CN108223267B - Variable pitch transmission equipment and control method - Google Patents
Variable pitch transmission equipment and control method Download PDFInfo
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- CN108223267B CN108223267B CN201611151940.6A CN201611151940A CN108223267B CN 108223267 B CN108223267 B CN 108223267B CN 201611151940 A CN201611151940 A CN 201611151940A CN 108223267 B CN108223267 B CN 108223267B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 94
- 238000000034 method Methods 0.000 title claims abstract description 40
- 230000005611 electricity Effects 0.000 claims description 13
- 238000012544 monitoring process Methods 0.000 claims description 11
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- 230000001174 ascending effect Effects 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 3
- 230000004888 barrier function Effects 0.000 claims 1
- 238000010248 power generation Methods 0.000 abstract description 3
- 239000011295 pitch Substances 0.000 description 175
- 238000010586 diagram Methods 0.000 description 9
- 230000009471 action Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/40—Transmission of power
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/328—Blade pitch angle
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- 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
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a variable pitch transmission device and a control method, which relate to the field of wind power generation, and the variable pitch transmission device comprises: a plurality of motors and a plurality of transmissions; the plurality of motors are configured in a way that each motor drives a transmission device, and the output torques of the plurality of motors are the same or the difference of the output torques is within an allowable range; the plurality of transmission devices are configured to drive the variable-pitch bearing to rotate under the driving of the plurality of motors. The variable pitch transmission equipment and the control method aim to solve the problem that the strength of the transmission device is not enough to support the transmission device in a limit load and fatigue load state for a long time.
Description
Technical field
The present invention relates to wind power generation field more particularly to a kind of pitch drive equipment and control method.
Background technique
The energy is social economy and the main matter basis of human lives, is the power of social development.However, as the world
The reserves of the non-renewable energy such as petroleum, coal, the natural gas of energy mainstay are reduced increasingly, and world's every country all exists
Develop wind-power electricity generation, wind-power electricity generation has formd mature scale as new energy.
Wind power generating set is the equipment for converting wind energy into electric energy.During wind-power electricity generation, wind drives wind-power electricity generation
The blade of unit rotates, so that wind-driven generator in wind power generating set be driven to rotate and produce electricl energy.Wind speed is bigger, wind-force hair
The revolving speed of motor is faster.In order to guarantee the stabilization of speed of wind-driven generator, need to adjust the propeller pitch angle of blade according to wind speed, i.e., into
Row variable pitch.
It at this stage, drives pitch variable bearings to rotate using single motor output power, realizes variable pitch function.Specifically,
Single motor is connected with retarder, and retarder and pitch variable bearings are connect with drive respectively, so that single motor
The power of output is transmitted on transmission device by retarder, pitch variable bearings rotation is being driven by transmission device, to realize
Variable pitch function.But as the promotion of the heating power of wind power generating set and the length of blade and weight are continuously increased,
Load required for pitch variable bearings is driven to increase, the burden of transmission device.The intensity of transmission device is not enough to support transmission
Device is chronically at ultimate load and fatigue load state, so that transmission device is easy to happen damage, so as to cause wind-power electricity generation
Unit breaks down.
Summary of the invention
The embodiment of the invention provides a kind of pitch drive equipment and control method, transmission device can be avoided because of intensity
Deficiency leads to the case where being chronically at ultimate load and fatigue load state.
In a first aspect, the embodiment of the invention provides a kind of pitch drive equipment, and for driving pitch variable bearings to rotate, the change
Paddle drive apparatus includes multiple motors and multiple transmission devices；Multiple motors are configured as wherein each motor and drive a transmission
Device, and multiple motors output torque is identical or the difference of output torque within the allowable range；Multiple transmission devices are configured
Under the drive of multiple motors, to drive pitch variable bearings rotation.
According to above-mentioned in a first aspect, the pitch drive equipment further includes the multiple drivings being arranged in a one-to-one correspondence with multiple motors
Device, multiple drivers are configured as driving multiple motors, so that the output torque of multiple motors is identical or the difference of output torque
Within the allowable range；Driver (11) is additionally configured to monitor the output torque and revolving speed of corresponding motor.
According to above-mentioned in a first aspect, a motor in multiple motors is main motor, remaining motor is from motor, main electricity
The corresponding driver of machine is connected with from the corresponding driver of motor, and the corresponding driver of main motor is configured as to from motor pair
The driver answered sends control instruction, controls the output torque from motor.
According to above-mentioned in a first aspect, above-mentioned pitch drive equipment further includes the variable pitch speed acquisition being arranged on pitch variable bearings
Device, variable pitch speed acquisition device are configured as the practical variable pitch speed of acquisition pitch variable bearings.
According to above-mentioned in a first aspect, variable pitch speed acquisition device is additionally configured to respectively pass the practical variable pitch speed of acquisition
Pass multiple drivers；Multiple drivers are additionally configured to the difference of the target variable pitch speed according to practical variable pitch speed and setting
Value controls corresponding motor adjustment output torque.
According to above-mentioned in a first aspect, variable pitch speed acquisition device is configured as the practical variable pitch speed of acquisition passing to master
The corresponding driver of motor；The corresponding driver of main motor is additionally configured to the target variable pitch according to practical variable pitch speed and setting
The difference of speed, control main motor adjusts output torque, and sends adjustment instruction to from the corresponding driver of motor；From motor
Corresponding driver is additionally configured to according to adjustment instruction, and control adjusts output torque from motor.
According to above-mentioned in a first aspect, above-mentioned pitch drive equipment further includes being arranged between motor and corresponding transmission device
Clutch, clutch be configured as control motor connect or be detached from corresponding drive.
According to it is above-mentioned in a first aspect, above-mentioned pitch drive equipment further include be arranged on pitch variable bearings embrace case device, embrace
The band-type brake instruction that case device is configured as being sent according to the corresponding driver of main motor carries out band-type brake to pitch variable bearings.
According to above-mentioned in a first aspect, above-mentioned pitch drive equipment further includes the master control list being separately connected with multiple drivers
Member, main control unit are configured as the fault message of the slave motor sent according to the corresponding driver of main motor.
According to above-mentioned in a first aspect, transmission device is toothed belt or gear.
Second aspect, the embodiment of the invention provides a kind of pitch drive control method, the variable pitch for above scheme is passed
Dynamic equipment, multiple motors drive multiple transmission devices, so that pitch variable bearings be driven to rotate, realize variable pitch function.
According to above-mentioned second aspect, above-mentioned pitch drive control method further include: corresponding by the slave motor to break down
Driver sends fault message to the corresponding driver of main motor；Failure is sent from the corresponding driver of main motor to main control unit
Information；It by main control unit according to fault message, controls pitch variable bearings and puts away the oars, and the slave motor for controlling failure is corresponding
Clutch and transmission device are detached from.
According to above-mentioned second aspect, above-mentioned pitch drive control method further include: corresponding by main control unit monitoring main motor
Driver heartbeat signal；When the heartbeat signal for monitoring the corresponding driver of main motor is abnormal, by main control unit
Control pitch variable bearings are put away the oars, and control clutch corresponding with main motor and transmission device disengaging.
According to above-mentioned second aspect, above-mentioned pitch drive control method further include: by from the corresponding drive monitors of motor
The heartbeat signal of the corresponding driver of main motor；When the heartbeat signal for monitoring the corresponding driver of main motor is abnormal,
From sending notification information from the corresponding driver of motor to main control unit；When main control unit receives notification message, by master control list
Member control pitch variable bearings are put away the oars, and control clutch corresponding with main motor and transmission device disengaging.
According to above-mentioned second aspect, above-mentioned pitch drive control method further include: correspond to the defeated of motor by drive monitors
Torque and revolving speed out；If the numerical value that the output torque of corresponding motor declines within the unit time, which is greater than preset torque, declines threshold
Value, and the numerical value that the revolving speed of corresponding motor rises within the unit time is greater than preset revolving speed ascending threshold, is stopped by driver
Work, or control clutch and the transmission device disengaging of corresponding motor；If the output torque of corresponding motor is within the unit time
The numerical value of rising is greater than preset torque ascending threshold, and the numerical value that the revolving speed of corresponding motor declines within the unit time is greater than in advance
If revolving speed falling-threshold value, stopped working by driver, or control the clutch of corresponding motor and transmission device is detached from.
The embodiment of the invention provides a kind of pitch drive equipment and control method, it is provided in pitch drive equipment multiple
Motor, and the multiple transmission devices being arranged in a one-to-one correspondence with multiple motors, multiple motors drive multiple transmission devices, thus band
Dynamic pitch variable bearings rotation, realizes variable pitch function.The output torque of multiple motors is identical or the difference of the output torque of multiple motors
Within the allowable range.The torque for enabling pitch variable bearings required when carrying out variable pitch gives multiple motors, by multiple motors point
Corresponding transmission device is not driven, torque required when carrying out variable pitch is provided for pitch variable bearings, to reduce each transmission device
Burden, avoid transmission device from being chronically at ultimate load and fatigue load state.
Detailed description of the invention
The present invention may be better understood from the description with reference to the accompanying drawing to a specific embodiment of the invention wherein,
The same or similar appended drawing reference indicates the same or similar feature.
Fig. 1 is the structural schematic diagram of the pitch drive equipment in one embodiment of the invention；
Fig. 2 is the flow chart of the pitch drive control method in one embodiment of the invention；
Fig. 3 is the structural schematic diagram of pitch drive equipment in another embodiment of the present invention；
Fig. 4 is the driving schematic diagram of pitch drive equipment in another embodiment of the present invention；
Fig. 5 is the flow chart of the pitch drive control method in another example of another embodiment of the present invention；
Fig. 6 is the flow chart of the pitch drive control method in the another example of another embodiment of the present invention；
Fig. 7 is the flow chart of the pitch drive control method in another example of another embodiment of the present invention；
Fig. 8 is the structural schematic diagram of the pitch drive equipment in further embodiment of this invention；
Fig. 9 is the flow chart of the pitch drive control method in yet another embodiment of the invention.
Wherein: 10- motor；11- transmission device；12- pitch variable bearings；13- driver；14- variable pitch speed acquisition device；
15- clutch；16- main control unit；17- band brake apparatus.
Specific embodiment
The feature and exemplary embodiment of various aspects of the invention is described more fully below.In following detailed description
In, many details are proposed, in order to provide complete understanding of the present invention.But to those skilled in the art
It will be apparent that the present invention can be implemented in the case where not needing some details in these details.Below to implementation
The description of example is used for the purpose of providing by showing example of the invention and better understanding of the invention.The present invention never limits
In any concrete configuration set forth below and algorithm, but cover under the premise of without departing from the spirit of the present invention element,
Any modification, replacement and the improvement of component and algorithm.In the the accompanying drawings and the following description, well known structure and skill is not shown
Art is unnecessary fuzzy to avoid causing the present invention.
Fig. 1 is the structural schematic diagram of the pitch drive equipment in one embodiment of the invention, as shown in Figure 1, pitch drive is set
Standby includes multiple motors 10 and multiple transmission devices 11.Wherein, multiple motors 10 are configured such that each motor 10 drives one
A transmission device 11.Multiple transmission devices 11 are configured as rotating in the drive pitch variable bearings 12 of corresponding motor 10.Wherein, multiple
The output torque of motor 10 is identical or the difference of output torque within the allowable range, to guarantee that multiple motors 10 drive multiple transmissions
Device 11 can make 12 normal rotation of pitch variable bearings.In a possible example, transmission device 11 can be toothed belt or tooth
The combination of the transmission parts such as wheel or transmission parts.Each motor 10 can pass through the outer of toothed belt or gear etc. and pitch variable bearings 12
Circle transmission connection, so that pitch variable bearings 12 be driven to rotate.If transmission device 11 is toothed belt, multiple toothed belts can be in variable pitch
Laid out in parallel on the axial direction of bearing 12.
In embodiments of the present invention, torque needed for pitch variable bearings 12 carry out variable pitch can be got from multiple motors 10
It arrives, torque needed for driving multiple transmission devices 11 to provide progress variable pitch to pitch variable bearings 12 jointly from multiple motors 10.To
So that the load of each transmission device 11 is smaller, the case where avoiding 11 load excessive of transmission device.It should be noted that
In multiple motors 10 and multiple transmission devices 11, the sum of output torque that multiple motors 10 are capable of providing is greater than or equal to pitch axis
Driving torque needed for holding 12 carry out variable pitches.
A motor 10 and a transmission device 11 corresponding with the motor 10 can be regarded as a pitch drive chain
Road.Pitch drive equipment in the embodiment of the present invention includes a plurality of pitch drive link, and a plurality of pitch drive link is relatively independent,
Therefore, when one or several pitch drive link in pitch drive equipment breaks down, other pitch drive links are simultaneously
It is not affected, can continue to work normally.Wind power generating set can use the pitch drive link not broken down and drive
Pitch variable bearings 12 carry out variable pitch, improve the operational reliability of wind power generating set.
Fig. 2 is the flow chart of the pitch drive control method in one embodiment of the invention, as shown in Fig. 2, pitch drive control
Method processed includes step 201- step 203.
In step 201, output torque is exported respectively by multiple motors 10.
Wherein, the output torque of multiple motors 10 is equal or the difference of output torque within the allowable range.
In step 202, multiple transmission devices 11 are driven by multiple motors 10.
In step 203, pitch variable bearings 12 are driven to rotate by multiple transmission devices 11.
In pitch drive device and method provided in an embodiment of the present invention, pitch drive equipment is provided with multiple motors 10,
And the multiple transmission devices 11 being arranged in a one-to-one correspondence with multiple motors 10, multiple motors 10 drive multiple transmission devices 11, from
And pitch variable bearings 12 is driven to rotate, realize variable pitch function.The output torque of multiple motors 10 is identical or multiple motors 10 it is defeated
The difference of torque is within the allowable range out.The torque for enabling pitch variable bearings 12 required when carrying out variable pitch gives multiple motors,
Corresponding transmission device is driven respectively by multiple motors 10, and torque required when carrying out variable pitch is provided for pitch variable bearings 12, thus
The burden for reducing each transmission device 11, avoids transmission device 11 from being chronically at ultimate load and fatigue load state, to keep away
The intensity for having exempted from transmission device 11 is not enough to the case where supporting transmission device 11 to be chronically at ultimate load and fatigue load state.
Fig. 3 is the structural schematic diagram of the pitch drive equipment in another embodiment of the present invention, and pitch drive shown in Fig. 3 is set
It is standby the difference from Fig. 1 is that, pitch drive equipment further includes the multiple drivers being arranged in a one-to-one correspondence with multiple motors 10
13, it can also include the variable pitch speed acquisition device 14 being arranged on pitch variable bearings 12, in each motor 10 and corresponding transmission
Clutch 15 between device 11, and the main control unit 16 being separately connected with multiple drivers 13.
Wherein, multiple drivers 13 are configured as driving multiple motors 10, so that the output torque of multiple motors 10 is identical
Or the difference of output torque is within the allowable range so that pitch variable bearings 12 carry out variable pitch needed for torque can give it is more
A motor 10.One driver 13 drives a motor 10, and a motor 10 drives a transmission device 11.Multiple drivers 13
It can work independently relatively, independent backup power source can be configured for each driver 13, specifically, backup power source can be volume
Around battery or super capacitor etc..
Clutch 15 can be configured to control motor 10 and be sequentially connected or be detached from corresponding transmission device 11.Specifically,
Clutch 15 can be friction plate clutch, magnetic particle coupling, eddy-current clutch and can act with load castellated
Clutch.
Variable pitch speed acquisition device 14 is configured as the practical variable pitch speed of acquisition pitch variable bearings 12.Variable pitch speed acquisition dress
Setting 14 can be configured to the practical variable pitch speed of acquisition being delivered separately to multiple drivers 13.Specifically, variable pitch speed acquisition
Device 14 can be the devices such as encoder.
Driver 13 can be connected with 15 signal of clutch that corresponding motor 10 is arranged, when driver 13 learns corresponding motor
10 when breaking down, and can issue and instruct to clutch 15, and control clutch 15 make motor 10 and corresponding transmission device 11
It is detached from.Alternatively, controlling clutch 15 using the main control unit 16 of wind power generating set motor 10 and corresponding transmission are filled
Set 11 disengagings, wherein main control unit 16 can be connect with each driver 13 and 15 signal of clutch.In the embodiment of the present invention,
When one or several motors 10 break down or fail, motor 10 and transmission device 11 can be detached from, avoid faulty motor
Or failure motor carries out variable pitch to pitch variable bearings 12 and causes adverse effect.
Fig. 4 is the driving schematic diagram of the pitch drive equipment in another embodiment of the present invention, as shown in figure 4, multiple drivings
Device 13 can be configured to the difference of the target variable pitch speed according to practical variable pitch speed and setting, controls corresponding motor 10 and adjusts
Output torque.For example, driver 13 obtains target torque according to practical variable pitch speed and target variable pitch speed, by target torque
Corresponding motor 10 is passed to, output torque is adjusted to target torque by each motor 10.Wherein, variable pitch speed acquisition device 14
The practical variable pitch speed of collected pitch variable bearings 12 can feed back to multiple drivers 13, form variable pitch velocity feedback closed loop.
Multiple motors 10 adjust output torque, form moment of torsion control closed loop under the control of driver 13.In order to realize moment of torsion control
Closed loop, above-mentioned driver 13 can have vector controlled and Direct Torque Control function.Moreover, because moment of torsion control closed loop changes
For rate often than very fast, bus used by communicating between driver 13 answers baud rate with higher.In the embodiment of the present invention
Driver 13 is integrated with the function of processing and storage, and pre-set target variable pitch can be stored in advance in each driver 13
Speed can adjust the output torque of corresponding motor 10 according to the target variable pitch speed of practical variable pitch speed and setting in real time, into
And stablize the variable pitch speed that pitch variable bearings 12 carry out variable pitch.
In an example of another embodiment of the present invention, a motor 10 in multiple motors 10 can be regard as main electricity
Machine, as from motor, the corresponding driver 13 of main motor is connected remaining motor 10 with from the corresponding driver 13 of motor.Than
Such as, corresponding as shown in figure 3, regarding first motor 10 as main motor, it is the driver 13 for controlling main motor, other two
For motor 10 as from motor, corresponding is two drivers 13 from motor of control.The corresponding driver 13 of main motor can be matched
It is set to from the corresponding driver 13 of motor and sends control instruction, can be configured to from the corresponding driver 13 of motor according to control
Instruction, controls the output torque from motor, and the corresponding driver 13 of main motor can integrate the function of instruction transmitting-receiving, Ke Yitong
It crosses various instructions to control from the corresponding driver 13 of motor, convenient for the control of multiple driver 13 and more motors 10.Tool
Body, the corresponding driver 13 of main motor can be communicated by bus with from the corresponding driver 13 of motor, such as main electricity
The corresponding driver 13 of machine sends control instruction to from the corresponding driver 13 of motor by bus.
It is being provided with main motor and from the scene of motor, the variable pitch speed acquisition device 14 on pitch variable bearings 12 is set
It can be configured to the practical variable pitch speed of acquisition pitch variable bearings 12, and the practical variable pitch speed of acquisition passed into main motor and is corresponded to
Driver 11, form variable pitch velocity feedback closed loop.The corresponding driver 13 of main motor is also configured to according to practical change
The difference of paddle speed and the target variable pitch speed of setting, control main motor adjust output torque, and to from the corresponding drive of motor
Dynamic device 13 sends adjustment instruction.It is also configured to be controlled according to adjustment instruction from motor tune from the corresponding driver 13 of motor
Whole output torque.The corresponding driver 13 of main motor can be integrated with the function of storage, processing, instruction transmitting-receiving.
In the example present, it is controlled by the corresponding driver 13 of main motor from the corresponding driver 13 of motor, main motor pair
The driver 13 answered can by it is various instruction control from the corresponding driver 13 of motor, simplify multiple driver 13 with
And the control mode between more motors 10.
In another example of another embodiment of the present invention, main control unit 16 can be the master control list of wind power generating set
Member, driver 11 corresponding with main motor connect.If one or several break down or fail from motor, root can be configured as
The fault message control pitch variable bearings 12 of the slave motor sent according to the corresponding driver of main motor are put away the oars, and control appearance
The corresponding clutch 15 of the slave motor of failure is detached from transmission device 11.It should be noted that being carried out in control pitch variable bearings 13
When putting away the oars, and controlling the corresponding clutch 15 of the slave motor to break down with the disengaging of transmission device 12, main control unit 16 may be used also
To adjust all kinds of parameters (such as wind power generating set load) of entire wind power generating set, so that wind power generating set can
It works normally.
Fig. 5 is the flow chart of the pitch drive control method in another example of another embodiment of the present invention, Fig. 5 and Fig. 2
The difference is that as shown in figure 5, pitch drive control method further includes step 204- step 206.
In step 204, it is sent out from the corresponding driver 13 of the slave motor to break down to the corresponding driver 13 of main motor
Send fault message.
The slave motor to break down can send fault message to from the corresponding driver 13 of motor, from the corresponding driving of motor
The fault message is sent to the corresponding driver 13 of main motor by device 13.Fault message may include the mark from motor, such as electricity
Machine number etc..
In step 205, fault message is sent from the corresponding driver 13 of main motor to main control unit 16.
In step 206, pitch variable bearings 12 are controlled and are put away the oars according to fault message by main control unit 16, and controlled out
The corresponding clutch 15 of the slave motor of existing failure is detached from transmission device 11.
It should be noted that when one or several motors 10 break down or fail, the motor 10 that can work normally
The sum of output torque can satisfy torque needed for pitch variable bearings 12 carry out variable pitch.Avoid due to individual 10 failures of motor or
The case where failure causes wind power generating set to be unable to operate normally, guarantee in 10 trouble or failure of motor, 13 energy of pitch variable bearings
It is enough normally carried out variable pitch, wind power generating set can operate normally, and improve the operational reliability of wind power generating set.
In this example, when breaking down from motor, pitch drive equipment can be learnt in time, and taken and accordingly arranged
It applies, pitch drive equipment fault is avoided to run, to avoid influencing variable pitch and the power generation of wind power generating set, so that pitch axis
Variable pitch can be normally carried out by holding 12, and wind power generating set can operate normally, and improve the operational reliability of wind power generating set.
In the another example of another embodiment of the present invention, main control unit 16 is additionally configured to the corresponding drive of monitoring main motor
The heartbeat signal of dynamic device 13.Corresponding, Fig. 6 is the pitch drive control method in the another example of another embodiment of the present invention
Flow chart, Fig. 6 the difference from Fig. 2 is that, as shown in fig. 6, pitch drive control method further includes step 207- step
208。
Step 207, the heartbeat signal of the corresponding driver 13 of main motor is monitored by main control unit 16.
Step 208, when the heartbeat signal for monitoring the corresponding driver 13 of main motor is abnormal, by main control unit 16
Control pitch variable bearings are put away the oars, and are controlled clutch 15 corresponding with main motor and be detached from transmission device 11.
When the heartbeat signal of the corresponding driver 13 of main motor is abnormal, show that the corresponding driver 13 of main motor is sent out
Raw failure, possibly can not drive main motor.Therefore it needs that control pitch variable bearings 12 is taken to put away the oars, controls corresponding with main motor
Clutch 15 and transmission device 11 be detached from etc. corresponding measures.
In another example of another embodiment of the present invention, it is additionally configured to monitor main electricity from the corresponding driver 13 of motor
The heartbeat signal of the corresponding driver 13 of machine.Main control unit is also connected with from the corresponding driver 13 of motor, can be from from motor
Corresponding driver 13 is instructed or information.Corresponding, Fig. 7 is that the variable pitch in another example of another embodiment of the present invention passes
The flow chart of flowing control method, Fig. 7 the difference from Fig. 2 is that, as shown in fig. 7, pitch drive control method further include step
Rapid 209- step 211.
In step 209, by the heartbeat signal from the corresponding driver 13 of the corresponding monitoring of driver 13 main motor of motor.
In step 210, when the heartbeat signal for monitoring the corresponding driver 13 of main motor is abnormal, by from motor
Corresponding driver 13 sends notification information to main control unit 16.
Wherein, the notification message is for notifying the corresponding driver 13 of 16 main motor of main control unit to break down or fail.
In step 211, by main control unit 16 according to notification information, pitch variable bearings 12 are controlled and are put away the oars, and control with
The corresponding clutch 15 of main motor is detached from transmission device 11.
It should be noted that in above-mentioned two example, the case where heartbeat signal is abnormal, includes and is not limited to main electricity
The case where heartbeat signal of the corresponding driver 13 of machine disappears and corresponding 13 heartbeat signal of driver of main motor and normal
Not the case where heartbeat signal is not inconsistent.
It in the examples described above, can be by main control unit or from the corresponding driver 13 of motor to the corresponding driver of main motor
13 are monitored, and when the corresponding driver 13 of main motor breaks down, can take timely measure, avoid main motor corresponding
The failure of driver 13 influences the normal operation that pitch variable bearings 12 carry out variable pitch and wind power generating set.
Fig. 8 is the structural schematic diagram of the pitch drive equipment in further embodiment of this invention, and pitch drive shown in Fig. 8 is set
It is standby with pitch drive equipment shown in Fig. 3 the difference is that, pitch drive equipment shown in Fig. 8 further include be arranged in variable pitch
Case device 17 is embraced on bearing 12.Above-mentioned armful of case device 17 can be configured to be embraced according to what the corresponding driver 13 of main motor was sent
Lock instruction carries out band-type brake to pitch variable bearings 12.If being mounted on band brake apparatus 17 on each motor 10, band brake apparatus is being needed
When 17 pairs of motors 10 carry out band-type brake, it is possible that the progress band-type brake of multiple band brake apparatus 17 on multiple motors 10 is asynchronous, lead
The torque for causing multiple motors 10 to export jointly generates fluctuation, to influence wind power generating set normal work.Alternatively, if each
It is mounted on band brake apparatus 17 on motor 10, when one or more of 17 failures of band brake apparatus, is unable to complete holding brake action
Or completion holding brake action is slower, then cannot complete holding brake action or complete the slower corresponding motor of band brake apparatus 17 of holding brake action
10 transmission devices 11 driven can instantaneously undertake the load that should assign in multiple motors 10, to motor 10 and transmission device 11
It will cause damage.It is also possible to other band brake apparatus 17 for completing holding brake action can not provide enough brake force and stop blade
Only run.In embodiments of the present invention, band brake apparatus 17 is arranged on pitch variable bearings 12, when needing blade out of service,
Control band brake apparatus 17 can be instructed to brake pitch variable bearings 12 by band-type brake, avoid more motors 10 and complete holding brake action
Nonsynchronous situation.
In embodiments of the present invention, can be become when needing to brake pitch variable bearings 12 using 17 Duis of band brake apparatus
Paddle shaft holds 12 carry out band-type brakes, to realize the accurate braking to pitch variable bearings 12.
In one more embodiment of the present invention, the driver 13 being arranged in a one-to-one correspondence with multiple motors 10 is also configured to
Monitor the output torque and revolving speed of corresponding motor 10.Corresponding, Fig. 9 is the pitch drive controlling party in yet another embodiment of the invention
The flow chart of method, Fig. 9 the difference from Fig. 2 is that, as shown in figure 9, pitch drive control method further include step 212- step
Rapid 214.
In the step 212, the output torque and revolving speed of corresponding motor 10 are monitored by driver 13.
In step 213, if the numerical value that the output torque of corresponding motor 10 declines within the unit time is greater than preset torsion
Square falling-threshold value, and the numerical value that the revolving speed of corresponding motor 10 rises within the unit time is greater than preset revolving speed ascending threshold, by
Driver 13 stops working, or controls clutch 15 and the disengaging of transmission device 11 of corresponding motor 10.
When multiple transmission devices 11 drive pitch variable bearings 12 to rotate, if there is the case where individual 11 failures of transmission device,
For example, transmission device 11 is toothed belt, and when the fracture of single toothed belt, the output torque meeting for the motor 10 that driver 13 monitors
Occur it is larger fall and revolving speed can rise suddenly, in order to guarantee the normal work of wind power generating set, it is necessary to control driver
13 stop working, or control clutch 15 and the disengaging of transmission device 11 of corresponding motor 10.
In step 214, if the numerical value that the output torque of corresponding motor 10 rises within the unit time is greater than preset torsion
Square ascending threshold, and the numerical value that the revolving speed of corresponding motor 10 declines within the unit time is greater than preset revolving speed falling-threshold value, by
Driver 13 stops working, or controls clutch 15 and the disengaging of transmission device 11 of corresponding motor 10.
When multiple transmission devices 11 drive pitch variable bearings 12 to rotate, if there is the case where individual 11 failures of transmission device,
For example, transmission device 11 is toothed belt, when clamping stagnation occur in individual toothed belts, the output for the motor 10 that driver 13 monitors is turned round
Square can steeply rise and revolving speed can decline suddenly, in order to guarantee the normal work of wind power generating set, it is necessary to control driver
13 stop working, or control clutch 15 and the disengaging of transmission device 11 of corresponding motor 10.
Using above-mentioned pitch drive equipment and pitch drive control method, the torque monitoring and limit of motor 10 can be realized
System guarantees that wind power generating set can work normally.
It should be noted that encoder, limit switch or close switch etc. can also be set around pitch variable bearings 12,
The blade position of wind power generating set can be monitored and be verified using encoder, limit switch or close to switch etc..It can
To install limit switch in blade alert locations or close to switch, when blade turned position reaches blade alert locations, so that
Limit switch and close to switch conduction needs to issue instruction alarm, alarms to learn that blade reaches blade alert locations
Or early warning.
Functional block shown in above structural block diagram (such as driver, main control unit) can be implemented as hardware, software,
Firmware or their combination.When realizing in hardware, electronic circuit, specific integrated circuit may, for example, be
(ASIC), firmware appropriate, plug-in unit, function card etc..When being realized with software mode, element of the invention is used to execute
The program or code segment of required task.Perhaps code segment can store in machine readable media or pass through carrier wave to program
The data-signal of middle carrying is sent in transmission medium or communication links." machine readable media " may include can store or
Transmit any medium of information.
In addition, feature described in the invention, structure or characteristic can be incorporated in one or more in any suitable manner
In more embodiments.It will be appreciated, however, by one skilled in the art that technical solution of the present invention can be practiced without specific detail
In it is one or more, or can be using other methods, constituent element, material etc..In other cases, it is not shown in detail or retouches
Known features, material or operation are stated to avoid major technique intention of the invention is obscured.
Claims (14)
1. a kind of pitch drive equipment, for driving pitch variable bearings (12) to rotate, it is characterised in that:
Including multiple motors (10) and multiple transmission devices (11)；
The multiple motor (10) is configured as wherein each motor (10) and drives a transmission device (11), and the multiple electricity
The output torque of machine (10) is identical or the difference of output torque within the allowable range；
The multiple transmission device (11) is configured as under the drive of the multiple motor (10), and pitch variable bearings (12) is driven to turn
It is dynamic；
Wherein, a motor (10) in the multiple motor (10) be main motor, remaining motor (10) be from motor, it is described
Pitch drive equipment further includes the multiple drivers (13) being arranged in a one-to-one correspondence with the multiple motor (10), the main motor pair
The driver (13) answered is connected with described from the corresponding driver (13) of motor, corresponding driver (13) quilt of the main motor
It is configured to send control instruction, the control output torque from motor from the corresponding driver of motor (13) to described.
2. pitch drive equipment according to claim 1, which is characterized in that the multiple driver (13) is configured as driving
The multiple motor (10) are moved, so that the output torque of the multiple motor (10) is identical or the difference of output torque is allowing model
In enclosing；
The driver (13) is additionally configured to monitor the output torque and revolving speed of corresponding motor (10).
3. pitch drive equipment according to claim 1, which is characterized in that further include being arranged in the pitch variable bearings (12)
On variable pitch speed acquisition device (14), the variable pitch speed acquisition device (14) is configured as acquiring the pitch variable bearings (12)
Practical variable pitch speed.
4. pitch drive equipment according to claim 3, which is characterized in that the variable pitch speed acquisition device (14) goes back quilt
It is configured to the practical variable pitch speed of acquisition being delivered separately to the multiple driver (13)；
The multiple driver (13) is additionally configured to the difference of the target variable pitch speed according to the practical variable pitch speed and setting
Value controls corresponding motor (10) adjustment output torque.
5. pitch drive equipment according to claim 3, which is characterized in that the variable pitch speed acquisition device (14) is matched
It is set to and the practical variable pitch speed of acquisition is passed into the corresponding driver of the main motor (13)；
The corresponding driver (13) of the main motor is additionally configured to the target variable pitch according to the practical variable pitch speed and setting
The difference of speed controls the main motor adjustment output torque, and adjusts to described send from the corresponding driver of motor (13)
Whole instruction；
Described to be additionally configured to from the corresponding driver of motor (13) according to the adjustment instruction, control is described defeated from motor adjustment
Torque out.
6. pitch drive equipment according to claim 1, which is characterized in that further include setting the motor (10) with it is right
The clutch (15) between transmission device (11) answered, the clutch (15) be configured as controlling the motor (10) with it is corresponding
Transmission device (11) transmission connection or be detached from.
7. pitch drive equipment according to claim 1, which is characterized in that further include being arranged in the pitch variable bearings (12)
On embrace case device (17), described armful of case device (17) be configured as according to the corresponding driver of the main motor (13) send
Band-type brake instruction carries out band-type brake to the pitch variable bearings (17).
8. pitch drive equipment according to claim 1, which is characterized in that further include being separately connected with multiple drivers
Main control unit (16), the main control unit (16) be configured as being sent according to the corresponding driver of the main motor (13) from
The fault message of motor.
9. pitch drive equipment described in any one of -8 according to claim 1, which is characterized in that the transmission device (11)
For toothed belt or gear.
10. a kind of pitch drive control method, which is characterized in that for change described in any one of the claims 1-9
Paddle drive apparatus, the multiple motor (10) drives the multiple transmission device (11), to drive the pitch variable bearings (12)
Variable pitch function is realized in rotation.
11. pitch drive control method according to claim 10, which is characterized in that the method also includes:
Failure letter is sent by the corresponding driver (13) of the corresponding driver of slave motor (13) the Xiang Suoshu main motor to break down
Breath；
The fault message is sent from the corresponding driver of the main motor (13) to main control unit (16)；
It by the main control unit (16) according to the fault message, controls pitch variable bearings (12) and puts away the oars, and control appearance event
The corresponding clutch of slave motor (16) of barrier and transmission device (11) are detached from.
12. pitch drive control method according to claim 10, which is characterized in that the method also includes:
The heartbeat signal of the corresponding driver (13) of the main motor is monitored by main control unit (16)；
When the heartbeat signal for monitoring the corresponding driver of the main motor (13) is abnormal, by the main control unit (16)
Control pitch variable bearings (12) is put away the oars, and it is de- with transmission device (11) to control clutch (15) corresponding with the main motor
From.
13. pitch drive control method according to claim 10, which is characterized in that the method also includes:
By the heartbeat signal for monitoring the corresponding driver (13) of the main motor from the corresponding driver of motor (13)；
When the heartbeat signal for monitoring the corresponding driver of the main motor (13) is abnormal, by described corresponding from motor
Driver (13) sends notification information to main control unit (16)；
It by main control unit (16) according to the notification information, controls pitch variable bearings (12) and puts away the oars, and control and the main electricity
The corresponding clutch of machine (15) and transmission device (11) are detached from.
14. pitch drive control method according to claim 10, which is characterized in that further include:
The output torque and revolving speed of corresponding motor are monitored by the driver (13)；
If the numerical value that the output torque of corresponding motor (10) declines within the unit time is greater than preset torque falling-threshold value, and institute
It states the numerical value that the revolving speed of corresponding motor (10) rises within the unit time and is greater than preset revolving speed ascending threshold, by the driver
(10) it stops working, or clutch (15) and transmission device (11) disengaging of the control corresponding motor (10)；
If the numerical value that the output torque of the corresponding motor (10) rises within the unit time is greater than preset torque ascending threshold,
And the numerical value that the revolving speed of the corresponding motor (10) declines within the unit time is greater than preset revolving speed falling-threshold value, by the drive
Dynamic device (13) stop working, or clutch (15) and transmission device (11) disengaging of the control corresponding motor (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611151940.6A CN108223267B (en) | 2016-12-14 | 2016-12-14 | Variable pitch transmission equipment and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611151940.6A CN108223267B (en) | 2016-12-14 | 2016-12-14 | Variable pitch transmission equipment and control method |
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| Publication Number | Publication Date |
|---|---|
| CN108223267A CN108223267A (en) | 2018-06-29 |
| CN108223267B true CN108223267B (en) | 2019-07-26 |
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|---|---|---|---|
| CN201611151940.6A Active CN108223267B (en) | 2016-12-14 | 2016-12-14 | Variable pitch transmission equipment and control method |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112253384B (en) * | 2020-10-22 | 2022-04-22 | 中国船舶重工集团海装风电股份有限公司 | Safe blade retracting control method for double-drive variable pitch system of wind generating set |
| CN114810478A (en) * | 2022-04-08 | 2022-07-29 | 福氏新能源技术(上海)有限公司 | Multi-machine synchronous driving method, variable pitch system and wind generating set |
| CN114810479A (en) * | 2022-04-08 | 2022-07-29 | 福氏新能源技术(上海)有限公司 | Multi-machine synchronous driving method, variable pitch system thereof and wind generating set |
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| CN1481475A (en) * | 2000-11-14 | 2004-03-10 | ֱ | Wind energy turbine |
| WO2008074320A1 (en) * | 2006-12-18 | 2008-06-26 | Vestas Wind Systems A/S | A gear system for a yaw drive or a pitch drive for a wind turbine |
| CN201757027U (en) * | 2010-08-19 | 2011-03-09 | 广东东兴风盈风电设备制造有限公司 | Pitch control connection device of wind-driven generator |
| EP2574782A2 (en) * | 2011-09-27 | 2013-04-03 | Nabtesco Corporation | Driving device for wind turbine |
| WO2013147510A1 (en) * | 2012-03-29 | 2013-10-03 | 삼성중공업 주식회사 | Wind power generator and pitch bearing for wind power generator |
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| CN1481475A (en) * | 2000-11-14 | 2004-03-10 | ֱ | Wind energy turbine |
| US6939103B2 (en) * | 2000-11-14 | 2005-09-06 | Aloys Wobben | Wind power installation with multiple blade adjusting devices |
| WO2008074320A1 (en) * | 2006-12-18 | 2008-06-26 | Vestas Wind Systems A/S | A gear system for a yaw drive or a pitch drive for a wind turbine |
| CN201757027U (en) * | 2010-08-19 | 2011-03-09 | 广东东兴风盈风电设备制造有限公司 | Pitch control connection device of wind-driven generator |
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| CN108223267A (en) | 2018-06-29 |
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