Power generation method and device based on wind generating set and wind generating set

Abstract

The invention discloses a power generation method and device based on a wind generating set and the wind generating set, the wind generating set is at least provided with a water-drop-shaped wind wheel blade, the wind wheel blade is fixed to a vertical shaft of the wind generating set through a blade hub, and the blade hub is connected with a power generator through a driving device. The method comprises the following steps: determining a test blade contour coefficient set for a wind wheel blade, and generating a three-dimensional model of a wind wheel according to the test blade contour coefficient; a simulation test result of the three-dimensional model is determined, and the simulation test result is used for indicating unit performance when the wind generating set uses the test blade contour coefficient to simulate power generation; and under the condition that it is determined that the unit performance meets the performance requirement, the test blade contour coefficient is set as the current blade contour coefficient of the wind turbine blade, and the wind turbine generator set is controlled to use the wind turbine blade for power generation.

Description

Technical Field

[0001] The present application relates to the field of power generation of wind turbines, and in particular, to a power generation method and device based on a wind turbine, and a wind turbine. Background Art

[0002] Wind power generation is a form of renewable energy generation. In recent years, the use of wind power generation as a means of replacing fossil energy has become popular. Wind power generation technology is achieved using wind turbines. The power generation performance of wind turbines is mainly related to the design of wind rotor blades, so it is necessary to design the wind rotor blades scientifically and effectively. At present, the performance evaluation method of wind rotor blades can be evaluated by model test method, specifically using a test bench to test the wind rotor blades and then obtain the blade performance. However, due to the limitations of physical test conditions, this method cannot obtain high-precision blade performance. Numerical simulation method can also be used. This method defines the geometric parameters of the wind rotor blades through software, thereby realizing the calculation and analysis of the performance of the wind rotor blades. However, there is a large error between the simulation results and the experimental results, which affects the subsequent power generation capacity of the wind turbine.

[0003] Therefore, in the related art, there exists a technical problem that the power generation efficiency of the wind turbine generator set is low.

[0004] With regard to the technical problem of low power generation efficiency of wind turbines in related technologies, no effective solution has been proposed so far.

[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 method and device for power generation based on a wind turbine generator set, and a wind turbine generator set, so as to at least solve the technical problem of low power generation efficiency of the wind turbine generator set.

[0007] According to one aspect of an embodiment of the present application, a method for power generation based on a wind turbine generator set is provided, comprising: determining a test blade profile coefficient set for the wind rotor blades, and generating a three-dimensional model of the wind rotor according to the test blade profile coefficient; determining a simulation test result of the three-dimensional model, wherein the simulation test result is used to indicate the unit performance of the wind turbine generator set when the wind turbine generator set uses the test blade profile coefficient for simulated power generation; when it is determined that the unit performance meets the performance requirements, setting the test blade profile coefficient as the current blade profile coefficient of the wind rotor blades, and controlling the wind turbine generator set to use the wind rotor blades for power generation.

[0008] In an exemplary embodiment, determining a test blade profile coefficient set for the wind rotor blade includes: determining an expected wind rotor aerodynamic power from blade design requirements provided by a target object; determining a wind rotor swept area corresponding to the expected wind rotor aerodynamic power, and determining a rotation diameter of the wind rotor blade and a blade height of the wind rotor blade corresponding to the wind rotor swept area; upon determining that a ratio of a wind rotor radius to the blade height is greater than a preset ratio, performing a wind rotor aerodynamic simulation to obtain a simulation result; upon determining that the aerodynamic performance of the wind rotor indicated by the simulation result is optimal, determining a fitting polynomial corresponding to the geometric shape of the wind rotor blade based on the ratio; displaying the geometric shape of the wind rotor blade in a visual manner, and setting a test blade profile coefficient for the wind rotor blade according to the profile parameters of the geometric shape.

[0009] In an exemplary embodiment, determining the wind rotor swept area corresponding to the desired wind rotor aerodynamic power includes: using a power calculation formula of the desired wind rotor aerodynamic power to calculate a wind rotor rotation radius corresponding to the wind speed at the wind rotor blades, and calculating the wind rotor swept area based on the wind rotor rotation radius, wherein the power calculation formula is P=1 / 2(ρV 3 πR 2 ), where P represents power, ρ represents air density, V represents blade wind speed, and R represents the rotor rotation radius.

[0010] In an exemplary embodiment, when it is determined that the ratio of the wind wheel radius to the blade height is greater than a preset ratio, a wind wheel aerodynamic simulation is performed, and before obtaining the simulation result, the method further includes: subtracting the cavity radius from half of the rotation diameter to obtain the wind wheel radius, and determining the ratio of the wind wheel radius to the blade height, wherein the cavity radius represents the bottom radius of a cavity structure, and the cavity structure is located between the wind wheel blade and the blade hub.

[0011] In an exemplary embodiment, the method further includes: performing polynomial fitting on the geometric shape to determine the contour parameters of the geometric shape, including: determining the current geometric shape of the wind wheel according to the ratio, and determining a first mathematical polynomial used to describe the current geometric shape; setting a first coefficient required for calculating the first mathematical polynomial, and using the first mathematical polynomial and wind speed parameters to calculate the wind wheel load to obtain load performance; after calculating the wind wheel load multiple times, determining the optimal load performance, and determining the first mathematical polynomial used in calculating the optimal load performance as a second mathematical polynomial; determining the geometric shape described by the second mathematical polynomial as the target geometric shape, and determining the contour parameters of the target geometric shape.

[0012] In an exemplary embodiment, the method further includes: adding a resistance-type wind tube in the wind rotor of the wind turbine generator set to improve the low wind speed starting performance of the wind turbine generator set when using the test blade profile coefficient to simulate the unit performance during power generation.

[0013] According to another aspect of an embodiment of the present application, a wind turbine generator set is further provided, wherein the wind turbine generator set is equipped with at least a wind rotor blade with a teardrop-shaped profile, wherein the wind rotor blade is fixed to a vertical axis of the wind turbine generator set via a blade hub, and the blade hub is connected to a generator via a driving device; wherein the outer contour of the wind rotor blade with a teardrop-shaped profile supports description by a mathematical polynomial method; the vertical axis is used to support the wind rotor blade, and rotates under the rotation of the wind rotor blade to achieve energy conversion.

[0014] According to another aspect of an embodiment of the present application, a power generation device based on a wind turbine generator set is also provided, including: a generation module, used to determine a test blade profile coefficient set for a wind rotor blade, and generate a three-dimensional model of the wind rotor according to the test blade profile coefficient; a determination module, used to determine a simulation test result of the three-dimensional model, wherein the simulation test result is used to indicate the unit performance of the wind turbine generator set when the test blade profile coefficient is used for simulating power generation; a power generation module, used to set the test blade profile coefficient as the current blade profile coefficient of the wind rotor blade when it is determined that the unit performance meets the performance requirements, and control the wind turbine generator set to use the wind rotor blade to generate electricity.

[0015] According to another aspect of the embodiments of the present application, a computer-readable storage medium is provided, in which a computer program is stored, wherein the computer program is configured to execute the above-mentioned power generation method based on a wind turbine generator set when running.

[0016] According to another aspect of an embodiment of the present application, an electronic device is also provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the wind turbine-based power generation method through the computer program.

[0017] According to another aspect of the present application, a computer program product is provided, including a computer program, and when the computer program is executed by a processor, the steps in any one of the above method embodiments are implemented.

[0018] Through this application, the test blade profile coefficient set for the wind rotor blade is determined, and a three-dimensional model of the wind rotor is generated according to the test blade profile coefficient; the simulation test result of the three-dimensional model is determined, wherein the simulation test result is used to indicate the unit performance of the wind turbine when the test blade profile coefficient is used to simulate power generation; when it is determined that the unit performance meets the performance requirements, the test blade profile coefficient is set as the current blade profile coefficient of the wind rotor blade, and the wind turbine is controlled to use the wind rotor blade to generate electricity. This application solves the technical problem of low power generation efficiency of the wind turbine by optimizing the profile coefficient of the wind rotor blade with a teardrop-shaped profile, and significantly improves the power generation efficiency of the wind turbine. In addition, the design of the vertical axis makes the wind turbine more adaptable to wind direction, does not require a complex wind system, reduces maintenance costs, and enhances the stability and reliability of the system. 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 drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0021] Figure 1 It is a hardware structure block diagram of a computer terminal of a power generation method based on a wind turbine generator set according to an embodiment of the present application;

[0022] Figure 2 is a flow chart of a power generation method based on a wind turbine generator set according to an embodiment of the present application;

[0023] Figure 3 is a schematic flow chart of a power generation method based on a wind turbine generator set according to an embodiment of the present application;

[0024] Figure 4 It is a structural block diagram of a power generation device based on a wind turbine generator set according to an embodiment of the present application. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0026] 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 sequence. 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 an order 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.

[0027] The method embodiments provided in the embodiments of the present application can be executed in a computer terminal or a similar computing device of a wind turbine generator set. Taking running on a computer terminal as an example, Figure 1 1 is a hardware structure block diagram of a computer terminal for a power generation method based on a wind turbine generator set 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 in the figure) a processor 102 (the processor 102 may include but is not limited to a microprocessor or a processing device such as a programmable logic device (Field Programmable Gate Array, FPGA)) and a memory 104 for storing data, wherein the above-mentioned computer terminal may also include a transmission device 106 and an input and output device 108 for communication functions. It can 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. Figure 1 More or fewer components as shown, or with Figure 1 Different configurations are shown.

[0028] 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 power generation method based on the wind turbine generator set 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, to implement 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 examples, the memory 104 may further include a memory remotely arranged 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.

[0029] The transmission device 106 is used to receive or send data via a network. The specific example of the above network may include a wireless network provided by a communication provider of a computer terminal. In one example, the transmission device 106 includes a network adapter (Network Interface Controller, referred to as NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission device 106 can be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0030] In this embodiment, a method for generating electricity based on a wind turbine generator set is provided. Figure 2 is a flow chart of a power generation method based on a wind turbine generator set according to an embodiment of the present application, such as Figure 2 As shown, the process includes the following steps:

[0031] Step S202: determining a test blade profile coefficient set for the wind rotor blade, and generating a three-dimensional model of the wind rotor according to the test blade profile coefficient;

[0032] Step S204: determining a simulation test result of the three-dimensional model, wherein the simulation test result is used to indicate the performance of the wind turbine generator set when the wind turbine generator set uses the test blade profile coefficient to simulate power generation;

[0033] Step S206: When it is determined that the performance of the unit meets the performance requirements, the test blade profile coefficient is set as the current blade profile coefficient of the wind rotor blade, and the wind turbine generator set is controlled to use the wind rotor blade to generate electricity.

[0034] Through the above steps, the test blade profile coefficient set for the wind rotor blade is determined, and a three-dimensional model of the wind rotor is generated according to the test blade profile coefficient; the simulation test result of the three-dimensional model is determined, wherein the simulation test result is used to indicate the unit performance of the wind turbine when the test blade profile coefficient is used to simulate power generation; when it is determined that the unit performance meets the performance requirements, the test blade profile coefficient is set as the current blade profile coefficient of the wind rotor blade, and the wind turbine is controlled to use the wind rotor blade to generate electricity. The present application solves the technical problem of low power generation efficiency of the wind turbine by optimizing the profile coefficient of the wind rotor blade with a teardrop-shaped profile, and significantly improves the power generation efficiency of the wind turbine. In addition, the design of the vertical axis makes the wind turbine more adaptable to wind direction, does not require a complex wind system, reduces maintenance costs, and enhances the stability and reliability of the system.

[0035] Optionally, in one embodiment, the power generation process of the wind turbine generator set specifically includes:

[0036] 1. Wind capture: Wind acts on the blades of teardrop-shaped vertical axis wind turbines. Due to the teardrop-shaped design of the blades, the front end is wider and the rear end is narrower, which can capture wind from all directions. This design can reduce resistance and improve the efficiency of wind capture.

[0037] 2. Blade rotation: The wind pushes the blades to rotate, and the blades rotate around the vertical axis. The teardrop-shaped design makes the blades more stable during rotation, reducing vibration and noise caused by changes in wind speed.

[0038] 3. Mechanical energy conversion: The rotational mechanical energy of the blades is transmitted through a transmission device connected between the blade hub and the generator. The transmission device can be a gearbox, belt drive system or direct drive system, and its function is to convert the rotational motion of the blades into a speed suitable for the generator.

[0039] 4. Electricity generation: The transmission device transfers mechanical energy to the generator, which converts mechanical energy into electrical energy using the principle of electromagnetic induction. Specifically, when the rotor of the generator (a magnet with a coil) rotates, the change in the magnetic field in the coil causes electromagnetic induction, thereby generating current.

[0040] 5. Power regulation and output: The generated AC power may need to be regulated by power electronic devices (such as inverters) to convert the electrical energy into a voltage and frequency suitable for the grid or specific load. Subsequently, the electricity is fed into the grid for users to use, or stored in energy storage devices such as batteries for later use.

[0041] 6. Control and monitoring: Wind turbines are equipped with control systems to monitor wind speed, wind direction, generator operating status, etc. The control system can adjust the angle of the blades (in some designs) to cope with different wind speeds, ensuring that the generator operates under safe and efficient conditions. In addition, the monitoring system can collect data in real time to help maintain and optimize the performance of the wind turbine.

[0042] The entire power generation process is a continuous, automatic conversion process that starts with natural wind power and ultimately produces electricity that can be used for household, commercial or industrial purposes. The teardrop-shaped wind turbine is designed to improve efficiency, stability and environmental adaptability, especially for cities and low wind speed areas.

[0043] Based on the power generation process in the above embodiment, this application can not only be applied to the traditional wind power generation field, but also provide technical support for emerging breeze power generation, urban wind power generation, etc., and contribute to the realization of global sustainable energy goals. In practical applications, wind turbines designed in this way can be installed on the roofs of buildings, urban parks, along highways, etc., making full use of breeze resources to provide clean energy for cities, while also providing more reliable and economical power solutions for remote areas.

[0044] In an exemplary embodiment, the process of determining the test blade profile coefficient set for the wind rotor blade includes: determining the expected wind rotor aerodynamic power from the blade design requirements provided by the target object; determining the wind rotor swept area corresponding to the expected wind rotor aerodynamic power, and determining the rotation diameter of the wind rotor blade and the blade height of the wind rotor blade corresponding to the wind rotor swept area; when it is determined that the ratio of the wind rotor radius to the blade height is greater than a preset ratio, performing a wind rotor aerodynamic simulation to obtain a simulation result; when it is determined that the wind rotor aerodynamic performance indicated by the simulation result is optimal, determining the fitting polynomial corresponding to the geometric shape of the wind rotor blade based on the ratio; displaying the geometric shape of the wind rotor blade in a visual manner, and setting the test blade profile coefficient for the wind rotor blade according to the profile parameters of the geometric shape. Through precise calculation and polynomial fitting, this step can improve the aerodynamic performance of the designed blade profile and improve the power generation efficiency.

[0045] In an exemplary embodiment, the process of determining the wind rotor swept area corresponding to the desired wind rotor aerodynamic power includes: using the power calculation formula of the desired wind rotor aerodynamic power to calculate the wind rotor rotation radius corresponding to the wind speed at the wind rotor blades, and calculating the wind rotor swept area based on the wind rotor rotation radius, wherein the power calculation formula is P=1 / 2(ρV 3 πR 2 ), where P represents power, ρ represents air density, V represents blade wind speed, and R represents the rotor rotation radius.

[0046] Where P is in Watt (W). ρ is in kilograms per cubic meter (kg / m 3 ). This value depends on factors such as altitude, temperature and humidity. V is in meters per second (m / s). This is the wind speed at the rotor blades. π, is a mathematical constant approximately equal to 3.14159. R is in meters (m). This is the distance from the center of the rotor to the tip of the blade.

[0047] In an exemplary embodiment, when it is determined that the ratio of the wind wheel radius to the blade height is greater than a preset ratio, a wind wheel aerodynamic simulation is performed. Before obtaining the simulation result, the wind wheel radius can be obtained by subtracting the cavity radius from half of the rotation diameter, and the ratio of the wind wheel radius to the blade height is determined, wherein the cavity radius represents the bottom radius of a cavity structure, and the cavity structure is located between the wind wheel blade and the blade hub.

[0048] In an exemplary embodiment, the process of fitting the geometric shape with a polynomial to determine the contour parameters of the geometric shape includes: determining the current geometric shape of the wind wheel according to the ratio, and determining a first mathematical polynomial for describing the current geometric shape; setting a first coefficient required for calculating the first mathematical polynomial, using the first mathematical polynomial and wind speed parameters to calculate the wind wheel load and obtain load performance; after calculating the wind wheel load for multiple times, determining the optimal load performance, and determining the first mathematical polynomial used in calculating the optimal load performance as a second mathematical polynomial; determining the geometric shape described by the second mathematical polynomial as the target geometric shape, and determining the contour parameters of the target geometric shape. Combined with the description method of the mathematical polynomial, the geometric shape of the blade is accurately described, so that the aerodynamic performance of the blade is more excellent, and the load performance of the blade under various wind speeds is improved, which is suitable for occasions where the blade load needs to be accurately controlled to extend the service life of the blade.

[0049] In an exemplary embodiment, when the test blade profile coefficient is used to simulate the performance of the unit during power generation, a resistance-type wind tube can be added to the wind rotor of the wind turbine generator set to improve the low wind speed starting performance of the wind turbine generator set. By adding a resistance-type wind tube to the wind rotor, the starting performance of the wind turbine generator set is further enhanced under low wind speed conditions, and the low wind speed resources are effectively utilized, so that the entire wind turbine generator set can maintain a high power generation efficiency under various environmental conditions, thereby improving the economy and environmental protection of wind power generation. The starting performance of the wind turbine generator set under low wind speed conditions is improved, which is suitable for areas with low wind speeds such as inland plains and urban suburbs, thereby improving the economy and environmental protection of wind power generation.

[0050] The resistance type wind tube structure can be arranged inside or around the wind rotor blades to improve the starting performance under low wind speed conditions. The inlet and outlet shapes of the wind tube and the length of the wind tube are key factors affecting its performance.

[0051] The wind tube can concentrate and guide the wind force, making it act more effectively on the blades. The wind tube can guide the wind force to the blades, increase the wind speed of the blades, and thus improve the starting performance and power generation efficiency of the wind rotor in low wind speed environments. The design of adding a wind tube (or a guide cover) to a teardrop-shaped vertical axis wind turbine combines aerodynamic principles with mechanical engineering, and is an important advancement in vertical axis wind turbine technology.

[0052] Obviously, the embodiments described above are only some embodiments of the present application, not all 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:

[0053] In an optional embodiment, the present application Figure 3 The steps shown illustrate the technical solution of the embodiment of the present application:

[0054] Step 1: Determine the wind wheel aerodynamic power according to the design requirements.

[0055] Step 2: Estimate the rotor swept area based on efficiency.

[0056] Step 3: Determine the ratio of the teardrop-shaped rotation diameter to height.

[0057] Step 4: Determine the rotor radius and height.

[0058] Step 5: Check whether the height / diameter ratio meets the requirements. If yes, proceed to step 6, otherwise proceed to step 3.

[0059] Step 6: Carry out wind rotor aerodynamic simulation.

[0060] Step 7: Is the aerodynamic performance optimal? If yes, proceed to step 8, otherwise proceed to step 3.

[0061] Step 8: Determine the rotor height / diameter ratio.

[0062] Step 9: Determine the wind rotor geometry.

[0063] Step 10: Fit the wind rotor shape polynomial.

[0064] Step 11: Determine the function coefficients.

[0065] Step 12: Calculate the rotor load according to application requirements (ground wind speed zone high speed wind zone).

[0066] Step 13: Evaluate whether the performance is sufficient to determine the optimal shape. If yes, proceed to step 14, otherwise proceed to step 11.

[0067] Step 14: Determine the optimal shape.

[0068] Optionally, the power generation process of the wind turbine generator set is simulated by the following steps:

[0069] 1. Environmental parameter setting: First, you need to set the environmental parameters in the simulation, including wind speed, wind direction, air density, etc. These parameters will directly affect the performance of the wind turbine.

[0070] 2. Blade and wind rotor design: According to the teardrop-shaped design principle, the blade profile needs to be set in the simulation, including airfoil, length, width, tilt angle, etc. At the same time, the height, diameter, number of blades and other parameters of the wind rotor are set to build a three-dimensional model of the wind rotor.

[0071] 3. Aerodynamic analysis: Use fluid mechanics software to perform aerodynamic analysis. This step will simulate how wind forces act on the blades, calculate the pressure distribution, lift and drag on the blades, and the starting wind speed and rated wind speed of the wind rotor.

[0072] 4. Mechanical motion simulation: Use mechanical dynamics software such as ADAMS or SolidWorks MotionD to simulate the mechanical motion of the wind rotor, including blade rotation, speed change, transmission system efficiency, etc. This step can predict the speed and torque output of the wind rotor at different wind speeds.

[0073] 5. Power conversion simulation: Set the parameters of the generator, such as rated power, speed range, efficiency, etc., and use power system simulation software such as PSCAD, MATLAB / Simulink to simulate the conversion process of mechanical energy to electrical energy. This step will calculate the output voltage and current of the generator, as well as the power generation efficiency.

[0074] 6. Control system simulation: Consider the control system of the wind turbine and simulate how to adjust the blade angle according to the wind speed change (if the design includes a variable pitch system) to optimize power generation efficiency and ensure safe operation.

[0075] 7. Performance evaluation: Based on the simulation results of the above steps, the overall performance of the wind turbine is evaluated, including startup performance, power generation efficiency, stability and safety. At the same time, the impact of different design parameters on performance is analyzed to optimize the design.

[0076] 8. Result visualization and analysis: Visualize the simulation results in the form of charts, curves, etc. for easy analysis and understanding. This includes the relationship between wind speed and rotation speed, the relationship between wind speed and power generation, and performance comparison under different design parameters.

[0077] Through the above steps, a detailed simulation model of the wind turbine power generation process can be established to provide strong support for design, optimization and performance prediction. The simulation process is not only an important tool for theoretical research, but also an indispensable part of the actual product development stage, which can significantly shorten the development cycle, reduce costs, and improve the accuracy and reliability of the design.

[0078] 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 a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an 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 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.

[0079] In this embodiment, a wind turbine generator set is also provided, which is equipped with at least a wind rotor blade with a teardrop-shaped profile, and the wind rotor blade is fixed to the vertical axis of the wind turbine generator set through a blade hub, and the blade hub is connected to the generator through a driving device; wherein the outer contour of the wind rotor blade with a teardrop-shaped profile can be described by a mathematical polynomial method; the vertical axis is used to support the wind rotor blade, and rotates under the rotation of the wind rotor blade to achieve energy conversion.

[0080] For example, a wind turbine generator set may include components such as rotor blades, a hub, a rotor shaft, a drive device, and a generator. The rotor blades are mounted on the hub, and the rotor blades rotate under the action of wind, driving the hub to rotate and the connected drive device and generator to rotate, thereby realizing the conversion of electrical energy.

[0081] Exemplarily, a teardrop-shaped vertical axis wind turbine is taken as an example of the above-mentioned wind turbine generator set for description.

[0082] The teardrop-shaped vertical axis wind turbine adopts a vertical axis design, with teardrop-shaped blades to reduce resistance. The blades are evenly distributed around the vertical axis in the layout, and can adapt to wind from multiple directions and generate electricity efficiently in low-speed wind environments. At the same time, the teardrop-shaped design makes the wind turbine more stable and safe, and can effectively reduce noise and vibration.

[0083] When the wind acts on the blades, the blades rotate and drive the generator to generate electricity. This type of wind turbine is suitable for various environments such as cities, suburbs and rural areas, and can be flexibly deployed in different places such as buildings and public facilities, providing a new option for the development of renewable energy in cities.

[0084] In this embodiment, a power generation device based on a wind turbine generator set is also provided, which is used to implement the above-mentioned embodiments and preferred implementation modes, and the descriptions that have been made will not be repeated. As used below, the term "module" can implement a combination of software and / or hardware for a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

[0085] Figure 4 : is a structural block diagram of a power generation device based on a wind turbine generator set according to an embodiment of the present application, the device comprising:

[0086] A generating module 42, configured to determine a test blade profile coefficient set for a wind rotor blade, and generate a three-dimensional model of the wind rotor according to the test blade profile coefficient;

[0087] A determination module 44 is used to determine a simulation test result of the three-dimensional model, wherein the simulation test result is used to indicate the performance of the wind turbine generator set when the wind turbine generator set uses the test blade profile coefficient to simulate power generation;

[0088] The power generation module 46 is used to set the test blade profile coefficient as the current blade profile coefficient of the wind rotor blade when it is determined that the performance of the unit meets the performance requirements, and control the wind turbine generator set to use the wind rotor blade to generate electricity.

[0089] Through the above-mentioned device, the test blade profile coefficient set for the wind rotor blade is determined, and a three-dimensional model of the wind rotor is generated according to the test blade profile coefficient; the simulation test result of the three-dimensional model is determined, wherein the simulation test result is used to indicate the unit performance of the wind turbine when the test blade profile coefficient is used to simulate power generation; when it is determined that the unit performance meets the performance requirements, the test blade profile coefficient is set as the current blade profile coefficient of the wind rotor blade, and the wind turbine is controlled to use the wind rotor blade to generate electricity. The present application solves the technical problem of low power generation efficiency of the wind turbine by optimizing the profile coefficient of the wind rotor blade with a teardrop-shaped profile, and significantly improves the power generation efficiency of the wind turbine. In addition, the design of the vertical axis makes the wind turbine more adaptable to wind direction, does not require a complex wind system, reduces maintenance costs, and enhances the stability and reliability of the system.

[0090] In an exemplary embodiment, the generation module is also used to: determine the expected wind rotor aerodynamic power from the blade design requirements provided by the target object; determine the wind rotor swept area corresponding to the expected wind rotor aerodynamic power, and determine the rotation diameter of the wind rotor blade and the blade height of the wind rotor blade corresponding to the wind rotor swept area; when it is determined that the ratio of the wind rotor radius to the blade height is greater than a preset ratio, perform wind rotor aerodynamic simulation to obtain simulation results; when it is determined that the wind rotor aerodynamic performance indicated by the simulation result is optimal, determine the fitting polynomial corresponding to the geometric shape of the wind rotor blade based on the ratio; display the geometric shape of the wind rotor blade in a visual manner, and set a test blade contour coefficient for the wind rotor blade according to the contour parameters of the geometric shape.

[0091] In an exemplary embodiment, the generating module is further used to: calculate the wind rotor rotation radius corresponding to the wind speed at the wind rotor blade using the power calculation formula of the desired wind rotor aerodynamic power, and calculate the wind rotor swept area based on the wind rotor rotation radius, wherein the power calculation formula is P=1 / 2(ρV 3 πR 2 ), where P represents power, ρ represents air density, V represents blade wind speed, and R represents the rotor rotation radius.

[0092] In an exemplary embodiment, the generating module is further used to: subtract the cavity radius from half of the rotation diameter to obtain the wind wheel radius, and determine the ratio of the wind wheel radius to the blade height, wherein the cavity radius represents the bottom radius of the cavity structure, and the cavity structure is located between the wind wheel blade and the blade hub.

[0093] In an exemplary embodiment, the generating module is further used to: determine the current geometric shape of the wind wheel according to the ratio, and determine a first mathematical polynomial used to describe the current geometric shape; set a first coefficient required for calculating the first mathematical polynomial, and use the first mathematical polynomial and wind speed parameters to calculate the wind wheel load to obtain load performance; after calculating the wind wheel load multiple times, determine the optimal load performance, and determine the first mathematical polynomial used in calculating the optimal load performance as a second mathematical polynomial; determine the geometric shape described by the second mathematical polynomial as a target geometric shape, and determine the contour parameters of the target geometric shape.

[0094] In an exemplary embodiment, the generating module is also used to: when using the test blade profile coefficient to simulate the performance of the unit during power generation, add a resistance-type wind tube in the wind wheel of the wind turbine to improve the low wind speed starting performance of the wind turbine.

[0095] An embodiment of the present application further provides a computer-readable storage medium, in which a computer program is stored, wherein the computer program is configured to execute the steps of any of the above method embodiments when running.

[0096] Optionally, in this embodiment, the storage medium may be configured to store a computer program for performing the following steps:

[0097] S1, determining a test blade profile coefficient set for the wind rotor blade, and generating a three-dimensional model of the wind rotor according to the test blade profile coefficient;

[0098] S2, determining a simulation test result of the three-dimensional model, wherein the simulation test result is used to indicate the performance of the wind turbine generator set when the wind turbine generator set uses the test blade profile coefficient to simulate power generation;

[0099] S3, when it is determined that the performance of the unit meets the performance requirements, setting the test blade profile coefficient as the current blade profile coefficient of the wind rotor blade, and controlling the wind turbine generator set to use the wind rotor blade to generate electricity.

[0100] 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.

[0101] 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 herein.

[0102] An embodiment of the present application further provides an electronic device, including a memory and a processor, wherein a computer program is stored in the memory, and the processor is configured to run the computer program to execute the steps in any one of the above method embodiments.

[0103] Optionally, in this embodiment, the processor may be configured to perform the following steps through a computer program:

[0104] S1, determining a test blade profile coefficient set for the wind rotor blade, and generating a three-dimensional model of the wind rotor according to the test blade profile coefficient;

[0105] S2, determining a simulation test result of the three-dimensional model, wherein the simulation test result is used to indicate the performance of the wind turbine generator set when the wind turbine generator set uses the test blade profile coefficient to simulate power generation;

[0106] S3, when it is determined that the performance of the unit meets the performance requirements, setting the test blade profile coefficient as the current blade profile coefficient of the wind rotor blade, and controlling the wind turbine generator set to use the wind rotor blade to generate electricity.

[0107] 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.

[0108] 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.

[0109] An embodiment of the present application further provides another computer program product, including 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 in any of the above method embodiments are implemented.

[0110] 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 in any one of the above method embodiments.

[0111] 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 herein.

[0112] Obviously, those skilled in the art should understand that the above modules or steps of the present application can be implemented by a general computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, they can be implemented by a program code executable by a computing device, so that 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 executed in a different order from that herein, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present application is not limited to any specific combination of hardware and software.

[0113] The above is only a preferred implementation 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 method for generating electricity based on a wind turbine generator set, characterized in that: The wind turbine generator set is at least equipped with a wind rotor blade with a teardrop-shaped profile, the wind rotor blade is fixed on the vertical axis of the wind turbine generator set through a blade hub, and the blade hub is connected to the generator through a driving device, including: Determining a test blade profile coefficient set for the wind rotor blade, and generating a three-dimensional model of the wind rotor according to the test blade profile coefficient; Determining a simulation test result of the three-dimensional model, wherein the simulation test result is used to indicate the performance of the wind turbine generator set when the wind turbine generator set uses the test blade profile coefficient to simulate power generation; When it is determined that the performance of the unit meets the performance requirements, the test blade profile coefficient is set as the current blade profile coefficient of the wind rotor blade, and the wind turbine generator set is controlled to generate electricity using the wind rotor blade.

2. The method according to claim 1, characterized in that Determining a test blade profile factor set for the wind rotor blade includes: Determine the desired wind rotor aerodynamic power from the blade design requirements provided by the target object; Determine a wind rotor swept area corresponding to the desired wind rotor aerodynamic power, and determine a rotation diameter of a wind rotor blade and a blade height of the wind rotor blade corresponding to the wind rotor swept area; When it is determined that the ratio of the wind wheel radius to the blade height is greater than a preset ratio, performing aerodynamic simulation of the wind wheel to obtain a simulation result; When it is determined that the aerodynamic performance of the wind rotor indicated by the simulation result is optimal, determining a fitting polynomial corresponding to the geometric shape of the wind rotor blade based on the ratio; The geometrical shape of the wind rotor blade is displayed in a visual manner, and a test blade profile coefficient is set for the wind rotor blade according to the profile parameters of the geometrical shape.

3. The method according to claim 2, characterized in that Determining the wind rotor swept area corresponding to the desired wind rotor aerodynamic power includes: The power calculation formula of the desired wind rotor aerodynamic power is used to calculate the wind rotor rotation radius corresponding to the wind speed at the wind rotor blade, and the wind rotor swept area is calculated based on the wind rotor rotation radius, wherein the power calculation formula is P=1 / 2(ρV 3 πR 2 ), where P represents power, ρ represents air density, V represents blade wind speed, and R represents the rotor rotation radius.

4. The method according to claim 2, characterized in that: When it is determined that the ratio of the wind wheel radius to the blade height is greater than a preset ratio, performing aerodynamic simulation of the wind wheel, before obtaining the simulation result, the method further includes: The wind wheel radius is obtained by subtracting the cavity radius from half of the rotation diameter, and the ratio of the wind wheel radius to the blade height is determined, wherein the cavity radius represents the bottom radius of the cavity structure, and the cavity structure is located between the wind wheel blade and the blade hub.

5. The method according to claim 2, characterized in that: The method further comprises: Performing polynomial fitting on the geometric shape to determine the profile parameters of the geometric shape includes: Determining a current geometric shape of the wind wheel according to the ratio, and determining a first mathematical polynomial for describing the current geometric shape; Setting a first coefficient required for calculating the first mathematical polynomial, and using the first mathematical polynomial and wind speed parameters to calculate the wind rotor load, to obtain load performance; After calculating the wind rotor load for multiple times, determining the optimal load performance, and determining the first mathematical polynomial used in calculating the optimal load performance as the second mathematical polynomial; The geometric shape described by the second mathematical polynomial is determined as a target geometric shape, and contour parameters of the target geometric shape are determined.

6. The method according to claim 5, characterized in that The method further comprises: When the test blade profile coefficient is used to simulate the performance of the unit during power generation, a resistance-type wind tube is added to the wind wheel of the wind generator set to improve the low wind speed starting performance of the wind generator set.

7. A wind turbine generator set, characterized in that: The wind turbine generator set is equipped with at least a wind rotor blade with a teardrop-shaped profile, and the wind rotor blade is fixed on the vertical axis of the wind turbine generator set through a blade hub, and the blade hub is connected to the generator through a driving device; wherein the outer contour of the wind rotor blade with a teardrop-shaped profile can be described by a mathematical polynomial method; the vertical axis is used to support the wind rotor blade, and rotates under the rotation of the wind rotor blade to achieve energy conversion.

8. A power generation device based on a wind turbine generator set, characterized in that: include: A generating module, used to determine a test blade profile coefficient set for a wind rotor blade, and generate a three-dimensional model of the wind rotor according to the test blade profile coefficient; A determination module, used to determine a simulation test result of the three-dimensional model, wherein the simulation test result is used to indicate the performance of the wind turbine generator set when the wind turbine generator set uses the test blade profile coefficient to simulate power generation; The power generation module is used to set the test blade profile coefficient as the current blade profile coefficient of the wind rotor blade when it is determined that the performance of the unit meets the performance requirements, and control the wind turbine generator set to use the wind rotor blade to generate electricity.

9. 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 6 when executed.

10. 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 6 through the computer program.

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