 3. Wind speed level classification: Based on the wind turbine's design and safety standards, classify the wind speed range into three levels: low, medium, and high.

[0051] Obviously, the embodiments described above are only part of the embodiments of the present application, rather than all the embodiments. In order to better understand the above method, the above process is described below in conjunction with the embodiments, but it is not intended to limit the technical solutions of the embodiments of the present application. Specifically:

[0052] In an optional embodiment, the horizontal wing section is as follows Figure 3 As shown, the horizontal wing section adopts a hollow structure design to reduce weight and improve strength. This hollow structure can be achieved through honeycomb internal support, and the material of the hollow structure is carbon fiber composite material. The wing section frame is composed of multiple parallel rods to enhance structural stability. The parallel rods are made of aluminum alloy and connected by welding. The pitch mechanism also includes Figure 3The blue cylindrical portion D shown connects the wing section to the shaft. Made of high-strength steel, it has a diameter, for example, between 10 cm and 20 cm. It can be bolted to the wing section and shaft.

[0053] Optionally, the lateral horizontal wing section can be rotated as follows Figure 4 As shown, at low wind speeds, the rotatable horizontal wing sections are rotated vertically to reduce the starting wind speed. At high wind speeds, the horizontal wing sections are rotated almost horizontally to increase the power generation.

[0054] During low-wind-speed startup control, the control algorithm is triggered when the wind speed sensor detects low wind speeds. The pitch motor adjusts the angle of attack of the horizontal blade sections to a vertical position to increase drag and help the turbine start faster. Once the predetermined startup conditions are met, the system transitions to normal power generation control mode.

[0055] For high-wind-speed power generation control, the control algorithm is triggered when the wind speed sensor detects high wind speeds. The pitch motor adjusts the angle of attack of the horizontal blade section to a horizontal position to increase lift and improve power generation efficiency. Simultaneously, the unit's output power and speed are monitored to ensure they do not exceed the safe operating range.

[0056] Through the description of the above implementation methods, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus the necessary general hardware platform, and of course it can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for enabling a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods of each embodiment of the present application.

[0057] This embodiment also provides a wing section control device for a lift-type vertical axis wind turbine. This device is used to implement the above-mentioned embodiments and preferred embodiments. Details already described will not be repeated here. As used below, the term "module" may refer to a combination of software and / or hardware that implements a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementation using hardware, or a combination of software and hardware, is also possible and contemplated.

[0058] Figure 5 This is a structural block diagram of a wing section control device for a lift-type vertical axis wind turbine according to an embodiment of the present application, the device comprising:

[0059] an acquisition module 52 configured to acquire a function expression constructed for the wing section chord length of the lift-type vertical-axis wind turbine, wherein the function expression is configured to characterize a functional relationship between the wing section chord length of the lift-type vertical-axis wind turbine and aerodynamic design parameters of the lift-type vertical-axis wind turbine, wherein the aerodynamic design parameters include at least an incoming wind speed facing the transverse horizontal wing section, a wing section angle of attack of the transverse horizontal wing section, a vertical-axis blade height, a vertical-axis rotor diameter, and a vertical-axis turbine efficiency;

[0060] An obtaining module 54 is configured to calculate the current incoming wind speed using the function expression to obtain a chord length value of the first wing segment;

[0061] A control module 56 is configured to perform a performance test on the lift-type vertical-axis wind turbine using the first wing segment chord length value to obtain a performance test result. When it is determined that the performance test result indicates that the performance of the lift-type vertical-axis wind turbine has passed the test, the lateral horizontal wing segment is replaced with a target lateral horizontal wing segment having the first wing segment chord length value, and the rotation of the target lateral horizontal wing segment is controlled according to the current incoming wind speed.

[0062] Through the above-mentioned device and the present application, a function expression constructed for the wing segment chord length of the lift-type vertical axis wind turbine is obtained, wherein the function expression is used to characterize the functional relationship between the wing segment chord length of the lift-type vertical axis wind turbine and the aerodynamic design parameters of the lift-type vertical axis wind turbine, wherein the aerodynamic design parameters at least include the incoming wind speed facing the lateral horizontal wing segment, the wing segment attack angle of the lateral horizontal wing segment, the vertical axis blade height, the vertical axis wind rotor diameter, and the vertical axis unit efficiency; the current incoming wind speed is calculated using the function expression to obtain a first wing segment chord length value; the lift-type vertical axis wind turbine is performance tested using the first wing segment chord length value to obtain a performance test result; when it is determined that the performance test result is used to indicate that the unit performance of the lift-type vertical axis wind turbine has passed the test, the lateral horizontal wing segment is replaced with a target lateral horizontal wing segment having the first wing segment chord length value, and the rotation of the target lateral horizontal wing segment is controlled according to the current incoming wind speed. The present application can dynamically adjust the wing segment chord length according to the current wind speed and the aerodynamic design parameters of the wind turbine to adapt to different wind speed conditions, improve the wind energy capture efficiency, and thus optimize the performance of the wind turbine. Specifically, by constructing a function expression between the wing segment chord length and the aerodynamic design parameters, the optimal wing segment chord length value can be calculated under different wind speed conditions, and then the wing segment can be replaced and its rotation controlled to achieve the optimal wind energy capture efficiency. This method not only solves the technical problem of low power generation efficiency of wind turbines due to insufficient wing segment control ability, improves the adaptability and efficiency of wind turbines, but also can reduce the mechanical stress of wind turbines under different wind speed conditions, extend their service life, and has significant economic and environmental benefits.

[0063] In an exemplary embodiment, the acquisition module is also used to: obtain wind tunnel test data of the lift-type vertical axis wind turbine group, and obtain parameter values ​​of multiple groups of parameters of the aerodynamic design parameters from the wind tunnel test data; perform fitting operations on the parameter values ​​of the multiple groups of parameters to obtain the function expression.

[0064] In an exemplary embodiment, the function expression is expressed as follows: f(C)=f(a, 0.5*ρ*V 3 *L*D*Cp); C represents the chord length of the wing section, a represents the angle of attack of the wing section, ρ represents the air density, V represents the incoming wind speed, L represents the vertical axis blade height, D represents the vertical axis wind rotor diameter, and Cp represents the vertical axis unit efficiency.

[0065] In an exemplary embodiment, the acquisition module is also used to: perform aerodynamic performance testing on the blades of the lift-type vertical axis wind turbine in a simulation environment based on a simulation parameter group generated by simulated wind speed, simulated angle of attack and simulated chord length, obtain a first correspondence between the blade lift coefficient and the simulation parameter group, and obtain a second correspondence between the blade drag coefficient and the simulation parameter group; and determine the wind tunnel test data based on the first correspondence and the second correspondence.

[0066] In an exemplary embodiment, the acquisition module is further configured to: display the first corresponding relationship and the second corresponding relationship in a polar coordinate reference system; or, determine a lift curve corresponding to the wind tunnel test data, and display the lift curve in a visual manner.

[0067] An embodiment of the present application further provides a computer-readable storage medium, in which a computer program is stored. The computer program is configured to execute the steps of any of the above method embodiments when run.

[0068] Optionally, in this embodiment, the storage medium may be configured to store a computer program for performing the following steps:

[0069] S1, obtaining a function expression constructed for the wing section chord length of the lift-type vertical-axis wind turbine, wherein the function expression is used to characterize the functional relationship between the wing section chord length of the lift-type vertical-axis wind turbine and the aerodynamic design parameters of the lift-type vertical-axis wind turbine, wherein the aerodynamic design parameters at least include the incoming wind speed facing the transverse horizontal wing section, the wing section angle of attack of the transverse horizontal wing section, the vertical-axis blade height, the vertical-axis wind rotor diameter, and the vertical-axis unit efficiency;

[0070] S2, calculating the current incoming wind speed using the function expression to obtain the chord length value of the first wing segment;

[0071] S3. Use the first wing segment chord length value to perform a performance test on the lift-type vertical axis wind turbine to obtain a performance test result. When it is determined that the performance test result is used to indicate that the performance of the lift-type vertical axis wind turbine has passed the test, replace the lateral horizontal wing segment with a target lateral horizontal wing segment having the first wing segment chord length value, and control the rotation of the target lateral horizontal wing segment according to the current incoming wind speed.

[0072] In an exemplary embodiment, the computer-readable storage medium may include, but is not limited to, various media that can store computer programs, such as a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk, or an optical disk.

[0073] For specific examples in this embodiment, reference may be made to the examples described in the above embodiments and exemplary implementation modes, and this embodiment will not be described in detail here.

[0074] An embodiment of the present application further provides an electronic device, comprising a memory and a processor, wherein the memory stores a computer program, and the processor is configured to run the computer program to execute the steps in any one of the above method embodiments.

[0075] Optionally, in this embodiment, the processor may be configured to execute the following steps through a computer program:

[0076] S1, obtaining a function expression constructed for the wing section chord length of the lift-type vertical-axis wind turbine, wherein the function expression is used to characterize the functional relationship between the wing section chord length of the lift-type vertical-axis wind turbine and the aerodynamic design parameters of the lift-type vertical-axis wind turbine, wherein the aerodynamic design parameters at least include the incoming wind speed facing the transverse horizontal wing section, the wing section angle of attack of the transverse horizontal wing section, the vertical-axis blade height, the vertical-axis wind rotor diameter, and the vertical-axis unit efficiency;

[0077] S2, calculating the current incoming wind speed using the function expression to obtain the chord length value of the first wing segment;

[0078] S3. Use the first wing segment chord length value to perform a performance test on the lift-type vertical axis wind turbine to obtain a performance test result. When it is determined that the performance test result is used to indicate that the performance of the lift-type vertical axis wind turbine has passed the test, replace the lateral horizontal wing segment with a target lateral horizontal wing segment having the first wing segment chord length value, and control the rotation of the target lateral horizontal wing segment according to the current incoming wind speed.

[0079] In an exemplary embodiment, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor, and the input / output device is connected to the processor.

[0080] An embodiment of the present application further provides a computer program product, which includes a computer program. When the computer program is executed by a processor, the steps in any one of the above method embodiments are implemented.

[0081] An embodiment of the present application further provides another computer program product, comprising a non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of any of the above method embodiments are implemented.

[0082] An embodiment of the present application also provides a computer program, which includes computer instructions, which are stored in a computer-readable storage medium; a processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device performs the steps of any of the above method embodiments.

[0083] For specific examples in this embodiment, reference may be made to the examples described in the above embodiments and exemplary implementation modes, and this embodiment will not be described in detail here.

[0084] Obviously, those skilled in the art should understand that the modules or steps of the present application described above can be implemented using a general-purpose computing device, they can be concentrated on a single computing device, or distributed across a network composed of multiple computing devices, they can be implemented using program code executable by the computing device, and thus, they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be performed in a different order than herein, or they can be fabricated into separate integrated circuit modules, or multiple modules or steps can be fabricated into a single integrated circuit module for implementation. Thus, the present application is not limited to any specific combination of hardware and software.

[0085] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A wing section control method for a lift-type vertical axis wind turbine, characterized in that: The vertical axis wind rotor of the lift-type vertical axis wind turbine has a rotatable transverse horizontal wing section, including: Obtaining a function expression constructed for the wing section chord length of the lift-type vertical axis wind turbine, wherein the function expression is used to characterize the function relationship between the wing section chord length of the lift-type vertical axis wind turbine and the aerodynamic design parameters of the lift-type vertical axis wind turbine, wherein the aerodynamic design parameters at least include the incoming wind speed facing the transverse horizontal wing section, the wing section attack angle of the transverse horizontal wing section, the vertical axis blade height, the vertical axis wind rotor diameter, and the vertical axis unit efficiency; The current incoming wind speed is calculated using the functional expression to obtain the chord length value of the first wing section; A performance test is performed on the lift-type vertical-axis wind turbine using the first wing segment chord length value to obtain a performance test result. When it is determined that the performance test result is used to indicate that the performance of the lift-type vertical-axis wind turbine has passed the test, the lateral horizontal wing segment is replaced with a target lateral horizontal wing segment having the first wing segment chord length value, and the rotation of the target lateral horizontal wing segment is controlled according to the current incoming wind speed.

2. The method according to claim 1, characterized in that Obtaining a function expression constructed for the chord length of the wing section of the lift-type vertical axis wind turbine generator system, including: Obtaining wind tunnel test data of the lift-type vertical axis wind turbine group, and obtaining parameter values ​​of multiple groups of parameters of the aerodynamic design parameters from the wind tunnel test data; A fitting operation is performed on the parameter values ​​of the multiple groups of parameters to obtain the function expression.

3. The method according to claim 1 or 2, characterized in that: The function expression is expressed as follows: f(C)=f(a、0.5*ρ*V 3 *L*D*Cp); C represents the chord length of the wing section, a represents the angle of attack of the wing section, ρ represents the air density, V represents the incoming wind speed, L represents the vertical axis blade height, D represents the vertical axis wind wheel diameter, and Cp represents the vertical axis unit efficiency.

4. The method according to claim 2, characterized in that: Obtaining wind tunnel test data of the lift-type vertical axis wind turbine generator system, including: In a simulation environment, a blade of the lift-type vertical axis wind turbine is tested for aerodynamic performance based on a simulation parameter group generated by a simulated wind speed, a simulated angle of attack, and a simulated chord length, to obtain a first corresponding relationship between a blade lift coefficient and the simulation parameter group, and to obtain a second corresponding relationship between a blade drag coefficient and the simulation parameter group; The wind tunnel test data is determined based on the first corresponding relationship and the second corresponding relationship.

5. The method according to claim 4, characterized in that The method further comprises: Displaying the first corresponding relationship and the second corresponding relationship in a polar coordinate reference system; Alternatively, a lift curve corresponding to the wind tunnel test data is determined, and the lift curve is displayed in a visual manner.

6. A vertical axis wind turbine with lift, characterized in that: include: A vertical axis wind wheel of an H-shaped structure, wherein the vertical axis wind wheel of the H-shaped structure has a rotatable transverse horizontal wing section; A control system, wherein the control system is used to obtain a function expression constructed for the wing section chord length of the lift-type vertical axis wind turbine, wherein the function expression is used to characterize the functional relationship between the wing section chord length of the lift-type vertical axis wind turbine and the aerodynamic design parameters of the lift-type vertical axis wind turbine, wherein the aerodynamic design parameters at least include the incoming wind speed facing the lateral horizontal wing section, the wing section attack angle of the lateral horizontal wing section, the vertical axis blade height, the vertical axis wind rotor diameter, and the vertical axis unit efficiency; The current incoming wind speed is calculated using the functional expression to obtain the chord length value of the first wing section; A performance test is performed on the lift-type vertical-axis wind turbine using the first wing segment chord length value to obtain a performance test result. When it is determined that the performance test result is used to indicate that the performance of the lift-type vertical-axis wind turbine has passed the test, the lateral horizontal wing segment is replaced with a target lateral horizontal wing segment having the first wing segment chord length value, and the rotation of the target lateral horizontal wing segment is controlled according to the current incoming wind speed.

7. A wing section control device for a lift-type vertical axis wind turbine, characterized in that: include: An acquisition module, used for acquiring a function expression constructed for the wing segment chord length of the lift-type vertical axis wind turbine, wherein the function expression is used to characterize the function relationship between the wing segment chord length of the lift-type vertical axis wind turbine and the aerodynamic design parameters of the lift-type vertical axis wind turbine, wherein the aerodynamic design parameters at least include the incoming wind speed facing the transverse horizontal wing segment, the wing segment attack angle of the transverse horizontal wing segment, the vertical axis blade height, the vertical axis wind rotor diameter, and the vertical axis unit efficiency; An obtaining module is used to calculate the current incoming wind speed using the function expression to obtain the chord length value of the first wing segment; A control module is used to perform a performance test on the lift-type vertical-axis wind turbine using the first wing segment chord length value to obtain a performance test result. When it is determined that the performance test result indicates that the performance of the lift-type vertical-axis wind turbine has passed the test, the lateral horizontal wing segment is replaced with a target lateral horizontal wing segment having the first wing segment chord length value, and the rotation of the target lateral horizontal wing segment is controlled according to the current incoming wind speed.

8. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored program, wherein the program executes the method according to any one of claims 1 to 5 when executed.

9. An electronic device comprising a memory and a processor, characterized in that: A computer program is stored in the memory, and the processor is configured to execute the method according to any one of claims 1 to 5 through the computer program.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 5 are implemented.

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