CN109855785A - A kind of wind generating set pitch control motor brake torque measuring method - Google Patents
A kind of wind generating set pitch control motor brake torque measuring method Download PDFInfo
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- CN109855785A CN109855785A CN201910110693.2A CN201910110693A CN109855785A CN 109855785 A CN109855785 A CN 109855785A CN 201910110693 A CN201910110693 A CN 201910110693A CN 109855785 A CN109855785 A CN 109855785A
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Abstract
The invention discloses a kind of wind generating set pitch control motor brake torque measuring methods, a moment values are mainly exported by variable pitch driver and give motor brake brake, then judge the moment values lower brake brake disc with the presence or absence of relative displacement with pitch motor encoder；If brake is taken inventory in relative displacement, illustrate under the external force can driving brake brake, driving moment value is greater than brake actuator torque；If relative displacement is not present in brake disk, illustrate to be unable to driving brake brake under the external force, driving moment value is less than brake actuator torque；In the whole process, motor brake brake persistently keeps band-type brake state；The output torque value of variable pitch driver can regulation and control, by repeat adjustment variable pitch driver output torque value come the true moment values range of lock out motor brake actuator.The present invention may be implemented it is quick, accurate, judge pitch motor brake torque without hardware cost, low cost of labor and working hour.
Description
Technical field
The present invention relates to the technical fields of electric variable propeller system of wind generating set, refer in particular to a kind of wind power generating set
Pitch motor brake torque detection method.
Background technique
Known in the industry, the drive part of electric variable propeller system is generally by pitch motor, variable-pitch variable-speed case, variable pitch brake
The components such as device, transmission gear composition.Wherein variable pitch brake actuator plays the role of brake positioning fan blade position.Base
In the characteristic of brake actuator, there are the decline of brake torque value and failure likelihoods.In order to effectively judge variable pitch brake system
Whether the moment values of dynamic device are requiring within the scope of moment values, and detecting more common method for pitch motor brake torque at present has
Three kinds below:
1, the installation detecting device in variable pitch brake actuator
By installing additional sensor (such as close to switch, current sensor) or sensing device in brake actuator
Judge and feed back to pitch-controlled system or fan master control system.
The advantages of this mode is can to obtain in real time the result of sensor detection with real time on-line monitoring.
The disadvantage is that needing to increase additional hardware cost.And this method is measured by indirect mode, accuracy is inclined
It is low, it is easy false triggering or fails triggering alarm.
2, artificial detection variable pitch brake actuator braking gap
By removing variable pitch brake actuator, whether meet brake request using professional tool detection brake.Also there is portion
Point do not need to remove can external detection brake, directly remove corrosion-inhibiting coating application professional tool into measurement.
The advantages of this mode is can intuitively to see very much or measure brake block abrasion condition, and accuracy is higher.
The disadvantage is that operation difficulty is higher, the mounting and adjusting step after especially having checked generally requires professional
It is operated.For do not need remove can external measurement brake, need first to remove corrosion-inhibiting coating, after the completion of operation there is still a need for
Anti-corrosion is supplemented, live operability is weaker.
3, it is verified using torque spanner
In general, the variable pitch brake actuator of electric variable propeller system is installed on pitch motor tail portion, connects with pitch motor
For entirety.Directly pitch motor is removed, using the moment values of torque spanner measurement motor side, variable pitch braking can also be measured
The brake torque of device.
The advantages of this mode is that measurement result accuracy is high, and operation mode is direct, does not need professional's progress.
The disadvantage is that need to remove pitch motor, and heavy workload, high labor cost, operative employee's duration.
In conclusion being primarily present following disadvantage in the mode of existing detection pitch-controlled system pitch motor brake torque:
1, in additional sensor detection scheme, measurement result accuracy is low, when being easy false triggering alarm or should alert not
It can trigger alarm.And it needs to increase additional hardware cost in every set pitch-controlled system.
2, in brake actuator gap detection scheme, operation difficulty is big when test is completed to need to restore to adjust gap, needs
Professional completes.
3, in pitch motor torque spanner checkschema, need to remove pitch motor, heavy workload operates cost of labor
Height, working hour are long.Batch jobs operability is lower.
Summary of the invention
The purpose of the present invention is to overcome the shortcomings of the existing technology and deficiency, proposes a kind of rationally reliable wind-power electricity generation
Set pitch control motor brake torque measuring method, this method may be implemented it is quick, accurate, without hardware cost, low cost of labor and
Judge to working hour pitch motor brake torque.
To achieve the above object, a kind of technical solution provided by the present invention are as follows: wind generating set pitch control motor brake
Torque measuring method, this method is to export a moment values by variable pitch driver to give motor brake brake, then with variable pitch electricity
Machine encoder judges the moment values lower brake brake disc with the presence or absence of relative displacement；If brake is taken inventory in opposite position
Move, then explanation under the external force can driving brake brake, driving moment value be greater than brake actuator torque；If system
Relative displacement is not present in dynamic device brake disc, then explanation is unable to driving brake brake under the external force, and driving moment value is small
In brake actuator torque；In the whole process, motor brake brake persistently keeps band-type brake state；The output of variable pitch driver
Moment values can regulation and control, finally by repeat adjustment variable pitch driver output torque value carry out lock out motor brake
The true moment values range of device.
Further, the wind generating set pitch control motor brake torque measuring method, comprising the following steps:
1) variable pitch driver output torque
Pitch-controlled system by itself driver export a moment values, for the first time input this moment values according to demand from
Definition setting carries out repeating adjustment later according to feedback；
2) pitch motor encoder feedback
Pitch motor encoder reads the swing offset amount of brake disk, passes through the feedback energy of pitch motor encoder
Whether enough confirmation brake blocks rotate, if there are relative displacements；
3) when there is motor position generation relative displacement, illustrate that current variable pitch driver output torque can drive electricity
Machine brake actuator, i.e., current variable pitch driver output torque value are greater than motor brake braking moment value, need to reduce variable pitch
Driver output torque carries out driving output with the output torque value lower than current variable pitch driver again；When there is motor position
It sets when relative displacement not occurring, illustrates that current variable pitch driver output torque is unable to driving motor brake actuator, i.e., currently
Variable pitch driver output torque value be less than motor brake braking moment value, need to increase variable pitch driver output torque, with height
Driving output is carried out again in the output torque value of current variable pitch driver；
4) by repeating the output torque value of adjustment variable pitch driver, the motor brake brake value finally obtained is one
Interval range, which is greater than motor and variable pitch driver maximum output torque value when relative displacement does not occur, but is less than motor and sends out
Variable pitch driver minimum output torque value when raw relative displacement；
Wherein, in the whole process, motor brake brake persistently keeps band-type brake state, variable pitch driver output torque value
It is to be acted directly on by pitch motor on motor brake brake.
Compared with prior art, the present invention have the following advantages that with the utility model has the advantages that
1, the method for the present invention can not only guarantee certain accuracy but also can improve operating efficiency, can it is quick, simple, low at
The local pitch motor brake torque detection for completing wind generating set pitch control system.
2, the method for the present invention accuracy be higher than sensor plan and do not need increase additional hardware cost, and can at any time into
Row verifying, solves the problem of that sensor plan test accuracy is low and needs additionally to increase cost.
3, the method for the present invention is better than mechanical detection mode in operation ease and on working hour needed for operating, and does not need to remove electricity
Machine or brake, are only controlled, and mechanically actuated detection is saved.
Detailed description of the invention
Fig. 1 is the logical flow chart of present example.
Specific embodiment
The present invention is further explained in the light of specific embodiments.
Brake actuator removes driving brake brake under band-type brake state, with an external force.When this external force is less than brake
When the band-type brake torque of brake, then it is unable to the rotation of driving brake brake, generates relative displacement；When this external force is greater than brake system
When the band-type brake torque of dynamic device, brake actuator can then be rotated, and generate relative displacement.If by pitch motor brake actuator
Practical true moment values be defined on the critical value between being substantially equal to rotation and turning motionless, then can be according to judging outside this
The size of power determines the brake torque in a range intervals.This range is smaller, more approaching to reality value.
The principle of wind generating set pitch control motor brake torque measuring method provided by the present embodiment mainly passes through
Variable pitch driver exports a moment values and gives motor brake brake, then judges to brake under the moment values with pitch motor encoder
Device brake disc whether there is relative displacement；If brake is taken inventory in relative displacement, illustrate the energy under the external force
Enough driving brake brakes, driving moment value are greater than brake actuator torque；If relative displacement is not present in brake disk,
Then explanation is unable to driving brake brake under the external force, and driving moment value is less than brake actuator torque；In entire mistake
Cheng Zhong, motor brake brake persistently keep band-type brake state；The output torque value of variable pitch driver can regulation and control, finally
By repeating the output torque value of adjustment variable pitch driver come the true moment values range of lock out motor brake actuator.It includes
Following steps:
1) variable pitch driver output torque
Pitch-controlled system by itself driver export a moment values, for the first time input this moment values according to demand from
Definition setting carries out repeating adjustment later according to feedback；
2) pitch motor encoder feedback
Pitch motor encoder reads the swing offset amount of brake disk, passes through the feedback energy of pitch motor encoder
Whether enough confirmation brake blocks rotate, if there are relative displacements；
3) when there is motor position generation relative displacement, illustrate that current variable pitch driver output torque can drive electricity
Machine brake actuator, i.e., current variable pitch driver output torque value are greater than motor brake braking moment value, need to reduce variable pitch
Driver output torque carries out driving output with the output torque value lower than current variable pitch driver again；When there is motor position
It sets when relative displacement not occurring, illustrates that current variable pitch driver output torque is unable to driving motor brake actuator, i.e., currently
Variable pitch driver output torque value be less than motor brake braking moment value, need to increase variable pitch driver output torque, with height
Driving output is carried out again in the output torque value of current variable pitch driver；
4) by repeating the output torque value of adjustment variable pitch driver, the motor brake brake value finally obtained is one
Interval range, which is greater than motor and variable pitch driver maximum output torque value when relative displacement does not occur, but is less than motor and sends out
Variable pitch driver minimum output torque value when raw relative displacement；
Wherein, in above-mentioned whole process, motor brake brake persistently keeps band-type brake state, variable pitch driver power output
Square value is acted directly on motor brake brake by pitch motor.
Principle based on the method for the present invention, in practical applications can be there are many embodiment according to specific requirements.Below
It is only the embodiment citing for a certain demand.
Wind power generating set needs to judge whether variable pitch brake torque value meets loading demands under certain extreme operating conditions, such as exists
There is the wind power generating set of typhoon overlay area and a kind of or super a kind of wind field.By taking the blower in typhoon region as an example, come in typhoon
Face front and back to be required to be judged, judgment mode needs fast and reliable.As shown in Figure 1, wind-power electricity generation provided by the present embodiment
Set pitch control motor brake torque measuring method, concrete condition are as follows:
1) this citing is directed to three-vane wind generator group electric variable propeller system.Positive " Y " font position refers to past from wheel hub
Cabin direction position sees, the position that three blades are presented.Tested blade is in following position directly, blower fan main shaft brake system
Brake, mainly in view of reducing influence of the blade gravity to test result.
2) pitch motor direction of rotation and target angular position are set, refer to the side of setting driver driving brake brake
To and target position.Direction can be out paddle direction and be also possible to feathering direction, and target angular position is needed according to pitch drive
The transmission ratios of system calculate, and obtain brake actuator brake disc spins one and enclose required displacement.
3) pitch motor brake actuator band-type brake position state is triggered, refers to and needs driving pitch motor brake actuator
Band-type brake state is still kept when device drives in short-term.
4)TNRefer to the nominal brake torque value of pitch motor.First time driving moment chooses TN, that is, judge actual value be higher than or
Lower than nominal torque.
5) motor encoder can read motor rotation angle value, it can judge the swing offset of brake disk
Amount.Judge whether brake actuator rotates according to whether rotation angle value reaches setting target position.
6)TSRefer to the motor brake braking moment value that test obtains.According to motor encoder feedback quantity, target is not reached
Position, motor do not rotate, then illustrate TSMore than or equal to TN。
7) according to motor encoder feedback quantity, target position is reached, motor rotation then illustrates TSLess than TN。
8)TLRefer to brake torque qualification limit value, that is, it is then unqualified for testing resulting brake torque value lower than the limit value.
Second of driving moment chooses TL, judge whether actual value meets the requirements.
9) encoder feedback amount is read again to be judged.
10) with TLMoment values driving does not reach target position and illustrates test gained torque in qualified moment values and nominal force
Between square value.
11) with TLMoment values driving reaches target position and illustrates that test gained torque is less than qualified moment values standard.
Embodiment described above is only the preferred embodiments of the invention, and but not intended to limit the scope of the present invention, therefore
All shapes according to the present invention change made by principle, should all be included within the scope of protection of the present invention.
Claims (2)
1. a kind of wind generating set pitch control motor brake torque measuring method, it is characterised in that: this method is driven by variable pitch
Dynamic device exports a moment values and gives motor brake brake, then judges that the moment values lower brake is braked with pitch motor encoder
Disk whether there is relative displacement；If brake is taken inventory in relative displacement, illustrate to drive under the external force
Brake actuator, driving moment value are greater than brake actuator torque；If relative displacement is not present in brake disk, illustrate
Driving brake brake is unable under the external force, driving moment value is less than brake actuator torque；In the whole process, electric
Machine brake actuator persistently keeps band-type brake state；The output torque value of variable pitch driver can regulation and control, finally by weight
The output torque value of the whole variable pitch driver of polyphony carrys out the true moment values range of lock out motor brake actuator.
2. a kind of wind generating set pitch control motor brake torque measuring method according to claim 1, which is characterized in that
The following steps are included:
1) variable pitch driver output torque
Pitch-controlled system exports a moment values by itself driver, this moment values of input are customized according to demand for the first time
Setting carries out repeating adjustment later according to feedback；
2) pitch motor encoder feedback
Pitch motor encoder reads the swing offset amount of brake disk, can be true by the feedback of pitch motor encoder
Recognize whether brake block rotates, if there are relative displacements；
3) when there is motor position generation relative displacement, illustrate that current variable pitch driver output torque being capable of driving motor brake
Vehicle brake, i.e., current variable pitch driver output torque value are greater than motor brake braking moment value, need to reduce pitch drive
Device output torque carries out driving output with the output torque value lower than current variable pitch driver again；When there is motor position not
When relative displacement occurs, illustrate that current variable pitch driver output torque is unable to driving motor brake actuator, i.e., current change
Pitch driver output torque value is less than motor brake braking moment value, needs to increase variable pitch driver output torque, is worked as with being higher than
The output torque value of preceding variable pitch driver carries out driving output again；
4) by repeating the output torque value of adjustment variable pitch driver, the motor brake brake value finally obtained is a section
Range, which is greater than motor and variable pitch driver maximum output torque value when relative displacement does not occur, but is less than motor and phase occurs
To displacement time-varying pitch driver minimum output torque value；
Wherein, in the whole process, motor brake brake persistently keeps band-type brake state, and variable pitch driver output torque value is logical
Pitch motor is crossed to act directly on motor brake brake.
Priority Applications (1)
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| CN201910110693.2A CN109855785A (en) | 2019-02-12 | 2019-02-12 | A kind of wind generating set pitch control motor brake torque measuring method |
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| CN201910110693.2A CN109855785A (en) | 2019-02-12 | 2019-02-12 | A kind of wind generating set pitch control motor brake torque measuring method |
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ID=66897686
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| CN201910110693.2A Pending CN109855785A (en) | 2019-02-12 | 2019-02-12 | A kind of wind generating set pitch control motor brake torque measuring method |
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Cited By (7)
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|---|---|---|---|---|
| CN110470459A (en) * | 2019-08-11 | 2019-11-19 | 埃斯倍风电科技(青岛)有限公司 | A kind of motor brake test method of pitch-controlled system |
| CN110821758A (en) * | 2019-11-13 | 2020-02-21 | 固安华电天仁控制设备有限公司 | Wind turbine generator pitch motor braking torque online detection device and method |
| CN112008761A (en) * | 2020-08-27 | 2020-12-01 | 中科新松有限公司 | Brake module with brake detection function and brake function detection method |
| CN112008762A (en) * | 2020-08-27 | 2020-12-01 | 中科新松有限公司 | Fully-sealed brake module with double-channel detection function and detection method |
| CN112763126A (en) * | 2021-01-28 | 2021-05-07 | 国能信控互联技术(河北)有限公司 | Brake torque testing method and system for variable pitch synchronous motor brake |
| CN114199447A (en) * | 2021-11-26 | 2022-03-18 | 明阳智慧能源集团股份公司 | Online detection method for braking torque of variable-pitch motor brake of wind turbine generator |
| CN114382644A (en) * | 2021-12-01 | 2022-04-22 | 重庆海装风电工程技术有限公司 | Wind generating set brake self-checking method and system and storage medium |
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| CN114199447A (en) * | 2021-11-26 | 2022-03-18 | 明阳智慧能源集团股份公司 | Online detection method for braking torque of variable-pitch motor brake of wind turbine generator |
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