CN201050444Y - Wind-driven generator variable pitch control system - Google Patents
Wind-driven generator variable pitch control system Download PDFInfo
- Publication number
- CN201050444Y CN201050444Y CNU2007200379511U CN200720037951U CN201050444Y CN 201050444 Y CN201050444 Y CN 201050444Y CN U2007200379511 U CNU2007200379511 U CN U2007200379511U CN 200720037951 U CN200720037951 U CN 200720037951U CN 201050444 Y CN201050444 Y CN 201050444Y
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- direct current
- control
- cabinet
- current generator
- control unit
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The utility model provides a wind turbine variable propeller pitch control system, which is characterized in being composed of a central control cabinet, a plurality of shaft cabinets connected in parallel and controlled by the central control cabinet, a group of direct current motors controlled individually by every shaft cabinet and a transmission device. The central control cabinet comprises a PLC control unit and a control interface. The PLC control unit in the system of the utility model realizes a plurality of functions including blade angle position close loop, battery charge control, box temperature control and fault treatment; the signal a host computer sends to the PLC control unit is a single position signal. When the position signal dose not occur or mistake occurs, the PLC will recognize the situation as a fault and will send a command timely to adjust blower fans timely to a safe position, namely a feathering position, so that the control process is more simplified, and the reliability of the operation is enhanced. The blade is driven by the direct current motors; the control characteristic is more stable as the blade is in linear control.
Description
Technical field
The utility model relates to a kind of control system of wind-driven generator, relates in particular to a kind of control system for variable pitch of wind-driven generator.
Background technique
The wind power generating set that adopt to become the oar technology can be adjusted the propeller pitch angle of blade by the displacement system, optimizes exerting oneself of wind wheel, improves the characteristics of output power of wind energy conversion system, and eliminates because of the influence to power output of air density change and blade surface roughness.The pitch-controlled wind-driven generator group can initiatively reduce the blast that impeller is born in all-cis oar mode, have that the startup of unit performance is good, output power stable, set structure stressed little, shut down convenient and safe and advantage such as transportation lifting difficulty is little.In addition, can make blade be in the feathering state by pitch-controlled system, like this under situations such as unit breaks down, greatly reduce to act under the damped condition load in the transmission system, the thrust that simultaneously under the extreme wind speeds operating mode, reduces to bear on the wind wheel by feathering, thus the limit load that pylon bore reduced.In order to guarantee at reliable featherings of fortuitous event lower blade such as electrical breakdowns, need provide reliable back-up power to pitch-variable system, under the system cut-off situation, provide enough energy to pulp distance varying mechanism, make the blade feathering, guarantee the safety of unit.The patent No. is that 02144809.4 Chinese patent discloses a kind of " megawatt-level wind unit speed change, displacement control system ", and its shortcoming is that the hydraulic pressure installation leakage of oil can't be avoided, and causes certain pollution, and complex structure.
Summary of the invention
Technical problem to be solved in the utility model is at the deficiencies in the prior art, provide a kind of simple in structure, can ensure a kind of control system for variable pitch of wind-driven generator that becomes oar safety.
Technical problem to be solved in the utility model is to realize by following technological scheme.The utility model is a kind of control system for variable pitch of wind-driven generator, is characterized in,
It is by middle control cabinet, the one group of direct current generator and the transmission device of control constitute separately by the axle cabinet of several parallel connections of middle control cabinet control and by each cabinet;
The control cabinet comprises PLC (programmable controller) control unit and control interface in described;
Described axle cabinet is provided with motor driver, and motor driver connects protective circuit and drives direct current generator and transmission device; Also be provided with the charging circuit in parallel in the axle cabinet with motor driver, charging circuit one end connects with middle control cabinet, and the other end connects rechargeable battery set, and rechargeable battery set connects with protective circuit again, charging circuit is after the PLC control unit provides instruction, and the control rechargeable battery set is charged;
Described direct current generator output gear is provided with position transducer 1, also be provided with heat portective switch, temperature transducer and heater on the direct current generator, temperature transducer, heater and heat portective switch connect with the PLC control unit, when the low-temperature working condition, provide direct current generator armature assistant heating;
Described driving mechanism comprises retarder and actuation gear;
Control cabinet during upper-position unit (wind-driven generator main frame) is sent to position signal by control interface, after the position regulator of PLC control unit is handled, provide with-10V～+ the υ signal of 10V voltage form output, the υ signal is after the speed regulator of motor driver is handled, the U signal that provides with voltage form output drives direct current generator, the ω angular velocity signal of direct current generator output is exported ω after retarder slows down
1Angular velocity signal, the rotating shaft after the deceleration connect actuation gear drive blade and rotate, and blade is then by the ω that obtains
1Angular velocity signal becomes the oar running;
Being arranged on position signals that the position transducer 2 on the blade transmitting gear rotates blade in good time selects to feed back to the PLC control unit by encoder and handles; The position signal that position transducer 1 rotates motor shaft is selected to feed back to the PLC control unit by encoder and is handled, and forms position closed loop.
Technical problem to be solved in the utility model can also pass to following technological scheme and further realize.Above-described a kind of control system for variable pitch of wind-driven generator is characterized in, described position transducer 1 is an encoder 1, and described position transducer 2 is an encoder 2.
Technical problem to be solved in the utility model can also pass to following technological scheme and further realize.Above-described a kind of control system for variable pitch of wind-driven generator, be characterized in, also be provided with velocity transducer on the described direct current generator output gear, the ω angular velocity signal that velocity transducer is exported direct current generator feeds back to motor driver to be handled, and forms speed ring.
Technical problem to be solved in the utility model can also pass to following technological scheme and further realize.Above-described a kind of control system for variable pitch of wind-driven generator is characterized in, described velocity transducer is a tachometer generator.
In a kind of control system for variable pitch of wind-driven generator described in the utility model, described axle cabinet can several, and its number is general corresponding with the blade number, preferred 3.
Technical problem to be solved in the utility model can also pass to following technological scheme and further realize.Above-described a kind of control system for variable pitch of wind-driven generator; be characterized in that described rechargeable battery set is for being equipped with the non-maintaining chargeable cell with AGM technology, when urgency; rechargeable battery set is direct current generator and driving mechanism power supply by protective circuit.
Compared with prior art, the utility model control system has the following advantages:
1, the PLC control unit realizes having comprised multinomial functions such as blade angle position closed loop, battery charge control, spin manifold temperature control and fault treatment;
2, upper-position unit sends to the single position signal that is of PLC control unit, when position signal does not take place or mistake occurs, the PLC control unit is then thought fault, and make order fan blade is adjusted to home is feather position in good time, thereby its control program is more oversimplified, increased its reliability of operation;
3, several cabinets have all been adopted the same structure setting in the utility model, have realized the standardization and the generalization of axle cabinet, are convenient to management and safeguard;
4, the driving of blade is realized by direct current generator, owing to be linearity control, control characteristic is more stable, and therefore AC motor converter plant complex structure has in the past simplified motor driver to a great extent; Simultaneously, motor need be powered with the reserve battery power supply in urgency, and direct current generator has then omitted superfluous tired friendship/straight transformational structure, has promptly improved the Security and the reliability of system.
Description of drawings
Fig. 1 is a theory diagram of the present utility model;
Fig. 2 is a control block diagram of the present utility model;
Fig. 3 is the composition frame chart of direct current generator and driving mechanism in the utility model.
Embodiment
Embodiment 1.With reference to Fig. 1-Fig. 3.A kind of control system for variable pitch of wind-driven generator,
It is by middle control cabinet, the one group of direct current generator and the transmission device of control constitute separately by the axle cabinet of several parallel connections of middle control cabinet control and by each cabinet;
The control cabinet comprises PLC control unit and control interface in described;
Described axle cabinet is provided with motor driver, and motor driver connects protective circuit and drives direct current generator and transmission device; Also be provided with the charging circuit in parallel in the axle cabinet with motor driver, charging circuit one end connects with middle control cabinet, and the other end connects rechargeable battery set, and rechargeable battery set connects with protective circuit again, charging circuit is after the PLC control unit provides instruction, and the control rechargeable battery set is charged;
Described direct current generator output gear is provided with position transducer 1, also be provided with heat portective switch, temperature transducer and heater on the direct current generator, temperature transducer, heater and heat portective switch connect with the PLC control unit, when the low-temperature working condition, provide direct current generator armature assistant heating;
Described driving mechanism comprises retarder and actuation gear;
Control cabinet during upper-position unit is sent to position signal by control interface, after the position regulator of PLC control unit is handled, provide with-10V～+ the υ signal of 10V voltage form output, the υ signal is after the speed regulator of motor driver is handled, the U signal that provides with voltage form output drives direct current generator, the ω angular velocity signal of direct current generator output is exported ω after retarder slows down
1Angular velocity signal, the rotating shaft after the deceleration connect actuation gear drive blade and rotate, and blade is then by the ω that obtains
1Angular velocity signal becomes the oar running;
Being arranged on position signals that the position transducer 2 on the blade transmitting gear rotates blade in good time selects to feed back to the PLC control unit by encoder and handles; The position signal that position transducer 1 rotates motor shaft is selected to feed back to the PLC control unit by encoder and is handled, and forms position closed loop.
When proper functioning, the PLC control unit links with charging circuit, motor driver and motor and transmission device etc. by control interface, finishes to become oar control.
The position closed loop that becomes the oar control loop is realized by the PLC control unit: the PLC control unit is accepted from position transducer 2 signals (position sensor 1 is as redundant signals in addition), the change vane angle degree signal given with upper-position unit is that the position order compares, and sends the motor speed instruction by the position regulator that adopts PID controller mode to motor driver.
When power supply and upper-position unit any one or when breaking down simultaneously, pitch-controlled system is powered with rechargeable battery set, by the PLC control unit, drive direct current generator, begin rotor blade with fixed speed, arrive home always, give the PLC control unit by the position sensor feedback signal again, brake by spragging gear thereby send instruction.
Embodiment 2.In embodiment 1, described position transducer 1 is an encoder 1, and described position transducer 2 is an encoder 2.
Embodiment 3.In embodiment 1, also be provided with velocity transducer on the described direct current generator output gear, the ω angular velocity signal that velocity transducer is exported direct current generator feeds back to motor driver to be handled, and forms speed ring.
Embodiment 4.In embodiment 2, also be provided with velocity transducer on the described direct current generator output gear, the ω angular velocity signal that velocity transducer is exported direct current generator feeds back to motor driver to be handled, and forms speed ring.
When proper functioning, the PLC control unit links with charging circuit, motor driver and motor and transmission device etc. by control interface, finishes to become oar control.
The position closed loop that becomes the oar control loop is realized by the PLC control unit: the PLC control unit is accepted from absolute value encoder 2 signals (absolute value encoder 1 being arranged in addition as redundant signals), the change vane angle degree signal given with upper-position unit is that the position order compares, and sends the motor speed instruction by the position regulator that adopts PID controller mode to motor driver.
Speed ring is realized by motor driver: motor driver receives the rotating speed order of PLC control unit, relatively realize speed closed loop with the speed sensor signal on the motor shaft through the speed regulator effect of employing PID controller mode, speed regulator output is through pulsewidth modulation power amplification link, produce the armature voltage U that needs, the driving direct current generator rotates, the direct current arbor links to each other with retarder, and the rotating shaft after the deceleration connects actuation gear drive blade and rotates.
When power supply and upper-position unit any one or when breaking down simultaneously, pitch-controlled system is powered with rechargeable battery set, by the PLC control unit, drive direct current generator, begin rotor blade with fixed speed, arrive home always, give the PLC control unit by the position sensor feedback signal again, brake by spragging gear thereby send instruction.
Embodiment 5.In embodiment 4, described velocity transducer is a tachometer generator.
Embodiment 6.In embodiment 1, described axle cabinet is 3.
Embodiment 7.In embodiment 1 or 3, described rechargeable battery set is for being equipped with the non-maintaining chargeable cell with AGM technology, and when urgency, rechargeable battery set is direct current generator and driving mechanism power supply by protective circuit.
Claims (6)
1. a control system for variable pitch of wind-driven generator is characterized in that,
It is by middle control cabinet, the one group of direct current generator and the transmission device of control constitute separately by the axle cabinet of several parallel connections of middle control cabinet control and by each cabinet;
The control cabinet comprises PLC control unit and control interface in described;
Described axle cabinet is provided with motor driver, and motor driver connects protective circuit and drives direct current generator and transmission device; Also be provided with the charging circuit in parallel in the axle cabinet with motor driver, charging circuit one end connects with middle control cabinet, and the other end connects rechargeable battery set, and rechargeable battery set connects with protective circuit again, charging circuit is after the PLC control unit provides instruction, and the control rechargeable battery set is charged;
Described direct current generator output gear is provided with position transducer 1, also be provided with heat portective switch, temperature transducer and heater on the direct current generator, temperature transducer, heater and heat portective switch connect with the PLC control unit, when the low-temperature working condition, provide direct current generator armature assistant heating;
Described driving mechanism comprises retarder and actuation gear;
Control cabinet during upper-position unit is sent to position signal by control interface, after the position regulator of PLC control unit is handled, provide with-10V～+ the υ signal of 10V voltage form output, the υ signal is after the speed regulator of motor driver is handled, the U signal that provides with voltage form output drives direct current generator, the ω angular velocity signal of direct current generator output is exported ω after retarder slows down
1Angular velocity signal, the rotating shaft after the deceleration connect actuation gear drive blade and rotate, and blade is then by the ω that obtains
1Angular velocity signal becomes the oar running;
Being arranged on position signals that the position transducer 2 on the blade transmitting gear rotates blade in good time selects to feed back to the PLC control unit by encoder and handles; The position signal that position transducer 1 rotates motor shaft is selected to feed back to the PLC control unit by encoder and is handled, and forms position closed loop.
2. a kind of control system for variable pitch of wind-driven generator according to claim 1 is characterized in that,
Described position transducer 1 is an encoder 1, and described position transducer 2 is an encoder 2.
3. a kind of control system for variable pitch of wind-driven generator according to claim 1 and 2, it is characterized in that, also be provided with velocity transducer on the described direct current generator output gear, the ω angular velocity signal that velocity transducer is exported direct current generator feeds back to motor driver to be handled, and forms speed ring.
4. a kind of control system for variable pitch of wind-driven generator according to claim 3 is characterized in that,
Described velocity transducer is a tachometer generator.
5. a kind of control system for variable pitch of wind-driven generator according to claim 1 is characterized in that,
Described axle cabinet is 3.
6. a kind of control system for variable pitch of wind-driven generator according to claim 1 is characterized in that,
Described rechargeable battery set is for being equipped with the non-maintaining chargeable cell with AGM technology, and when urgency, rechargeable battery set is direct current generator and driving mechanism power supply by protective circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200379511U CN201050444Y (en) | 2007-05-23 | 2007-05-23 | Wind-driven generator variable pitch control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200379511U CN201050444Y (en) | 2007-05-23 | 2007-05-23 | Wind-driven generator variable pitch control system |
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| Publication Number | Publication Date |
|---|---|
| CN201050444Y true CN201050444Y (en) | 2008-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200379511U Expired - Lifetime CN201050444Y (en) | 2007-05-23 | 2007-05-23 | Wind-driven generator variable pitch control system |
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| CN (1) | CN201050444Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956657A (en) * | 2010-09-27 | 2011-01-26 | 浙江众科自动化工程科技有限公司 | Megawatt wind power generation master control system |
| CN102121454A (en) * | 2011-01-30 | 2011-07-13 | 北京和利时自动化驱动技术有限公司 | Wind power generation variable propeller driver and method |
| CN102148530A (en) * | 2011-03-02 | 2011-08-10 | 新疆金风科技股份有限公司 | Pitch control device for wind generating set and wind generating set |
| CN101311527B (en) * | 2007-05-23 | 2012-10-03 | 连云港杰瑞电子有限公司 | Pitch control system of wind mill generator |
| CN103023407A (en) * | 2011-09-20 | 2013-04-03 | 株式会社日立制作所 | A wind power generation system |
| CN103036485A (en) * | 2012-12-03 | 2013-04-10 | 北京科诺伟业科技有限公司 | Permanent magnet direct current motor start impact current suppression device and suppression method thereof |
| CN103501144A (en) * | 2013-09-18 | 2014-01-08 | 宁波杜亚机电技术有限公司 | Method for controlling speed of motor |
| CN105134510A (en) * | 2015-09-18 | 2015-12-09 | 北京中恒博瑞数字电力科技有限公司 | State monitoring and failure diagnosis method for wind generating set variable pitch system |
| CN113048009A (en) * | 2019-12-27 | 2021-06-29 | 新疆金风科技股份有限公司 | Variable pitch control method, device and system of wind generating set |
-
2007
- 2007-05-23 CN CNU2007200379511U patent/CN201050444Y/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101311527B (en) * | 2007-05-23 | 2012-10-03 | 连云港杰瑞电子有限公司 | Pitch control system of wind mill generator |
| CN101956657A (en) * | 2010-09-27 | 2011-01-26 | 浙江众科自动化工程科技有限公司 | Megawatt wind power generation master control system |
| CN102121454A (en) * | 2011-01-30 | 2011-07-13 | 北京和利时自动化驱动技术有限公司 | Wind power generation variable propeller driver and method |
| CN102121454B (en) * | 2011-01-30 | 2012-11-28 | 北京和利时自动化驱动技术有限公司 | Wind power generation variable propeller driver and method |
| CN102148530A (en) * | 2011-03-02 | 2011-08-10 | 新疆金风科技股份有限公司 | Pitch control device for wind generating set and wind generating set |
| CN103023407A (en) * | 2011-09-20 | 2013-04-03 | 株式会社日立制作所 | A wind power generation system |
| CN103023407B (en) * | 2011-09-20 | 2016-01-06 | 株式会社日立制作所 | Wind generator system |
| CN103036485A (en) * | 2012-12-03 | 2013-04-10 | 北京科诺伟业科技有限公司 | Permanent magnet direct current motor start impact current suppression device and suppression method thereof |
| CN103501144A (en) * | 2013-09-18 | 2014-01-08 | 宁波杜亚机电技术有限公司 | Method for controlling speed of motor |
| CN105134510A (en) * | 2015-09-18 | 2015-12-09 | 北京中恒博瑞数字电力科技有限公司 | State monitoring and failure diagnosis method for wind generating set variable pitch system |
| CN113048009A (en) * | 2019-12-27 | 2021-06-29 | 新疆金风科技股份有限公司 | Variable pitch control method, device and system of wind generating set |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20080423 Effective date of abandoning: 20070523 |
|
| RGAV | Abandon patent right to avoid regrant |