CN102828905A - Safe and reliable alternating-current variable-pitch control system - Google Patents

Safe and reliable alternating-current variable-pitch control system Download PDF

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Publication number
CN102828905A
CN102828905A CN2011101573562A CN201110157356A CN102828905A CN 102828905 A CN102828905 A CN 102828905A CN 2011101573562 A CN2011101573562 A CN 2011101573562A CN 201110157356 A CN201110157356 A CN 201110157356A CN 102828905 A CN102828905 A CN 102828905A
Authority
CN
China
Prior art keywords
contactor
driver
phase alternating
current motor
output terminal
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
Application number
CN2011101573562A
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Chinese (zh)
Inventor
杨再名
傅建民
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Reenergy Electric Suzhou Co Ltd
Original Assignee
Reenergy Electric Suzhou Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Reenergy Electric Suzhou Co Ltd filed Critical Reenergy Electric Suzhou Co Ltd
Priority to CN2011101573562A priority Critical patent/CN102828905A/en
Publication of CN102828905A publication Critical patent/CN102828905A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • 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

Abstract

The invention discloses a safe and reliable alternating-current variable-pitch control system, comprising a driver; an output end of the driver is connected with a three-phase alternating-current motor; a main power input end of the driver is connected with an output end of a first contactor through a power grid; the first contactor is connected with a second contactor in parallel; the output end of the first contactor is connected with a resistance input end; a resistance output end is connected with the output end of the second contactor and then is connected with the main power input end of the driver; the system further comprises a backup battery which is connected with a battery input end of the driver; the three-phase alternating-current motor is connected with the power grid by a third contactor; the input end of the third contactor is connected with the power grid; and the output end of the third contactor is connected with the three-phase alternating-current motor. The system realizes the emergency blade-return, thereby ensuring the safety of the alternating-current variable-pitch system.

Description

A kind of interchange variable blade control system of safety and stability
Technical field
The present invention relates to a kind of interchange variable blade control system of safety and stability, be applied to the wind power technology field.
Background technique
At present, in exchanging variable blade control system, driver directly drives the AC motor operation, and back-up power, can not promptly be put away the oars under the situation that driver breaks down as last safety guarantee, makes blade be in home.Can make rotation speed of fan too high like this, cause blower fan to collapse or risk that blade damages.
Usually, system is in running, and under the situation that arbitrary driver breaks down, two driver drives motors run to home in addition, thereby guarantees that it is safe having two blades at least in the whole system.But under the situation that three drivers all break down, system just can not promptly put away the oars, and blade can not be got back to home, and there is very big potential safety hazard in this concerning whole blower fan.
Summary of the invention
The present invention has proposed a kind of interchange variable blade control system of safety and stability in order to solve this technical problem.
The object of the invention will be achieved through following technological scheme:
A kind of interchange variable blade control system of safety and stability; Comprise driver, said output end of driver is connected with a three phase alternating current motor, and the primary power supply input end of said driver is connected with the output terminal of electrical network through first contactor; Said first contactor is parallelly connected with second contactor; The output terminal of said first contactor is connected with the resistance input end, and the resistance output terminal is connected the back and is connected with driver primary power supply input end with the output terminal of said second contactor, and system also comprises a backup battery; Said backup battery is connected with the cell input terminal of driver; Said three phase alternating current motor is connected through the 3rd contactor with electrical network, and the input end of said the 3rd contactor is connected with electrical network, and the output terminal of said the 3rd contactor is connected with three phase alternating current motor.
Preferably; Said output end of driver is connected through the 4th contactor with three phase alternating current motor; Said output end of driver is connected with the input end of the 4th contactor; The output terminal of said the 4th contactor is connected with three phase alternating current motor, and the output terminal of said the 3rd contactor is connected with three phase alternating current motor with after the output terminal of said the 4th contactor is connected again.
Beneficial effect of the present invention is mainly reflected in: when driver broke down, electrical network still can directly be supplied power to three phase alternating current motor through the 4th contactor, thereby realized promptly putting away the oars, and guaranteed to exchange the safety of pitch-controlled system.
Description of drawings
Fig. 1 is an electrical principle schematic representation of the present invention.
Embodiment
As shown in Figure 1; The invention provides a kind of interchange variable blade control system of safety and stability; Comprise driver 1A1; Three output terminals A 1 of said driver 1A1, A2, A3 are connected with a three phase alternating current motor 12; Three primary power supply input end L1 of said driver 1A1, L2, L3 are connected with the output terminal of electrical network through the first contactor 1K1; The said first contactor 1K1 is parallelly connected with the second contactor 1K2, and three output terminals of the said first contactor 1K1 are connected with three resistance 1R1,1R2,1R3 input end respectively, resistance R 1, R2, R3 output terminal and be connected with three primary power supply input end L1, L2, the L3 of driver 1A1 after the output terminal of the said second contactor 1K2 is connected again; Electrical network enters into driver 1A1 again through the first contactor 1K1 and the second contactor 1K2; What drive three phase alternating current motor 12 formation is main circuit power supply, and the first contactor 1K1 is in order to prevent the moment impact of line voltage when giving driver 1A1 power supply with resistance 1R1,1R2, being connected of 1R3, so be connected to form the bypass effect.The loop that the second contactor 1K2 forms lags behind the loop that the first contactor 1K1 forms.
System also comprises a backup battery, and the both positive and negative polarity of said backup battery is connected with the battery plus-negative plate input end UD of driver 1A1 respectively, and behind grid cut-off, backup battery is given driver 1A1 power supply.
Said three phase alternating current motor 12 is connected through the 3rd contactor 1K3 with electrical network, and the input end of said the 3rd contactor 1K1 is connected with electrical network, and the output terminal of said the 3rd contactor 1K1 is connected with three phase alternating current motor 12.
The output terminal of said driver 1A1 is connected through the 4th contactor 1K4 with three phase alternating current motor 12; The output terminal of said driver 1A1 is connected with the input end of the 4th contactor 1K4; The output terminal of said the 4th contactor 1K4 is connected with three phase alternating current motor 12; The output terminal of said the 3rd contactor 1K3 is connected with three phase alternating current motor 12 with after the output terminal of said the 4th contactor 1K4 is connected again.
Particularly; The first contactor 1K1 and the second contactor 1K2 are closed; Electrical network is given driver 1A1 power supply through the first contactor 1K1 and the second contactor 1K2; Driver 1A1 gives three phase alternating current motor 12 power supplies through output terminals A 1, A2, A3 output voltage, after the 4th contactor 1K4 closure, and three phase alternating current motor 12 runnings.When driver broke down, promptly the 4th contactor 1K4 loop was broken off, and at this moment, the 3rd contactor 1K3 is closed, and line voltage makes its running for three phase alternating current motor 12 power supplies, and gets back to home through the closure in the 3rd contactor 1K3 loop.Reliable, the safety and stable of system have been guaranteed.
The present invention still has numerous embodiments, and all employing equivalents or equivalent transformation and all technological schemes of forming all drop within protection scope of the present invention.

Claims (2)

1. the interchange variable blade control system of a safety and stability; Comprise driver, said output end of driver is connected with a three phase alternating current motor, and the primary power supply input end of said driver is connected with the output terminal of electrical network through first contactor; Said first contactor is parallelly connected with second contactor; The output terminal of said first contactor is connected with the resistance input end, and the resistance output terminal is connected the back and is connected with driver primary power supply input end with the output terminal of said second contactor, and system also comprises a backup battery; Said backup battery is connected with the cell input terminal of driver; It is characterized in that: said three phase alternating current motor is connected through the 3rd contactor with electrical network, and the input end of said the 3rd contactor is connected with electrical network, and the output terminal of said the 3rd contactor is connected with three phase alternating current motor.
2. the interchange variable blade control system of a kind of safety and stability as claimed in claim 1; It is characterized in that: said output end of driver is connected through the 4th contactor with three phase alternating current motor; Said output end of driver is connected with the input end of the 4th contactor; The output terminal of said the 4th contactor is connected with three phase alternating current motor, and the output terminal of said the 3rd contactor is connected with three phase alternating current motor with after the output terminal of said the 4th contactor is connected again.
CN2011101573562A 2011-06-13 2011-06-13 Safe and reliable alternating-current variable-pitch control system Pending CN102828905A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011101573562A CN102828905A (en) 2011-06-13 2011-06-13 Safe and reliable alternating-current variable-pitch control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011101573562A CN102828905A (en) 2011-06-13 2011-06-13 Safe and reliable alternating-current variable-pitch control system

Publications (1)

Publication Number Publication Date
CN102828905A true CN102828905A (en) 2012-12-19

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011101573562A Pending CN102828905A (en) 2011-06-13 2011-06-13 Safe and reliable alternating-current variable-pitch control system

Country Status (1)

Country Link
CN (1) CN102828905A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103410661A (en) * 2013-07-12 2013-11-27 湘潭世优电气有限公司 Blade collecting device of alternating current variable pitch control system
CN104608649A (en) * 2015-02-06 2015-05-13 山东大学 Integrated type electrical vehicle electrical energy conversion system
CN111852768A (en) * 2020-07-13 2020-10-30 青岛池华电气科技有限公司 System and method for controlling power grid side autonomous emergency feathering of variable pitch system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090155075A1 (en) * 2007-12-14 2009-06-18 Industrial Technology Research Institute Blade pitch driving apparatus for wind driven generator
CN101790639A (en) * 2007-05-04 2010-07-28 英格蒂姆能源有限公司 The pitch control system and the method that are used for wind turbine
CN101915206A (en) * 2010-08-09 2010-12-15 重庆科凯前卫风电设备有限责任公司 Variable pitch control unit and device thereof for wind driven generator
CN101964539A (en) * 2010-08-14 2011-02-02 东方电气集团东方汽轮机有限公司 Relay protection device of variable pitch blade system of wind driven generator
CN202108662U (en) * 2011-06-13 2012-01-11 苏州能健电气有限公司 Safe and stable alternating-current propeller change control system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101790639A (en) * 2007-05-04 2010-07-28 英格蒂姆能源有限公司 The pitch control system and the method that are used for wind turbine
US20090155075A1 (en) * 2007-12-14 2009-06-18 Industrial Technology Research Institute Blade pitch driving apparatus for wind driven generator
CN101915206A (en) * 2010-08-09 2010-12-15 重庆科凯前卫风电设备有限责任公司 Variable pitch control unit and device thereof for wind driven generator
CN101964539A (en) * 2010-08-14 2011-02-02 东方电气集团东方汽轮机有限公司 Relay protection device of variable pitch blade system of wind driven generator
CN202108662U (en) * 2011-06-13 2012-01-11 苏州能健电气有限公司 Safe and stable alternating-current propeller change control system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103410661A (en) * 2013-07-12 2013-11-27 湘潭世优电气有限公司 Blade collecting device of alternating current variable pitch control system
CN103410661B (en) * 2013-07-12 2015-11-11 湖南世优电气股份有限公司 A kind of device of putting away the oars exchanging variable-pitch control system
CN104608649A (en) * 2015-02-06 2015-05-13 山东大学 Integrated type electrical vehicle electrical energy conversion system
CN111852768A (en) * 2020-07-13 2020-10-30 青岛池华电气科技有限公司 System and method for controlling power grid side autonomous emergency feathering of variable pitch system
CN111852768B (en) * 2020-07-13 2024-02-27 青岛池华电气科技有限公司 Autonomous emergency feathering control system and method for power grid side of pitch control system

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Application publication date: 20121219