CN107975458A - A kind of analogy method of the wind energy conversion system Flexible Transmission characteristic based on torque closed-loop control - Google Patents
A kind of analogy method of the wind energy conversion system Flexible Transmission characteristic based on torque closed-loop control Download PDFInfo
- Publication number
- CN107975458A CN107975458A CN201711120214.2A CN201711120214A CN107975458A CN 107975458 A CN107975458 A CN 107975458A CN 201711120214 A CN201711120214 A CN 201711120214A CN 107975458 A CN107975458 A CN 107975458A
- Authority
- CN
- China
- Prior art keywords
- mrow
- msub
- torque
- energy conversion
- wind energy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 73
- 230000005540 biological transmission Effects 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000004088 simulation Methods 0.000 claims abstract description 39
- 230000033001 locomotion Effects 0.000 claims abstract description 19
- 230000009466 transformation Effects 0.000 claims abstract description 5
- 230000005611 electricity Effects 0.000 claims 1
- 230000003068 static effect Effects 0.000 abstract description 4
- 238000002474 experimental method Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 230000001052 transient effect Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005094 computer simulation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000005662 electromechanics Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
-
- 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
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
-
- 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
-
- 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
- F05B2260/84—Modelling or simulation
-
- 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
- F05B2270/10—Purpose of the control system
- F05B2270/103—Purpose of the control system to affect the output of the engine
- F05B2270/1032—Torque
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention discloses a kind of analogy method of the wind energy conversion system Flexible Transmission characteristic based on torque closed-loop control, including：Two mass block equivalent models are established, consider the coefficient of elasticity and damped coefficient of high speed shaft, establish the equation of motion of Flexible Transmission model when generator is connected with wind energy conversion system；Establish the equation of motion that generator is connected with simulated machine；Machine torque, the rotating speed for the stiff shaft transmission that generator is connected with simulated machine, machine torque, the rotating speed of its high speed shaft transmission are equal when should be connected with generator and wind energy conversion system substitutes into the equation of motion established by condition and carries out Laplace transformation, equation with three unknowns group is obtained, and real-time resolving obtains simulated machine torque and is used as torque reference value；Torque closed-loop control is carried out to simulated machine group, simulated machine torque reference value is followed in real time to reappear the torque, realizes the simulation of Flexible Transmission wind-force dynamics.The present invention can more accurately make laboratory simulation motor reappear the static and dynamic performance of actual wind energy conversion system Flexible Transmission.
Description
Technical field
The present invention relates to a kind of analogy method of the wind energy conversion system Flexible Transmission characteristic based on torque closed-loop control, belong to permanent magnetism
The technical field of motor control.
Background technology
The torque/speed characteristic that wind energy conversion system simulation system is exported using the true wind field environment apparatus for lower wind machine of electromotor simulation,
To drive wind-driven generator to run.Limited since simulation system experiment is low compared to the cost of wind field experiment, and from natural environment,
Experiment condition can be flexibly set, drastically increases Efficiency, strong guarantor is provided for the birth and application of new technology
Barrier, therefore wind energy conversion system simulation system becomes the basis that wind generating technology research is carried out under laboratory environment.Existing wind energy conversion system
Simulation system is limited be subject to experiment condition and experiment safety, is usually all simulated using low power motor low power
Wind energy conversion system, and since the mechanical time constant of small-power wind energy conversion system in itself is less than high-power MW grades of wind energy conversion system so that it is to wind speed
High-power wind mill will be significantly faster than that with the response speed of load change, therefore in the simulation designed for small-power wind energy conversion system
When master control system is developed in system, obtained control parameter is difficult to directly apply to high-power wind turbine unit.
To make simulation system experiment not only need simulation system to be exported in stable state closer to the experimental conditions of actual wind field
The due torque of real system and power characteristic, with greater need in wind speed or load disturbance, reappear real system dynamic torque,
Rotation speed change process.Comparatively speaking, the simulation of steady-state characteristic is easier to, but the reproduction of Dynamic Speed change procedure then will be complicated
It is more.It is more using rigid transmission system as simulated object that the Dynamic Simulation technology of report is seen at present, emphasis solution wind energy conversion system
The Dynamic Speed difference problem brought with motor rotation inertia difference, have ignored the elastic deformation of transmission shaft.But work as wind-force
There are during step-up gear in the transmission system of machine and generator, driving-chain certainly exists certain between wind energy conversion system and generator
Flexibility, Flexible Transmission will produce the torque oscillation in unit transient process, transient stability of this characteristic for Wind turbines
Property has large effect, can change transient process duration and the transient stability margin of unit.
In addition, in terms of wind energy conversion system Dynamic Simulation strategy, the method typically now used has the mould of velocity close-loop control
Intend strategy, directly with Dynamic Speed target in order to control, high requirement, Er Qie not only are proposed to simulated machine speed loop bandwidth
Real-time Feedback generator torque is needed when resolving the equation of motion, causes to lack independence between simulated machine and generator, these
Problem all limits the popularization and use of speed closed loop simulation strategy.
The content of the invention
The technical problems to be solved by the invention are that overcoming the deficiencies of the prior art and provide one kind is based on torque closed loop control
The analogy method of the wind energy conversion system Flexible Transmission characteristic of system, solves to ignore flexible in existing simulation and simply regard transmission shaft as
Rigidity carries out Wind turbines simulation, the problem of by larger simulation error is brought.Wind energy conversion system of the invention by Flexible Transmission characteristic
Simulation is combined with torque closed-loop simulation strategy, using the method for parameter contracting ratio, more accurately reappears laboratory simulation motor
Go out the stable state and transient characterisitics of actual high-power wind mill.
It is of the invention that above-mentioned technical problem is specifically solved using following technical scheme：
A kind of analogy method of the wind energy conversion system Flexible Transmission characteristic based on torque closed-loop control, comprises the following steps：
Step 1, establish by wind energy conversion system and gear-box, generating set into mass block equivalent model；Hair will be connected in model
The transmission shaft of motor and wind energy conversion system is as high speed shaft and considers its coefficient of elasticity and damped coefficient, establishes generator and connects with wind energy conversion system
The equation of motion of Flexible Transmission model when connecing；
It is step 2, the simulated machine and generator that are selected according to generator speed scope is coaxially connected by stiff shaft, build
Equation of motion when vertical generator is connected with simulated machine；
Step 3, the machine torque that the stiff shaft is transmitted, rotating speed should be with mass block equivalent model high speed axis transmission
Equal machine torque, rotating speed are condition, substitute into the equation of motion that step 1 and step 2 are established and simultaneously carry out Laplace transformation, obtain on
Torque and the equation with three unknowns group of rotating speed, and the real-time resolving equation with three unknowns group obtains simulated machine torque and is used as torque reference
Value；
Step 4, carry out torque closed-loop control to simulated machine, follows simulated machine torque reference value to reappear this turn in real time
Square, realizes the simulation of Flexible Transmission wind-force dynamics.
Further, as a preferred technical solution of the present invention：The generator that the step 1 is established connects with wind energy conversion system
The equation of motion of Flexible Transmission model when connecing is：
Wherein, Ω 'wtFor the high speed shaft reduced value of wind energy conversion system rotating speed；ΩgFor generator speed, i.e. high speed rotating speed；θ′wt
Value after being converted for wind energy conversion system mechanical angle toward high speed shaft；θgFor the mechanical angle of generator amature, and two angles and machinery
Rotating speed meets relation：dθ′wt/ dt=Ω 'wt, d θg/ dt=Ωg；J′wt、B′wtConverted for wind energy conversion system rotary inertia and friction coefficient
To the value of high speed shaft；Jg、BgFor generator rotary inertia and friction coefficient；T′wtFor wind energy conversion system pneumatic torque conversion to high speed shaft
Value；TgFor generator torque；Ktg、BtgRepresent the coefficient of elasticity and damped coefficient of high speed shaft；Ths_wtFor the machine of high speed shaft transmission
Tool torque.
Further, as a preferred technical solution of the present invention：The generator and simulated machine that the step 2 is established
Equation of motion during connection is：
Wherein, Ths_m、ΩmThe machine torque and rotating speed of stiff shaft transmission when being connected for generator with simulated machine；TemFor
Simulated machine electromagnetic torque；Bm、JmFor simulated machine friction coefficient and rotary inertia；Jg、BgFor generator rotary inertia and friction
Coefficient；TgFor generator torque.
Further, as a preferred technical solution of the present invention：The machinery of stiff shaft transmission described in the step 3
Torque, rotating speed should be equal with machine torque, the rotating speed of mass block equivalent model high speed axis transmission, are specially：
Ths_m=Ths_wt=Ths
Ωm=Ωg=Ω
Wherein, Ths_mAnd ΩmMachine torque, the rotating speed of stiff shaft transmission, T are represented respectivelyhs_wtAnd ΩgPower generation is represented respectively
Machine
The machine torque of its high speed shaft transmission, rotating speed when being connected with wind energy conversion system；ThsRefer to machine torque, rotating speed with Ω.
Further, as a preferred technical solution of the present invention：The step 3 obtains three on torque and rotating speed
First equation group, is specially：
Wherein, Ω 'wtFor the high speed shaft reduced value of wind energy conversion system rotating speed；T′wtFor wind energy conversion system pneumatic torque conversion to high speed shaft
Value；J′wt、B′wtThe value to high speed shaft is converted for wind energy conversion system rotary inertia and friction coefficient；Ktg、BtgRepresent the elasticity of high speed shaft
Coefficient and damped coefficient；TemFor simulated machine electromagnetic torque；Bm、JmFor simulated machine friction coefficient and rotary inertia；ThsAnd Ω
For the value in previous step, s is Laplace operator.
The present invention uses above-mentioned technical proposal, can produce following technique effect：
Torque closed-loop simulation method of the present invention, is unfolded mainly for the rotary inertia difference of wind energy conversion system and motor
Research, the motor torque produced needed for desired speed is directly calculated by certain algorithm, then speed ring can be omitted, so that simple
Change the control of simulated machine, but existing research is mostly the situation based on rigid shaft, the wind of the invention by Flexible Transmission characteristic
The simulation of power machine is combined with torque closed-loop simulation strategy, laboratory simulation motor is reappeared the dynamic of actual wind energy conversion system
Static characteristic.
This analogy method considers the flexible characteristic of transmission shaft in actual set, the transmission shaft of simulation unit is shown and reality
The consistent torsional oscillation characteristic of border unit, solves to ignore flexible in existing simulation and simply regard transmission shaft as rigid progress
Wind turbines are simulated, the problem of by larger simulation error is brought.
Brief description of the drawings
Fig. 1 is the wind energy conversion system Flexible Transmission system for simulating feature block diagram of the invention based on torque closed-loop control.
Fig. 2 (a) is 2 mass block equivalent model figures of the invention；Fig. 2 (b) is to lean on high speed axis connection between two mass blocks of the invention
Schematic diagram.
Fig. 3 is simulated machine and generator connection figure in the present invention.
Embodiment
Embodiments of the present invention are described with reference to Figure of description.
The present invention proposes a kind of analogy method of the wind energy conversion system Flexible Transmission characteristic based on torque closed-loop control, this method institute
The wind energy conversion system Flexible Transmission system for simulating feature of use is as shown in Figure 1, servo-actuated including model and simulation strategy part, electromechanics
Part and three parts of generator and generator control, wherein model and simulation strategy part are modeled including Wind speed model, wind-force
Machine torque model models and torque referenceCalculate three parts；Electromechanical phantom element includes torque closed loop control module, drives
Dynamic model block, three-phase full bridge converters and simulated machine etc..
Shown in the analogy method schematic diagram 1 of the present invention, following steps are specifically included：
Step 1, with reference to actual set characteristic, as wind energy conversion system and gear-box are equivalent to a mass block, generator by Fig. 2 (a)
Another mass block is equivalent to, establishes 2 mass block equivalent models of actual set, by being driven axis connection between two mass blocks, and should
Transmission shaft shown in its structure such as Fig. 2 (b), considers the coefficient of elasticity K of actual set high speed shaft as high speed shafttgAnd damped coefficient
Btg, the equation of motion of Flexible Transmission model when generator is connected with wind energy conversion system is established, is driven flexible then equivalent at a high speed
Axis, compared with stiff shaft, adds high speed shaft coefficient of elasticity KtgWith transmission shaft friction coefficient Btg。
The coefficient of elasticity K of combination wind energy conversion system and generator the unit high speed axistgWith damped coefficient Btg, the hair of foundation
The equation of motion of Flexible Transmission model when motor is connected with actual wind energy conversion system is：
Equation group is obtained by Laplace transformation and after exchanging equation order：
Wherein, Ω 'wtFor the high speed shaft reduced value of wind energy conversion system rotating speed；ΩgFor generator speed, i.e. high speed rotating speed；θ′wt
Value after being converted for wind energy conversion system mechanical angle toward high speed shaft；θgFor the mechanical angle of generator amature, and two angles and machinery
Rotating speed meets relation：dθ′wt/ dt=Ω 'wt, d θg/ dt=Ωg；J′wt、B′wtConverted for wind energy conversion system rotary inertia and friction coefficient
To the value of high speed shaft；Jg、BgFor generator rotary inertia and friction coefficient；T′wtFor wind energy conversion system pneumatic torque conversion to high speed shaft
Value；TgFor generator torque；Ktg、BtgRepresent the coefficient of elasticity and damped coefficient of high speed shaft；Ths_wtFor the machine of high speed shaft transmission
Tool torque, s are Laplace operator.
Step 2, the simulated machine and generator that are selected according to generator speed scope is coaxially connected by stiff shaft, hair
Motor is connected with simulated machine as shown in figure 3, establishing the movement of simulated machine and generator when generator is connected with simulated machine
Equation.Specially：
Wherein, Ths_m、ΩmThe machine torque and rotating speed of stiff shaft transmission when being connected for generator with simulated machine；TemFor
Simulated machine electromagnetic torque；Bm、JmFor simulated machine friction coefficient and rotary inertia；Jg、BgFor generator rotary inertia and friction
Coefficient；TgFor generator torque.
Step 3, be to ensure that the machine torque of real system and simulation system transmission shaft transmission is equal, makes the biography of simulation unit
Moving axis shows the torsional oscillation consistent with actual set, that is, when being simulated, when setting generator is connected with simulated machine, its
The machine torque T of stiff shaft transmissionhs_m, rotating speed Ωm, the machine torque of high speed shaft transmission when should be connected with generator and wind energy conversion system
Ths_wt, rotating speed ΩgEqual, its value is respectively：
Ths_m=Ths_wt=Ths
Ωm=Ωg=Ω (4)
Wherein, ThsRefer to machine torque, rotating speed with Ω.
Then, the formula (4) of the setting condition is substituted into Flexible Transmission model sport when generator is connected with wind energy conversion system
The equation of motion (3) when equation (1) is connected with generator with simulated machine simultaneously carries out Laplace transformation, obtains on Ω 'wt、Ths、
TemEquation with three unknowns group it is as follows：
Also, the real-time resolving equation with three unknowns group (5), can obtain simulated machine torque TemAnd it is used as torque reference value
And the formula according to equation with three unknowns group (5)：
Tem=Ths_m+(Jms+Bm)Ωm (6)
And simulated machine and generator meet equation：
Tem-Tg=[(Jm+Jg)s+(Bm+Bg)]Ωm (7)
Simultaneous two above equation (6) and (7), obtain the torque T on simulation unit transmission shafths_mMeet：
Ths_m-Tg=(Jgs+Bg)Ωm (8)
And understood according to equation with three unknowns group (5)：
Ths_m=(Btg+Ktg/s)(Ω'wt-Ωm)
Ω'wt=(T'wt-Ths_m)/(J'wts+B'wt) (9)
Generating unit speed is simulated and mathematical relationship that torque is shown to be carried under simulation strategy in the equation group (8), (9).
Step 4, the simulated machine carry out torque closed-loop control, follow simulated machine torque reference value in real timeWith reproduction
The torque, realizes the simulation of Flexible Transmission wind-force dynamics.
The equation of motion of Flexible Transmission model when the formula (2) of the step 1 is generator and wind energy conversion system connection and side
Rotating speed when journey group (7), the generator of (8) simultaneous are connected with simulated machine is consistent with torque relationship form.Then in phase
Under same input, identical output valve can be obtained, simulation unit can reappear the static and dynamic performance of actual wind energy conversion system, illustrate this hair
Bright carried analogy method is feasible, correct.
To sum up, torque closed-loop simulation method of the present invention, it is poor mainly for the rotary inertia of wind energy conversion system and motor
Different expansion research, the motor torque produced needed for desired speed is directly calculated by certain algorithm, then can omit speed ring,
So as to simplify the control of simulated machine, the wind energy conversion system of Flexible Transmission characteristic is simulated and is combined with torque closed-loop simulation strategy, more
Laboratory simulation motor is reappeared the static and dynamic performance of actual wind energy conversion system exactly, realize the mould of Flexible Transmission feature of wind machine
Intend.
Embodiments of the present invention are explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned implementation
Mode, within the knowledge of a person skilled in the art, can also be on the premise of present inventive concept not be departed from
Make a variety of changes.
Claims (5)
1. a kind of analogy method of the wind energy conversion system Flexible Transmission characteristic based on torque closed-loop control, it is characterised in that including following
Step：
Step 1, establish by wind energy conversion system and gear-box, generating set into mass block equivalent model；Generator will be connected in model
As high speed shaft and its coefficient of elasticity and damped coefficient are considered with the transmission shaft of wind energy conversion system, when establishing generator and being connected with wind energy conversion system
Flexible Transmission model the equation of motion；
Step 2, the simulated machine and generator that are selected according to generator speed scope is coaxially connected by stiff shaft, foundation hair
Equation of motion when motor is connected with simulated machine；
Step 3, the machine torque that the stiff shaft is transmitted, rotating speed should be with the machineries of mass block equivalent model high speed axis transmission
Torque, equal rotating speed are condition, substitute into the equation of motion that step 1 and step 2 are established and carry out Laplace transformation, obtain on torque
With the equation with three unknowns group of rotating speed, and the real-time resolving equation with three unknowns group obtains simulated machine torque and is used as torque reference value；
Step 4, carry out torque closed-loop control to simulated machine, follows simulated machine torque reference value in real time to reappear the torque,
Realize the simulation of Flexible Transmission wind-force dynamics.
2. the analogy method of the wind energy conversion system Flexible Transmission characteristic based on torque closed-loop control according to claim 1, its feature
It is：The equation of motion of Flexible Transmission model is when the generator that the step 1 is established is connected with wind energy conversion system：
<mfenced open = "{" close = "">
<mtable>
<mtr>
<mtd>
<mrow>
<msub>
<msup>
<mi>J</mi>
<mo>&prime;</mo>
</msup>
<mrow>
<mi>w</mi>
<mi>t</mi>
</mrow>
</msub>
<mfrac>
<mrow>
<msub>
<msup>
<mi>d&Omega;</mi>
<mo>&prime;</mo>
</msup>
<mrow>
<mi>w</mi>
<mi>t</mi>
</mrow>
</msub>
</mrow>
<mrow>
<mi>d</mi>
<mi>t</mi>
</mrow>
</mfrac>
<mo>=</mo>
<msub>
<msup>
<mi>T</mi>
<mo>&prime;</mo>
</msup>
<mrow>
<mi>w</mi>
<mi>t</mi>
</mrow>
</msub>
<mo>-</mo>
<msub>
<msup>
<mi>B</mi>
<mo>&prime;</mo>
</msup>
<mrow>
<mi>w</mi>
<mi>t</mi>
</mrow>
</msub>
<msub>
<msup>
<mi>&Omega;</mi>
<mo>&prime;</mo>
</msup>
<mrow>
<mi>w</mi>
<mi>t</mi>
</mrow>
</msub>
<mo>-</mo>
<msub>
<mi>T</mi>
<mrow>
<mi>h</mi>
<mi>s</mi>
<mo>_</mo>
<mi>w</mi>
<mi>t</mi>
</mrow>
</msub>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<msub>
<mi>T</mi>
<mrow>
<mi>h</mi>
<mi>s</mi>
<mo>_</mo>
<mi>w</mi>
<mi>t</mi>
</mrow>
</msub>
<mo>=</mo>
<msub>
<mi>B</mi>
<mrow>
<mi>t</mi>
<mi>g</mi>
</mrow>
</msub>
<mrow>
<mo>(</mo>
<msub>
<msup>
<mi>&Omega;</mi>
<mo>&prime;</mo>
</msup>
<mrow>
<mi>w</mi>
<mi>t</mi>
</mrow>
</msub>
<mo>-</mo>
<msub>
<mi>&Omega;</mi>
<mi>g</mi>
</msub>
<mo>)</mo>
</mrow>
<mo>+</mo>
<msub>
<mi>K</mi>
<mrow>
<mi>t</mi>
<mi>g</mi>
</mrow>
</msub>
<mrow>
<mo>(</mo>
<msub>
<msup>
<mi>&theta;</mi>
<mo>&prime;</mo>
</msup>
<mrow>
<mi>w</mi>
<mi>t</mi>
</mrow>
</msub>
<mo>-</mo>
<msub>
<mi>&theta;</mi>
<mi>g</mi>
</msub>
<mo>)</mo>
</mrow>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<msub>
<mi>J</mi>
<mi>g</mi>
</msub>
<mfrac>
<mrow>
<msub>
<mi>d&Omega;</mi>
<mi>g</mi>
</msub>
</mrow>
<mrow>
<mi>d</mi>
<mi>t</mi>
</mrow>
</mfrac>
<mo>=</mo>
<msub>
<mi>T</mi>
<mrow>
<mi>h</mi>
<mi>s</mi>
<mo>_</mo>
<mi>w</mi>
<mi>t</mi>
</mrow>
</msub>
<mo>-</mo>
<msub>
<mi>B</mi>
<mi>g</mi>
</msub>
<msub>
<mi>&Omega;</mi>
<mi>g</mi>
</msub>
<mo>-</mo>
<msub>
<mi>T</mi>
<mi>g</mi>
</msub>
</mrow>
</mtd>
</mtr>
</mtable>
</mfenced>
Wherein, Ω 'wtFor the high speed shaft reduced value of wind energy conversion system rotating speed；ΩgFor generator speed, i.e. high speed rotating speed；θ′wtFor wind
Power machine mechanical angle toward high speed shaft convert after value；θgFor the mechanical angle of generator amature, and two angles and mechanical separator speed
Meet relation：dθ′wt/ dt=Ω 'wt, d θg/ dt=Ωg；J′wt、B′wtConverted for wind energy conversion system rotary inertia and friction coefficient to height
The value of fast axis；Jg、BgFor generator rotary inertia and friction coefficient；T′wtFor the value of wind energy conversion system pneumatic torque conversion to high speed shaft；
TgFor generator torque；Ktg、BtgRepresent high speed shaft coefficient of elasticity and damped coefficient；Ths_wtFor the machine torque of high speed shaft transmission.
3. the analogy method of the wind energy conversion system Flexible Transmission characteristic based on torque closed-loop control according to claim 1, its feature
It is：The equation of motion when generator that the step 2 is established is connected with simulated machine is：
<mrow>
<msub>
<mi>T</mi>
<mrow>
<mi>h</mi>
<mi>s</mi>
<mo>_</mo>
<mi>m</mi>
</mrow>
</msub>
<mo>=</mo>
<msub>
<mi>T</mi>
<mrow>
<mi>e</mi>
<mi>m</mi>
</mrow>
</msub>
<mo>-</mo>
<msub>
<mi>B</mi>
<mi>m</mi>
</msub>
<msub>
<mi>&Omega;</mi>
<mi>m</mi>
</msub>
<mo>-</mo>
<msub>
<mi>J</mi>
<mi>m</mi>
</msub>
<mfrac>
<mrow>
<msub>
<mi>d&Omega;</mi>
<mi>m</mi>
</msub>
</mrow>
<mrow>
<mi>d</mi>
<mi>t</mi>
</mrow>
</mfrac>
</mrow>
<mrow>
<msub>
<mi>J</mi>
<mi>g</mi>
</msub>
<mfrac>
<mrow>
<msub>
<mi>d&Omega;</mi>
<mi>m</mi>
</msub>
</mrow>
<mrow>
<mi>d</mi>
<mi>t</mi>
</mrow>
</mfrac>
<mo>=</mo>
<msub>
<mi>T</mi>
<mrow>
<mi>h</mi>
<mi>s</mi>
<mo>_</mo>
<mi>m</mi>
</mrow>
</msub>
<mo>-</mo>
<msub>
<mi>B</mi>
<mi>g</mi>
</msub>
<msub>
<mi>&Omega;</mi>
<mi>m</mi>
</msub>
<mo>-</mo>
<msub>
<mi>T</mi>
<mi>g</mi>
</msub>
</mrow>
Wherein, Ths_m、ΩmThe machine torque and rotating speed of stiff shaft transmission when being connected for generator with simulated machine；TemFor simulation electricity
Electromechanical magnetic torque；Bm、JmFor simulated machine rotary inertia and friction coefficient；Jg、BgFor generator rotary inertia and friction coefficient；Tg
For generator torque.
4. the analogy method of the wind energy conversion system Flexible Transmission characteristic based on torque closed-loop control according to claim 1, its feature
It is：The machine torque of stiff shaft transmission, rotating speed described in the step 3 should be with mass block equivalent model high speed axis transmission
Machine torque, rotating speed are equal, are specially：
Ths_m=Ths_wt=Ths
Ωm=Ωg=Ω
Wherein, Ths_mAnd ΩmMachine torque, the rotating speed of stiff shaft transmission, T are represented respectivelyhs_wtAnd ΩgRespectively represent generator and
Machine torque, the rotating speed of its high speed shaft transmission when wind energy conversion system connects；ThsRefer to machine torque, rotating speed with Ω.
5. the analogy method of the wind energy conversion system Flexible Transmission characteristic based on torque closed-loop control according to claim 1, its feature
It is：The step 3 obtains the equation with three unknowns group on torque and rotating speed, is specially：
<mfenced open = "{" close = "">
<mtable>
<mtr>
<mtd>
<mrow>
<msub>
<msup>
<mi>&Omega;</mi>
<mo>&prime;</mo>
</msup>
<mrow>
<mi>w</mi>
<mi>t</mi>
</mrow>
</msub>
<mo>=</mo>
<mrow>
<mo>(</mo>
<msub>
<msup>
<mi>T</mi>
<mo>&prime;</mo>
</msup>
<mrow>
<mi>w</mi>
<mi>t</mi>
</mrow>
</msub>
<mo>-</mo>
<msub>
<mi>T</mi>
<mrow>
<mi>h</mi>
<mi>s</mi>
</mrow>
</msub>
<mo>)</mo>
</mrow>
<mo>/</mo>
<mrow>
<mo>(</mo>
<msub>
<msup>
<mi>J</mi>
<mo>&prime;</mo>
</msup>
<mrow>
<mi>w</mi>
<mi>t</mi>
</mrow>
</msub>
<mi>s</mi>
<mo>+</mo>
<msub>
<msup>
<mi>B</mi>
<mo>&prime;</mo>
</msup>
<mi>w</mi>
</msub>
<mo>)</mo>
</mrow>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<msub>
<mi>T</mi>
<mrow>
<mi>h</mi>
<mi>s</mi>
</mrow>
</msub>
<mo>=</mo>
<mrow>
<mo>(</mo>
<msub>
<mi>B</mi>
<mrow>
<mi>t</mi>
<mi>g</mi>
</mrow>
</msub>
<mo>+</mo>
<msub>
<mi>K</mi>
<mrow>
<mi>t</mi>
<mi>g</mi>
</mrow>
</msub>
<mo>/</mo>
<mi>s</mi>
<mo>)</mo>
</mrow>
<mrow>
<mo>(</mo>
<msub>
<msup>
<mi>&Omega;</mi>
<mo>&prime;</mo>
</msup>
<mrow>
<mi>w</mi>
<mi>t</mi>
</mrow>
</msub>
<mo>-</mo>
<mi>&Omega;</mi>
<mo>)</mo>
</mrow>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<msub>
<mi>T</mi>
<mrow>
<mi>e</mi>
<mi>m</mi>
</mrow>
</msub>
<mo>=</mo>
<msub>
<mi>T</mi>
<mrow>
<mi>h</mi>
<mi>s</mi>
</mrow>
</msub>
<mo>+</mo>
<mrow>
<mo>(</mo>
<msub>
<mi>J</mi>
<mi>m</mi>
</msub>
<mi>s</mi>
<mo>+</mo>
<msub>
<mi>B</mi>
<mi>m</mi>
</msub>
<mo>)</mo>
</mrow>
<mi>&Omega;</mi>
</mrow>
</mtd>
</mtr>
</mtable>
</mfenced>
Wherein, Ω 'wtFor the high speed shaft reduced value of wind energy conversion system rotating speed；T′wtFor the value of wind energy conversion system pneumatic torque conversion to high speed shaft；
J′wt、B′wtThe value to high speed shaft is converted for wind energy conversion system rotary inertia and friction coefficient；Ktg、BtgRepresent the coefficient of elasticity of high speed shaft
And damped coefficient；TemFor simulated machine electromagnetic torque；Bm、JmFor simulated machine friction coefficient and rotary inertia；S is Laplce
Operator；ThsRefer to machine torque, rotating speed with Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711120214.2A CN107975458B (en) | 2017-11-14 | 2017-11-14 | A kind of analogy method of the wind energy conversion system Flexible Transmission characteristic based on torque closed-loop control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711120214.2A CN107975458B (en) | 2017-11-14 | 2017-11-14 | A kind of analogy method of the wind energy conversion system Flexible Transmission characteristic based on torque closed-loop control |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107975458A true CN107975458A (en) | 2018-05-01 |
| CN107975458B CN107975458B (en) | 2019-07-16 |
Family
ID=62013441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711120214.2A Active CN107975458B (en) | 2017-11-14 | 2017-11-14 | A kind of analogy method of the wind energy conversion system Flexible Transmission characteristic based on torque closed-loop control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107975458B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108979975A (en) * | 2018-08-17 | 2018-12-11 | 广东志成冠军集团有限公司 | A kind of wind energy conversion system simulation system |
| CN111854070A (en) * | 2020-06-09 | 2020-10-30 | 海信（山东）空调有限公司 | Air conditioner and air volume control method |
| CN113722863A (en) * | 2021-09-10 | 2021-11-30 | 南京邮电大学 | Wind turbine dynamic characteristic simulation system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705169A (en) * | 2012-06-26 | 2012-10-03 | 河海大学 | Model machine for monitoring and controlling operation state of wind power generation |
| WO2014053718A1 (en) * | 2012-10-01 | 2014-04-10 | IFP Energies Nouvelles | Method for controlling a wind turbine by means of an estimation of the incident wind speed |
-
2017
- 2017-11-14 CN CN201711120214.2A patent/CN107975458B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705169A (en) * | 2012-06-26 | 2012-10-03 | 河海大学 | Model machine for monitoring and controlling operation state of wind power generation |
| WO2014053718A1 (en) * | 2012-10-01 | 2014-04-10 | IFP Energies Nouvelles | Method for controlling a wind turbine by means of an estimation of the incident wind speed |
Non-Patent Citations (1)
| Title |
|---|
| 郭鸿浩: "基于永磁无刷直流电动机的风力机模拟系统研究", 《万方数据知识服务平台》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108979975A (en) * | 2018-08-17 | 2018-12-11 | 广东志成冠军集团有限公司 | A kind of wind energy conversion system simulation system |
| CN111854070A (en) * | 2020-06-09 | 2020-10-30 | 海信（山东）空调有限公司 | Air conditioner and air volume control method |
| CN113722863A (en) * | 2021-09-10 | 2021-11-30 | 南京邮电大学 | Wind turbine dynamic characteristic simulation system |
| CN113722863B (en) * | 2021-09-10 | 2023-07-04 | 南京邮电大学 | Dynamic characteristic simulation system of wind turbine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107975458B (en) | 2019-07-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Raach et al. | Nonlinear model predictive control of floating wind turbines with individual pitch control | |
| CN104410107B (en) | A kind of passive integral sliding mode control method of double-fed wind power system | |
| CN102705169B (en) | Model machine for monitoring and controlling operation state of wind power generation | |
| CN107975458A (en) | A kind of analogy method of the wind energy conversion system Flexible Transmission characteristic based on torque closed-loop control | |
| CN105048917A (en) | ESO-based control method of double-fed wind power generation system integral sliding mode controller | |
| CN102969968A (en) | Permanent magnet synchronous motor control method | |
| CN105591402B (en) | A kind of modeling and simulation method and apparatus of direct-drive permanent-magnetism Wind turbines | |
| CN107121932A (en) | Motor servo system error symbol integrates Robust Adaptive Control method | |
| CN103760779A (en) | Direct-driven wind generating set dynamic simulation system | |
| CN104200724A (en) | Large wind turbine generator variable-pitch experiment table and simulation experiment method thereof | |
| Chatri et al. | Integral-type terminal sliding mode control approach for wind energy conversion system with uncertainties | |
| CN104234934B (en) | Wind power generator rotating speed control method | |
| CN106026175A (en) | Time domain matrix modeling method for a full-order doubly-fed wind power generation system | |
| Zhang et al. | Research on the influence of system parameters on the electromechanical dynamics of a large wind turbine drivetrain | |
| Wilson et al. | Transient stability and performance based on nonlinear power flow control design of renewable energy systems | |
| CN106773793A (en) | A kind of electronic change loading analogue system and method | |
| CN106533313A (en) | Command filtering control method of extreme learning machine of permanent-magnet synchronous motor for electric vehicle | |
| CN105569930A (en) | Wind turbine simulator rotational inertia compensation improving method based on deviation inhibition | |
| CN111310352B (en) | Method for simulating dynamic characteristics of wind turbine system | |
| Sancar et al. | Hardware-in-the-loop simulations and control design for a small vertical axis wind turbine | |
| CN105226635B (en) | Double-feedback type wind generator analogue system | |
| Benaaouinate et al. | Emulation of a Wind Turbine Using Induction Motor Driven by Field Oriented Control | |
| Fadaeinedjad et al. | Simulation of a wind turbine with doubly-fed induction machine using FAST and Simulink | |
| Merabet et al. | Sliding mode speed control for wind energy conversion systems | |
| CN113722863B (en) | Dynamic characteristic simulation system of wind turbine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: No. 66, New Model Road, Gulou District, Nanjing City, Jiangsu Province, 210000 Applicant after: Nanjing Post & Telecommunication Univ. Address before: 210023 9 Wen Yuan Road, Ya Dong new town, Nanjing, Jiangsu. Applicant before: Nanjing Post & Telecommunication Univ. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |