CN214998015U - Variable pitch control system and wind generating set - Google Patents
Variable pitch control system and wind generating set Download PDFInfo
- Publication number
- CN214998015U CN214998015U CN202120560960.9U CN202120560960U CN214998015U CN 214998015 U CN214998015 U CN 214998015U CN 202120560960 U CN202120560960 U CN 202120560960U CN 214998015 U CN214998015 U CN 214998015U
- Authority
- CN
- China
- Prior art keywords
- control
- pitch
- circuit
- motor
- control circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- Wind Motors (AREA)
Abstract
The application discloses a variable pitch control system and a wind generating set, wherein the system comprises control subsystems corresponding to blades, a fan controller and a redundant circuit, and each control subsystem comprises a variable pitch position sensor, a driving control circuit connected with the variable pitch position sensor in each control subsystem and a motor; the redundant circuit is connected with the drive control circuit and the motor in each control subsystem and used for forming a redundant power supply circuit corresponding to the fault drive control circuit and supplying power to the motor corresponding to the fault drive control circuit when the fault drive control circuit exists so as to enable the motor to drive the blades to feather. According to the technical scheme, the redundant power supply circuit corresponding to the fault driving control circuit is formed through connection of the driving control circuit and the redundant circuit, and the redundant power supply circuit supplies power to the motor corresponding to the fault driving control circuit to enable the motor to drive the corresponding paddle to be feathered, so that reliability of paddle feathering is improved, and overspeed runaway of the fan is prevented.
Description
Technical Field
The application relates to the technical field of wind power generation, in particular to a variable pitch control system and a wind generating set.
Background
Under normal conditions, the rotating speed of the fan is controlled by the controller, and the angle of the paddle is adjusted in real time so that the rotating speed is close to the rated rotating speed as much as possible.
When the rotating speed exceeds the rated rotating speed, the control system makes protective measures according to the degree that the actual rotating speed exceeds the rated rotating speed, and the two-stage protection of software overspeed protection and hardware overspeed protection is carried out through the first stage and the second stage which are arranged when the rotating speed exceeds the rated rotating speed. However, since the control system corresponding to each blade is an independent system, if at least one of a failure of a pitch relay, a too low voltage of a pitch battery, and a failure of a pitch controller occurs in the system, that is, if the drive control fails, the motor cannot control the corresponding blade to feather, thereby causing overspeed runaway of the wind turbine generator system.
In summary, how to improve the reliability of the feathering of the blades to prevent the overspeed runaway of the fan is a technical problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the present application provides a pitch control system and a wind turbine generator system, which are used to improve the reliability of feathering of blades so as to prevent overspeed runaway of a wind turbine.
In order to achieve the above purpose, the present application provides the following technical solutions:
a variable pitch control system comprises a control subsystem corresponding to a blade, a fan controller and a redundant circuit connected with the fan controller, wherein:
each control subsystem comprises a variable pitch position sensor for acquiring the position information of the blade, a drive control circuit connected with the fan controller and the variable pitch position sensor in each control subsystem, and a motor connected with the drive control circuit and used for driving the corresponding blade to feather under the control of the drive control circuit;
the redundant circuit is connected with the drive control circuit and the motor in each control subsystem and used for forming a redundant power supply circuit corresponding to the fault drive control circuit and supplying power to the motor corresponding to the fault drive control circuit when the fault drive control circuit exists so as to enable the motor to drive the corresponding blade to feather.
Preferably, the driving control circuit includes a pitch controller, a first control switch for receiving control of the corresponding pitch controller, and a battery connected to the motor through the first control switch, wherein the pitch controller is connected to a pitch position sensor in each of the control subsystems.
Preferably, the redundant circuit includes a second control switch connected to the batteries in each control subsystem in a one-to-one correspondence manner, and a third control switch connected to the motors in each control subsystem in a one-to-one correspondence manner, and both the second control switch and the third control switch are connected to a bus.
Preferably, the first control switch, the second control switch and the third control switch are all relays.
Preferably, the pitch controller is a pitch PLC.
Preferably, the pitch position sensor is an angle sensor for acquiring the angle of the blade.
Preferably, the fan controller is a fan PLC.
A wind park comprising a pitch control system as claimed in any preceding claim.
The application provides a become oar control system and wind generating set, wherein, should become oar control system including the control subsystem, fan controller that correspond with the paddle, the redundant circuit who links to each other with fan controller, wherein: each control subsystem comprises a variable pitch position sensor for acquiring the position information of the blades, a drive control circuit connected with the fan controller and the variable pitch position sensor in each control subsystem, and a motor connected with the drive control circuit and used for driving the corresponding blades to feather under the control of the drive control circuit; the redundant circuit is connected with the drive control circuit and the motor in each control subsystem and used for forming a redundant power supply circuit corresponding to the fault drive control circuit and supplying power to the motor corresponding to the fault drive control circuit when the fault drive control circuit exists so as to enable the motor to drive the corresponding blade to feather.
According to the technical scheme disclosed by the application, the drive control circuit in each control subsystem is not only connected with the pitch position sensor of the control subsystem where the drive control circuit is located, but also connected with the pitch position sensors of the rest control subsystems to realize the redundant backup of the drive control circuit, and the redundant circuits connected with the fan controller, the drive control circuits in each control subsystem and the motor are arranged in the pitch control system to receive the control of the fan controller and/or the drive control circuit, when the fault drive control circuit exists, the redundant power supply circuit corresponding to the fault drive control circuit can be correspondingly formed through the redundant backup and the redundant circuits of the drive control circuit, and the redundant power supply circuit corresponding to the fault drive control circuit supplies power to the motor corresponding to the fault drive control circuit, so that the motor can drive the corresponding blade to feathering, therefore, the condition that the corresponding paddle cannot be feathered due to the failure of the drive control circuit is avoided, the feathering reliability of the paddle is improved, and the overspeed runaway of the fan is prevented.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a prior art pitch control system;
FIG. 2 is a schematic structural diagram of a pitch control system according to an embodiment of the present disclosure;
FIG. 3 is a schematic structural diagram of another pitch control system provided in an embodiment of the present application;
FIG. 4 is a schematic structural diagram of another pitch control system provided in an embodiment of the present application.
Detailed Description
Under normal conditions, the rotating speed of the fan is controlled by the controller, and the angle of the paddle is adjusted in real time so that the rotating speed is close to the rated rotating speed as much as possible.
When the rotating speed exceeds the rated rotating speed, the control system can make protective measures according to the degree that the actual rotating speed exceeds the rated rotating speed. Generally, two poles are provided above the rated speed, including: the first level is software overspeed protection, namely when the controller acquires that the speed is higher than the highest speed set by the controller, the controller instructs the fan to stop and instructs the pitch control system to receive the propeller, and the second level is hardware overspeed protection, namely when the software overspeed is reached, the pitch control and the pitch control are not controlled, so that the rotating speed is increased to reach the rotating speed limited by the overspeed monitor in the first step, and then the safety chain is disconnected to try again to instruct the pitch control and the pitch control through a hard wire. Through the overspeed protection of the second-level hardware, the overspeed runaway risk of the fan can be greatly reduced. However, one or more blades still cannot feather under the condition of triggering the first-stage and second-stage overspeed protection, specifically, as shown in fig. 1, a schematic structural diagram of the existing pitch control system is shown, which corresponds to an example in which the wind turbine generator includes 3 blades, the pitch control system includes 3 sets of pitch controllers, 3 pitch motors, and 3 sets of pitch batteries to form 3 sets of independent control systems, each control system controls one blade, and under the condition of triggering the first-stage and second-stage overspeed protection, if at least one of a fault occurs in a pitch relay in the control system, a too low voltage in the pitch battery, and a fault in the pitch controller occurs, the control system corresponding to the blade cannot control the corresponding blade to feather, so that overspeed runaway of the wind turbine generator set occurs.
Therefore, the variable pitch control system can improve the feathering reliability of the blades so as to prevent overspeed runaway of the fan.
In order to make the technical solutions more clearly understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 2, which shows a schematic structural diagram of a pitch control system provided in an embodiment of the present application, the pitch control system provided in an embodiment of the present application may include a control subsystem 1 corresponding to a blade, a fan controller 2, and a redundant circuit 3 connected to the fan controller 2, where:
each control subsystem 1 can comprise a variable pitch position sensor 11 for acquiring position information of the blades, a drive control circuit 12 connected with the fan controller 2 and the variable pitch position sensor 11 in each control subsystem 1, and a motor 13 connected with the drive control circuit 12 and used for driving the corresponding blades to feather under the control of the drive control circuit 12;
the redundant circuit 3 is connected with the drive control circuit 12 and the motor 13 in each control subsystem 1, and is used for forming a redundant power supply circuit corresponding to the faulty drive control circuit and supplying power to the motor 13 corresponding to the faulty drive control circuit when the faulty drive control circuit exists, so that the motor 13 drives the corresponding blade to feather.
The variable pitch control system provided by the embodiment of the application can comprise a plurality of sets of control subsystems 1, a fan controller 2 and a redundant circuit 3, wherein the number of the sets of control subsystems 1 is the same as the number of blades in a wind turbine generator, each set of control subsystem 1 corresponds to one blade to control the blades in a feathering mode, and the fan controller 2 is connected with each control subsystem 1 and the redundant circuit 3 and is used for controlling the control subsystems 1 and the redundant circuit 3 to achieve feathering of the corresponding blades.
Each control subsystem 1 comprises a variable pitch position sensor 11, a driving control circuit 12 and a motor 13, wherein the variable pitch position sensor 11 is used for acquiring position information of a blade corresponding to the control subsystem 1; the driving control circuit 12 in each control subsystem 1 is not only connected with the pitch position sensor 11 in the control subsystem 1 where the driving control circuit 12 is located, but also connected with the pitch position sensor 11 in other control subsystems 1, that is, the driving control circuit 12 in each control subsystem 1 is connected with the pitch position sensor 11 in each control subsystem 1, and is used for acquiring the position information of the corresponding blade acquired by the pitch position sensor 11 in each control subsystem 1, so that each driving control circuit 12 can acquire the position information and the feathering condition of each blade, and the driving control circuit 12 can send the acquired position information of each blade to the fan controller 2, so that the fan controller 2 can acquire the position information and the feathering condition of all the blades through any one driving control circuit 12, and the problem that the pitch control system cannot timely due to the fault of one driving control circuit 12 under the condition of triggering the secondary overspeed protection is avoided The situation that the blades are not feathered is known, namely, the remaining drive control circuits 12 and the fan controller 2 can find the blades which are not feathered in time according to the position information of each blade, and the feathering control is carried out on the blades corresponding to the failed drive control circuit by means of the redundant circuit 3; the motor 13 is connected with the driving control circuit 12 in the control system where the motor is located, and is used for controlling and driving the corresponding blade to feather under the condition that the driving control circuit 12 connected with the motor is normal.
The redundant circuit 3 is connected to the drive control circuit 12 and the motor 13 in each control subsystem 1, and is configured to, when a faulty drive control circuit exists (specifically, determined according to position information of a blade, and if the blade is not feathered under the condition that the secondary overspeed protection is triggered, consider the drive control circuit corresponding to the blade as a faulty drive control circuit), form a redundant power supply circuit corresponding to the faulty drive control circuit under the control of the fan controller 2 or the corresponding drive control circuit 12, and supply power to the motor 13 connected to the faulty drive control circuit through the redundant power supply circuit, so that the motor 13 can be powered to drive the corresponding blade to feather. Specifically, referring to fig. 2, it should be noted that fig. 2 is described by taking 3 sets of control subsystems, that is, a pitch control system includes a control subsystem a, a control subsystem B, and a control subsystem C, as an example, when a drive control circuit a in the control subsystem a fails, the fan controller 2 controls the redundant circuit 3 to form a redundant power supply circuit connected to a motor a in the control subsystem a and supply power to the motor a in the control subsystem a, so as to feather a blade corresponding to the control subsystem a, and when a drive control circuit 12 in each of the remaining sets of control subsystems 1 fails, the logic for the fan controller 2 to control the redundant circuit 3 is similar to that described above, and is not described herein again.
It should be noted that, if the communication between the fan controller 2 and each of the driving control circuits 12 is not abnormal, the fan controller 2 receives the position information of the blade sent by each of the driving control circuits 12, and controls the driving control circuits 12 and the redundant circuit 3 according to the position information to complete the feathering of the blade, specifically, if no failed driving control circuit is present, the fan controller 2 controls the corresponding driving control circuit 12 and the redundant circuit 3 (the redundant circuit 3 is not controlled to form a redundant power supply circuit), so that the driving control circuit 12 controls the corresponding motor 13 to feather the blade, if a failed driving control circuit is present, the fan controller 2 controls the normal driving control circuit, so that while the driving control circuits control the blade to feathering, the redundant circuit 3 is also controlled to form a redundant power supply circuit corresponding to the failure drive control circuit; if the communication between the fan controller 2 and each drive control circuit 12 is abnormal, the corresponding drive control circuit 12 directly controls the motor 13 when the drive control circuit with the fault does not occur so as to cause the corresponding blade to feather, and the drive control circuit 12 capable of normally sending out a control instruction when the drive control circuit with the fault occurs controls the redundant circuit 3 so as to form a redundant power supply circuit corresponding to the drive control circuit with the fault. Of course, when there is no abnormality in the communication between the fan controller 2 and each of the drive control circuits 12, the fan controller 2 may control the redundant circuit 3 by cyclically designating the drive control circuit 12 so that the redundant circuit 3 forms a redundant power supply circuit corresponding to the failed drive control circuit.
In addition, after the control, if the paddle which is not feathered is detected to exist through the position information of the paddle, the motor 13 corresponding to the paddle is in failure, at the moment, the fan controller 2 can actively yaw at 90 degrees with the opposite wind angle to reduce the windward side of the fan, so that the purpose of reducing the rotating speed is achieved, the high-speed brake caliper is started when the rotating speed of the paddle which is not feathered is lower than the maximum opening value of the high-speed brake caliper to carry out continuous brake, namely, the main shaft is locked to stop the power generation of the wind turbine generator, so that the overspeed runaway of the wind turbine generator is avoided, the safety is ensured, the safety accident is avoided, and the alarm can be given while the high-speed brake caliper is started by the fan controller 2, so that related personnel can obtain prompt in time according to the alarm and take corresponding measures to deal with the situation, thereby further ensuring safety.
Through the process, when the drive control circuit 12 in the control subsystem 1 breaks down, the power supply of the corresponding motor 13 can be realized through the redundant circuit 3, so that the motor 13 can drive the paddle to feather, the feathering reliability of the paddle can be improved, and the overspeed runaway of the fan is prevented.
According to the technical scheme disclosed by the application, the drive control circuit in each control subsystem is not only connected with the pitch position sensor of the control subsystem where the drive control circuit is located, but also connected with the pitch position sensors of the rest control subsystems to realize the redundant backup of the drive control circuit, and the redundant circuits connected with the fan controller, the drive control circuits in each control subsystem and the motor are arranged in the pitch control system to receive the control of the fan controller and/or the drive control circuit, when the fault drive control circuit exists, the redundant power supply circuit corresponding to the fault drive control circuit can be correspondingly formed through the redundant backup and the redundant circuits of the drive control circuit, and the redundant power supply circuit corresponding to the fault drive control circuit supplies power to the motor corresponding to the fault drive control circuit, so that the motor can drive the corresponding blade to feathering, therefore, the condition that the corresponding paddle cannot be feathered due to the failure of the drive control circuit is avoided, the feathering reliability of the paddle is improved, and the overspeed runaway of the fan is prevented.
Referring to FIG. 3, a schematic structural diagram of another pitch control system provided by the embodiments of the present application is shown. In the pitch control system provided in the embodiment of the present application, the driving control circuit 12 may include a pitch controller, a first control switch for receiving control of the corresponding pitch controller, and a battery connected to the motor 13 through the first control switch, where the pitch controller is connected to the pitch position sensor 11 in each control subsystem 1.
In the present application, the drive control circuit 12 in the control subsystem 1 may comprise a pitch controller, a first control switch, a battery, wherein, the first control switch is used for receiving the control of a pitch controller in the same control subsystem 1 with the first control switch, the battery is connected with the motor 13 in the control subsystem 1 through the first control switch and is used for supplying power to the motor 13 after the first control switch is closed, the pitch controller is connected with the pitch position sensor 11 in each control subsystem 1 and is also connected with the fan controller 2, used for acquiring the position information collected by the variable pitch position sensor 11 in each control subsystem 1 and sending the position information to the fan controller 2, so that the fan controller 2 and any variable pitch controller can obtain the position information of the blades, and the non-feathering blades can be conveniently found in time.
In the pitch control system provided in the embodiment of the present application, the redundant circuit 3 may include a second control switch connected to the batteries in each control subsystem 1 in a one-to-one correspondence manner, and a third control switch connected to the motors 13 in each control subsystem 1 in a one-to-one correspondence manner, and both the second control switch and the third control switch are connected to the bus.
In this application, the redundant circuit 3 may include a plurality of second control switches, a plurality of third control switches, and a bus, where the number of the second control switches and the number of the third control switches are equal to the number of the control subsystems 1, the second control switches are connected to the batteries in the control subsystems 1 in a one-to-one correspondence, the third control switches are connected to the motors 13 in the control subsystems 1 in a one-to-one correspondence, and the second control switches and the third control switches are connected to the bus.
On the basis, taking the driving control circuit a in the control subsystem a as an example, if the variable pitch controller a in the driving control circuit a has a fault, under the condition that the fan controller 2 and the driving control circuit 12 (specifically, the variable pitch controller in the driving control circuit 12) normally communicate with each other, the fan controller 2 controls the second control switch d and the third control switch g in the redundant circuit 3 to be closed, so as to form a redundant power supply circuit of a battery a, a second control switch d-bus and a third control switch g, and supply power to the motor a, so that the blade corresponding to the control subsystem a can be feathered, and under the condition that the fan controller 2 and the driving control circuit 12 do not normally communicate with each other, because the variable pitch controller b and the variable pitch controller c can both obtain the position information of the blade corresponding to the control subsystem a, therefore, the second control switch d and the third control switch g in the redundant circuit 3 can be controlled to be closed by any one of the pitch controller b and the pitch controller c to form a redundant power supply circuit of a battery a, a second control switch d, a bus and the third control switch g, and the redundant power supply circuit supplies power to the motor a, so that the blades corresponding to the control subsystem A can be feathered; if a first control switch a in the drive control circuit a has a fault, under the condition that the fan controller 2 and the drive control circuit 12 are in normal communication, the fan controller 2 controls a second control switch d and a third control switch g in the redundant circuit 3 to be closed to form a redundant power supply circuit of a battery a, a second control switch d-bus and a third control switch g, and supplies power to a motor a, so that blades corresponding to the control subsystem A can be feathered, under the condition that the fan controller 2 and the drive control circuit 12 are not in normal communication, any one of a pitch controller b and a pitch controller c can control the second control switch d and the third control switch g in the redundant circuit 3 to be closed to form a redundant power supply circuit of the battery a, the second control switch d-bus and the third control switch g, the motor a is powered, so that the paddle corresponding to the control subsystem A can be feathered; if the voltage supplied by the battery a in the drive control circuit a is too low, under the condition of normal communication between the fan controller 2 and the drive control circuit 12, the fan controller 2 controls the second control switch e and the third control switch g in the redundant circuit 3 to be closed to form a redundant power supply circuit of the battery b, the second control switch e, the bus and the third control switch g, or controls the second control switch f and the third control switch g to be closed to form a redundant power supply circuit of the battery c, the second control switch f, the bus and the third control switch g, so as to supply power to the motor a, so that the blade corresponding to the control subsystem a can be feathered, and under the condition of abnormal communication between the fan controller 2 and the drive control circuit 12, either the pitch controller b or the pitch controller c can control the second control switch e, the pitch controller c in the redundant circuit 3, And the third control switch g is closed to form a redundant power supply circuit of the battery b, the second control switch e, the bus and the third control switch g, or the second control switch f and the third control switch g are controlled to be closed to form a redundant power supply circuit of the battery c, the second control switch f, the bus and the third control switch g, so as to supply power to the motor a, and therefore the paddle corresponding to the control subsystem A can be feathered.
It should be noted that, for the situation that the redundant circuit 3 forms a redundant power supply circuit when the pitch controller, the first control switch and the battery in the driving control circuit 12 in the control subsystem B and the control subsystem C in fig. 3 have corresponding failures, it is similar to the above, and details are not repeated herein.
According to the process, the second control switch and the third control switch in the redundant circuit 3 can form a corresponding redundant power supply circuit under the control of the fan controller 2 or the variable pitch controller to supply power to the motor 13 corresponding to the fault driving control circuit, so that the motor 13 can drive the blades to feather, and overspeed runaway of the wind turbine generator is prevented.
Specifically, reference may be made to fig. 4, which shows a schematic structural diagram of another pitch control system provided in the embodiment of the present application. According to the pitch control system provided by the embodiment of the application, the first control switch, the second control switch and the third control switch are all relays.
In the present application, the first control switch, the second control switch, and the third control switch may all be relays, and of course, other types of control switches may also be used as the first control switch, the second control switch, and the third control switch, which is not limited in this application.
According to the pitch control system provided by the embodiment of the application, the pitch controller is a pitch PLC.
In the present application, the pitch Controller included in the driving control circuit 12 may be specifically a pitch PLC (Programmable Logic Controller), which has the characteristics of high reliability, easy programming, and the like.
According to the pitch control system provided by the embodiment of the application, the pitch position sensor 11 is an angle sensor used for collecting the angle of the blade.
In this application, become oar position sensor 11 specifically can be for the angle sensor who is used for gathering the paddle angle to fan controller 2 and become oar controller can realize feathering control to the paddle according to the paddle angle, of course, also can adopt speed sensor to regard as becoming oar position sensor 11.
According to the pitch control system provided by the embodiment of the application, the fan controller 2 is a fan PLC.
In this application, fan controller 2 specifically can be fan PLC, and it has characteristics such as the reliability is high, the programming is easy.
The embodiment of the application also provides a wind generating set which can comprise any one of the pitch control systems.
The embodiment of the application also provides a wind generating set, which comprises any one of the pitch control systems, and as any one of the pitch controllers can improve the feathering reliability of the blades, when the pitch controller is applied to the wind generating set, overspeed runaway of the wind generating set can be effectively avoided, and thus the running safety and reliability of the wind generating set are improved.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include elements inherent in the list. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. In addition, parts of the above technical solutions provided in the embodiments of the present application, which are consistent with the implementation principles of corresponding technical solutions in the prior art, are not described in detail so as to avoid redundant description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A variable pitch control system is characterized by comprising a control subsystem corresponding to a blade, a fan controller and a redundant circuit connected with the fan controller, wherein:
each control subsystem comprises a variable pitch position sensor for acquiring the position information of the blade, a drive control circuit connected with the fan controller and the variable pitch position sensor in each control subsystem, and a motor connected with the drive control circuit and used for driving the corresponding blade to feather under the control of the drive control circuit;
the redundant circuit is connected with the drive control circuit and the motor in each control subsystem and used for forming a redundant power supply circuit corresponding to the fault drive control circuit and supplying power to the motor corresponding to the fault drive control circuit when the fault drive control circuit exists so as to enable the motor to drive the corresponding blade to feather.
2. The pitch control system of claim 1 wherein the drive control circuitry comprises a pitch controller, a first control switch for receiving control of the corresponding pitch controller, and a battery connected to the motor via the first control switch, wherein the pitch controller is connected to a pitch position sensor in each of the control subsystems.
3. The pitch control system of claim 2 wherein the redundant circuit comprises a second control switch connected in one-to-one correspondence with a battery in each of the control subsystems and a third control switch connected in one-to-one correspondence with a motor in each of the control subsystems, the second control switch and the third control switch both connected to a bus.
4. The pitch control system of claim 3, wherein said first control switch, said second control switch, and said third control switch are all relays.
5. The pitch control system of claim 2 wherein said pitch controller is a pitch PLC.
6. The pitch control system of claim 1 wherein the pitch position sensor is an angle sensor for acquiring the blade angle.
7. The pitch control system of claim 1 wherein the fan controller is a fan PLC.
8. A wind park according to any of claims 1-7, comprising a pitch control system according to any of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120560960.9U CN214998015U (en) | 2021-03-18 | 2021-03-18 | Variable pitch control system and wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120560960.9U CN214998015U (en) | 2021-03-18 | 2021-03-18 | Variable pitch control system and wind generating set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214998015U true CN214998015U (en) | 2021-12-03 |
Family
ID=79157447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120560960.9U Active CN214998015U (en) | 2021-03-18 | 2021-03-18 | Variable pitch control system and wind generating set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214998015U (en) |
-
2021
- 2021-03-18 CN CN202120560960.9U patent/CN214998015U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3462017B1 (en) | Contingency autonomous yaw control for a wind turbine | |
| CN101624969B (en) | Redundancy control system and redundancy control method for wind power generation propeller change | |
| JP2008527226A (en) | Wind turbine having multiplexed redundant control system and method for controlling wind turbine | |
| CN103089541B (en) | Wind generating set safety chain control system | |
| US8157523B2 (en) | Method for the operation of a wind energy plant | |
| CN209523844U (en) | Variable blade control system and wind power generating set | |
| CN103225586B (en) | Anti-runaway safety control method for wind generating set | |
| CN102418662B (en) | Safety operation control system of wind driven generator | |
| CN203161440U (en) | Emergency feathering redundancy control device for variable pitch system of wind generating set | |
| CN106224161A (en) | Independent pitch system and change oar method with controller strategy | |
| CN111794911B (en) | Yaw starting control method for wind generating set | |
| CN104329221B (en) | Paddle retracting method of variable-pitch system | |
| CN111963375B (en) | Paddle control method and wind turbine generator system thereof | |
| CN114856910A (en) | Multi-drive variable pitch system and fan | |
| CN112855444A (en) | Variable pitch control system and wind generating set | |
| CN102459886A (en) | Blade angle adjustment drive for a wind power plant | |
| CN111561421A (en) | System and method for protecting a wind turbine from flutter during high wind speeds | |
| CN214998015U (en) | Variable pitch control system and wind generating set | |
| CN111878310A (en) | Feathering control device, hardware safety chain, system and wind generating set thereof | |
| CN107701372A (en) | A kind of wind power generating set self-protection control method become under oar Actuators Failures | |
| CN108518306B (en) | Anti-runaway control system, method and device for wind generating set | |
| CN213711229U (en) | Direct-current variable-pitch flexible pitch collecting system of wind generating set | |
| EP2691648B1 (en) | Redundant power supply architecture | |
| CN212392712U (en) | Power supply system of variable pitch controller of wind turbine generator | |
| CN107620670A (en) | A kind of anti-hypervelocity Yaw control method of Wind turbines |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |