CN102312774A - Pitch-withdrawing control system - Google Patents
Pitch-withdrawing control system Download PDFInfo
- Publication number
- CN102312774A CN102312774A CN201010215636XA CN201010215636A CN102312774A CN 102312774 A CN102312774 A CN 102312774A CN 201010215636X A CN201010215636X A CN 201010215636XA CN 201010215636 A CN201010215636 A CN 201010215636A CN 102312774 A CN102312774 A CN 102312774A
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- China
- Prior art keywords
- driver
- power supply
- motor
- limit switch
- blade
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- 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.)
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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
Abstract
The invention relates to a pitch-withdrawing control system, which comprises a main power supply, an emergency power supply, a driver, a motor, a transmission mechanism, a blade and a limit switch, wherein the motor is provided with an encoder; the main power supply is connected with the driver; the driver is connected with the motor; the motor is connected with the transmission mechanism; the transmission mechanism is connected with the blade; the emergency power supply is connected with the driver through a first switching switch; the emergency power supply is connected with the motor through a second switching switch; the encoder is connected with the driver; and the limit switch is arranged behind a pitch-withdrawing position of the blade. Compared with the prior art, the pitch-withdrawing control system has the advantages of consideration of various emergencies, complete functions, high reliability, high safety and the like.
Description
Technical field
The present invention relates to a kind of wind-driven generator, especially relate to a kind of control system of putting away the oars.
Background technique
The control system of putting away the oars of pitch-variable system is the main braking mechanism of wind-driven generator, and it is that blower fan safety, shutdown stably provide powerful guarantee.Therefore, the put away the oars reliability of control has material impact to the Security of blower fan.
Problems such as it is lower that the control of putting away the oars of present most of pitch-controlled systems exists level of security, and control mode is too concentrated have influenced the reliability that blower fan is put away the oars.
Summary of the invention
The object of the invention is exactly to provide a kind of consideration various emergency case for the defective that overcomes above-mentioned existing technology existence, Perfect in shape and function, the safe control system of putting away the oars.
The object of the invention can be realized through following technological scheme:
A kind of control system of putting away the oars is characterized in that, comprises primary power supply, standby power supply, driver, motor, driving mechanism, blade, limit switch; Described motor is provided with encoder, and described primary power supply links with driver, and described driver is connected with motor; Described motor is connected with driving mechanism; Described driving mechanism is connected with blade, and described standby power supply is connected with driver through first diverter switch, and described standby power supply is connected with motor through second diverter switch; Described encoder is connected with driver, and described limit switch is located at blade and receives back, slurry position.
Also comprise redundant limit switch, this redundancy limit switch is located at the back of limit switch.
Line between described limit switch and the blade rotation axle center, and the angle between the blade is 0.5 °～3 °.
Line between described redundant limit switch and the blade rotation axle center, and the angle of line is 2 °～5 ° between limit switch and the blade rotation axle center.
Compared with prior art, the present invention adopts the design of three level securities, adopts corresponding level of security to different failure conditions, can effectively accomplish the function of putting away the oars; Simultaneously, system adopts three independent control modes, effectively reduces the risk that control mechanism is made mistakes, the reliability and the integrity of the control system of putting away the oars that improves greatly.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is elaborated.
As shown in Figure 1, a kind of control system of putting away the oars comprises primary power supply 1, standby power supply 3, driver 2, motor 4, driving mechanism 6, blade 7, limit switch 8; Described motor 4 is provided with encoder 5, and described primary power supply 1 links with driver 2, and described driver 2 is connected with motor 4; Described motor 4 is connected with driving mechanism 6; Described driving mechanism 6 is connected with blade 7, and described standby power supply 3 is connected with driver 2 through first diverter switch 9, and described standby power supply 3 is connected with motor 4 through second diverter switch 10; Described encoder 5 is connected with driver 2, and described limit switch 8 is located at blade 7 and receives back, slurry position.
The present invention adopts the design of three level securities, and every grade of different system's control of design consideration requires to accomplish the operation of putting away the oars accordingly.This design method is considered various emergency case, Perfect in shape and function, reliability and safe.
1) normally put away the oars:
The system that is meant that normally puts away the oars carries out normal stopping process as required under the situation that fault-free takes place.The process of normally putting away the oars, is driven blade 7 and slowly returns 90 degree from current location through driving mechanism 6 by driver 2 drive motor 4, accomplishes the aerodynamic brake process of blower fan.This process is joined by primary power supply 1, driver 2, motor 4, encoder 5, driving mechanism 6 these several parts and is accomplished.
2) promptly put away the oars:
When system breaks down, need quick shutdown, promptly need promptly put away the oars.The process of promptly putting away the oars, is driven blade 7 and slowly returns 90 degree from current location through driving mechanism 6 by driver 2 drive motor.
This process is according to the difference of fault point, and used power supply is also different.If break down in the system outside of putting away the oars, the process of then putting away the oars is identical with the used method of normally putting away the oars, and is just quicker than normally putting away the oars; If the primary power supply of system 1 breaks down, then switch to standby power supply 3 power supply states through first diverter switch 9, directly supply power to accomplish to driver 2 dc buss by standby power supply 3 and promptly put away the oars.
3) open loop is put away the oars:
(main finger actuator 2 faults or encoder 5 faults) need carry out open loop and put away the oars when catastrophe failure takes place.When driver 2 or encoder 5 break down, be the internal fault of the system of putting away the oars, put away the oars and can't carry out this moment.To this situation, we adopt the method for directly supplying power for motor 4 to put away the oars.The open loop process of putting away the oars can not be controlled, and when blade receives that 90 can not stop when spending, so we are when installing a limit switch 8 when this switch triggering in 91 degree positions, and system gives motor 4 outages through breaking off second diverter switch 10, and pressure is stopped it.For anti-limit switch 8 faults here, we have installed a redundant limit switch again in 94 degree positions, guarantee the security of system shutdown.
For the reliability of enhanced system, reduce the degree of risk of fault point, we adopt separate control mode to three blades respectively, and three blades all can independently be put away the oars.Even the motor 4 of a blade or driving mechanism 6 break down like this, putting away the oars of other two blades also can be accomplished, and can play the aerodynamic brake function equally.
Claims (4)
1. the control system of putting away the oars is characterized in that, comprises primary power supply, standby power supply, driver, motor, driving mechanism, blade, limit switch; Described motor is provided with encoder, and described primary power supply links with driver, and described driver is connected with motor; Described motor is connected with driving mechanism; Described driving mechanism is connected with blade, and described standby power supply is connected with driver through first diverter switch, and described standby power supply is connected with motor through second diverter switch; Described encoder is connected with driver, and described limit switch is located at blade and receives back, slurry position.
2. a kind of control system of putting away the oars according to claim 1 is characterized in that also comprise redundant limit switch, this redundancy limit switch is located at the back of limit switch.
3. a kind of control system of putting away the oars according to claim 1 is characterized in that, line between described limit switch and the blade rotation axle center, and the angle between the blade is 0.5 °～3 °.
4. a kind of control system of putting away the oars according to claim 2 is characterized in that, line between described redundant limit switch and the blade rotation axle center, and the angle of line is 2 °～5 ° between limit switch and the blade rotation axle center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010215636XA CN102312774A (en) | 2010-06-29 | 2010-06-29 | Pitch-withdrawing control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010215636XA CN102312774A (en) | 2010-06-29 | 2010-06-29 | Pitch-withdrawing control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102312774A true CN102312774A (en) | 2012-01-11 |
Family
ID=45426258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010215636XA Pending CN102312774A (en) | 2010-06-29 | 2010-06-29 | Pitch-withdrawing control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102312774A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511182A (en) * | 2013-01-17 | 2014-01-15 | 成都阜特科技股份有限公司 | Direct current variable pitch control system of wind generating set |
| CN105257472A (en) * | 2015-11-06 | 2016-01-20 | 湘电风能有限公司 | Safety control method for direct-drive fan direct-current pitch varying system |
| CN109958587A (en) * | 2017-12-25 | 2019-07-02 | 江苏金风科技有限公司 | The electric control gear and system of the dehumidification equipment of offshore wind turbine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004005169B3 (en) * | 2004-02-02 | 2005-11-03 | Repower Systems Ag | Rotor blade pitch control system for wind turbine generating electricity has DC supply for motor with parallel-wound and series-wound field coils with diode bypassing series field coil during braking |
| EP2058939A1 (en) * | 2007-11-08 | 2009-05-13 | LTi REEnergy GmbH | Wind energy plant with control circuit for operation under limited speed and voltage source protection concerning a series wound DC pitch drive with generator torque |
| CN201507394U (en) * | 2009-09-28 | 2010-06-16 | 国网电力科学研究院 | Variable pitch control device for wind generating set |
| CN201835984U (en) * | 2010-06-29 | 2011-05-18 | 上海派恩科技有限公司 | Highly-reliable pitch control device |
-
2010
- 2010-06-29 CN CN201010215636XA patent/CN102312774A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004005169B3 (en) * | 2004-02-02 | 2005-11-03 | Repower Systems Ag | Rotor blade pitch control system for wind turbine generating electricity has DC supply for motor with parallel-wound and series-wound field coils with diode bypassing series field coil during braking |
| EP2058939A1 (en) * | 2007-11-08 | 2009-05-13 | LTi REEnergy GmbH | Wind energy plant with control circuit for operation under limited speed and voltage source protection concerning a series wound DC pitch drive with generator torque |
| CN201507394U (en) * | 2009-09-28 | 2010-06-16 | 国网电力科学研究院 | Variable pitch control device for wind generating set |
| CN201835984U (en) * | 2010-06-29 | 2011-05-18 | 上海派恩科技有限公司 | Highly-reliable pitch control device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511182A (en) * | 2013-01-17 | 2014-01-15 | 成都阜特科技股份有限公司 | Direct current variable pitch control system of wind generating set |
| CN103511182B (en) * | 2013-01-17 | 2016-07-06 | 成都阜特科技股份有限公司 | A kind of wind power generating set direct current variable pitch control system |
| CN105257472A (en) * | 2015-11-06 | 2016-01-20 | 湘电风能有限公司 | Safety control method for direct-drive fan direct-current pitch varying system |
| CN109958587A (en) * | 2017-12-25 | 2019-07-02 | 江苏金风科技有限公司 | The electric control gear and system of the dehumidification equipment of offshore wind turbine |
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Application publication date: 20120111 |