CN105375841B - A kind of control module of wind-driven generator - Google Patents
A kind of control module of wind-driven generator Download PDFInfo
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- CN105375841B CN105375841B CN201510877652.8A CN201510877652A CN105375841B CN 105375841 B CN105375841 B CN 105375841B CN 201510877652 A CN201510877652 A CN 201510877652A CN 105375841 B CN105375841 B CN 105375841B
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- 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
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Abstract
The present invention is a kind of control module of wind-driven generator, belongs to motor control technology field, is applied to wind-power electricity generation, and wind-driven generator is enable to automatically adjust output voltage according to wind-force size.The problem of generated energy increases when generally existing encounters strong wind during wind turbine power generation, excessively high output voltage are easily damaged control device and electrical equipment.Although scientific and technical personnel take counter-measure, these traditional counter-measures are incomplete, are all the methods for consuming energy or keeping away energy.The present invention develops a kind of control module of unique wind-driven generator, i.e., the scheme of reactor is sealed in aerogenerator stator winding, reactor is external.This reactor can easily change the size of induction reactance, and an electronic circuit may be used and realize automatic adjustment.Although wind-force, in wide variation, wind-driven generator remains to the relatively stable voltage of output.The present invention program is used in combination with existing traditional method, will receive better effect.
Description
Technical field
The present invention is a kind of control module of wind-driven generator, belongs to motor control technology field, is applied to wind-power electricity generation,
Wind-driven generator is set to automatically adjust output voltage according to wind-force size.
Background technology
Wind-driven generator is substantially polyphase alternator, and generally existing encounters greatly during present wind turbine power generation
The problem of generated energy increases when wind, at this time the excessively high output voltage of wind-driven generator be easily damaged control device and electrical equipment.
Although scientific and technical personnel take counter-measure, such as adjust the angle of the blade windward side of wind-driven generator, wind area is reduced
Etc..But these traditional counter-measures are incomplete, are all the methods for consuming energy or keeping away energy, must seek wind-driven generator thus
Better control mode.
Invention content
The present invention is in view of the above problems, develop a kind of control module of unique wind-driven generator, i.e., in wind-power electricity generation
Machine stator winding seals in the scheme of reactor, and reactor is external mode.
The control module for the wind-driven generator that the present invention develops is characterized in：In the end of the triple line packet of wind-driven generator
Reactor L1, L2, a L3 are respectively sealed in, the end of these three reactors is connected together as the neutral point of wind-driven generator；
Reactor L1, L2, L3 respectively carry pair side L ' 1, L ' 2, L ' 3, and three pair side L ' 1, L ' 2, L ' 3 are together in series, and string is flowed through in adjusting
Join the size of secondary side DC current to change the induction reactance size of reactor L1, L2, L3, to keep wind-driven generator big not with wind-force
The relatively stable voltage of small variation output；Using an electronic circuit, that is, PWM controller (1) come the sense to reactor L1, L2, L3
Anti- size realizes automatic adjustment.The present invention program and existing traditional energy consumption or keep away can method is used in combination, will receive more preferably
Effect.
1), reactor L1 and secondary L ' 2, reactor L3 and pair side L ' 3 in L ' 1, reactor L2 and pair respectively form one
Current transformer, reactor L1, L2, L3 may be regarded as the primary side of current transformer, and the electrical parameter of these three current transformers is identical；
Three pair side L ' 1, L ' 2,3 specific series systems of L ' are：The beginning of the secondary L ' 2 in the end auxiliary connection of L ' 1, the end of secondary side L ' 2
The terminal M 2 of L ' 3 is individually drawn when holding the beginning of auxiliary connection side L ' 3, the secondary beginning M1 in L ' 1 and pair, and M1 and M2 become series connection pair
Two endpoints on side.
2) alternating voltage, connected between two the endpoints M1 and M2 on secondary side after rectifier bridge VC1 is rectified into direct current,
The drain electrode of its anode connection N-channel field-effect tube V1, cathode connect the source electrode of field-effect tube V1, and the grid of field-effect tube V1 connects
Connect the output of PWM controller (1)；It is connected to resistance R0 between two the endpoints M1 and M2 on the secondary side of series connection.
3), there is detector in PWM controller (1), the size of wind-force can be perceived and accordingly export an electric signal, adjust
The output pulse width duty of PWM controller (1) adjusts the size for the DC current for flowing through the secondary side of series connection；When wind-force is very big
When, the output pulse width duty ratio for adjusting PWM controller (1) is 0%；When wind-force is small, PWM controller (1) is adjusted
Output pulse width duty ratio is 100%；When wind-force it is small with wind-force it is very big between change when, adjust PWM controller (1)
Output pulse width duty ratio changes between 100%~0%, and duty is relatively high when wind-force is smaller, and duty when wind-force is larger
It is relatively low.
This reactor can easily change the size of induction reactance, and an electronic circuit may be used and realize automatic adjust
Section.Although wind-force, in wide variation, wind-driven generator remains to the relatively stable voltage of output.The present invention program is consumed with existing tradition
The method that can or keep away energy is used in combination, and will receive better effect.
Description of the drawings
Fig. 1 (a) is the schematic diagram of conventional wind power generator.
Fig. 1 (b) is the schematic diagram for sealing in the wind-driven generator after reactor.
Fig. 2 is the schematic diagram for adjusting reactor induction reactance.
The meaning that each serial number in figure indicates is：
(1) PWM controller
Specific implementation mode
Fig. 1 (a) is the schematic diagram of conventional wind power generator, and Fig. 1 (b) is the signal for sealing in the wind-driven generator after reactor
Figure.Where invention explained below.
Fig. 1 (a) is the schematic diagram of conventional wind power generator, and wind-driven generator is substantially polyphase alternator, with three-phase
For illustrate：Wind-driven generator GA is embedded with three groups of line packets i.e. triple line packet, 120 ° of electric angles of mutual deviation, and every group of line packet represents a phase,
The end of triple line packet is mutually connected to each other, and is become " neutral point O ", and the beginning " U " of three groups of line packets, " V ", " W " are three-phase electricity
The output end of pressure.
Fig. 1 (b) is the schematic diagram for sealing in the wind-driven generator after reactor.Here wind-driven generator GA triple lines are changed
The connection type of end is wrapped, they are not connected directly, but after a reactor of respectively connecting per the end of phase line packet again
Being mutually connected to each other becomes " neutral point O "；The beginning " U " of triple line packet, " V ", " W " are still as the output of three-phase voltage
End.Illustrate the beginning of the end linked reactor L1 of U phase line packets, the beginning of the end linked reactor L2 of V phase line packets, W phase lines
The beginning of the end linked reactor L3 of packet, the end of reactor L1, L2, L3 are mutually connected to each other as wind-driven generator
" neutral point O ".Reactor L1, L2, L3 are separate, they all carry the secondary side of similar transformer, are wound on secondary side
Become current transformer on same iron core.The secondary side of reactor L1, L2, L3 are respectively L ' 1, L ' 2, L ' 3, reactor L1 and secondary side
L ' 1, reactor L2 and the secondary L ' 3 in L ' 2, reactor L3 and pair respectively form a current transformer, reactor L1, L2, L3
The primary side of current transformer is may be regarded as, the electrical parameter of these three current transformers is identical.Again three pairs side L ' 1, L ' 2 and L ' 3
It is together in series, i.e., the beginning of the secondary L ' 2 in the end auxiliary connection of L ' 1, the beginning of the secondary L ' 3 in the end auxiliary connection of L ' 2, then will
The terminal M 2 of L ' 3 is individually drawn when the secondary beginning M1 in L ' 1 and pair.It is secondary in L ' 1, it is secondary while L ' 2 and pair side L ' 3 connect in this way after
Agreement referred to as connects secondary side, M1 and M2 as two endpoints on the secondary side of series connection.
So, when two endpoint M1 and M2 short circuits on the secondary side of series connection, the induction reactance of reactor L1, L2, L3 are approximately equal to
Zero, and when two the endpoints M1 and M2 on the secondary side of series connection are disconnected, the induction reactance of reactor L1, L2, L3 are equal to XL=2 π fL, wherein L
For the inductance of reactor L1, L2, L3, f is the rotational frequency of wind-driven generator, it is related with the size of wind-force, and wind-force is greatly then frequently
Rate f is also high.If using PWM (pulse width) modulator approach, allow the secondary side of series connection two endpoint M1 and M2 when and short circuit, when and
It disconnects, then the induction reactance X of reactor L1, L2, L3LIt can change between 0~2 π fL, adjusting reactor is realized with this
The induction reactance of L1, L2, L3.
Fig. 2 is the schematic diagram for adjusting reactor induction reactance, during wind turbine power generation, reactor L1, L2, L3 stream
Overcurrent, pair side L ' 1, L ' 2 and L ' 3 will generate alternating voltage, the friendship between two the endpoints M1 and M2 on secondary side that connect
Galvanic electricity pressure is the superposition of induced potential on three pair side L ' 1, L ' 2 and L ' 3.The alternating voltage of this superposition passes through rectifier bridge VC1
After being rectified into direct current, the drain electrode of anode connection N-channel field-effect tube V1, cathode connects the source electrode of field-effect tube V1, field
The output of the grid connection PWM controller (1) of effect pipe V1.PWM controller (1) is by wind-driven generator output voltage control, wind
Power generator output voltage is directly proportional to wind-force size；The size of apparent wind power simultaneously accordingly exports an electric signal, to adjust PWM controls
The output pulse width duty ratio and driving FET V1 of device (1) processed：
1), when wind-force is very big, the output pulse width duty ratio for adjusting PWM controller (1) is 0%, i.e. PWM controller
(1) low level is exported, field-effect tube V1 is made to turn off, that is to say, that so that two the endpoints M1 and M2 on series connection pair side is become and disconnects shape
State, secondary side no current of connecting flow through.The induction reactance of reactor L1, L2, L3 is maximum at this time, induction reactance value XL=2 π fL, wind-power electricity generation
The voltage that machine is sent out generates pressure drop on reactor L1, L2, L3, reduces the output voltage of wind-driven generator；Moreover wind-force is very
Wind-driven generator sends out the frequency f of voltage and can also increase when big, further increases the induction reactance value of reactor L1, L2, L3, in this way
The pressure drop that the voltage that wind-driven generator is sent out is generated in reactor L1, L2, L3 also further increases, and can more reduce wind-force
The output voltage of generator.
2), when wind-force is small, the output pulse width duty ratio for adjusting PWM controller (1) is 100%, i.e. PWM controls
Device (1) exports high level, and field-effect tube V1 is made to be connected, that is to say, that two the endpoints M1 and M2 on series connection pair side is made to become short circuit shape
Larger current is flowed through on state, secondary side of connecting in this way.The induction reactance value X of reactor L1, L2, L3 at this timeL=0, what wind-driven generator was sent out
The pressure drop that voltage is generated in reactor L1, L2, L3 is zero, all as output voltage.
3) when wind-force it is small with wind-force it is very big between change when, adjust the output pulse width duty of PWM controller (1)
Than changing between 100%~0%, the average current that secondary side is flowed through of connecting is accordingly from greatly to changing zero；When wind-force is smaller
Duty is relatively high, and duty is relatively low when wind-force is larger, and the induction reactance value of reactor L1, L2, L3 are automatically adjusted with this, maintains wind
The output voltage of power generator is more stable.
Because current transformer does not allow secondary side to open a way, it is connected between two the endpoints M1 and M2 on the secondary side of series connection in Fig. 2
One resistance R0.
The above is only the preferable implementation example of the present invention, is not made any form of restriction to invention, appointed
What those skilled in the art changed or be modified to possibly also with the technology contents of the disclosure above equivalent variations etc.
Embodiment is imitated, but it is every without departing from technical solution of the present invention content, according to the technical essence of the invention to above example institute
Any simple modification, equivalent change and modification of work, in the range of still falling within technical solution of the present invention.
Claims (5)
1. a kind of control module of wind-driven generator is applied to wind-power electricity generation, it is characterised in that：The control module is by three electricity
Anti- device L1, L2, L3 composition, reactor L1, L2, a L3 are respectively sealed in the end of the triple line packet of wind-driven generator, these three
The end of reactor is connected together as the neutral point of wind-driven generator；Reactor L1, L2, L3 respectively carry pair side L ' 1, L ' 2,
L ' 3 is together in series three pair side L ' 1, L ' 2, L ' 3, adjusts and flows through the size of the secondary side DC current of series connection to change reactor
The induction reactance size of L1, L2, L3；Using an electronic circuit, that is, PWM controller (1) come the induction reactance size to reactor L1, L2, L3
Realize automatic adjustment.
2. the control module of wind-driven generator as described in claim 1, it is characterised in that：Reactor L1 and pair side L ' 1, reactance
Device L2 and the secondary L ' 3 in L ' 2, reactor L3 and pair respectively form a current transformer, and reactor L1, L2, L3 may be regarded as electricity
The electrical parameter of the primary side of current transformer, these three current transformers is identical；Three pair side L ' 1, L ' 2,3 specific series systems of L '
It is：The beginning of the secondary L ' 2 in the end auxiliary connection of L ' 1, the beginning of the secondary L ' 3 in the end auxiliary connection of L ' 2, the beginning of secondary side L ' 1
The individually extraction of terminal M 2 of M1 and pair side L ' 3, M1 and M2 is held to become two endpoints on the secondary side of series connection.
3. the control module of wind-driven generator as described in claim 1, it is characterised in that：Two endpoint M1 on the secondary side of series connection and
Alternating voltage between M2 is rectified into direct current by rectifier bridge VC1, and anode connects the drain electrode of N-channel field-effect tube V1,
Cathode connects the source electrode of field-effect tube V1, the output of the grid connection PWM controller (1) of field-effect tube V1；The two of the secondary side of series connection
Resistance R0 is connected between a endpoint M1 and M2.
4. the control module of wind-driven generator as described in claim 1, it is characterised in that：There is detection in PWM controller (1)
Device can perceive the size of wind-force and accordingly export an electric signal, adjust the output pulse width duty ratio of PWM controller (1)
To adjust the size for the DC current for flowing through the secondary side of series connection；When wind-force is very big, the output pulse for adjusting PWM controller (1) is wide
It is 0% to spend duty ratio；When wind-force is small, the output pulse width duty ratio for adjusting PWM controller (1) is 100%；Work as wind-force
It is small with wind-force it is very big between change when, adjust the output pulse width duty ratio of PWM controller (1) 100%~0% it
Between change, duty is relatively high when wind-force is smaller, and duty is relatively low when wind-force is larger.
5. a kind of method controlling wind-driven generator using control module according to any one of claims 1-4, feature exist
In including the following steps：
End by the triple line packet of wind-driven generator per a phase line packet reactor of respectively connecting is interconnected in one again later
Rising becomes neutral point O；
It adjusts and flows through the size of the secondary side DC current of series connection to change the induction reactance size of reactor L1, L2, L3；
It is automatically adjusted using an electronic circuit, that is, PWM controller (1) to be realized to the induction reactance size of reactor L1, L2, L3；
There is detector in PWM controller (1), the size of wind-force can be perceived and accordingly export an electric signal, adjusts PWM controller
(1) output pulse width duty ratio adjusts the size for the DC current for flowing through the secondary side of series connection；
When wind-force is very big, the output pulse width duty ratio for adjusting PWM controller (1) is 0%；
When wind-force is small, the output pulse width duty ratio for adjusting PWM controller (1) is 100%；
When wind-force it is small with wind-force it is very big between change when, the output pulse width duty ratio for adjusting PWM controller (1) exists
Change between 100%~0%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510877652.8A CN105375841B (en) | 2015-12-04 | 2015-12-04 | A kind of control module of wind-driven generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510877652.8A CN105375841B (en) | 2015-12-04 | 2015-12-04 | A kind of control module of wind-driven generator |
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| CN105375841A CN105375841A (en) | 2016-03-02 |
| CN105375841B true CN105375841B (en) | 2018-07-24 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4893069A (en) * | 1988-06-29 | 1990-01-09 | Nishimu Electronics Industries Co., Ltd. | Ferroresonant three-phase constant AC voltage transformer arrangement with compensation for unbalanced loads |
| CN201118487Y (en) * | 2007-09-04 | 2008-09-17 | 郭思君 | High-voltage electromotor soft start control device |
| CN101378201A (en) * | 2008-10-10 | 2009-03-04 | 哈尔滨工业大学 | Passive control type wind power generation system capable of automatically tracking maximum wind energy |
| CN205430111U (en) * | 2015-12-04 | 2016-08-03 | 深圳市华杰电气技术有限公司 | Aerogenerator's control module group |
-
2015
- 2015-12-04 CN CN201510877652.8A patent/CN105375841B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4893069A (en) * | 1988-06-29 | 1990-01-09 | Nishimu Electronics Industries Co., Ltd. | Ferroresonant three-phase constant AC voltage transformer arrangement with compensation for unbalanced loads |
| CN201118487Y (en) * | 2007-09-04 | 2008-09-17 | 郭思君 | High-voltage electromotor soft start control device |
| CN101378201A (en) * | 2008-10-10 | 2009-03-04 | 哈尔滨工业大学 | Passive control type wind power generation system capable of automatically tracking maximum wind energy |
| CN205430111U (en) * | 2015-12-04 | 2016-08-03 | 深圳市华杰电气技术有限公司 | Aerogenerator's control module group |
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| CN105375841A (en) | 2016-03-02 |
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