CN117212046A - Ultra-high flexible wind power tower barrel blade angle control method and system - Google Patents
Ultra-high flexible wind power tower barrel blade angle control method and system Download PDFInfo
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Abstract
The application relates to the technical field of wind power towers and discloses a method and a system for controlling blade angles of an ultra-high flexible wind power tower, wherein the method and the system acquire real-time rotating speeds of fans and send the real-time rotating speeds to a controller so that the controller receives the real-time rotating speeds; collecting real-time voltage and real-time current of a variable-pitch motor, determining the motor rotating speed of the variable-pitch motor according to the real-time voltage and the real-time current, and controlling the blade angle of the fan for the first time according to the motor rotating speed of the variable-pitch motor; after the first control is finished, a first target blade angle value of the fan is obtained; according to the method, the cause of vibration of the wind power tower can be effectively evaluated by detecting and analyzing the wind power tower, and the stress condition of the blades can be improved by controlling the blade angles for multiple times, so that the aim of inhibiting the vibration of the wind power tower is fulfilled.
Description
Technical Field
The application relates to the technical field of wind power towers, in particular to a method and a system for controlling blade angles of an ultra-high flexible wind power tower.
Background
With the continuous increase of the single-machine capacity of the wind turbine, the ultra-high flexible tower is widely adopted in the wind turbine, the coupling vibration between the tower and the wind wheel becomes one of important factors threatening the safety of the wind turbine, and the inhibition of the vibration of the tower becomes a research and attention focus in the industry. The wind power tower drum is used as a high-rise structure, and is easy to generate coupling vibration with the wind wheel under the action of wind, so that the fatigue loosening of the connecting part of the tower drum is caused, even the instability and collapse of the tower drum are caused, and the service life of the wind power generator set is shortened.
In the current wind power tower vibration research, the forward and backward swing of the tower is considered to be related to wind load, the lateral swing of the tower is considered to be related to wind wheel output and a transmission chain, but the coupling vibration research on the natural frequency of the wind power tower and the rotating speed frequency of a wind turbine is less, the resonance between the rotating speed of the wind wheel and the tower is generally avoided only in the design stage, but factors such as installation, operation and looseness of a connecting part of the tower can change the natural frequency of the tower, and the frequency resonance research of the tower and the wind wheel is relatively weak. The wind power tower vibration inhibition effect is poor. The calculated amount of the wind power tower vibration suppression control strategy is too large. The cost for restraining the vibration of the wind power tower is high.
Disclosure of Invention
Aiming at the problems in the prior art, the application aims to provide the blade angle control method and the blade angle control system for the ultra-high flexible wind power tower, which can effectively evaluate the cause of vibration of the tower and the vibration coupling effect between the tower and the blades by detecting and analyzing the wind power tower, and improve the stress condition of the blades by properly controlling the blade angle so as to further achieve the aim of inhibiting the vibration of the tower.
In order to achieve the above purpose, the application provides a method for controlling blade angles of an ultra-high flexible wind power tower, which comprises the following steps:
acquiring the real-time rotating speed of the fan, and sending the real-time rotating speed to a controller so that the controller receives the real-time rotating speed;
collecting real-time voltage and real-time current of a variable-pitch motor, determining the motor rotating speed of the variable-pitch motor according to the real-time voltage and the real-time current, and controlling the blade angle of the fan for the first time according to the motor rotating speed of the variable-pitch motor;
after the first control is finished, a first target blade angle value of the fan is obtained;
and determining the second motor rotating speed of the variable-pitch motor according to the first target blade angle value, and controlling the blade angle of the fan again according to the second motor rotating speed of the variable-pitch motor.
In one embodiment, when determining the motor rotation speed of the pitch motor according to the real-time voltage and the real-time current, and performing the first control on the blade angle of the fan according to the motor rotation speed of the pitch motor, the method includes:
collecting control current, control voltage and motor rotation speed corresponding to the variable pitch motor under different loads;
establishing a first association relation of the control current, the control voltage and the motor rotating speed of the variable pitch motor according to the data fitting of the control current, the control voltage and the motor rotating speed;
determining and obtaining the motor rotating speed of the variable pitch motor based on the real-time voltage, the real-time current and the first association relation;
determining and obtaining a first control blade angle value of the fan according to a preset mode according to the motor rotating speed of the variable-pitch motor;
and controlling the blade angle of the fan for the first time based on the first time control blade angle value.
In one embodiment, when determining the second motor rotation speed of the variable pitch motor according to the first target blade angle value of the fan and controlling the blade angle of the fan again according to the second motor rotation speed of the variable pitch motor, the method includes:
according to the corresponding paddle angle in the historical empirical data and the data fitting of the motor rotating speed, establishing a second association relation between the paddle angle and the motor rotating speed;
determining a second engine speed according to the first target blade angle value and a preset simulation condition through the second association relation; the second association relation is a relation function related to blade angle, simulation condition and motor rotating speed;
and sending the second engine rotating speed to the controller so that the controller drives the variable pitch motor to control the blade angle of the fan again according to the second engine rotating speed.
In one embodiment, after controlling the blade angle of the fan again according to the second motor rotation speed of the variable pitch motor, the method further comprises:
collecting parameter signals of each blade of the fan;
calculating a wind speed at each blade corresponding position based on the parameter signals, wherein when calculating the wind speed at each blade corresponding position, calculation is performed based on a wind model for constructing a simulation model corresponding to the pitch motor and a blade angle compensator for receiving the parameter signals and corresponding simulation parameter signals generated by the wind model and calculating an error signal between the parameter signals and the simulation parameter signals, and the blade angle compensator adjusts the wind model based on the error signal
Determining a characteristic index based on the wind speed at the corresponding position of each blade, and calculating a blade angle compensation value of each blade according to the characteristic index;
and compensating and adjusting the blade angle of each blade according to the calculated blade angle compensation value.
In one embodiment, when determining a characteristic index based on a wind speed at a corresponding position of each blade and calculating a blade angle compensation value for each blade from the characteristic index, the method includes:
calculating a blade angle compensation value of the blade according to the following formula:
wherein w is a blade angle compensation value of the blade, αi is a wind speed at a position corresponding to the ith blade, βi is a wind speed determination characteristic index at the position corresponding to the ith blade, a1 is a first target blade angle value, and a2 is a second target blade angle value.
In order to achieve the above object, the present application provides an ultra-high flexible wind power tower blade angle control system, the system comprising:
the rotating speed receiving module is used for acquiring the real-time rotating speed of the fan and sending the real-time rotating speed to the controller so that the controller receives the real-time rotating speed;
the first control module is used for collecting real-time voltage and real-time current of the variable-pitch motor, determining the motor rotating speed of the variable-pitch motor according to the real-time voltage and the real-time current, and carrying out first control on the blade angle of the fan according to the motor rotating speed of the variable-pitch motor;
the numerical value acquisition module is used for acquiring a first target blade angle numerical value of the fan after the first control is finished;
and the secondary control module is used for determining the second motor rotating speed of the variable-pitch motor according to the first target blade angle value and controlling the blade angle of the fan again according to the second motor rotating speed of the variable-pitch motor.
In one embodiment, the first control module is specifically configured to:
the first control module is used for collecting control current, control voltage and motor rotating speed corresponding to the variable pitch motor under different loads;
the first control module is used for building a first association relation of the control current, the control voltage and the motor rotating speed of the variable pitch motor according to data fitting of the control current, the control voltage and the motor rotating speed;
the first control module is used for determining and obtaining the motor rotating speed of the variable pitch motor based on the real-time voltage, the real-time current and the first association relation;
the first control module is used for determining and obtaining a first control blade angle value of the fan according to a preset mode according to the motor rotating speed of the variable-pitch motor;
the first control module is used for carrying out first control on the blade angle of the fan based on the first control blade angle value.
In one embodiment, the re-control module is specifically configured to:
the secondary control module is used for building a second association relation about the blade angle and the motor rotating speed according to data fitting of the corresponding blade angle and the motor rotating speed in the historical empirical data;
the secondary control module is used for determining and obtaining a second engine speed according to the first target blade angle value and a preset simulation condition through the second association relation; the second association relation is a relation function related to blade angle, simulation condition and motor rotating speed;
and the secondary control module is used for sending the second engine rotating speed to the controller so that the controller drives the variable pitch motor to control the blade angle of the fan again according to the second engine rotating speed.
In one embodiment, the method further comprises:
the compensation module is used for collecting parameter signals of each blade of the fan;
the compensation module is further used for calculating the wind speed at each blade corresponding position based on the parameter signals, wherein when the wind speed at each blade corresponding position is calculated, calculation is performed based on a wind model and a blade angle compensator, the wind model is used for constructing a simulation model corresponding to the pitch motor, the blade angle compensator is used for receiving the parameter signals and corresponding simulation parameter signals generated by the wind model, calculating error signals between the parameter signals and the simulation parameter signals, and the blade angle compensator is used for adjusting the wind model based on the error signals
The compensation module is also used for determining a characteristic index based on the wind speed at the corresponding position of each blade and calculating a blade angle compensation value of each blade according to the characteristic index;
the compensation module is also used for carrying out compensation adjustment on the blade angle of each blade according to the calculated blade angle compensation value.
In one embodiment, the compensation module is specifically configured to:
the compensation module is used for calculating a blade angle compensation value of the blade according to the following formula:
wherein w is a blade angle compensation value of the blade, αi is a wind speed at a position corresponding to the ith blade, βi is a wind speed determination characteristic index at the position corresponding to the ith blade, a1 is a first target blade angle number, and a2 is a second target blade angle number.
The application provides a method and a system for controlling blade angles of an ultra-high flexible wind power tower, which have the following beneficial effects compared with the prior art:
the application discloses a method and a system for controlling blade angles of an ultra-high flexible wind power tower, wherein the method and the system are used for acquiring real-time rotating speed of a fan and sending the real-time rotating speed to a controller so that the controller receives the real-time rotating speed; collecting real-time voltage and real-time current of a variable-pitch motor, determining the motor rotating speed of the variable-pitch motor according to the real-time voltage and the real-time current, and controlling the blade angle of the fan for the first time according to the motor rotating speed of the variable-pitch motor; after the first control is finished, a first target blade angle value of the fan is obtained; according to the method, the cause of vibration of the wind power tower can be effectively evaluated by detecting and analyzing the wind power tower, and the stress condition of the blades can be improved by controlling the blade angles for multiple times, so that the aim of inhibiting the vibration of the wind power tower is fulfilled.
Drawings
FIG. 1 shows a flow diagram of a method for controlling blade angle of an ultra-high flexible wind power tower in an embodiment of the application;
fig. 2 shows a schematic structural diagram of an ultra-high-flexibility wind power tower blade angle control system in an embodiment of the application.
Detailed Description
The following describes in further detail the embodiments of the present application with reference to the drawings and examples. The following examples are illustrative of the application and are not intended to limit the scope of the application.
In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
The following is a description of preferred embodiments of the application, taken in conjunction with the accompanying drawings.
As shown in fig. 1, the embodiment of the application discloses a method for controlling blade angles of an ultra-high flexible wind power tower, which comprises the following steps:
s110: acquiring the real-time rotating speed of the fan, and sending the real-time rotating speed to a controller so that the controller receives the real-time rotating speed;
in this embodiment, the real-time rotation speed of the fan may be detected by an over-wind speed detector, or may be detected by other devices, which is not particularly limited herein.
S120: collecting real-time voltage and real-time current of a variable-pitch motor, determining the motor rotating speed of the variable-pitch motor according to the real-time voltage and the real-time current, and controlling the blade angle of the fan for the first time according to the motor rotating speed of the variable-pitch motor;
in some embodiments of the present application, when determining a motor speed of the pitch motor according to the real-time voltage and the real-time current, and performing first control on a blade angle of the fan according to the motor speed of the pitch motor, the method includes:
collecting control current, control voltage and motor rotation speed corresponding to the variable pitch motor under different loads;
establishing a first association relation of the control current, the control voltage and the motor rotating speed of the variable pitch motor according to the data fitting of the control current, the control voltage and the motor rotating speed;
determining and obtaining the motor rotating speed of the variable pitch motor based on the real-time voltage, the real-time current and the first association relation;
determining and obtaining a first control blade angle value of the fan according to a preset mode according to the motor rotating speed of the variable-pitch motor;
and controlling the blade angle of the fan for the first time based on the first time control blade angle value.
In this embodiment, there is a certain association relationship between the control current, the control voltage, and the motor rotation speed, and there is a mapping relationship, and according to the control current and the control voltage, the control current and the control voltage may correspond to the motor rotation speed.
In this embodiment, the real-time voltage and real-time current are generated in real-time by controlling the blade angle.
In this embodiment, the motor rotation speed of the pitch motor may be obtained by mapping the obtained real-time voltage and real-time current with the first association relationship.
The beneficial effects of the technical scheme are as follows: the intelligent control of the blade angle can be realized, and the stability of the wind power tower can be ensured.
S130: after the first control is finished, a first target blade angle value of the fan is obtained;
s140: and determining the second motor rotating speed of the variable-pitch motor according to the first target blade angle value, and controlling the blade angle of the fan again according to the second motor rotating speed of the variable-pitch motor.
In some embodiments of the present application, when determining the second motor rotation speed of the pitch motor according to the first target blade angle value of the fan, and controlling the blade angle of the fan again according to the second motor rotation speed of the pitch motor, the method includes:
according to the corresponding paddle angle in the historical empirical data and the data fitting of the motor rotating speed, establishing a second association relation between the paddle angle and the motor rotating speed;
determining a second engine speed according to the first target blade angle value and a preset simulation condition through the second association relation; the second association relation is a relation function related to blade angle, simulation condition and motor rotating speed;
and sending the second engine rotating speed to the controller so that the controller drives the variable pitch motor to control the blade angle of the fan again according to the second engine rotating speed.
In this embodiment, the historical empirical data refers to historical control data for blade angle.
In this embodiment, there is a certain association relationship between the blade angle and the motor rotation speed, and there is a mapping relationship.
The beneficial effects of the technical scheme are as follows: through controlling the blade angle again, can effectually deal with the phenomenon that the fan rotational speed change rate that leads to because of wind speed mutation increases in the adjustment process, improve the accuracy that fan blade angle was adjusted, and control process is convenient, and measuring result is accurate and the process is reliable stable.
In some embodiments of the present application, after controlling the blade angle of the fan again according to the second motor rotation speed of the pitch motor, the method further includes:
collecting parameter signals of each blade of the fan;
calculating a wind speed at each blade corresponding position based on the parameter signals, wherein when calculating the wind speed at each blade corresponding position, calculation is performed based on a wind model for constructing a simulation model corresponding to the pitch motor and a blade angle compensator for receiving the parameter signals and corresponding simulation parameter signals generated by the wind model and calculating an error signal between the parameter signals and the simulation parameter signals, and the blade angle compensator adjusts the wind model based on the error signal
Determining a characteristic index based on the wind speed at the corresponding position of each blade, and calculating a blade angle compensation value of each blade according to the characteristic index;
and compensating and adjusting the blade angle of each blade according to the calculated blade angle compensation value.
Calculating a blade angle compensation value of the blade according to the following formula:
wherein w is a blade angle compensation value of the blade, αi is a wind speed at a position corresponding to the ith blade, βi is a wind speed determination characteristic index at the position corresponding to the ith blade, a1 is a first target blade angle value, and a2 is a second target blade angle value.
In this embodiment, the parameter signals may be converted and calculated to obtain the wind speed at the corresponding position of each blade.
In this embodiment, the second target blade angle value is acquired after the blade angle of the fan is controlled again according to the second motor rotation speed of the variable-pitch motor.
The beneficial effects of the technical scheme are as follows: according to the application, the characteristic index is determined based on the wind speed at the corresponding position of each blade, and the blade angle compensation value of each blade is calculated according to the characteristic index; the blade angle of each blade is compensated and adjusted according to the calculated blade angle compensation value, so that the targeted control of the blade angle of each blade is realized, the detection and analysis of the wind power tower barrel are further ensured, the cause of the vibration of the wind power tower barrel can be effectively evaluated, the stress condition of the blade can be improved through the multiple control of the blade angle, and the aim of inhibiting the vibration of the wind power tower barrel is fulfilled.
In order to further explain the technical idea of the application, the technical scheme of the application is described with specific application scenarios.
Correspondingly, as shown in fig. 2, the application further provides a blade angle control system of the ultra-high flexible wind power tower, which comprises:
the rotating speed receiving module is used for acquiring the real-time rotating speed of the fan and sending the real-time rotating speed to the controller so that the controller receives the real-time rotating speed;
the first control module is used for collecting real-time voltage and real-time current of the variable-pitch motor, determining the motor rotating speed of the variable-pitch motor according to the real-time voltage and the real-time current, and carrying out first control on the blade angle of the fan according to the motor rotating speed of the variable-pitch motor;
the numerical value acquisition module is used for acquiring a first target blade angle numerical value of the fan after the first control is finished;
and the secondary control module is used for determining the second motor rotating speed of the variable-pitch motor according to the first target blade angle value and controlling the blade angle of the fan again according to the second motor rotating speed of the variable-pitch motor.
In some embodiments of the present application, the first control module is specifically configured to:
the first control module is used for collecting control current, control voltage and motor rotating speed corresponding to the variable pitch motor under different loads;
the first control module is used for building a first association relation of the control current, the control voltage and the motor rotating speed of the variable pitch motor according to data fitting of the control current, the control voltage and the motor rotating speed;
the first control module is used for determining and obtaining the motor rotating speed of the variable pitch motor based on the real-time voltage, the real-time current and the first association relation;
the first control module is used for determining and obtaining a first control blade angle value of the fan according to a preset mode according to the motor rotating speed of the variable-pitch motor;
the first control module is used for carrying out first control on the blade angle of the fan based on the first control blade angle value.
In some embodiments of the present application, the first control module is specifically configured to:
the first control module is used for collecting control current, control voltage and motor rotating speed corresponding to the variable pitch motor under different loads;
the first control module is used for building a first association relation of the control current, the control voltage and the motor rotating speed of the variable pitch motor according to data fitting of the control current, the control voltage and the motor rotating speed;
the first control module is used for determining and obtaining the motor rotating speed of the variable pitch motor based on the real-time voltage, the real-time current and the first association relation;
the first control module is used for determining and obtaining a first control blade angle value of the fan according to a preset mode according to the motor rotating speed of the variable-pitch motor;
the first control module is used for carrying out first control on the blade angle of the fan based on the first control blade angle value.
In some embodiments of the present application, the re-control module is specifically configured to:
the secondary control module is used for building a second association relation about the blade angle and the motor rotating speed according to data fitting of the corresponding blade angle and the motor rotating speed in the historical empirical data;
the secondary control module is used for determining and obtaining a second engine speed according to the first target blade angle value and a preset simulation condition through the second association relation; the second association relation is a relation function related to blade angle, simulation condition and motor rotating speed;
and the secondary control module is used for sending the second engine rotating speed to the controller so that the controller drives the variable pitch motor to control the blade angle of the fan again according to the second engine rotating speed.
In some embodiments of the application, further comprising:
the compensation module is used for collecting parameter signals of each blade of the fan;
the compensation module is further used for calculating the wind speed at each blade corresponding position based on the parameter signals, wherein when the wind speed at each blade corresponding position is calculated, calculation is performed based on a wind model and a blade angle compensator, the wind model is used for constructing a simulation model corresponding to the pitch motor, the blade angle compensator is used for receiving the parameter signals and corresponding simulation parameter signals generated by the wind model, calculating error signals between the parameter signals and the simulation parameter signals, and the blade angle compensator is used for adjusting the wind model based on the error signals
The compensation module is also used for determining a characteristic index based on the wind speed at the corresponding position of each blade and calculating a blade angle compensation value of each blade according to the characteristic index;
the compensation module is also used for carrying out compensation adjustment on the blade angle of each blade according to the calculated blade angle compensation value.
In some embodiments of the application, the compensation module is specifically configured to:
the compensation module is used for calculating a blade angle compensation value of the blade according to the following formula:
wherein w is a blade angle compensation value of the blade, αi is a wind speed at a position corresponding to the ith blade, βi is a wind speed determination characteristic index at the position corresponding to the ith blade, a1 is a first target blade angle value, and a2 is a second target blade angle value.
In the description of the above embodiments, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
Although the application has been described hereinabove with reference to embodiments, various modifications thereof may be made and equivalents may be substituted for elements thereof without departing from the scope of the application. In particular, the features of the disclosed embodiments may be combined with each other in any manner as long as there is no structural conflict, and the entire description of these combinations is not made in the present specification merely for the sake of omitting the descriptions and saving resources. Therefore, it is intended that the application not be limited to the particular embodiment disclosed, but that the application will include all embodiments falling within the scope of the appended claims.
Those of ordinary skill in the art will appreciate that: the above is only a preferred embodiment of the present application, and the present application is not limited thereto, but it is to be understood that the present application is described in detail with reference to the foregoing embodiments, and modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. The method for controlling the blade angle of the ultra-high flexible wind power tower is characterized by comprising the following steps:
acquiring the real-time rotating speed of the fan, and sending the real-time rotating speed to a controller so that the controller receives the real-time rotating speed;
collecting real-time voltage and real-time current of a variable-pitch motor, determining the motor rotating speed of the variable-pitch motor according to the real-time voltage and the real-time current, and controlling the blade angle of the fan for the first time according to the motor rotating speed of the variable-pitch motor;
after the first control is finished, a first target blade angle value of the fan is obtained;
and determining the second motor rotating speed of the variable-pitch motor according to the first target blade angle value, and controlling the blade angle of the fan again according to the second motor rotating speed of the variable-pitch motor.
2. The ultra-high flexible wind power tower blade angle control method according to claim 1, wherein when determining the motor rotation speed of the pitch motor according to the real-time voltage and the real-time current and performing the first control on the blade angle of the fan according to the motor rotation speed of the pitch motor, the method comprises:
collecting control current, control voltage and motor rotation speed corresponding to the variable pitch motor under different loads;
establishing a first association relation of the control current, the control voltage and the motor rotating speed of the variable pitch motor according to the data fitting of the control current, the control voltage and the motor rotating speed;
determining and obtaining the motor rotating speed of the variable pitch motor based on the real-time voltage, the real-time current and the first association relation;
determining and obtaining a first control blade angle value of the fan according to a preset mode according to the motor rotating speed of the variable-pitch motor;
and controlling the blade angle of the fan for the first time based on the first time control blade angle value.
3. The ultra-high flexible wind power tower blade angle control method according to claim 2, wherein when determining the second motor rotation speed of the variable pitch motor according to the first target blade angle value of the fan and controlling the blade angle of the fan again according to the second motor rotation speed of the variable pitch motor, comprising:
according to the corresponding paddle angle in the historical empirical data and the data fitting of the motor rotating speed, establishing a second association relation between the paddle angle and the motor rotating speed;
determining a second engine speed according to the first target blade angle value and a preset simulation condition through the second association relation; the second association relation is a relation function related to blade angle, simulation condition and motor rotating speed;
and sending the second engine rotating speed to the controller so that the controller drives the variable pitch motor to control the blade angle of the fan again according to the second engine rotating speed.
4. The ultra-high flexible wind power tower blade angle control method according to claim 3, further comprising, after controlling the blade angle of the wind turbine again according to the second motor rotation speed of the pitch motor:
collecting parameter signals of each blade of the fan;
calculating a wind speed at a position corresponding to each blade based on the parameter signals, wherein when calculating the wind speed at the position corresponding to each blade, calculation is performed based on a wind model and a blade angle compensator, the wind model is used for constructing a simulation model corresponding to the pitch motor, the blade angle compensator is used for receiving the parameter signals and corresponding simulation parameter signals generated by the wind model, calculating error signals between the parameter signals and the simulation parameter signals, and the blade angle compensator is used for adjusting the wind model based on the error signals;
determining a characteristic index based on the wind speed at the corresponding position of each blade, and calculating a blade angle compensation value of each blade according to the characteristic index;
and compensating and adjusting the blade angle of each blade according to the calculated blade angle compensation value.
5. The ultra-high flexible wind power tower blade angle control method according to claim 4, wherein when determining a characteristic index based on a wind speed at a corresponding position of each blade and calculating a blade angle compensation value of each blade from the characteristic index, comprising:
calculating a blade angle compensation value of the blade according to the following formula:
wherein w is a blade angle compensation value of the blade, αi is a wind speed at a position corresponding to the ith blade, βi is a wind speed determination characteristic index at the position corresponding to the ith blade, a1 is a first target blade angle value, and a2 is a second target blade angle value.
6. An ultra-high flexibility wind power tower blade angle control system, the system comprising:
the rotating speed receiving module is used for acquiring the real-time rotating speed of the fan and sending the real-time rotating speed to the controller so that the controller receives the real-time rotating speed;
the first control module is used for collecting real-time voltage and real-time current of the variable-pitch motor, determining the motor rotating speed of the variable-pitch motor according to the real-time voltage and the real-time current, and carrying out first control on the blade angle of the fan according to the motor rotating speed of the variable-pitch motor;
the numerical value acquisition module is used for acquiring a first target blade angle numerical value of the fan after the first control is finished;
and the secondary control module is used for determining the second motor rotating speed of the variable-pitch motor according to the first target blade angle value and controlling the blade angle of the fan again according to the second motor rotating speed of the variable-pitch motor.
7. The ultra-high flexible wind turbine tower blade angle control system of claim 6, wherein the first control module is specifically configured to:
the first control module is used for collecting control current, control voltage and motor rotating speed corresponding to the variable pitch motor under different loads;
the first control module is used for building a first association relation of the control current, the control voltage and the motor rotating speed of the variable pitch motor according to data fitting of the control current, the control voltage and the motor rotating speed;
the first control module is used for determining and obtaining the motor rotating speed of the variable pitch motor based on the real-time voltage, the real-time current and the first association relation;
the first control module is used for determining and obtaining a first control blade angle value of the fan according to a preset mode according to the motor rotating speed of the variable-pitch motor;
the first control module is used for carrying out first control on the blade angle of the fan based on the first control blade angle value.
8. The ultra-high flexible wind turbine tower blade angle control system of claim 7, wherein the re-control module is specifically configured to:
the secondary control module is used for building a second association relation about the blade angle and the motor rotating speed according to data fitting of the corresponding blade angle and the motor rotating speed in the historical empirical data;
the secondary control module is used for determining and obtaining a second engine speed according to the first target blade angle value and a preset simulation condition through the second association relation; the second association relation is a relation function related to blade angle, simulation condition and motor rotating speed;
and the secondary control module is used for sending the second engine rotating speed to the controller so that the controller drives the variable pitch motor to control the blade angle of the fan again according to the second engine rotating speed.
9. The ultra-high flexibility wind turbine tower blade angle control system of claim 8, further comprising:
the compensation module is used for collecting parameter signals of each blade of the fan;
the compensation module is further used for calculating the wind speed at the corresponding position of each blade based on the parameter signals, wherein when the wind speed at the corresponding position of each blade is calculated, calculation is performed based on a wind model and a blade angle compensator, the wind model is used for constructing a simulation model corresponding to the pitch motor, the blade angle compensator is used for receiving the parameter signals and corresponding simulation parameter signals generated by the wind model, calculating error signals between the parameter signals and the simulation parameter signals, and the blade angle compensator is used for adjusting the wind model based on the error signals;
the compensation module is also used for determining a characteristic index based on the wind speed at the corresponding position of each blade and calculating a blade angle compensation value of each blade according to the characteristic index;
the compensation module is also used for carrying out compensation adjustment on the blade angle of each blade according to the calculated blade angle compensation value.
10. The ultra-high flexibility wind turbine tower blade angle control system of claim 9, wherein the compensation module is specifically configured to:
the compensation module is used for calculating a blade angle compensation value of the blade according to the following formula:
wherein w is a blade angle compensation value of the blade, αi is a wind speed at a position corresponding to the ith blade, βi is a wind speed determination characteristic index at the position corresponding to the ith blade, a1 is a first target blade angle number, and a2 is a second target blade angle number.
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| CN117906897A (en) * | 2024-03-18 | 2024-04-19 | 西安羚控电子科技有限公司 | Simulated wind load control method and system of wing folding driving device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117906897A (en) * | 2024-03-18 | 2024-04-19 | 西安羚控电子科技有限公司 | Simulated wind load control method and system of wing folding driving device |
| CN117906897B (en) * | 2024-03-18 | 2024-06-11 | 西安羚控电子科技有限公司 | Simulated wind load control method and system of wing folding driving device |
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