CN105048912B - Noise reduction voltage obtaining method, noise reduction method and noise reduction device of synchronous wind driven generator - Google Patents
Noise reduction voltage obtaining method, noise reduction method and noise reduction device of synchronous wind driven generator Download PDFInfo
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- 230000009467 reduction Effects 0.000 title claims abstract description 128
- 238000000034 method Methods 0.000 title claims abstract description 71
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 22
- 239000013598 vector Substances 0.000 claims abstract description 86
- 238000002347 injection Methods 0.000 claims abstract description 55
- 239000007924 injection Substances 0.000 claims abstract description 55
- 230000003068 static effect Effects 0.000 claims abstract description 18
- 238000012544 monitoring process Methods 0.000 claims abstract description 14
- 230000000737 periodic effect Effects 0.000 claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 6
- 244000079889 Cymbidium pendulum Species 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000012216 screening Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 3
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Abstract
The embodiment of the invention provides a noise reduction voltage obtaining method, a noise reduction method and a noise reduction device of a synchronous wind driven generator, wherein the method comprises the following steps: controlling the high-order harmonic candidate voltage vector under the two-phase rotating coordinate system to complete at least one time of periodic change within a preset range; converting the higher harmonic candidate voltage vector into a three-phase voltage injection value of the corresponding higher harmonic in a three-phase static coordinate system, correspondingly superposing the three-phase voltage injection value with a given three-phase voltage given value of a fundamental wave given by a machine side inverter controller, and injecting the sum value into the synchronous wind driven generator; monitoring the vibration or noise value of the synchronous wind driven generator; and in each period, the higher harmonic candidate voltage vector corresponding to the minimum value in the vibration or noise value of the synchronous wind driven generator is used as the higher harmonic noise reduction voltage. The technical scheme of the invention can reduce the vibration and noise of the generator and prolong the service life of the generator.
Description
Technical field
The present invention relates to technical field of wind power, more particularly to a kind of synchro wind generator noise reduction voltage acquisition methods,
Noise-reduction method and device.
Background technology
In traditional permanent magnet synchronous wind generator (referred to as " generator "), to produce constant electromagnetic torque, it is necessary to send out
The electromotive force and electric current of motor are sine wave, but the spatial distribution of actually permanent magnetism or excitation field or stator winding is impossible
It is complete sinusoidal, so the waveform of induced electromotive force is bound to be distorted.Meanwhile, by the stator current of inverter feed-in,
Although sine wave can be approached through ovennodulation, wherein still contain many higher hamonic waves.Because of induced electromotive force and stator current
Distortion caused by torque be referred to as Cymbidium aloifolium, this Cymbidium aloifolium can cause Generator Vibration and noise problem.
The content of the invention
Embodiments of the invention provide a kind of noise reduction voltage acquisition methods, noise-reduction method and the dress of synchro wind generator
Put, to realize vibration and the noise of reduction generator, extend generator service life.
To reach above-mentioned purpose, The embodiment provides a kind of noise reduction voltage acquisition side of synchro wind generator
Method, including：
Start single noise reduction voltage and obtain flow, the single noise reduction voltage, which obtains flow, to be included：
Higher hamonic wave candidate's voltage vector under control two-phase rotating coordinate system is completed at least one times in presetting range
Cyclically-varying；
The higher hamonic wave candidate voltage vector in each cycle is converted into corresponding height under three-phase static coordinate system
The three-phase voltage injection value of subharmonic；
The three-phase voltage for the fundamental wave that the three-phase voltage injection value of the higher hamonic wave and pusher side circuit control device are given
After set-point correspondence superposition, it is injected into the synchronous wind as final three-phase voltage set-point with value by pusher side inverter
Power generator；
Monitoring is injected into after the synchro wind generator using the final three-phase voltage set-point, the synchronous wind
The vibration of power generator or noise figure；
By in each cycle, the corresponding high order of minimum value in the vibration of the synchro wind generator or noise figure is humorous
Wave climate selects voltage vector as the corresponding higher hamonic wave noise reduction voltage of the synchro wind generator.
Embodiments of the invention additionally provide a kind of noise-reduction method of synchro wind generator, including：
The higher hamonic wave noise reduction that will be obtained by the noise reduction voltage acquisition methods of synchro wind generator as described above
Voltage conversion is the three-phase voltage injection value of corresponding higher hamonic wave under the three-phase static coordinate system；
The three-phase voltage for the fundamental wave that the three-phase voltage injection value of the higher hamonic wave and pusher side circuit control device are given
After set-point correspondence superposition, it is injected into the synchronous wind as final three-phase voltage set-point with value by pusher side inverter
Power generator.
Embodiments of the invention additionally provide a kind of noise reduction voltage acquisition apparatus of synchro wind generator, including：
Start control module, flow is obtained for starting single noise reduction voltage；
Periodic Control module, for the height under the control two-phase rotating coordinate system in single noise reduction voltage acquisition flow
Subharmonic candidate's voltage vector completes cyclically-varying at least one times in presetting range；
First shift control module, for obtaining flow in the single noise reduction voltage in by the height in each cycle
Subharmonic candidate's voltage vector is converted to the three-phase voltage injection value of corresponding higher hamonic wave under three-phase static coordinate system；
First summation injection module, for obtaining flow in the single noise reduction voltage in by the three-phase of the higher hamonic wave
After the superposition corresponding with the three-phase voltage set-point for the fundamental wave that pusher side circuit control device gives of voltage injection value, itself and value are as most
Whole three-phase voltage set-point is injected into the synchro wind generator by pusher side inverter；
Monitoring modular, the synchro wind generator is injected into for monitoring using the final three-phase voltage set-point
Afterwards, the vibration of the synchro wind generator or noise figure；
Noise reduction voltage determination module, for obtaining flow in the single noise reduction voltage in by each cycle, the synchronization
The corresponding higher hamonic wave candidate voltage vector of minimum value in the vibration of wind-driven generator or noise figure is used as the synchronization
The corresponding higher hamonic wave noise reduction voltage of wind-driven generator.
Embodiments of the invention additionally provide a kind of denoising device of synchro wind generator, the synchro wind generator
Denoising device be connected with the noise reduction voltage acquisition apparatus of synchro wind generator as described above, the synchro wind generator
Denoising device include the second shift control module and second summation injection module；
Second shift control module, for the noise reduction voltage acquisition apparatus of the synchro wind generator is final
The higher hamonic wave noise reduction voltage conversion arrived is the three-phase electricity pressure injection of corresponding higher hamonic wave under the three-phase static coordinate system
Enter value；
The second summation injection module, for by the three of the corresponding higher hamonic wave of the higher hamonic wave noise reduction voltage
After the corresponding superposition of the three-phase voltage set-point of the fundamental wave that phase voltage injection value and pusher side circuit control device give, itself and be worth conduct
Final three-phase voltage set-point is injected into the synchro wind generator by pusher side inverter.
Noise reduction voltage acquisition methods, noise-reduction method and the device of synchro wind generator provided in an embodiment of the present invention, will
Higher hamonic wave candidate voltage vector completes cyclically-varying at least one times in its presetting range under two-phase rotating coordinate system, and
The three-phase voltage injection value that higher hamonic wave is translated into each period of change is injected into generator；After voltage injection, screening
The corresponding higher hamonic wave candidate voltage vector of minimum value in the vibration of generator or noise figure drops as corresponding higher hamonic wave
Make an uproar voltage, and noise reduction process is carried out to generator using the higher hamonic wave noise reduction voltage, to extend generator service life.
Brief description of the drawings
The method flow of the noise reduction voltage acquisition methods one embodiment for the synchro wind generator that Fig. 1 provides for the present invention
Figure；
The voltage vector coordinate schematic diagram of higher hamonic wave under the dq coordinate systems that Fig. 2 uses for the present invention；
The method stream for the noise reduction voltage acquisition methods of synchro wind generator another embodiment that Fig. 3 provides for the present invention
Cheng Tu；
The method stream for the noise reduction voltage acquisition methods of synchro wind generator another embodiment that Fig. 4 provides for the present invention
Cheng Tu；
The method flow diagram of the noise-reduction method one embodiment for the synchro wind generator that Fig. 5 provides for the present invention；
The method flow diagram for the noise-reduction method of synchro wind generator another embodiment that Fig. 6 provides for the present invention；
The structural representation of the noise reduction voltage acquisition apparatus one embodiment for the synchro wind generator that Fig. 7 provides for the present invention
Figure；
The structural representation of the denoising device one embodiment for the synchro wind generator that Fig. 8 provides for the present invention.
Drawing reference numeral explanation
610- power networks, 620- transformers, 630- net sides inverter, 640- pusher sides inverter, 650- wind-driven generators, 660-
Vibration and noise transducer, 670- impellers and main axis transmission system, 680- higher hamonic wave noise reductions voltage acquisition apparatus, 690-dq/
Abc coordinate systems modular converter, 710- start control module, 720- periodic Controls module, the shift control modules of 730- first, 740-
First summation injection module, 750- monitoring modulars, 760- noise reductions voltage determination module, the noise reduction dress of 800- synchro wind generators
Put, the shift control modules of 810- second, 820- second summation injection module.
Embodiment
In the prior art, as permanent magnet synchronous wind generator uses Y connections, in stator current without 3 and 3 it is humorous for several times again
Contain the odd harmonics such as 5,7,11,13 in ripple, i.e. stator current, because more than 7 times harmonic attenuation is very fast, therefore, this programme
5,7 primary current harmonic waves can mainly be considered.Assuming that this 5,7 primary current harmonic wave and 5,7 induced electromotive force harmonic in-phase positions, then by 5,
7 subharmonic can produce the Cymbidium aloifolium of 6 times, and the Cymbidium aloifolium can cause the larger vibration of generator, produce that tone is higher to make an uproar
Sound, the service life of extreme influence generator.
To solve above-mentioned 6 Cymbidium aloifoliums of magneto alternator, the solution of the present invention design is by pusher side inverter
Injection such as 5,7 subharmonic voltages into generator, to offset 5, the 7 subharmonic electromotive force of generator inherently, so as to offset
Or 5,7 subharmonic currents in reduction generator, 6 Cymbidium aloifoliums of reduction or elimination, so as to reduce or eliminate permanent-magnet synchronous generating
The vibration of machine and noise problem.
Embodiment one
The method flow of the noise reduction voltage acquisition methods one embodiment for the synchro wind generator that Fig. 1 provides for the present invention
Figure, the executive agent of this method can be the controller or integrated device in the controller of the pusher side inverter of Wind turbines
Or equipment.As shown in figure 1, the noise reduction voltage acquisition methods of the synchro wind generator include periodically starting single noise reduction voltage
Flow is obtained, the single noise reduction voltage, which obtains flow, includes step S110~S150：
Higher hamonic wave candidate's voltage vector under S110, control two-phase rotating coordinate system completes at least one in presetting range
Secondary cyclically-varying.
In the present embodiment, the two-phase rotating coordinate system (dq coordinate systems) that will be given in the original vector operation control of generator
Under voltage vector be referred to as fundamental wave vector, and described higher hamonic wave candidate voltage vector can be relative to base under dq coordinate systems
5 times, the voltage vector of 7 subharmonic of wave voltage vector.
Fig. 2 is the voltage vector coordinate schematic diagram of higher hamonic wave under the dq coordinate systems that use in embodiment described in this programme.
As shown in Fig. 2 wherein, a, b, c, which are constituted, differs 120 ° between threephase stator rest frame abc, each reference axis, wherein a axles are determined
Justice is in A on stator winding；α, β constitute two-phase stator stationary coordinate system α β, α axles and are also defined on A on stator winding, and a axles
It is same axis；D, q constitute two-phase rotor rotating coordinate system dq, and fundamental wave (1 is respectively illustrated in Fig. 2th), quintuple harmonics
(5th), the seventh harmonic (7th) dq coordinate systems；Wherein fundamental wave d axles (1thD) it is defined on the magnetic direction axis of rotor；θ、-5
θ, 7 θ are respectively that corresponding coordinate system lower rotor part position angle, ω, -5 ω, 7 ω are respectively the electric angle of generator under corresponding coordinate system
Speed；Uf、Us5th、Us7thRespectively voltage vector under corresponding coordinate system；Udf、Uqf、Ud5th、Uq5th、Ud7th、Uq7thIt is respectively corresponding
The direct-axis component or quadrature axis component of voltage vector under coordinate system；θf、θ5th、θ7thVoltage vector and d respectively under corresponding coordinate system
The angle (phase angle of voltage vector) of axle.
The present embodiment is to give higher hamonic wave candidate voltage vector as shown in Figure 2 such as Us5th、Us7thIt is used as above-mentioned high order
Harmonic wave candidate's voltage vector, and control its cyclically-varying completed in corresponding presetting range at least one times to include amplitude and phase
The change of parallactic angle.Specific change procedure and the presetting range are not construed as limiting.
S120, is converted to corresponding high order under three-phase static coordinate system humorous by higher hamonic wave candidate's voltage vector in each cycle
The three-phase voltage injection value of ripple.
Specifically, first, higher hamonic wave candidate's voltage vector in each cycle can be converted to by phase by formula (1) and (2)
Answer the direct-axis component and quadrature axis component under coordinate system.
Then, the direct-axis component and quadrature axis component of higher hamonic wave candidate's voltage vector are passed through into coordinate transform such as formula (3)
(4) changed, generate the three-phase of higher hamonic wave candidate voltage vector corresponding higher hamonic wave under three-phase static coordinate system
Voltage injection value.
Wherein, Ua5th、Ub5th、Uc5th；Ua7th、Ub7th、Uc7thRespectively 5 times or 7 subharmonic candidate's voltage vectors are in three-phase
A, b, c three-phase voltage injection value of corresponding higher hamonic wave under rest frame.
S130, the three-phase voltage for the fundamental wave that the three-phase voltage injection value of higher hamonic wave and pusher side circuit control device are given
After set-point correspondence superposition, itself and value are injected into synchronous wind-force by pusher side inverter as final three-phase voltage set-point and sent out
Motor.
Specifically, obtain as described above 5 times or 7 subharmonic candidate voltage vectors can be corresponded under three-phase static coordinate system
Higher hamonic wave three-phase voltage injection value Ua5th、Ub5th、Uc5thOr Ua7th、Ub7th、Uc7thRespectively with the fundamental wave electricity shown in Fig. 2
Press vector UfCorresponding three-phase voltage injection value Uaf、Ubf、UcfAfter correspondence is added, itself and value Ua5th+Uaf、Ub5th+Ubf、Uc5th+
UcfSynchro wind generator is injected into by pusher side inverter as final three-phase voltage set-point.
S140, monitoring is injected into after synchro wind generator using final three-phase voltage set-point, synchronous wind generating
The vibration of machine or noise figure.
Because in the prior art, Cymbidium aloifolium causes generator to vibrate, noise is generated, and the present embodiment is by week
Phase property injects the higher harmonic voltage of change to generator, so as to can reduce vibration or the height of noise of generator to filter out
Subharmonic voltage value.In specific screening process, mainly by vibration and noise transducer monitoring using above-mentioned final three
Phase voltage set-point is injected into after synchro wind generator, and the vibration of synchro wind generator or noise figure are determined
S150, by each cycle, the corresponding higher hamonic wave of minimum value in the vibration of synchro wind generator or noise figure
Candidate's voltage vector is used as the corresponding higher hamonic wave noise reduction voltage of synchro wind generator.
In theory, when the vibration of generator or minimum noise figure, the three-phase voltage injection of corresponding higher hamonic wave is characterized
Value has in best Noise Reduction, the present embodiment, and the three-phase voltage injection of the higher hamonic wave is worth into corresponding higher hamonic wave waits
Voltage vector is selected as the corresponding higher hamonic wave noise reduction voltage of generator.
The noise reduction voltage acquisition methods of synchro wind generator provided in an embodiment of the present invention, by by two cordic phase rotators
The lower higher hamonic wave candidate voltage vector of system completes cyclically-varying at least one times in its presetting range, and in each period of change
Inside be translated into higher hamonic wave three-phase voltage injection value and fundamental wave three-phase voltage set-point it is co-implanted to generator；Electricity
After pressure injection enters, the corresponding higher hamonic wave candidate voltage vector of minimum value in the vibration of screening generator or noise figure is as corresponding
Higher hamonic wave noise reduction voltage.This programme injects suitable amplitude to generator end by pusher side inverter and phase angle high order is humorous
Wave voltage, to balance out harmonic voltage component in generator induced electromotive force, so that induced electromotive force is more sinusoidal, and then
So that dynamo current is more sinusoidal, so that Generator Vibration and noise caused by harmonic carcellation torque, extension generator are used
Life-span.
Embodiment two
The method stream for the noise reduction voltage acquisition methods of synchro wind generator another embodiment that Fig. 3 provides for the present invention
Cheng Tu, can be considered a kind of specific implementation of embodiment of the method shown in Fig. 1.On the basis of embodiment illustrated in fig. 1, this implementation
Higher hamonic wave candidate's voltage vector that example also show under step S110, control two-phase rotating coordinate system is completed in presetting range
At least one times periodically variable implements process；And step S150, determine the specific reality of higher hamonic wave noise reduction voltage
Existing method.As shown in figure 3, the noise reduction voltage acquisition methods of the synchro wind generator include：
Higher hamonic wave candidate's voltage vector under S310, control two-phase rotating coordinate system completes at least one in presetting range
Secondary cyclically-varying.Step S310 content is similar to abovementioned steps S110 content.
Specifically, this gives the step S310 process that implements, including step S311~S312.
S311, gives the initial magnitude and starting phase angle of higher hamonic wave candidate's voltage vector, controls the first of higher hamonic wave
Beginning amplitude is constant, and starting phase angle completes cyclically-varying once in the presetting range of phase angle.
Specifically, in order to ensure initial higher hamonic wave candidate voltage vector to the vibration of generator or the influence of noise,
Initial magnitude can be set more larger, such as can be the specified harmonic voltage Un of generator, starting phase angle, which can appoint, to be taken, such as 0 °
Arbitrary value in 360 °.
During higher hamonic wave candidate voltage vector carries out cyclically-varying, the initial magnitude of higher hamonic wave can be first controlled
Constant, starting phase angle (such as 0 ° to 360 °) in the presetting range of phase angle completes cyclically-varying once.
In the change procedure, above-mentioned steps S120~S140 can be synchronously performed, is obtained with monitoring in each cycle, using most
Whole three-phase voltage set-point is injected into after synchro wind generator, the vibration of synchro wind generator or noise figure.
S312, with the cyclically-varying at phase angle, the minimum value pair in the vibration of synchro wind generator or noise figure
Answer phase angle constant as particular phase angle, control initial magnitude completes cyclically-varying once in amplitude presetting range.
Constant with initial magnitude in higher hamonic wave candidate's voltage vector, starting phase angle is carried out in the presetting range of phase angle
Mechanical periodicity during, extract the vibration of corresponding motor in each cycle or the minimum value in noise figure, and by the minimum value
Corresponding phase angle is constant as particular phase angle, controls above-mentioned initial magnitude in amplitude presetting range as 0 to 2%Un (for 5
Subharmonic voltage) or 0 to 1%Un (for 7 subharmonic voltages) complete cyclically-varying once., can in the change procedure
It is synchronous to perform step S120~S140, obtain the vibration of corresponding motor or noise figure in each cycle to monitor.
S320, judges that the periodicity whether higher hamonic wave candidate's voltage vector completes at least one times in presetting range becomes
Change, if S320 is judged as NO, continue executing with step S311 or step S312, the specific step that performs is waited with current higher hamonic wave
The cyclically-varying stage residing for voltage vector is selected to be defined, the phase angle variations stage as residing for when higher hamonic wave candidate's voltage vector
When, step S311 is performed, during residing amplitude changes phase, step S312 is performed.If S320 is judged as YES, step is performed
S330。
S330, will be constant with particular phase angle, and initial magnitude completes cyclically-varying once in amplitude presetting range
In, the corresponding amplitude of minimum value in the vibration of synchro wind generator or noise figure is labeled as amplitude and specific, and by specific width
The voltage vector that value and particular phase angle are constituted is used as the corresponding higher hamonic wave noise reduction voltage of synchro wind generator.Step
S330 can be considered step S150 refinement step.
Specifically, it is completed to based on higher hamonic wave candidate's voltage vector shown in step S311~S312 in presetting range
Few periodically variable specific change procedure once.The present embodiment is by the particular phase angle of above-mentioned determination and amplitude and specific structure
Into voltage vector be used as the corresponding higher hamonic wave noise reduction voltage of synchro wind generator.
Based on the acquisition methods of above-mentioned noise reduction voltage, it can be included：Quintuple harmonics candidate voltage vector, the seventh harmonic are waited
Select 5 times, 7 subharmonic noise reduction voltages corresponding at least one of voltage vector.
Further, when performing each single noise reduction voltage acquisition flow, the output work residing for generator can also be set
Rate section, so as to obtain synchro wind generator correspondence higher hamonic wave noise reduction voltage in each power output section.Described is defeated
It is the power section less than generator rating power to go out power section.
As shown in figure 4, exemplified by the noise reduction voltage acquisition methods of 5 subharmonic of the present embodiment to obtain generator, to Fig. 3 institutes
Show that method is described in detail.
Reference picture 4：Start single noise reduction voltage and obtain flow.
S410, gives the initial magnitude and starting phase angle of 5 subharmonic candidate's voltage vectors.
S420, constant with initial magnitude, starting phase angle changes 10 °；Specifically, starting phase angle can 0 ° to 360 ° it
Between circulation change, phase angle variations are at intervals of 10 degree.
S430, judges whether starting phase angle reaches designated value, and the designated value can characterize starting phase angle and complete once
0 ° to 360 ° of cyclically-varying.If step S430 is judged as YES, step S440 is performed；If step S430 is judged as NO,
It is back to step 420.
S440, records in the change procedure minimum Generator Vibration value or the corresponding phase angle of noise figure, and by its determination
For particular phase angle.
S450, it is constant with particular phase angle, initial magnitude is changed into 0.02%Un, wherein Un is the specified work(of generator
Rate；Specifically, initial magnitude can be gradually increased to the theoretical maximum amplitude of generator (for the theoretical maximum width of 5 subharmonic from 0
Value is about 2%Un).And amplitude change interval is 0.02%Un.
S460, judges whether amplitude change reaches maximum theoretical, and the maximum theoretical can characterize initial magnitude and complete
Cyclically-varying in threshold range.If step S460 is judged as YES, step 470 is performed；If step S460 is judged as
It is no, then it is back to step 450.
S470, it is amplitude and specific to record minimum Generator Vibration value or the corresponding amplitude of noise figure in the change procedure, and
The voltage vector that amplitude and specific and above-mentioned particular phase angle are constituted is defined as 5 subharmonic noise reduction voltages.
S480,10% is increased by the power output of generator.
S490 judges whether the power output of generator reaches rated power.If so, then this noise reduction voltage obtains flow
Terminate, and the noise reduction voltage acquisition methods of whole synchro wind generator terminate；If it is not, step S410 is then back to, to start
The single noise reduction voltage of next power output section obtains flow.
The noise reduction voltage acquisition methods of synchro wind generator provided in an embodiment of the present invention, implement in method shown in Fig. 1
On the basis of example, further show how to control the higher hamonic wave candidate voltage vector under two-phase rotating coordinate system in preset model
Enclose the periodically variable specific implementation of interior completion at least one times；And, determine the specific reality of higher hamonic wave noise reduction voltage
Existing process.Constant, the phase angle mechanical periodicity, to determine particular phases using the amplitude for first fixing higher hamonic wave candidate's voltage vector
Angle；Then, then constant with particular phase angle, amplitude cyclically-varying determines the mode of amplitude and specific, screening higher hamonic wave
Noise reduction voltage, implementation process is simple, quick, and the selection result is more accurate.
Embodiment three
The method flow diagram of the noise-reduction method one embodiment for the synchro wind generator that Fig. 5 provides for the present invention, the party
Method is based on the higher hamonic wave noise reduction voltage obtained in any methods described embodiment in earlier figures 1, Fig. 3 and Fig. 4 as input
Parameter, noise reduction process is carried out to synchro wind generator.As shown in figure 5, the noise-reduction method of the synchro wind generator includes step
It is rapid as follows：
S510, is three of corresponding higher hamonic wave under three-phase static coordinate system by the higher hamonic wave noise reduction voltage conversion of acquisition
Phase voltage injection value.
S520, the three-phase voltage for the fundamental wave that the three-phase voltage injection value of higher hamonic wave and pusher side circuit control device are given
After set-point correspondence superposition, itself and value are injected into synchronous wind-force by pusher side inverter as final three-phase voltage set-point and sent out
Motor.
The content of step S510~520 is corresponding with abovementioned steps S120~130 similar, specifically, can drop higher hamonic wave
Voltage of making an uproar is considered as higher hamonic wave candidate's voltage vector and calculated, and step principle is not repeated at this.
In concrete application scene, the higher hamonic wave noise reduction voltage such as 5 times and 7 times of acquisition can be separately injected into generating
Machine reaches noise reduction purpose, also can be by two higher hamonic wave noise reduction voltages while being injected into generator reaches more preferable noise reduction mesh
's.
As shown in fig. 6, present embodiment illustrates it is a kind of by the higher hamonic wave noise reduction voltage of 5 times and 7 times simultaneously be injected into hair
The noise-reduction method of the synchro wind generator of motor.In figure 6, power network 610, transformer 620, net side inverter 630, pusher side are inverse
Become the control system that device 640, wind-driven generator 650, impeller and main axis transmission system 670 together constitute Wind turbines.And this
The executive agent of method shown in embodiment is pusher side inverter 640.
Specifically, vibration or the noise figure of generator can periodically be monitored by vibration and noise transducer 660, and will
Detected value is sent into higher hamonic wave noise voltage acquisition device 680, and the higher hamonic wave noise reduction voltage acquisition apparatus 680 can be completed
The method and step of illustrated embodiment, obtains 5 times, 7 subharmonic noise reduction voltages as shown in Figure 1, Figure 3 and Figure 4.By 5 times of acquisition, 7 times it is humorous
Ripple noise reduction voltage vector Us5th、Us7thAnd corresponding phase angle θ5th、θ7thThe conversion of dq axle value components is carried out, to be converted into phase
Answer 5 times, d, q axle value component under the dq coordinate systems of 7 subharmonic：Ud5th、Uq5th、Ud7th、Uq7th.Then by obtained d, q axle value
Component is handled through dq/abc coordinate systems modular converter 690 again, obtains the three-phase voltage injection value under three-phase static coordinate system：
Ua5th、Ub5th、Uc5th；Ua7th、Ub7th、Uc7th.By the control arrow in the three-phase voltage injection value of 5 times, 7 times and former Wind turbines
The three-phase voltage set-point correspondence of the fundamental wave of quantity algorithm is added, itself and value Ua5th+Ua7th+Uaf、Ub5th+Ub7th+Ubf、Uc5th+Uc7th
+UcfIt is used as final three-phase voltage set-point Ua、Ub、UcModulated signal is generated through space vector pulse width modulation SVPWM algorithms, so
Synchro wind generator is injected into by pusher side inverter 640 afterwards.Wherein, generator amature in d, q axis coordinate system of fundamental wave
Angular position and angular velocity omega can be by detecting the electric current i of generator side a, b, c three-phase voltagea、ib、icAfterwards by without position
Sensing algorithm is obtained, and the algorithm is prior art, is not repeated.
The noise-reduction method of synchro wind generator provided in an embodiment of the present invention, based on being obtained in foregoing embodiments
Higher hamonic wave noise reduction voltage is completed, by that will obtain higher hamonic wave noise reduction voltage conversion into corresponding height under three-phase static coordinate system
The three-phase voltage injection value of subharmonic, and be superimposed upon on the three-phase voltage set-point of original fundamental wave, it is injected into generator, from
And reach the purpose of noise reduction.
Example IV
The structural representation of the noise reduction voltage acquisition apparatus one embodiment for the synchro wind generator that Fig. 7 provides for the present invention
Figure, available for perform Fig. 1, Fig. 3, embodiment illustrated in fig. 4 method and step, as shown in fig. 7, the noise reduction of the synchro wind generator
Voltage acquisition apparatus 680 includes：Start control module 710, periodic Control module 720, the first shift control module 730, first
Summation injection module 740, monitoring modular 750 and noise reduction voltage determination module 760.
Start control module 710, flow is obtained for starting single noise reduction voltage；Periodic Control module 720, in list
Higher hamonic wave candidate's voltage vector that secondary noise reduction voltage is obtained in flow under control two-phase rotating coordinate system is complete in presetting range
Into cyclically-varying at least one times；First shift control module 730, for obtaining flow in single noise reduction voltage in by each week
Higher hamonic wave candidate voltage vector is converted to the three-phase voltage injection value of corresponding higher hamonic wave under three-phase static coordinate system in phase；
First summation injection module 740, for single noise reduction voltage obtain flow in by the three-phase voltage injection value of higher hamonic wave with
After the three-phase voltage set-point correspondence superposition of the given fundamental wave of pusher side circuit control device, itself and value are used as final three-phase voltage
Set-point is injected into synchro wind generator by pusher side inverter；Monitoring modular 750, final three-phase electricity is used for monitoring
Pressure set-point is injected into after synchro wind generator, the vibration of synchro wind generator or noise figure；Noise reduction voltage determination module
760, for obtaining flow in single noise reduction voltage in by each cycle, in the vibration of synchro wind generator or noise figure most
The corresponding higher hamonic wave candidate voltage vector of small value is used as the corresponding higher hamonic wave noise reduction voltage of synchro wind generator.
On this basis, above-mentioned periodic Control module 720, may also include：Period 1 control unit, for giving high order
The initial magnitude and starting phase angle of harmonic wave candidate's voltage vector, control the initial magnitude of higher hamonic wave constant, starting phase angle
Cyclically-varying once is completed in the presetting range of phase angle；Second round control unit, with the cyclically-varying at phase angle
In, the minimum value corresponding phase angle in the vibration of synchro wind generator or noise figure is constant as particular phase angle, and control is just
Beginning amplitude completes cyclically-varying once in amplitude presetting range.
Further, above-mentioned noise reduction voltage determination module 760, it may also be used for will be constant with particular phase angle, initial magnitude
Completed in amplitude presetting range in cyclically-varying once, the minimum value in the vibration of synchro wind generator or noise figure
Corresponding amplitude is labeled as amplitude and specific, and the voltage vector that amplitude and specific and particular phase angle are constituted is used as synchronous wind-force
The corresponding higher hamonic wave noise reduction voltage of generator.
Further, above-mentioned higher hamonic wave candidate voltage vector includes：Quintuple harmonics candidate voltage vector, the seventh harmonic are waited
Select at least one of voltage vector.
Further, above-mentioned startup control module 710, it may also be used for less than its specified work(at synchro wind generator
During each preset power output section of rate, single noise reduction voltage is respectively started and obtains flow, is existed with obtaining synchro wind generator
Corresponding higher hamonic wave noise reduction voltage in each power output section.
The noise reduction voltage acquisition apparatus of synchro wind generator provided in an embodiment of the present invention, by by two cordic phase rotators
The lower higher hamonic wave candidate voltage vector of system completes cyclically-varying at least one times in its presetting range, and in each period of change
Inside be translated into higher hamonic wave three-phase voltage injection value and fundamental wave three-phase voltage set-point it is co-implanted to generator；Electricity
After pressure injection enters, the corresponding higher hamonic wave candidate voltage vector of minimum value in the vibration of screening generator or noise figure is as corresponding
Higher hamonic wave noise reduction voltage.This programme injects suitable amplitude to generator end by pusher side inverter and phase angle high order is humorous
Wave voltage, to balance out harmonic voltage component in generator induced electromotive force, so that induced electromotive force is more sinusoidal, and then
So that dynamo current is more sinusoidal, so that Generator Vibration and noise caused by harmonic carcellation torque, extension generator are used
Life-span.
Embodiment five
The structural representation of the denoising device one embodiment for the synchro wind generator that Fig. 8 provides for the present invention, can be used
In perform Fig. 5, embodiment illustrated in fig. 6 method and step, as shown in figure 8, the denoising device 800 of the synchro wind generator with such as
The higher hamonic wave noise reduction voltage acquisition apparatus 680 of synchro wind generator shown in Fig. 7 is connected, the synchro wind generator
Denoising device includes：Second shift control module 810 and the second summation injection module 820.
Second shift control module 810, for by the higher hamonic wave noise reduction voltage acquisition apparatus 680 of synchro wind generator
The higher hamonic wave noise reduction voltage conversion finally given is the three-phase voltage injection of corresponding higher hamonic wave under three-phase static coordinate system
Value；Second summation injection module 820, for by the three-phase voltage injection value of the corresponding higher hamonic wave of higher hamonic wave noise reduction voltage with
After the three-phase voltage set-point correspondence superposition of the given fundamental wave of pusher side circuit control device, itself and value are used as final three-phase voltage
Set-point is injected into the synchro wind generator by pusher side inverter.
The denoising device of synchro wind generator provided in an embodiment of the present invention, is based on the height obtained in previous embodiment
Subharmonic noise reduction voltage is completed, by that will obtain higher hamonic wave noise reduction voltage conversion into corresponding high order under three-phase static coordinate system
The three-phase voltage injection value of harmonic wave, and be superimposed upon on the three-phase voltage set-point of original fundamental wave, it is injected into generator, so that
Reach the purpose of noise reduction.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, or which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a kind of noise reduction voltage acquisition methods of synchro wind generator, it is characterised in that including：Start single noise reduction voltage to obtain
Flow is taken, the single noise reduction voltage, which obtains flow, to be included：
Higher hamonic wave candidate's voltage vector under control two-phase rotating coordinate system completes the cycle at least one times in presetting range
Property change；
The higher hamonic wave candidate voltage vector in each cycle is converted into corresponding high order under three-phase static coordinate system humorous
The three-phase voltage injection value of ripple；
The three-phase voltage for the fundamental wave that the three-phase voltage injection value of the higher hamonic wave is given with pusher side circuit control device gives
After value correspondence superposition, itself and value are injected into the synchronous wind-force by pusher side inverter as final three-phase voltage set-point and sent out
Motor；
Monitoring is injected into after the synchro wind generator using the final three-phase voltage set-point, the synchronous wind-force hair
The vibration of motor or noise figure；
By in each cycle, the corresponding higher hamonic wave of minimum value in the vibration of the synchro wind generator or noise figure is waited
Voltage vector is selected as the corresponding higher hamonic wave noise reduction voltage of the synchro wind generator；
Wherein, higher hamonic wave candidate's voltage vector under the control two-phase rotating coordinate system completes at least one in presetting range
Secondary cyclically-varying includes：
The initial magnitude and starting phase angle of the higher hamonic wave candidate voltage vector are given, the initial of the higher hamonic wave is controlled
Amplitude is constant, and starting phase angle completes cyclically-varying once in the presetting range of phase angle；Then,
So that in the cyclically-varying at the phase angle, the minimum value in the vibration of the synchro wind generator or noise figure is corresponding
Phase angle is constant as particular phase angle, and the periodicity for controlling the initial magnitude to be completed in amplitude presetting range once becomes
Change.
2. according to the method described in claim 1, it is characterised in that described by each cycle, the synchro wind generator
The corresponding higher hamonic wave candidate voltage vector of minimum value in vibration or noise figure is used as the synchro wind generator phase
The higher hamonic wave noise reduction voltage answered includes：
Will be constant with the particular phase angle, the periodicity that the initial magnitude completes once in the amplitude presetting range becomes
In change, the corresponding amplitude of minimum value in the vibration of the synchro wind generator or noise figure is labeled as amplitude and specific, and will
The voltage vector that the amplitude and specific and the particular phase angle are constituted is used as the corresponding high order of the synchro wind generator
Harmonic wave noise reduction voltage.
3. method according to claim 1 or 2, it is characterised in that the higher hamonic wave candidate voltage vector includes：Five times
At least one of harmonic wave candidate voltage vector, the seventh harmonic candidate's voltage vector.
4. method according to claim 3, it is characterised in that methods described also includes：
At the synchro wind generator in each preset power output section less than its rated power, it is respectively started described
Single noise reduction voltage obtains flow, to obtain synchro wind generator correspondence high order in each power output section
Harmonic wave noise reduction voltage.
5. a kind of noise-reduction method of synchro wind generator, it is characterised in that including：
To be described by the higher hamonic wave noise reduction voltage conversion that any methods described is obtained in the claim 1-4
The three-phase voltage injection value of corresponding higher hamonic wave under three-phase static coordinate system；
The three-phase voltage for the fundamental wave that the three-phase voltage injection value of the higher hamonic wave is given with pusher side circuit control device gives
After value correspondence superposition, itself and value are injected into the synchronous wind-force by pusher side inverter as final three-phase voltage set-point and sent out
Motor.
6. a kind of noise reduction voltage acquisition apparatus of synchro wind generator, it is characterised in that including：
Start control module, flow is obtained for starting single noise reduction voltage；
Periodic Control module, for controlling the high order under two-phase rotating coordinate system humorous in obtaining flow in the single noise reduction voltage
Wave climate selects voltage vector to complete cyclically-varying at least one times in presetting range；
First shift control module, in single noise reduction voltage acquisition flow that the high order in each cycle is humorous
Wave climate selects voltage vector to be converted to the three-phase voltage injection value of corresponding higher hamonic wave under three-phase static coordinate system；
First summation injection module, for obtaining flow in the single noise reduction voltage in by the three-phase voltage of the higher hamonic wave
After the corresponding superposition of the three-phase voltage set-point of the fundamental wave that injection value and pusher side circuit control device give, itself and value are as finally
Three-phase voltage set-point is injected into the synchro wind generator by pusher side inverter；
Monitoring modular, is injected into after the synchro wind generator for monitoring using the final three-phase voltage set-point,
The vibration of the synchro wind generator or noise figure；
Noise reduction voltage determination module, for obtaining flow in the single noise reduction voltage in by each cycle, the synchronous wind-force
The corresponding higher hamonic wave candidate voltage vector of minimum value in the vibration of generator or noise figure is used as the synchronous wind-force
The corresponding higher hamonic wave noise reduction voltage of generator；
Wherein, the periodic Control module, including：
Period 1 control unit, initial magnitude and starting phase angle for giving the higher hamonic wave candidate voltage vector,
Control the initial magnitude of the higher hamonic wave constant, the periodicity that starting phase angle completes once in the presetting range of phase angle becomes
Change；
Second round control unit, for in the cyclically-varying at the phase angle, the vibration of the synchro wind generator
Or the minimum value corresponding phase angle in noise figure is constant as particular phase angle, the initial magnitude is controlled in amplitude presetting range
The cyclically-varying of interior completion once.
7. device according to claim 6, it is characterised in that the noise reduction voltage determination module, specifically for：
Will be constant with the particular phase angle, the periodicity that the initial magnitude completes once in the amplitude presetting range becomes
In change, the corresponding amplitude of minimum value in the vibration of the synchro wind generator or noise figure is labeled as amplitude and specific, and will
The voltage vector that the amplitude and specific and the particular phase angle are constituted is used as the corresponding high order of the synchro wind generator
Harmonic wave noise reduction voltage.
8. the device according to claim 6 or 7, it is characterised in that the higher hamonic wave candidate voltage vector includes：Five times
At least one of harmonic wave candidate voltage vector, the seventh harmonic candidate's voltage vector.
9. device according to claim 8, it is characterised in that the startup control module, is additionally operable to：
At the synchro wind generator in each preset power output section less than its rated power, it is respectively started described
Single noise reduction voltage obtains flow, to obtain synchro wind generator correspondence high order in each power output section
Harmonic wave noise reduction voltage.
10. a kind of denoising device of synchro wind generator, it is characterised in that the denoising device of the synchro wind generator with
The noise reduction voltage acquisition apparatus connection of synchro wind generator as any one of claim 6-9, the synchronous wind-force
The denoising device of generator includes the second shift control module and the second summation injection module；
Second shift control module, for finally give the noise reduction voltage acquisition apparatus of the synchro wind generator
The higher hamonic wave noise reduction voltage conversion is the three-phase voltage injection value of corresponding higher hamonic wave under the three-phase static coordinate system；
The second summation injection module, for by the three-phase electricity of the corresponding higher hamonic wave of the higher hamonic wave noise reduction voltage
Pressure injection enters after value superposition corresponding with the three-phase voltage set-point for the fundamental wave that pusher side circuit control device gives, and itself and value are as final
Three-phase voltage set-point the synchro wind generator is injected into by pusher side inverter.
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| EP3571761B1 (en) * | 2017-02-21 | 2023-09-27 | Siemens Gamesa Renewable Energy A/S | Controlling a wind turbine generator |
| CN107453675B (en) * | 2017-07-24 | 2020-07-03 | 广东美的暖通设备有限公司 | Motor control method and device, air conditioner and storage medium |
| CN107425778B (en) * | 2017-07-24 | 2020-07-03 | 广东美的暖通设备有限公司 | Motor control method and device, air conditioner and storage medium |
| CN107425779B (en) * | 2017-07-24 | 2020-07-03 | 广东美的暖通设备有限公司 | Motor control method and device, air conditioner and storage medium |
| CN107241048B (en) * | 2017-07-24 | 2020-07-03 | 广东美的暖通设备有限公司 | Motor control method and device, air conditioner and storage medium |
| CN108199628B (en) * | 2017-12-12 | 2020-04-24 | 青岛海尔空调器有限总公司 | Method and device for processing motor resonance noise |
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