Intelligent speed regulation control method and system for small wind turbine generator set and storage medium

Abstract

The application provides a small wind turbine intelligent speed regulation control method, system and storage medium, and belongs to the field of wind turbine. The method comprises the following steps: determining the current wind condition according to the wind speed; in the case that the current wind condition is long-time strong wind condition, passive speed regulation is carried out through a passive speed regulation component to realize rapid wind avoidance; analyzing the reset torque borne by the tail rudder according to the tail rudder position; calculating the windward component of the wind wheel aerodynamic torque according to the reset torque; obtaining the variable pitch demand of the active speed regulation component according to the wind speed, the windward component of the wind wheel aerodynamic torque and the theoretical relationship curve of the pitch angle, and carrying out variable pitch until the wind turbine is in the windward state; collecting the corresponding relationship among the wind speed, the wind speed change rate, the pitch angle and the windward component of the wind wheel aerodynamic torque when the wind turbine is in the windward state, and generating an actual relationship curve of the wind speed, the wind wheel aerodynamic torque, the windward component and the pitch angle for iterating the theoretical relationship curve of the wind speed, the wind wheel aerodynamic torque, the windward component and the pitch angle.

Description

Technical Field

[0001] This invention relates to the field of wind turbine generator sets, and more specifically to an intelligent speed control method for small wind turbine generator sets, an intelligent speed control system for small wind turbine generator sets, and a machine-readable storage medium. Background Technology

[0002] Small wind turbine generators typically employ two passive speed control methods: rotor yaw or mechanical pitch control. Passive speed control methods are simple in structure and have a fast response time, but they have the following disadvantages:

[0003] In strong winds, the unit is in a non-wind-facing state for a long time, resulting in uneven stress on the three blades. This can easily increase the fatigue load on the unit, causing serious wear and tear and reducing its service life.

[0004] When encountering strong winds and gusts, the generator unit may shut down due to excessive speed, reducing wind energy utilization and lowering power generation revenue. Frequent start-ups and shutdowns during strong winds can result in significant power loss.

[0005] The wind conditions experienced by wind turbines vary depending on their location, resulting in deviations from theoretical calculations and preventing the power generation from reaching the ideal level.

[0006] To ensure stable speed regulation of wind turbine generators and improve wind energy utilization during strong winds, a new speed regulation method will be provided. Summary of the Invention

[0007] The purpose of this invention is to provide a method, system, and storage medium for intelligent speed regulation control of small wind turbine generator sets. When encountering prolonged strong winds, this method uses a passive speed regulation mechanism to quickly avoid wind damage, preventing the wind turbine from running too fast and the unit from bearing excessive load. Then, an active speed regulation component is used to adjust the wind turbine according to the theoretical relationship curve between wind speed, the windward component of the wind turbine aerodynamic torque, and the blade pitch angle, so that the wind turbine is in the windward state, ensuring that the three blades are subjected to uniform force, while improving wind energy utilization and increasing power generation revenue.

[0008] To achieve the above objectives, a first aspect of the present invention provides an intelligent speed control method for a small wind turbine generator set, the method comprising:

[0009] S1: Determine the current wind conditions based on wind speed;

[0010] S2: When it is determined that the current wind condition is a prolonged strong wind condition, the passive speed regulation component is used to achieve rapid wind shelter;

[0011] S3: Analyze the reset torque borne by the tail rudder based on its position;

[0012] S4: Calculate the windward component of the wind turbine aerodynamic torque based on the reset torque;

[0013] S5: Obtain the pitch requirements of the active speed control component based on the theoretical relationship curve between wind speed, the wind turbine aerodynamic torque component and the pitch angle.

[0014] S6: Perform pitch adjustment according to the pitch adjustment requirements;

[0015] S7: Repeat S3-S6 until the wind turbine is facing the wind.

[0016] S8: Collect the wind speed and the relationship between wind speed change rate and blade pitch angle when the wind turbine is in the windward state, and generate the actual relationship curves between wind speed, wind turbine aerodynamic torque component and blade pitch angle.

[0017] S9: Iterate the theoretical relationship curves between wind speed, the wind turbine aerodynamic torque, and the pitch angle using the actual relationship curves of wind speed, wind turbine aerodynamic torque, and pitch angle.

[0018] In this embodiment of the application, the method further includes:

[0019] When the current wind condition is determined to be an extreme gust or a short-term strong wind, the passive speed regulation component can be used to quickly avoid the wind, and after the wind speed decreases, the passive speed regulation component can automatically restore the windward state.

[0020] Extreme gusts or short-term strong winds are sudden wind conditions that last for a short period of time. The wind conditions will quickly return to a level similar to the previous ones. The passive speed control component can automatically restore the windward state, with a fast response speed.

[0021] In this embodiment of the application, the wind turbine is determined to be in an upwind state by the following methods:

[0022] Calculate the angle between the wind direction and the tail rudder position;

[0023] If the included angle is less than the preset angle, the current wind turbine generator is in the windward state.

[0024] In this embodiment of the application, the analysis of the reset torque borne by the tail rudder based on the tail rudder position includes:

[0025] Calculate the first angle between the tail rudder and the nacelle based on the tail rudder position;

[0026] The reset torque borne by the tail rudder is calculated based on the weight of the tail rudder and the first included angle.

[0027] In this embodiment of the application, calculating the windward component of the wind turbine aerodynamic torque based on the reset torque includes:

[0028] The wind turbine deflection torque is obtained from the reset torque;

[0029] Calculate the wind turbine deflection angle based on the wind turbine deflection torque and wind speed;

[0030] The windward component of the wind turbine aerodynamic torque is calculated based on the wind turbine deflection angle, wind speed, and wind turbine swept area.

[0031] The second aspect of this application provides an intelligent speed control system for a small wind turbine generator set, including: an active speed control component, a passive speed control component, a detection component, and a speed control unit.

[0032] The passive speed regulation component is used to achieve rapid wind avoidance by passively regulating speed when the current wind condition is determined to be a prolonged strong wind condition.

[0033] The detection component is used to collect the tail rudder position and pitch angle, wind speed, and wind direction of the wind turbine generator set.

[0034] The speed control unit is used for:

[0035] The reset torque borne by the tail rudder is analyzed based on its position.

[0036] Calculate the windward component of the wind turbine aerodynamic torque based on the reset torque;

[0037] The pitch requirement of the active speed regulation component is obtained based on the theoretical relationship curve between wind speed, the wind turbine aerodynamic torque component and the pitch angle, and the pitch is adjusted until the wind turbine is in the windward state.

[0038] The relationship between wind speed and wind speed change rate and blade pitch angle when the wind turbine is in the windward state is collected, and the actual relationship curves of wind speed, wind turbine aerodynamic torque component and blade pitch angle are generated.

[0039] The theoretical relationship curves between wind speed, the wind turbine aerodynamic torque, and the pitch angle were iterated using the actual relationship curves of wind speed, wind turbine aerodynamic torque, and pitch angle.

[0040] Through the above-mentioned technical means, when encountering prolonged strong winds, the passive speed regulation mechanism can quickly avoid the wind, preventing the wind turbine speed from being too high and the unit from bearing too much load. Then, the active speed regulation component is used to adjust according to the theoretical relationship curve between wind speed, the windward component of the wind turbine aerodynamic torque and the blade pitch angle, so that the wind turbine is in the windward state, ensuring that the three blades are evenly stressed, while improving wind energy utilization and increasing power generation revenue.

[0041] In this embodiment of the application, the detection component includes an anemometer, a pitch angle acquisition device, and a passive speed control component angle encoder;

[0042] The anemometer is used to collect wind speed and wind direction;

[0043] The passive speed control component angle encoder is used to collect the tail rudder position of the wind turbine generator set.

[0044] The pitch angle acquisition device is used to acquire the pitch angle of the wind turbine generator set.

[0045] In this embodiment of the application, the speed control unit includes:

[0046] The recording module is used to record the tail rudder position and pitch angle, wind speed and wind direction of the wind turbine generator set collected by the detection component;

[0047] The analysis module is used to analyze the reset torque experienced by the tail rudder based on its position.

[0048] Calculate the windward component of the wind turbine aerodynamic torque based on the reset torque;

[0049] The pitch requirement of the active speed control component is obtained based on the theoretical relationship curve between wind speed, the wind turbine aerodynamic torque component and the pitch angle.

[0050] The control module is used for:

[0051] Pitch according to the pitch requirements;

[0052] The relationship between wind speed and wind speed change rate and blade pitch angle when the wind turbine is in the windward state is collected, and the actual relationship curves of wind speed, wind turbine aerodynamic torque component and blade pitch angle are generated.

[0053] The theoretical relationship curves between wind speed, the wind turbine aerodynamic torque, and the pitch angle were iterated using the actual relationship curves of wind speed, wind turbine aerodynamic torque, and pitch angle.

[0054] In this embodiment, the passive speed control component is a wind turbine stall deflection component, and the active speed control component is an electric pitch control component.

[0055] A third aspect of this application provides a machine-readable storage medium storing instructions for causing a machine to execute the intelligent speed control method for small wind turbine generators described in this application.

[0056] Through the above technical solution, when encountering prolonged strong winds, a passive speed regulation mechanism can quickly avoid wind erosion, preventing short-term overspeeding of the wind turbine and improving the reliability of the unit's speed regulation. Then, an active speed regulation component is used to adjust the turbine according to the theoretical relationship curve between wind speed, the windward component of the rotor aerodynamic torque, and the blade pitch angle, so that the turbine is in the windward position, ensuring uniform force on the three blades, while improving wind energy utilization and increasing power generation revenue. The actual relationship curves between wind speed, the windward component of the rotor aerodynamic torque, and the blade pitch angle after the turbine is in the windward position are recorded. Through iterative replacement, the relationship curves between wind speed, the windward component of the rotor aerodynamic torque, and the blade pitch angle are made to better fit the actual state, so as to realize intelligent and rapid speed regulation of the wind turbine generator set.

[0057] This method can provide wind speed, wind turbine aerodynamic torque frontal component and blade pitch angle actual relationship curves suitable for wind turbines at different locations, and apply this relationship to the actual speed regulation operation of the unit to improve the stability of the unit speed regulation process.

[0058] The system employs two stall control systems: a passive speed control component and an active speed control component, to improve the safety and reliability of the unit. When one speed control system fails, the other stall control system can provide stall protection for the unit.

[0059] Other features and advantages of the embodiments of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0060] The accompanying drawings are provided to further illustrate embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. In the drawings:

[0061] Figure 1 This is a flowchart of an intelligent speed control method for a small wind turbine generator set provided by one embodiment of the present invention;

[0062] Figure 2 This is a block diagram of an intelligent speed control system for a small wind turbine generator set provided in one embodiment of the present invention. Detailed Implementation

[0063] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0064] Figure 1 This is a flowchart of an intelligent speed control method for a small wind turbine generator set according to one embodiment of the present invention. Figure 1 As shown, the method includes:

[0065] S1: Determine the current wind conditions based on wind speed. In this embodiment, the rapid changes in wind speed can be analyzed by performing a moving average calculation based on wind speeds at different times, serving as a condition for judging the current wind conditions. In this embodiment, wind conditions are divided into normal wind conditions and abnormal wind conditions. Abnormal wind conditions are further divided into long-term strong wind conditions, short-term strong wind conditions, and extreme gust wind conditions.

[0066] S2: When the current wind condition is determined to be a prolonged period of strong wind, the passive speed regulation component is used to achieve rapid wind avoidance. The passive speed regulation component is mainly responsible for the wind avoidance function of small wind turbine generators and the rapid stall function of the unit in strong wind conditions, which is usually achieved by the tail rudder of the wind turbine.

[0067] S3: Analyze the reset torque borne by the tail rudder based on its position. In this embodiment, the reset torque borne by the tail rudder is analyzed in the following manner:

[0068] Calculate the first angle between the tail rudder and the nacelle based on the tail rudder position;

[0069] The reset torque borne by the tail rudder is calculated based on the weight of the tail rudder and the first included angle.

[0070] S4: Calculate the windward component of the wind turbine aerodynamic torque based on the reset torque. In this embodiment, the windward component of the wind turbine aerodynamic torque is calculated as follows:

[0071] The purpose of pitch control is to obtain the rotor deflection torque based on the reset torque, so that the wind turbine generator is in a relatively stable upwind state. In this state, the reset torque is equal to the rotor deflection torque.

[0072] The wind turbine deflection angle is calculated based on the turbine deflection torque and wind speed. There is a corresponding relationship between the turbine deflection torque, the turbine side deflection angle, and the turbine aerodynamic torque. The turbine aerodynamic torque is also related to the wind speed, the turbine swept area, and the turbine deflection angle. Based on these relationships, the turbine deflection angle and turbine aerodynamic torque can be calculated. The turbine swept area can be obtained from the turbine system parameters.

[0073] The windward component of the wind turbine aerodynamic torque is calculated based on the rotor deflection angle, wind speed, and turbine swept area. The windward component of the wind turbine aerodynamic torque is calculated using the rotor aerodynamic torque and rotor deflection angle. There is a corresponding relationship between the rotor aerodynamic torque and wind speed, turbine swept area, and rotor deflection angle; based on these relationships, the windward component of the rotor aerodynamic torque can be calculated.

[0074] S5: Obtain the pitch requirements of the active speed control component based on the theoretical relationship curve between wind speed, the wind turbine aerodynamic torque component and the pitch angle.

[0075] S6: Adjust the pitch according to the pitch requirements; In this embodiment, an active speed control component is used to adjust the pitch according to the pitch requirements. The active speed control component is usually an electric pitch control component, and the electric drive method is not limited. It can adopt a unified drive or a three-blade structure with separate drives. This component mainly undertakes the steady-state speed regulation function of the unit in the windward state. That is, when the wind speed increases, the active speed control component adjusts the blade pitch angle to reduce the windward area of ​​the wind turbine. In this embodiment, the active speed control component actively adjusts the speed according to the theoretical relationship curve between wind speed, the windward component of the wind turbine aerodynamic torque and the blade pitch angle, so as to restore the wind turbine to the windward state.

[0076] S7: Repeat S3-S6 until the wind turbine is in an upwind state; in this embodiment, the wind turbine is determined to be in an upwind state in the following way:

[0077] Calculate the angle between the wind direction and the tail rudder position;

[0078] If the included angle is less than a preset angle, the wind turbine is currently in a windward state. In practical applications, if the wind direction and the tail rudder position are in a straight line, the wind turbine is in a windward state; if the wind direction and the tail rudder position form a 90-degree angle, the wind turbine is in a leeward state. In this embodiment, the preset angle is 0.5 degrees. Using the preset angle as the standard for judging the windward state allows for a certain error margin.

[0079] S8: Collect the wind speed and the relationship between wind speed change rate and blade pitch angle when the wind turbine is in the windward state, and generate the actual relationship curves between wind speed, wind turbine aerodynamic torque component and blade pitch angle.

[0080] S9: Iterate the theoretical relationship curves between wind speed, the wind turbine aerodynamic torque, and the pitch angle using the actual relationship curves of wind speed, wind turbine aerodynamic torque, and pitch angle.

[0081] In this embodiment of the application, the method further includes:

[0082] When the current wind condition is determined to be an extreme gust or a short-term strong wind, the passive speed regulation component can be used to quickly avoid the wind, and after the wind speed decreases, the passive speed regulation component can automatically restore the windward state.

[0083] Extreme gusts or short-term strong winds are sudden wind conditions that last for a short period of time. The wind conditions will quickly return to a level similar to the previous ones. The passive speed control component can automatically restore the windward state, with a fast response speed.

[0084] The second aspect of this application provides an intelligent speed control system for small wind turbine generator sets, such as... Figure 2 As shown, it includes: an active speed control component, a passive speed control component, a detection component, and a speed control unit;

[0085] The passive speed regulation component is used to achieve rapid wind avoidance by passively regulating speed when the current wind condition is determined to be a prolonged strong wind condition.

[0086] The detection component is used to collect the tail rudder position and pitch angle, wind speed, and wind direction of the wind turbine generator set.

[0087] The speed control unit is used for:

[0088] The reset torque borne by the tail rudder is analyzed based on its position.

[0089] Calculate the windward component of the wind turbine aerodynamic torque based on the reset torque;

[0090] The pitch requirement of the active speed regulation component is obtained based on the theoretical relationship curve between wind speed, the wind turbine aerodynamic torque component and the pitch angle, and the pitch is adjusted until the wind turbine is in the windward state.

[0091] The relationship between wind speed and wind speed change rate and blade pitch angle when the wind turbine is in the windward state is collected, and the actual relationship curves of wind speed, wind turbine aerodynamic torque component and blade pitch angle are generated.

[0092] The theoretical relationship curves between wind speed, the wind turbine aerodynamic torque, and the pitch angle were iterated using the actual relationship curves of wind speed, wind turbine aerodynamic torque, and pitch angle.

[0093] Through the above-mentioned technical means, when encountering prolonged strong winds, the passive speed regulation mechanism can quickly avoid the wind, preventing the wind turbine speed from being too high and the unit from bearing too much load. Then, the active speed regulation component is used to adjust according to the theoretical relationship curve between wind speed, the windward component of the wind turbine aerodynamic torque and the blade pitch angle, so that the wind turbine is in the windward state, ensuring that the three blades are evenly stressed, while improving wind energy utilization and increasing power generation revenue.

[0094] In this embodiment of the application, the detection component includes an anemometer, a pitch angle acquisition device, and a passive speed control component angle encoder;

[0095] The anemometer is used to collect wind speed and wind direction;

[0096] The passive speed control component angle encoder is used to collect the tail rudder position of the wind turbine generator set.

[0097] The pitch angle acquisition device is used to acquire the pitch angle of the wind turbine generator set.

[0098] In this embodiment of the application, the speed control unit includes:

[0099] The recording module is used to record the tail rudder position and pitch angle, wind speed and wind direction of the wind turbine generator set collected by the detection component;

[0100] The analysis module is used to analyze the reset torque experienced by the tail rudder based on its position.

[0101] Calculate the windward component of the wind turbine aerodynamic torque based on the reset torque;

[0102] The pitch requirement of the active speed control component is obtained based on the theoretical relationship curve between wind speed, the wind turbine aerodynamic torque component and the pitch angle.

[0103] The control module is used for:

[0104] Pitch according to the pitch requirements;

[0105] The relationship between wind speed and wind speed change rate and blade pitch angle when the wind turbine is in the windward state is collected, and the actual relationship curves of wind speed, wind turbine aerodynamic torque component and blade pitch angle are generated.

[0106] The theoretical relationship curves between wind speed, the wind turbine aerodynamic torque, and the pitch angle were iterated using the actual relationship curves of wind speed, wind turbine aerodynamic torque, and pitch angle.

[0107] In this embodiment, the passive speed control component is a wind turbine stall deflection component, and the active speed control component is an electric pitch control component.

[0108] A third aspect of this application provides a machine-readable storage medium storing instructions for causing a machine to execute the intelligent speed control method for small wind turbine generators described in this application.

[0109] Those skilled in the art will understand that all or part of the steps in the methods of the above embodiments can be implemented by a program instructing related hardware. This program is stored in a storage medium and includes several instructions to cause a microcontroller, chip, or processor to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0110] The optional embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details described above. Within the scope of the technical concept of the embodiments of the present invention, various simple modifications can be made to the technical solutions of the embodiments of the present invention, and these simple modifications all fall within the protection scope of the embodiments of the present invention. It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the embodiments of the present invention will not further describe the various possible combinations.

[0111] Furthermore, various different embodiments of the present invention can be combined in any way, as long as they do not violate the spirit of the embodiments of the present invention, they should also be regarded as the content disclosed by the embodiments of the present invention.

Claims

1. A method for intelligent speed control of a small wind turbine generator set, characterized in that, The method includes: S1: Determine the current wind conditions based on wind speed; S2: When the current wind condition is determined to be a prolonged strong wind condition, the passive speed regulation component is used to achieve rapid wind shelter; S3: Analyze the reset torque borne by the tail rudder based on its position; S4: Calculate the windward component of the wind turbine aerodynamic torque based on the reset torque; S5: Obtain the pitch requirements of the active speed control component based on the theoretical relationship curve between wind speed, the wind turbine aerodynamic torque component and the pitch angle. S6: Perform pitch adjustment according to the pitch adjustment requirements; S7: Repeat S3-S6 until the wind turbine is facing the wind. S8: Collect the wind speed and the relationship between wind speed change rate and blade pitch angle when the wind turbine is in the windward state, and generate the actual relationship curves between wind speed, wind turbine aerodynamic torque component and blade pitch angle. S9: Iterate the theoretical relationship curves between wind speed, the wind turbine aerodynamic torque, and the pitch angle using the actual relationship curves of wind speed, wind turbine aerodynamic torque, and pitch angle.

2. The intelligent speed control method for small wind turbine generator sets according to claim 1, characterized in that, The method further includes: When the current wind condition is determined to be an extreme gust or a short-term strong wind, the passive speed regulation component can be used to quickly avoid the wind, and after the wind speed decreases, the passive speed regulation component can be used to automatically restore the windward state.

3. The intelligent speed control method for small wind turbine generator sets according to claim 1, characterized in that, The following methods can be used to determine if a wind turbine is in an upwind position: Calculate the angle between the wind direction and the tail rudder position; If the included angle is less than the preset angle, the current wind turbine generator is in the windward state.

4. The intelligent speed control method for small wind turbine generator sets according to claim 1, characterized in that, The analysis of the tail rudder's position determines the restoring torque it experiences, including: Calculate the first angle between the tail rudder and the nacelle based on the tail rudder position; The reset torque borne by the tail rudder is calculated based on the weight of the tail rudder and the first included angle.

5. The intelligent speed control method for small wind turbine generator sets according to claim 1, characterized in that, The windward component of the wind turbine aerodynamic torque is calculated based on the reset torque, including: The wind turbine deflection torque is obtained from the reset torque; Calculate the wind turbine deflection angle based on the wind turbine deflection torque and wind speed; The windward component of the wind turbine aerodynamic torque is calculated based on the wind turbine deflection angle, wind speed, and wind turbine swept area.

6. A smart speed control system for a small wind turbine generator set, characterized in that, include: Active speed control component, passive speed control component, detection component and speed control control unit; The passive speed regulation component is used to achieve rapid wind avoidance by passively adjusting the speed when the current wind condition is determined to be a prolonged strong wind condition. The detection component is used to collect the tail rudder position and pitch angle, wind speed, and wind direction of the wind turbine generator set. The speed control unit is used for: The reset torque borne by the tail rudder is analyzed based on its position. Calculate the windward component of the wind turbine aerodynamic torque based on the reset torque; The pitch requirement of the active speed regulation component is obtained based on the theoretical relationship curve between wind speed, the wind turbine aerodynamic torque component and the pitch angle, and the pitch is adjusted until the wind turbine is in the windward state. The relationship between wind speed and wind speed change rate and blade pitch angle when the wind turbine is in the windward state is collected, and the actual relationship curves of wind speed, wind turbine aerodynamic torque component and blade pitch angle are generated. The theoretical relationship curves between wind speed, the wind turbine aerodynamic torque, and the pitch angle were iterated using the actual relationship curves of wind speed, wind turbine aerodynamic torque, and pitch angle.

7. The intelligent speed control system for small wind turbine generator sets according to claim 6, characterized in that, The detection components include an anemometer, a pitch angle acquisition device, and a passive speed control component angle encoder. The anemometer is used to collect wind speed and wind direction; The passive speed control component angle encoder is used to collect the tail rudder position of the wind turbine generator set. The pitch angle acquisition device is used to acquire the pitch angle of the wind turbine generator set.

8. The intelligent speed control system for small wind turbine generator sets according to claim 6, characterized in that, The speed control unit includes: The recording module is used to record the tail rudder position and pitch angle, wind speed and wind direction of the wind turbine generator set collected by the detection component; The analysis module is used to analyze the reset torque experienced by the tail rudder based on its position. Calculate the windward component of the wind turbine aerodynamic torque based on the reset torque; The pitch requirement of the active speed control component is obtained based on the theoretical relationship curve between wind speed, the wind turbine aerodynamic torque component and the pitch angle. The control module is used for: Pitch according to the pitch requirements; The relationship between wind speed and wind speed change rate and blade pitch angle when the wind turbine is in the windward state is collected, and the actual relationship curves of wind speed, wind turbine aerodynamic torque component and blade pitch angle are generated. The theoretical relationship curves between wind speed, the wind turbine aerodynamic torque, and the pitch angle were iterated using the actual relationship curves of wind speed, wind turbine aerodynamic torque, and pitch angle.

9. The intelligent speed control system for small wind turbine generator sets according to claim 6, characterized in that, The passive speed control component adopts a wind turbine stall deflection component, and the active speed control component adopts an electric pitch control component.

10. A machine-readable storage medium storing instructions thereon, characterized in that, This instruction is used to cause the machine to perform the intelligent speed regulation control method for small wind turbine generator sets as described in any one of claims 1-5 of this application.

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