CN108599260A - A kind of generated output power control method and device inhibiting harmonic current - Google Patents
A kind of generated output power control method and device inhibiting harmonic current Download PDFInfo
- Publication number
- CN108599260A CN108599260A CN201810650321.4A CN201810650321A CN108599260A CN 108599260 A CN108599260 A CN 108599260A CN 201810650321 A CN201810650321 A CN 201810650321A CN 108599260 A CN108599260 A CN 108599260A
- Authority
- CN
- China
- Prior art keywords
- current
- wind
- phase
- driven generator
- output
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 34
- 230000002401 inhibitory effect Effects 0.000 title claims abstract description 13
- 230000005611 electricity Effects 0.000 claims description 42
- 230000010354 integration Effects 0.000 claims description 8
- 238000010248 power generation Methods 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000003786 synthesis reaction Methods 0.000 claims description 2
- 238000004804 winding Methods 0.000 description 17
- 238000010586 diagram Methods 0.000 description 8
- 238000001514 detection method Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000005669 field effect Effects 0.000 description 2
- 238000002307 isotope ratio mass spectrometry Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H02J3/386—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/01—Arrangements for reducing harmonics or ripples
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P2101/00—Special adaptation of control arrangements for generators
- H02P2101/15—Special adaptation of control arrangements for generators for wind-driven turbines
-
- 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
- Y02E10/76—Power conversion electric or electronic aspects
-
- 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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Wind Motors (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
The embodiment of the present application provides a kind of generated output power control method and device inhibiting harmonic current, belongs to technical field of electric power.The method includes：Obtain current wind generator speed；According to the correspondence of rotating speed and reference current under the conditions of wind-driven generator rotating speed and preset peak power output, the corresponding reference current of wind-driven generator rotating speed is determined；Obtain the three-phase current of current wind generator output；Two phase inversion of three-phase is carried out to three-phase current, obtains biphase current；According to biphase current and preset biphase current joint account formula, resultant current is obtained；According to resultant current, reference current and the determination of preset control algolithm and control signal is exported, control signal is used to control opening and turning off for the device for power switching of the three-phase bridge circuit, so that the wind driven generator output power reaches peak power output.Using the present invention, harmonic current can be inhibited, ensure that wind-driven generator torque is more steady, improve power factor.
Description
Technical field
This application involves technical field of electric power, are controlled more particularly to a kind of generated output power inhibiting harmonic current
Method and device.
Background technology
Wind-power electricity generation is to be converted into electric energy using the wind energy of the Nature, is a kind of clean energy resource.When the wind speed of nature is
Long variation, the peak power output of different wind speed leeward power generators is different, and therefore, it is necessary to pass through wind-driven generator work(
Rate tracking and controlling method adjusts wind driven generator output power, so that wind generated output power is attained by under different wind speed
Peak power output value.
Existing wind generator system drives air vane rotation to promote wind turbine power generation, wind-force hair using wind-force
It after the charged device rectification of alternating current of motor output, then charges to battery, the electric energy that wind-driven generator generates is made to become chemistry
Can, then with the inverter for having protection circuit, the direct current that battery exports is converted into 220V electric mains, is stablized for user
It uses, by adjusting the propeller pitch angle of air vane in real time, changes wind-driven generator rotating speed, so that the output power of wind-driven generator
Moment is maintained on maximum power curve, and such wind driven generator output power is attained by maximum work output under different wind speed
Rate value.
However, the elements such as charger, inverter belong to nonlinear load, when the sinusoidal voltage of wind-driven generator output adds
When being pressed on such nonlinear load, fundamental current can be distorted generation harmonic current.If the harmonic wave in wind generator system
Electric current is excessive, easily leads to the equipment damage in wind generator system, and harm is generated to wind-driven generator self-operating, meanwhile,
Power grid quality is influenced after grid-connected.On the other hand, the presence of harmonic current will reduce equipment net side power factor, increase idle work(
Rate, when this happens, the numerical value of power-factor meter will be distorted in electric system, to influence the work(to electricity consumption user
The holding water property of rate factor management.
Invention content
The embodiment of the present application be designed to provide it is a kind of inhibit harmonic current generated output power control method and
Device can inhibit harmonic current, ensure that wind-driven generator torque is more steady, improve power factor.Specific technical solution is such as
Under：
In a first aspect, providing a kind of generated output power control method inhibiting harmonic current, the method application
Control unit in electricity generation system, the electricity generation system further include wind-driven generator and three-phase bridge circuit, the method packet
It includes：
Obtain presently described wind-driven generator rotating speed；
It is corresponding with reference current according to rotating speed under the conditions of the wind-driven generator rotating speed and preset peak power output
Relationship determines the corresponding reference current of the wind-driven generator rotating speed；
Obtain the three-phase current of presently described wind-driven generator output；
- two phase inversion of three-phase is carried out to the three-phase current, obtains biphase current；
According to the biphase current and preset biphase current joint account formula, resultant current is obtained；
According to the resultant current, the reference current and the determination of preset control algolithm and control signal is exported, it is described
Control signal is used to control opening and turning off for the device for power switching of the three-phase bridge circuit, so that the wind-driven generator
Output power reaches peak power output.
Optionally, it is described according to the resultant current, the reference current and preset control algolithm are determining and export control
Signal processed, including：
According to the reference current and preset threshold value setting strategy, upper threshold current and lower threshold current are determined, it is described
Upper threshold current is more than the reference current, and the lower threshold current is less than the reference current；
When the resultant current is more than the upper threshold current, low level control signal is exported；When the resultant current
When less than the lower threshold current, high-level control signal is exported.
Optionally, it is described according to the resultant current, the reference current and preset control algolithm are determining and export control
Signal processed, including：
Calculate the difference of the resultant current and the reference current；
According to the difference and preset proportional integration algorithm of the resultant current and the reference current, target duty is determined
Than；
Output duty cycle be the target duty than pulse width modulating signal.
Second aspect provides a kind of generated output power control device inhibiting harmonic current, is applied to power generation system
Control unit in system, the electricity generation system further include wind-driven generator and three-phase bridge circuit, and described device includes：
Rotating speed acquisition module, for obtaining presently described wind-driven generator rotating speed；
Reference current determining module, under the conditions of according to the wind-driven generator rotating speed and preset peak power output
The correspondence of rotating speed and reference current determines the corresponding reference current of the wind-driven generator rotating speed；
Three-phase current acquisition module, the three-phase current for obtaining presently described wind-driven generator output；
First computing module obtains biphase current for carrying out-two phase inversion of three-phase to the three-phase current；
Second computing module, for according to the biphase current and preset biphase current joint account formula, being closed
At electric current；
Output module, for according to the resultant current, the reference current and preset control algolithm are determining and export
Signal is controlled, the control signal is used to control opening and turning off for the device for power switching of the three-phase bridge circuit, so that
The wind driven generator output power reaches peak power output.
Optionally, the output module, including：
First determination unit determines upper threshold current for setting strategy according to the reference current and preset threshold value
And lower threshold current, the upper threshold current are more than the reference current, the lower threshold current is less than the reference current；
First output unit, for when the resultant current is more than the upper threshold current, output low level control to be believed
Number；When the resultant current is less than the lower threshold current, high-level control signal is exported.
Optionally, the output module, including：
Difference computational unit, the difference for calculating the resultant current and the reference current；
Second determination unit is used for difference and preset proportional integration according to the resultant current and the reference current
Algorithm determines target duty ratio；
Second output unit, for output duty cycle be the target duty than pulse width modulating signal.
A kind of generated output power control method and device inhibiting harmonic current provided in an embodiment of the present invention, can be with
Obtain current wind generator speed, and then according to rotating speed under the conditions of wind-driven generator rotating speed and preset peak power output with
The correspondence of reference current determines the corresponding reference current of wind-driven generator rotating speed, and it is defeated then to obtain current wind generator
The three-phase current gone out carries out-two phase inversion of three-phase to three-phase current, biphase current is obtained, according to biphase current and preset two
Phase current joint account formula obtains resultant current, and then is determined according to resultant current, reference current and preset control algolithm
And control signal is exported, control signal is used to control opening and turning off for the device for power switching of the three-phase bridge circuit, with
Wind driven generator output power is set to reach peak power output, because to synthesizing current follow-up control so that wind-driven generator is defeated
The three-phase current gone out will present the preferable sinusoidal waveform of sine degree, namely inhibit harmonic current, ensure generator torque more
Steadily, power factor is improved.
Certainly, implementing any product of the application or method must be not necessarily required to reach all the above excellent simultaneously
Point.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is a kind of power generation system structure schematic diagram provided in an embodiment of the present invention；
Fig. 2 is a kind of generated output power control method flow inhibiting harmonic current provided in an embodiment of the present invention
Figure；
Fig. 3 is that a kind of control signal provided in an embodiment of the present invention determines method flow diagram；
Fig. 4 is that a kind of control signal provided in an embodiment of the present invention determines method flow diagram；
Fig. 5 is a kind of power generation system structure schematic diagram provided in an embodiment of the present invention；
Fig. 6 is a kind of three-phase current change schematic diagram provided in an embodiment of the present invention；
Fig. 7 is a kind of wind-driven generator three-phase counter potential waveform figure provided in an embodiment of the present invention；
Current direction figure when Fig. 8 is a kind of device for power switching conducting provided in an embodiment of the present invention；
Current direction figure when Fig. 9 is a kind of device for power switching shutdown provided in an embodiment of the present invention；
Figure 10 is a kind of generated output power control device structure inhibiting harmonic current provided in an embodiment of the present invention
Schematic diagram.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall in the protection scope of this application.
An embodiment of the present invention provides a kind of generated output power control methods inhibiting harmonic current, are applied to power generation
Control unit in system, the electricity generation system further include：Wind-driven generator, three-phase bridge circuit.
Wherein, three-phase bridge circuit is made of three bridge arm parallel connections, and bridge arm is to be connected in series with to constitute by upper and lower arms,
And upper arm is diode, and underarm is the device for power switching with anti-paralleled diode.The three-phase electricity of wind-driven generator output
Each phase power supply be respectively connected to the junctions of the upper and lower arms of each bridge arm in the three-phase bridge circuit, and every phase of three-phase electricity
The bridge arm of plant-grid connection is different.The grid of the device for power switching of control unit and three-phase bridge circuit connects, and control unit is defeated
Go out and control signal all the way, control signal is used to control the conducting and shutdown of the device for power switching of three-phase bridge circuit, to complete
The boosting of electricity generation system, output power adjust and the function of wind-driven generator.
It should be noted that in three-phase bridge circuit, upper arm can be the device for power switching with anti-paralleled diode,
And underarm is diode, the conducting direction of each diode in three-phase bridge circuit is consistent with each other, for example, it is assumed that load both ends point
Not Wei Ra and Rb, then the forward conduction direction of the diode in three-phase bridge circuit all point in Ra or three-phase bridge circuit
The forward conduction direction of diode all point to Rb.
Device for power switching can be MOSFET (Metal-Oxide-Semiconductor Field-Effect, metal-
Oxide semiconductor field effect transistor) or IGBT (Insulated Gate Bipolar Transistor, insulated gate bipolar
Transistor npn npn) etc. have control turn-off capacity switching device.
Every phase power supply of the three-phase electricity of wind-driven generator output can access the upper arm of any bridge arm in three-phase bridge circuit
With the junction of underarm, and the bridge arm of every phase plant-grid connection of three-phase electricity is different.For example, the three-phase electricity of wind-driven generator output is
A phase power supplys, b phases power supply and c phase power supplys, each bridge arm of three-phase bridge circuit are the first bridge arm, the second bridge arm and third bridge arm, right
For a phase power supplys, a phases power supply can access any bridge arm of three-phase bridge circuit, upper when a phases the first bridge arm of plant-grid connection
When the junction of arm and underarm, the junction of the upper and lower arms of b phases the second bridge arm of plant-grid connection, c phase plant-grid connection third bridges
The junction of the upper and lower arms of arm；Alternatively, the junction of the upper and lower arms of b phase plant-grid connection third bridge arms, c phase power supplys connect
Enter the junction of the upper and lower arms of the second bridge arm.When the junction of the upper and lower arms of a phases the second bridge arm of plant-grid connection, b
The junction of the upper and lower arms of the first bridge arm of phase plant-grid connection, the connection of the upper and lower arms of c phase plant-grid connection third bridge arms
Place；Alternatively, the junction of the upper and lower arms of b phase plant-grid connection third bridge arms, the upper arm of c phases the first bridge arm of plant-grid connection is under
The junction of arm.When the junction of the upper and lower arms of a phase plant-grid connection third bridge arms, b phases the first bridge arm of plant-grid connection
The junction of upper and lower arms, the junction of the upper and lower arms of c phases the second bridge arm of plant-grid connection；Alternatively, b phases plant-grid connection
The junction of the upper and lower arms of two bridge arms, the junction of the upper and lower arms of c phases the first bridge arm of plant-grid connection.Similarly, for b
For phase power supply, when any bridge arm of b phase plant-grid connection three-phase bridge circuits, the case where each bridge arm of other phase plant-grid connections, is as above
It is described.For c phase power supplys, when any bridge arm of c phase plant-grid connection three-phase bridge circuits, other each bridge arms of phase plant-grid connection
The case where it is as described above.
Optionally, electricity generation system further includes multiple inductance, and each phase power supply of the three-phase electricity of wind-driven generator output leads to respectively
Cross the junction of the upper and lower arms of each bridge arm in inductance access three-phase bridge circuit, the inductance of every phase power supply connection of three-phase electricity
It is different.
In this way, using the one-way conduction of diode in three-phase bridge circuit, three-phase bridge circuit can be made to receive wind-force
The three-phase alternating current of generator output, exports direct current, has rectification function.It is controlled all the way moreover, control unit can export
Signal controls the break-make of the device for power switching in three-phase bridge circuit, to complete the boost function of electricity generation system, adjusts power generation
The function and wind-driven generator function of machine output power.
Specifically, electricity generation system shown in Figure 1, electricity generation system include：Wind-driven generator 101, three-phase bridge circuit
102, load 103 and control unit 104.
Wherein, diode 1021 is the upper arm of the first bridge arm 102a, device for power switching 1024 and anti-paralleled diode
1025 constitute the underarm of the first bridge arm 1030.The underarm of the upper arm of first bridge arm 1030 and the first bridge arm 1030 is connected in series with composition
First bridge arm 1030.
Diode 1022 is the upper arm of the second bridge arm 102b, and device for power switching 1026 and anti-paralleled diode 1027 are constituted
The underarm of second bridge arm 1031.The underarm of the upper arm of second bridge arm 1031 and the second bridge arm 1031, which is connected in series with, constitutes the second bridge arm
1031。
Diode 1023 is the upper arm of third bridge arm 102c, and device for power switching 1028 and anti-paralleled diode 1029 are constituted
The underarm of third bridge arm 1032.The underarm of the upper arm of third bridge arm 1032 and the second bridge arm 1031, which is connected in series with, constitutes the first bridge arm
1030。
First bridge arm 102a, the second bridge arm 102b and third bridge arm 102c parallel connections constitute three-phase bridge circuit.
Wherein, load 103 includes capacitance 1031 and accumulator 1032, and capacitance 1031 and accumulator 1032 are connected in parallel, and is born
103 are carried to connect with 102 DC side parallel of three-phase bridge circuit.
It should be noted that load 103 or inverter or other equivalent circuits.
The pin connection relation of diode 1021 and device for power switching 1024 with anti-paralleled diode 1025 is not
Centainly according to shown in Fig. 1, diode 1022 connects pass with 1026 pin of device for power switching with anti-paralleled diode 1027
System might not be according to shown in Fig. 1 institutes, and diode 1023 and the device for power switching 1028 with anti-paralleled diode 1029 draw
Foot connection relation might not according to Fig. 1 institute shown in, as long as ensure diode 1021, diode 1022, diode 1023, two poles
Pipe 1022, diode 1027 are consistent with the conducting direction of diode 1029.
Control unit output end is separately connected device for power switching 1024, device for power switching 1026 and device for power switching
1028 grid, the output of control unit 104 control signal, control the device for power switching in three-phase bridge circuit 102 all the way
Conducting and shutdown can complete rectifier boost, output power adjusting and the wind-driven generator function of electricity generation system.
As shown in Fig. 2, this method may comprise steps of：
Step 201, current wind generator speed is obtained.
The wind of nature drives wind-driven generator rotation, wind-driven generator to convert wind energy into electric energy.
In force, control unit can obtain the rotating speed of current time wind-driven generator in real time.Control unit can wrap
Wind-driven generator speed probe is included, wind-driven generator speed probe detects the rotating speed of current time wind-driven generator in real time.
Step 202, according to rotating speed under the conditions of wind-driven generator rotating speed and preset peak power output and reference current
Correspondence determines the corresponding reference current of wind-driven generator rotating speed.
Wherein, the correspondence of rotating speed and reference current indicates under the conditions of peak power output：Under current wind speed, wind-force hair
When motor reaches peak power output, the rotating speed of wind-driven generator and the correspondence of reference current.Wind-power electricity generation can be passed through
The maximum power operation curve of machine obtains, and is the prior art, and the embodiment of the present invention does not do specific detailed description herein.
In force, control unit is previously stored with rotating speed pass corresponding with reference current under the conditions of peak power output
System, further according to wind-driven generator rotating speed, determines the corresponding reference current of current wind generator speed.Control unit can include
Processor, step 202 can specifically be executed by the processor, which can be microcontroller or other microcontrollers.
Step 203, the three-phase current of current wind generator output is obtained.
In force, control unit may include current detection sensor, and current detection sensor is used for detection in real time and works as
The three-phase current of preceding wind-driven generator output.
Step 204 ,-two phase inversion of three-phase is carried out to three-phase current, obtains biphase current.
In force, according to the constant equivalence principle of power, control unit is public according to three-phase current and-two phase inversion of three-phase
Formula (1) calculates biphase current.
Wherein, iαIndicate the α shaft currents in biphase current, iβIndicate the β shaft currents in biphase current, ia、ibAnd icIt indicates
Three-phase current.
Control unit can include processor, and processor is connect with current sensor, obtain current detection sensor detection
Three-phase current, step 204 and following step 205 can specifically be executed by a processor, the processor can be microcontroller or
Other microcontrollers.
Step 205, according to biphase current and preset biphase current joint account formula, resultant current is obtained.
In force, because in biphase current α shaft currents iαWith β shaft currents iβIn, α axis is mutually perpendicular to β axis, so control
Component processed can calculate resultant current according to biphase current and biphase current joint account formula (2).
Wherein, ihFor resultant current, iαIndicate the α shaft currents in biphase current, iβIndicate the β shaft currents in biphase current.
Step 206, according to resultant current, reference current and preset control algolithm are determining and export control signal, control
Signal is used to control opening and turning off for the device for power switching of the three-phase bridge circuit, so that wind driven generator output power
Reach peak power output.
In force, control unit is determining according to resultant current, reference current and preset control algolithm and exports control
Signal, control signal are used to control opening and turning off for the device for power switching of the three-phase bridge circuit so that resultant current
The tracking to reference current is remained, so that wind driven generator output power reaches peak power output.
Wherein, preset control algolithm can be Hysteresis control algorithm or proportional plus integral control algorithm.Control unit can
With comprising signal generator, signal generator is connect with processor, processor is used for determining the control signal that needs export, signal
The control signal that generator is exported according to the needs that processor determines, exports the control signal.
It should be noted that step 203~step 205 can be with the execution sequence phase intermodulation of step 201~step 202
It changes, or synchronous execution.
Optionally, referring to Fig. 3, according to resultant current, reference current and the determination of preset control algolithm and control letter is exported
Number, specific processing step is as follows：
Step 301, strategy is set according to reference current and preset threshold value, determines upper threshold current and lower threshold value electricity
Stream, upper threshold current are more than reference current, and lower threshold current is less than reference current.
In force, strategy is set according to reference current and preset threshold value, determines upper threshold current and lower threshold current,
Threshold value setting strategy can specifically be determined according to practical situations.
Wherein, upper threshold current is more than reference current, and lower threshold current is less than reference current.
For example, reference current is 5A, upper threshold current can be set as 6A, lower threshold current 4A.
Control unit can include processor, and step 202 can specifically be executed by the processor, which can be
Microcontroller or other microcontrollers.
Step 302, when resultant current is more than upper threshold current, low level control signal is exported；When resultant current is less than
When lower threshold current, high-level control signal is exported.
In force, when resultant current is more than upper threshold current, control unit exports low level control signal, for controlling
The device for power switching of three-phase bridge circuit processed turns off, and reduces resultant current.
When resultant current is less than lower threshold current, control unit exports high-level control signal, for controlling three-phase bridge
The device for power switching of formula circuit is open-minded, increases resultant current.
Control unit can include comparator and signal generator, and comparator is connect with signal generator, and comparator is used for
Compare resultant current and the size of upper threshold current and compared with resultant current and lower threshold current size, signal generator according to
Comparison result output control signal.
In this way so that resultant current remains the tracking to reference current, so that wind driven generator output power reaches
Peak power output.
Optionally, referring to Fig. 4, according to resultant current, reference current and the determination of preset control algolithm and control letter is exported
Number, specific processing step can also be：
Step 401, the difference of resultant current and reference current is calculated.
Step 402, according to the difference and preset proportional integration algorithm of resultant current and reference current, target duty is determined
Than.
Wherein, target duty than the pulse width modulating signal that component in order to control exports next time duty ratio, for adjusting
The size of resultant current is saved, so that resultant current is close to reference current.
In force, control unit determines target according to the difference and proportional integration algorithm of resultant current and reference current
Duty ratio.In fact, being to carry out proportional integration closed-loop control to resultant current so that resultant current is remained to reference current
Tracking, be the prior art, this is not described in detail specifically the embodiment of the present invention.
Step 403, output duty cycle be target duty than pulse width modulating signal.
In force, control unit repeats step 401~step 403 so that resultant current is remained to benchmark
The tracking of electric current, so that wind driven generator output power reaches peak power output.
Control unit can include processor and signal generator, which can be microcontroller or other microcontrollers
Device, signal generator are connect with processor, and step 401 and step 402 can specifically be executed by processor, and signal generator can be with
Step 403 is executed according to the determining duty ratio of processing.
In this way, wind driven generator output power control is using the method directly controlled to alternating current so that resultant current
It remains the tracking to reference current, to achieve the purpose that quick response runs power curve, keeps electricity generation system better
The variation for adapting to wind speed, improves the generating efficiency of electricity generation system.And harmonic current in electricity generation system can be inhibited, make wind
Power generator torque is more steady, also has power factor emendation function.
Inhibit the principle of harmonic current as follows：
Electricity generation system shown in FIG. 1 can be equivalent to circuit structure shown in fig. 5.Circuit structure according to Fig.5, according to
Kiel KVL (Kirchhoff Voltage Laws, Kirchhoff's second law) and KCL (Kirchhoff's Current
Law, Kirchhoff's current law (KCL)), it can obtain：
ia+ib+ic=0 (4)
ea+eb+ec=0 (5)
Wherein, eaFor wind-driven generator a opposite potentials, ebFor wind-driven generator b opposite potentials, ecFor wind-driven generator c phases
Back-emf, R are resistance value of the wind-driven generator per phase winding, and L is inductance value of the wind-driven generator per phase winding, iaIt is sent out for wind-force
Motor a phase currents, ibFor wind-driven generator b phase currents, icFor wind-driven generator c phase currents, uan2A points are to n2 points in indication circuit
Between voltage, ubn2B points are to the voltage between n2 points, u in indication circuitcn2C points are to the voltage between n2 points in indication circuit,
un2n1N2 points are the resistance value of each phase winding of wind-driven generator to the voltage between n1 points, R in indication circuit, and L is wind-power electricity generation
The inductance value of each phase winding of machine.
Three formulas in formula (3) are added, can be obtained：
By formula (4) (5) (6), can be obtained：
It is illustrated by taking a phases as an example, in ia>In the case of 0：If the control signal PWM of control unit output at this time is 0,
That is control signal is low level signal, and power switch tube V1 does not work, iaThe diode D1 flow direction loads of upper bridge arm can be passed through, this
When uan2For load voltage, due to having added bulky capacitor C1 to filter, it may be assumed that load voltage is constant, is denoted as UL, i.e. uan2=UL.If PWM
It is 1, that is, it is high level signal to control signal, then iaIt can be directly over the controllable tube V1 of lower bridge arm, at this time uan2It is zero.In ia<0
In the case of：No matter PWM is 0 or is 1, and the anti-paralleled diode VD1 that electric current ia only can be Jing Guo lower bridge arm flows back to power supply, because
This uan2It is zero, accordingly, following formula can be obtained：
uan2=UL·g(ia)·g(1-PWM) (8)
Similarly, it can be obtained：
ubn2=UL·g(ib)·g(1-PWM) (9)
ucn2=UL·g(ic)·g(1-PWM) (10)
Wherein g (x) is the sign determination function of definition, as follows：
By formula (7) (8) (9) (10), can be obtained：
By formula (3) (8) (11) (12), can be obtained：
ia>In the case of 0：
As PWM=0, by formula (11) (13), can be obtained：
When PWM is switched to 1 from 0, by formula (11) (13), can be obtained：
Due to eaIt is determined by generator speed, eaConstant, then contrast equation (12) (13) is as can be seen that PWM is switched to 1 from 0
Afterwards, electric current ia will increase.
ia<In the case of 0：
As PWM=0, according to formula (11) and formula (13), can be obtained：
It is available according to formula (11) and formula (13) when PWM is switched to 1 from 0：
Due to eaIt is determined by wind-driven generator rotating speed, eaConstant, comparison (12) and (13) is as can be seen that PWM is switched to 1 from 0
Afterwards, ia can reduce, and the absolute value of ia will increase.
From above analysis it is concluded that：No matter iaPositive and negative, when PWM is switched to 1 from 0, the absolute value of ia all can
Increase.I can similarly be obtainedbAnd icAlso so.
With reference to electricity generation system shown in Fig. 1, with ia>0, ib>0, ic<For 0, analysis and Control component output control signal
When PWM, the situation of change of each phase current of wind-driven generator.
As shown in fig. 6, when PWM is 0, that is, indicate low level signal,AndWind is indicated respectively
The three-phase current i of power generator outputa、ib、icSize, resultant current at this time
When PWM is switched to 1 from 0, i.e., it is switched to high level from low level, by analysis above it is found that three-phase current
Size will increase：iaFromIt increases toibFromIt increases toicThen fromIncrease toDue to ea、ebAnd ecThree back-emfs are determined by wind turbine, it may be considered that are sinusoidal variations, therefore, accordingly
ia、ibAnd icIt is also sinusoidal variations, so their synthesis will present the situation of rotation.
Therefore, control unit can export the size of control Signal Regulation resultant current, above-mentioned generated output power tune
So that resultant current remains the tracking to reference current in section step so that resultant current is eventually controlled in threshold value
Between limit and bottom threshold, and with three-phase current ia、ib、icIt changes with time so that resultant current can be controlled in threshold value
The movement locus of rotation is fluctuated and showed between the upper limit and bottom threshold, as shown in Figure 6.
When the amplitude of resultant current is constant or it is smaller to change, and shows the situation at the uniform velocity rotated, three-phase current ia、ib、
icThe preferable sinusoidal waveform of sine degree is will present, namely inhibits harmonic current, ensures that wind-driven generator torque is more steady.
PFC principle：
In Nonsinusoidal Circuits, power factor formula can be expressed as：
Wherein, λ is power factor, and γ is current distortion coefficient, IRMSFor the virtual value of input current, I1For input current
Fundamental wave virtual value, the cosine function of cos θ phase shifts between fundamental voltage and fundamental current.
By formula (18) (19), it can be seen that, the size of power factor is related with cos θ and γ, when cos θ values are relatively low,
Illustrate that reactive power is larger, utilization rate of equipment and installations is low, and conducting wire, transformer winding consume are big.When γ values are relatively low, then it represents that input current
Harmonic component is big, leads to input current virtual value IRMSIncrease, is reduced so as to cause power factor.So harmonic wave can be inhibited electric
Stream improves power factor.
By above-mentioned analysis, can obtain the present invention can inhibit harmonic current to improve power factor.
Based on above-mentioned electricity generation system, the embodiment of the present invention additionally provides a kind of brake control method, and this method may include：
When wind-driven generator needs braking, control unit output duty cycle is absolutely pulse control signal, so that wind-force is sent out
Motor braking.
Wind-driven generator principle is：When control unit exports high level, the power switch in three-phase bridge circuit
Device all turns on, then wind-driven generator three-phase shortcircuit, and wind-driven generator output electric energy is converted into thermal energy and consumes, so that
Wind-driven generator.
In force, when wind-driven generator needs braking, control unit output duty cycle is absolutely pulse control
Signal processed, duty ratio are that absolutely pulse control signal is high level signal, cause wind-driven generator three-phase shortcircuit, with
Make wind-driven generator.
Optionally, control unit output duty cycle is that absolutely pulse control signal, specific processing mode can be：
Control unit increases the duty ratio that strategy increases the pulse width modulating signal of output according to preset duty ratio, until control unit
The duty ratio of the pulse width modulating signal of part output reaches absolutely.
In force, control unit increases strategy according to preset duty ratio and increases the pulse width modulating signal exported
Duty ratio, until the duty ratio of the pulse width modulating signal of control unit output reaches absolutely.For example, control unit is pressed
According to default duty ratio growth rate, increase the duty ratio of the pulse width modulating signal of output, until the arteries and veins of control unit output
The duty ratio for rushing bandwidth modulation signals reaches absolutely.
Based on above-mentioned electricity generation system, control unit can be with output pulse width modulated signal, so that three-phase bridge circuit
Output voltage increases.
Referring to Fig. 1, when device for power switching 1024, device for power switching 1026 and device for power switching 1028 turn off,
Three-phase bridge circuit is equivalent to uncontrollable rectifier circuit, itself has rectification function.When device for power switching 1024, power switch device
Part 1026, the conducting of device for power switching 1028 and device for power switching 1024, device for power switching 1026, device for power switching
1028 close actions alternately when, using generator windings inductance storage AC energy and with generator alternating current induced electricity
Kinetic potential is superimposed, and is boosted, boosting principle is described in detail as follows：
Wind-driven generator three-phase counter potential waveform figure as shown in Figure 7, abscissa ω t are wind driven generator rotation angle,
Ordinate U is back-emf, eaIndicate wind-driven generator a opposite potentials, ebIndicate wind-driven generator b opposite potentials, ecIndicate wind-force
Generator c opposite potentials.
Wind-driven generator three-phase counter potential waveform figure shown in Fig. 7 can be divided into 6 sections, 60 degree of each section, i.e. section I
[0 °, 60 °], section II [60 °, 120 °], section III [120 °, 180 °], section IV [180 °, 240 °], section V [240 °,
300 °], section VI [300 °, 360 °].
Now to illustrate for section I [0 °, 60 °], by controlling device for power switching 1024, device for power switching
1026 and the turn-on and turn-off of device for power switching 1028 realize the principle of boost function, the boosting principle class in other sections
Seemingly.
I [0 °, 60 °] in section, wind-driven generator c opposite potentials ec, wind-driven generator a opposite potentials eaFor just, wind-force is sent out
Motor b opposite potentials ebIt is negative, when the conducting of three device for power switching of electricity generation system shown in FIG. 1, current direction such as Fig. 8
It is shown.It should be noted that Fig. 8 is the partial circuit diagram of Fig. 1, the related component of current direction is related only to, the purpose is to
In order to preferably show boosting principle.Wherein, the wind-driven generator equivalent circuit of Fig. 8 indicates the wind-driven generator of Fig. 1.Wind-force is sent out
In motor equivalent circuit, ea、ebAnd ecThe a phases of wind-driven generator, the back-emf of b phases and c phases, inductance 1011, inductance are indicated respectively
1012 and inductance 1013 indicate the winding inductance of a phases of wind-driven generator, b phases and c phases, i respectivelya、ibAnd icIt indicates respectively
Other component code names of a phase currents, b phase currents and the c phase currents of wind-driven generator, Fig. 8 are identical with Fig. 1.
When the conducting of three device for power switching of electricity generation system shown in FIG. 1, as it can be observed in the picture that wind-driven generator a phase electricity
Flow iaThrough wind-driven generator winding inductance 1011, device for power switching 1024, device for power switching 1026 and wind-driven generator around
Group inductance 1012 returns to b phases, c phase currents icThrough wind-driven generator winding inductance 1013, device for power switching 1028, power switch
Device 1026 and wind-driven generator winding inductance 1012 return to b phases, and electric current can be to wind-force when flowing through wind-driven generator winding inductance
Generator windings inductance charges, and before wind-driven generator winding inductance unsaturation, electric energy is stored in power generation in the form of magnetic energy
In the three pole reactor of machine, resultant current increases.
When the shutdown of three device for power switching of electricity generation system shown in FIG. 1, current direction is as shown in Figure 9.It needs
Bright, Fig. 9 is the partial circuit diagram of Fig. 1, relates only to the related component of current direction, its purpose is to preferably open up
Show boosting principle.Wherein, the wind-driven generator equivalent circuit of Fig. 9 indicates the wind-driven generator of Fig. 1.Wind-driven generator equivalent circuit
In, ea、ebAnd ecThe a phases of wind-driven generator, the back-emf of b phases and c phases, inductance 1011, inductance 1012 and inductance are indicated respectively
1013 indicate the winding inductance of a phases of wind-driven generator, b phases and c phases, i respectivelya、ibAnd icWind-driven generator is indicated respectively
A phase currents, b phase currents and c phase currents, Fig. 9 other components label it is identical with Fig. 1.
When the shutdown of three device for power switching of electricity generation system shown in FIG. 1, in section in I [0 °, 60 °], wind-force hair
Motor three-phase current flows to as shown in figure 9, a phases, c phase currents flow to capacitance respectively by diode 1021 and diode 1023
1031 and accumulator 1034, then b phases are returned to by diode 1027, it realizes to the straight of load (capacitance 1031 and accumulator 1032)
Stream power supply, completes rectification function, and when for load supplying, the magnetic energy of wind-driven generator a phase windings inductance 1011 is converted into electric energy,
Generate winding voltage, be superimposed with original three opposite potential of wind-driven generator so that a opposite potentials increase, similarly, b phases it is anti-
Potential also increases, then the voltage for supplying the direct current of load also increases, and resultant current reduces, and realizes DC boosting function.It needs
It is noted that the direct current that direct current, that is, three-phase bridge circuit 102 of supply load exports.
So DC boosting can be carried out by the break-make of the device for power switching of control three-phase bridge circuit, control
Component can control the break-make of device for power switching with output RF pulse length modulated signal, since device for power switching switchs
Much higher than three opposite potential frequency of wind-driven generator of frequency, it is believed that each phase voltage is protected in device for power switching switch periods
It holds constant, stores AC energy and being superimposed with generator alternating current induced electromotive force using wind-driven generator winding inductance and boost
Rectification.
Based on the same technical idea, referring to Figure 10, the embodiment of the present invention additionally provides a kind of hair inhibiting harmonic current
Output power of motor control device, the control unit being applied in electricity generation system, the electricity generation system further includes wind-driven generator
And three-phase bridge circuit, described device include：
Rotating speed acquisition module 1001, for obtaining presently described wind-driven generator rotating speed；
Reference current determining module 1002, for according to the wind-driven generator rotating speed and preset peak power output item
The correspondence of rotating speed and reference current under part determines the corresponding reference current of the wind-driven generator rotating speed；
Three-phase current acquisition module 1003, the three-phase current for obtaining presently described wind-driven generator output；
First computing module 1004 obtains biphase current for carrying out-two phase inversion of three-phase to the three-phase current；
Second computing module 1005, for according to the biphase current and preset biphase current joint account formula, obtaining
To resultant current；
Output module 1006, for being determined simultaneously according to the resultant current, the reference current and preset control algolithm
Output control signal, the control signal are used to control opening and turning off for the device for power switching of the three-phase bridge circuit,
So that the wind driven generator output power reaches peak power output.
Optionally, the output module 1006, including：
First determination unit determines upper threshold current for setting strategy according to the reference current and preset threshold value
And lower threshold current, the upper threshold current are more than the reference current, the lower threshold current is less than the reference current；
First output unit, for when the resultant current is more than the upper threshold current, output low level control to be believed
Number；When the resultant current is less than the lower threshold current, high-level control signal is exported.
Optionally, the output module 1006, including：
Difference computational unit, the difference for calculating the resultant current and the reference current；
Second determination unit is used for difference and preset proportional integration according to the resultant current and the reference current
Algorithm determines target duty ratio；
Second output unit, for output duty cycle be the target duty than pulse width modulating signal.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also include other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
Each embodiment in this specification is all made of relevant mode and describes, identical similar portion between each embodiment
Point just to refer each other, and each embodiment focuses on the differences from other embodiments.Especially for device reality
For applying example, since it is substantially similar to the method embodiment, so description is fairly simple, related place is referring to embodiment of the method
Part explanation.
The foregoing is merely the preferred embodiments of the application, are not intended to limit the protection domain of the application.It is all
Any modification, equivalent replacement, improvement and so within spirit herein and principle are all contained in the protection domain of the application
It is interior.
Claims (6)
1. a kind of generated output power control method inhibiting harmonic current, which is characterized in that the method is applied to power generation
Control unit in system, the electricity generation system further include wind-driven generator and three-phase bridge circuit, the method includes：
Obtain presently described wind-driven generator rotating speed；
According to the correspondence of rotating speed and reference current under the conditions of the wind-driven generator rotating speed and preset peak power output,
Determine the corresponding reference current of the wind-driven generator rotating speed；
Obtain the three-phase current of presently described wind-driven generator output；
- two phase inversion of three-phase is carried out to the three-phase current, obtains biphase current；
According to the biphase current and preset biphase current joint account formula, resultant current is obtained；
According to the resultant current, the reference current and the determination of preset control algolithm and export control signal, the control
Signal is used to control opening and turning off for the device for power switching of the three-phase bridge circuit, so that the wind-driven generator exports
Power reaches peak power output.
2. according to the method described in claim 1, it is characterized in that, it is described according to the resultant current, the reference current and
Preset control algolithm is determining and exports control signal, including：
According to the reference current and preset threshold value setting strategy, upper threshold current and lower threshold current, the upper-level threshold are determined
It is worth electric current and is more than the reference current, the lower threshold current is less than the reference current；
When the resultant current is more than the upper threshold current, low level control signal is exported；When the resultant current is less than
When the lower threshold current, high-level control signal is exported.
3. according to according to the method described in claim 1, it is characterized in that, described according to the resultant current, benchmark electricity
Stream and the determination of preset control algolithm simultaneously export control signal, including：
Calculate the difference of the resultant current and the reference current；
According to the difference and preset proportional integration algorithm of the resultant current and the reference current, target duty ratio is determined；
Output duty cycle be the target duty than pulse width modulating signal.
4. a kind of generated output power control device inhibiting harmonic current, which is characterized in that be applied in electricity generation system
Control unit, the electricity generation system further include wind-driven generator and three-phase bridge circuit, and described device includes：
Rotating speed acquisition module, for obtaining presently described wind-driven generator rotating speed；
Reference current determining module, for according to rotating speed under the conditions of the wind-driven generator rotating speed and preset peak power output
With the correspondence of reference current, the corresponding reference current of the wind-driven generator rotating speed is determined；
Three-phase current acquisition module, the three-phase current for obtaining presently described wind-driven generator output；
First computing module obtains biphase current for carrying out-two phase inversion of three-phase to the three-phase current；
Second computing module, for according to the biphase current and preset biphase current joint account formula, obtaining synthesis electricity
Stream；
Output module, for according to the resultant current, the reference current and preset control algolithm are determining and export control
Signal, the control signal is used to control opening and turning off for the device for power switching of the three-phase bridge circuit, so that described
Wind driven generator output power reaches peak power output.
5. device according to claim 4, which is characterized in that the output module, including：
First determination unit determines upper threshold current under for setting strategy according to the reference current and preset threshold value
Threshold current, the upper threshold current are more than the reference current, and the lower threshold current is less than the reference current；
First output unit, for when the resultant current is more than the upper threshold current, exporting low level control signal；When
When the resultant current is less than the lower threshold current, high-level control signal is exported.
6. device according to claim 4, which is characterized in that the output module, including：
Difference computational unit, the difference for calculating the resultant current and the reference current；
Second determination unit, for being calculated according to the difference of the resultant current and the reference current and preset proportional integration
Method determines target duty ratio；
Second output unit, for output duty cycle be the target duty than pulse width modulating signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810650321.4A CN108599260A (en) | 2018-06-22 | 2018-06-22 | A kind of generated output power control method and device inhibiting harmonic current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810650321.4A CN108599260A (en) | 2018-06-22 | 2018-06-22 | A kind of generated output power control method and device inhibiting harmonic current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108599260A true CN108599260A (en) | 2018-09-28 |
Family
ID=63628934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810650321.4A Pending CN108599260A (en) | 2018-06-22 | 2018-06-22 | A kind of generated output power control method and device inhibiting harmonic current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108599260A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021081790A1 (en) * | 2019-10-30 | 2021-05-06 | 深圳市大疆创新科技有限公司 | Electric motor control apparatus, device, system, and control method for electric motor control apparatus |
| CN113037155A (en) * | 2021-03-15 | 2021-06-25 | 北京航空航天大学 | Rectification and voltage stabilization device of permanent magnet synchronous generator and control method |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101017982A (en) * | 2007-03-12 | 2007-08-15 | 刘建政 | Light voltage and wind power integrated networking device with the reactive power compensation and harmonious administration function |
| CN101793235A (en) * | 2010-04-15 | 2010-08-04 | 哈尔滨工业大学 | Maximum power tracking type wind power generation device with energy predicting function and method thereof |
| CN102013869A (en) * | 2010-10-19 | 2011-04-13 | 北方工业大学 | Current control device and current control method for alternating current asynchronous motor |
| CN202084998U (en) * | 2011-06-03 | 2011-12-21 | 上海理工大学 | Wind power generating system |
| CN102769423A (en) * | 2012-07-16 | 2012-11-07 | 上海电力学院 | Permanent magnet synchronous motor wind power generation system based on Z-source inverter and control method of permanent magnet synchronous motor wind power generation system |
| CN103384079A (en) * | 2013-08-12 | 2013-11-06 | 合肥为民电源有限公司 | Method and circuit for tracking maximum power of small and medium-sized direct-driven wind power generation systems |
| CN103546071A (en) * | 2013-09-24 | 2014-01-29 | 株洲变流技术国家工程研究中心有限公司 | Method for controlling overcurrent jump stop of high-temperature fan in cement rotary kiln production line pipeline |
| CN104716669A (en) * | 2015-03-31 | 2015-06-17 | 许昌学院 | Converter dual-mode control method for permanent magnet synchronous wind power system |
| CN104868808A (en) * | 2015-05-25 | 2015-08-26 | 西北工业大学 | Aerial three-stage brushless power generation system starting excitation control method of two-phase exciter |
| CN104935214A (en) * | 2015-05-25 | 2015-09-23 | 西北工业大学 | Excitation control method for starting stage of aviation tertiary starting power generation system |
| CN105763125A (en) * | 2016-04-15 | 2016-07-13 | 西北工业大学 | Three-level synchronous starter/generator starting control method based on current/rotate speed timesharing loop closing |
| CN106026824A (en) * | 2016-07-26 | 2016-10-12 | 无锡同方聚能控制科技有限公司 | Method for identifying different models of alternating current motors |
| CN106451532A (en) * | 2016-09-09 | 2017-02-22 | 湖南大学 | Multi-phase direct-drive permanent-magnet wind power generation variable current integrated system and control method thereof |
| CN107026592A (en) * | 2017-06-01 | 2017-08-08 | 浙江赛安电气科技有限公司 | The weak magnetic control system and method for a kind of permagnetic synchronous motor |
| CN107147338A (en) * | 2017-04-27 | 2017-09-08 | 东北大学 | A kind of module separate type wind power generator control system and method |
-
2018
- 2018-06-22 CN CN201810650321.4A patent/CN108599260A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101017982A (en) * | 2007-03-12 | 2007-08-15 | 刘建政 | Light voltage and wind power integrated networking device with the reactive power compensation and harmonious administration function |
| CN101793235A (en) * | 2010-04-15 | 2010-08-04 | 哈尔滨工业大学 | Maximum power tracking type wind power generation device with energy predicting function and method thereof |
| CN102013869A (en) * | 2010-10-19 | 2011-04-13 | 北方工业大学 | Current control device and current control method for alternating current asynchronous motor |
| CN202084998U (en) * | 2011-06-03 | 2011-12-21 | 上海理工大学 | Wind power generating system |
| CN102769423A (en) * | 2012-07-16 | 2012-11-07 | 上海电力学院 | Permanent magnet synchronous motor wind power generation system based on Z-source inverter and control method of permanent magnet synchronous motor wind power generation system |
| CN103384079A (en) * | 2013-08-12 | 2013-11-06 | 合肥为民电源有限公司 | Method and circuit for tracking maximum power of small and medium-sized direct-driven wind power generation systems |
| CN103546071A (en) * | 2013-09-24 | 2014-01-29 | 株洲变流技术国家工程研究中心有限公司 | Method for controlling overcurrent jump stop of high-temperature fan in cement rotary kiln production line pipeline |
| CN104716669A (en) * | 2015-03-31 | 2015-06-17 | 许昌学院 | Converter dual-mode control method for permanent magnet synchronous wind power system |
| CN104868808A (en) * | 2015-05-25 | 2015-08-26 | 西北工业大学 | Aerial three-stage brushless power generation system starting excitation control method of two-phase exciter |
| CN104935214A (en) * | 2015-05-25 | 2015-09-23 | 西北工业大学 | Excitation control method for starting stage of aviation tertiary starting power generation system |
| CN105763125A (en) * | 2016-04-15 | 2016-07-13 | 西北工业大学 | Three-level synchronous starter/generator starting control method based on current/rotate speed timesharing loop closing |
| CN106026824A (en) * | 2016-07-26 | 2016-10-12 | 无锡同方聚能控制科技有限公司 | Method for identifying different models of alternating current motors |
| CN106451532A (en) * | 2016-09-09 | 2017-02-22 | 湖南大学 | Multi-phase direct-drive permanent-magnet wind power generation variable current integrated system and control method thereof |
| CN107147338A (en) * | 2017-04-27 | 2017-09-08 | 东北大学 | A kind of module separate type wind power generator control system and method |
| CN107026592A (en) * | 2017-06-01 | 2017-08-08 | 浙江赛安电气科技有限公司 | The weak magnetic control system and method for a kind of permagnetic synchronous motor |
Non-Patent Citations (2)
| Title |
|---|
| 刘立平: "《电力电子技术》", 30 August 2007 * |
| 李朋: "不平衡故障两相静止坐标系下并网逆变器控制策略研究", 《中国优秀硕士学位论文全文数据库工程科技II辑》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021081790A1 (en) * | 2019-10-30 | 2021-05-06 | 深圳市大疆创新科技有限公司 | Electric motor control apparatus, device, system, and control method for electric motor control apparatus |
| CN113037155A (en) * | 2021-03-15 | 2021-06-25 | 北京航空航天大学 | Rectification and voltage stabilization device of permanent magnet synchronous generator and control method |
| CN113037155B (en) * | 2021-03-15 | 2022-11-22 | 北京航空航天大学 | Rectification voltage stabilizing device of permanent magnet synchronous generator and control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Molina et al. | A new control strategy of variable speed wind turbine generator for three-phase grid-connected applications | |
| CN102522910B (en) | Mixed SVPWM control method used for three-phase grid-connected inverter | |
| CN103401267A (en) | Grid-connected circuit for small-sized wind-driven generator | |
| Svensson | Grid-connected voltage source converter: control principles and wind energy applications | |
| CN106385214B (en) | High-speed permanent magnetic synchronous motor control method based on Modular multilevel converter | |
| CN108429469A (en) | The sources Z dual stage matrix converter modulator approach based on Carrier-based PWM | |
| CN101599649B (en) | Directly-driven wind power generation system and mode for modulating SPWM inversion control signal in system | |
| CN109004849A (en) | A kind of Electric Servo Loading System PWM rectifier FAST RESPONSE | |
| CN108599260A (en) | A kind of generated output power control method and device inhibiting harmonic current | |
| CN105958525B (en) | PWM grid-connected inverter control method of permanent magnet wind power generation system | |
| Lu et al. | Multi-terminal DC transmission system for wind-farms | |
| Hussein et al. | Simple maximum power extraction control for permanent magnet synchronous generator based wind energy conversion system | |
| Svensson | Grid-connected voltage source converter | |
| Lavanya et al. | A simple controller using line commutated inverter with maximum power tracking for wind-driven grid-connected permanent magnet synchronous generators | |
| Bottu et al. | A Power electronic conditioner using ultracapacitors to improve wind turbine power quality | |
| CN113783441A (en) | Three-phase vienna rectifier carrier discontinuous pulse width modulation | |
| CN105958853A (en) | PWM gird connected inverter control method of permanent magnetism wind generator system | |
| Soltoski et al. | On the application of a three-phase two-switch DCM boost rectifier in small-scale wind energy conversion system | |
| Morales et al. | Control system design and simulation of an ac/dc-dc/dc-dc/ac power converter for a permanent magnet wind power generator in rural power generation | |
| Thangaprakash et al. | A new switching scheme for Z-source inverter to minimize ripples in the Z-source elements | |
| Park et al. | Cost-effective converters for micro wind turbine systems using pmsg | |
| Fan | Mathematical modelling of grid connected fixed-pitch variable-speed permanent magnet synchronous generators for wind turbines | |
| Li et al. | A motor torque control method based on integration quasi-resonant controller for reduced DC-link capacitance IPMSM drive system | |
| CN105978387A (en) | SVPWM-based photovoltaic grid-connected inverter control method | |
| VanderMeulen | Novel control of a permanent magnet linear generator for ocean wave energy applications |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180928 |