CN104348391A - Distributed low-air speed permanent magnet direct-driven wind driven generator system - Google Patents

Distributed low-air speed permanent magnet direct-driven wind driven generator system Download PDF

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Publication number
CN104348391A
CN104348391A CN201310340565.XA CN201310340565A CN104348391A CN 104348391 A CN104348391 A CN 104348391A CN 201310340565 A CN201310340565 A CN 201310340565A CN 104348391 A CN104348391 A CN 104348391A
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CN
China
Prior art keywords
wind
generator
permanent magnet
current transformer
storage battery
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
CN201310340565.XA
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Chinese (zh)
Inventor
吕先明
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.)
WANDE WIND POWER GENERATION CO Ltd SHANGHAI
Original Assignee
WANDE WIND POWER GENERATION CO Ltd SHANGHAI
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Filing date
Publication date
Application filed by WANDE WIND POWER GENERATION CO Ltd SHANGHAI filed Critical WANDE WIND POWER GENERATION CO Ltd SHANGHAI
Priority to CN201310340565.XA priority Critical patent/CN104348391A/en
Publication of CN104348391A publication Critical patent/CN104348391A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P9/00Arrangements for controlling electric generators for the purpose of obtaining a desired output

Abstract

The invention relates to a distributed low-air speed permanent magnet direct-driven wind driven generator system. The wind driven generator system comprises a wind driven generating set, a storage battery and a start power assisting system, wherein the storage battery is used for storing electric energy generated by the wind driven generating set; the start power assisting system comprises a current transformer and a start control circuit; one end of the current transformer is connected with the wind driven generating set; the other end of the current transformer is connected with the storage battery by the start control circuit. Compared with the prior art, the wind driven generator system has the advantages that the lowest start air speed of a wind driven generator can be reduced, and the utilization rate of a wind energy resource can be improved.

Description

A kind of distributed low wind speed permanent magnet direct-driving aerogenerator system
Technical field
The present invention relates to a kind of wind generator system, especially relate to a kind of distributed low wind speed permanent magnet direct-driving aerogenerator system.
Background technology
Low wind speed wind field and low wind speed blower fan are that wind-powered electricity generation industry inside can utilize district to wind energy resources, i.e. wind-resources III class district (comprising indivedual places in the poor wind-resources IV class district of the wind energy resources) wind energy turbine set of building and be applicable to the popular call of one of blower fan of III class low wind speed wind field.
Also have experts and scholars think 10m height condition under, the region of general annual mean wind speed≤5.8m/s can be commonly referred to as low wind speed district.
Media are said, and " low wind speed wind-powered electricity generation refers to that wind speed is between 6 to 8 meter per seconds, the Wind Power Generation project of annual utilization hours below 2000 hours." be inaccurate, unscientific.
Include the wind energy resources that wind energy can utilize the better place of some wind-resources in region (III ~ IV class resource-area) inside China's 10.8 hundred million kilowatts of technical exploitation amount.And China's wind energy can utilize district's area to be the maximum district of area in wind-resources district of China, according to statistics, the available low wind speed resource area in nationwide accounts for 68% of national wind energy resources district, due to this district just in certain season wind energy comparatively large, therefore be also called Wind Power Utilization in season district.
This regional wind energy concentration is 50 ~ 150W.There is 2000 ~ 4000h the time being more than or equal to 3m/s wind speed every year; There is 500 ~ 1500h the time being more than or equal to 6m/s wind speed every year.This area is the widest at China's distribution area, comprises following area.
(1) Guangdong and Guangxi Provinces are coastal, comprise the coastal area of Fujian bank 50 ~ 100km off sea.Winter, wind energy was large, and autumn takes second place.
(2) large mountain area, the Xiaoxinanlin Mountains, wind energy concentration is increased to 150W southwards by the 50W on north, and the hourage that annual wind speed is more than or equal to 6m/s is increased to 1500h southwards by the 750h on north.
(3) east is from Base of Liaohe Plain westwards, crosses North China llanura through northwest to westernmost end, left side around Tibet plateau marginal portion, right side from North China to Huaihe River in the south, the Changjiang river to Nan Ling.
Well-known due to effect of inertia, moment of resistance when initial torque (staring torque) is greater than operation when wind-driven generator starts.Therefore the starting wind velocity of wind turbine generator is greater than minimum operation wind speed, and so a part of low wind speed resource is wasted.For the utilizable wind energy resources that puts everything to its best use, particularly the distributed wind power system overwhelming majority build wind speed lower ground district in, and low wind speed resource is just more valuable, is just necessary so reduce starting wind velocity.Simultaneously
Summary of the invention
Object of the present invention is exactly provide a kind of distributed low wind speed permanent magnet direct-driving aerogenerator system to overcome defect that above-mentioned prior art exists, and this system can reduce the minimum starting wind velocity of wind-driven generator, improves the utilance of wind energy resources.
Object of the present invention can be achieved through the following technical solutions:
A kind of distributed low wind speed permanent magnet direct-driving aerogenerator system, this wind generator system comprise wind turbine generator and for store wind turbine generator produce the storage battery of electric energy, described wind generator system also comprises starting force aid system, this starting force aid system comprises current transformer and start control circuit, current transformer one end connects wind turbine generator, and the other end is connected with storage battery by start control circuit;
When wind speed reaches the starting wind velocity of setting, storage battery and current transformer are connected by start control circuit, the wind wheel of wind turbine generator is driven to rotate, when after the minimum speed that wind wheel reaches needed for normal operation, current transformer and storage battery disconnect, stop the wind wheel driving wind turbine generator, by wind turbine generator and to storage battery or electrical network output electric energy.
Described wind turbine generator adopts permanent magnet direct-drive generator.
Described current transformer is the two-way PWM converter of back-to-back type.
Compared with prior art, the present invention starts force aid system by design, wind-driven generator can be started under lower wind speed, thus improve the utilance of wind energy resources, adopt permanent magnet direct-drive generator simultaneously, as long as make native system have wind field to exist, i.e. sustainable generating, overcome asynchronous wind driven generator and dual-feed asynchronous wind power generator when grid power blackout, the problem that cannot generate electricity due to exciting current cannot be obtained.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
As shown in Figure 1, a kind of distributed low wind speed permanent magnet direct-driving aerogenerator system, this wind generator system comprise wind turbine generator 1 and for store wind turbine generator produce the storage battery 2 of electric energy.The feature of this system is as follows:
1, wind turbine generator adopts permanent magnet direct-drive generator.
Because asynchronous wind driven generator and dual-feed asynchronous wind power generator are separate excitation type excitation generators, separate excitation type excitation generator needs to provide exciting current to set up magnetic field by electrical network, could generate electricity.So when grid power blackout, asynchronous wind driven generator and dual-feed asynchronous wind power generator are owing to obtaining exciting current, no matter wind-force is fine at that time, also can only stop generating.
But permanent magnet direct-drive generator itself has permanent-magnetic field, there is independent excitation magnetic field, do not need electrical network to provide exciting current to set up excitation field, that is when grid power blackout, as long as wind field continues there is wind, still can as usual generate electricity.
2, starting force aid system is added.
This starting force aid system comprises current transformer 3 and start control circuit 4, and current transformer 3 one end connects wind turbine generator 1, and the other end is connected with storage battery 2 by start control circuit 4.When wind speed reaches starting wind velocity (such as the 2m/s) of setting, storage battery 2 and current transformer 3 are connected by start control circuit, now permanent magnet direct-drive generator operation is at electric motor state, drive the wind wheel of generating set to rotate, such blower fan can be just smooth starting at the starting wind velocity of setting.After wind wheel reaches the minimum speed needed for normally running, rest inertia is overcome, and start control circuit 4 controls current transformer 3 and disconnects with storage battery 2, stops the wind wheel driving wind turbine generator, by wind turbine generator and to storage battery or electrical network output electric energy.
In addition, native system current transformer 3 is the two-way PWM converter of back-to-back type, and this kind of current transformer itself has the ability to motor or electrical network bidirectional power supply, without the need to increasing hardware facility.And adopt the current transformer of his form.Then need to set up inverter again to the special auxiliary circuit of generator powered, be automatically switched on or switched off by starter controller.

Claims (3)

1. a distributed low wind speed permanent magnet direct-driving aerogenerator system, this wind generator system comprise wind turbine generator and for store wind turbine generator produce the storage battery of electric energy, it is characterized in that, described wind generator system also comprises starting force aid system, this starting force aid system comprises current transformer and start control circuit, current transformer one end connects wind turbine generator, and the other end is connected with storage battery by start control circuit;
When wind speed reaches the starting wind velocity of setting, storage battery and current transformer are connected by start control circuit, the wind wheel of wind turbine generator is driven to rotate, when after the minimum speed that wind wheel reaches needed for normal operation, current transformer and storage battery disconnect, stop the wind wheel driving wind turbine generator, by wind turbine generator and to storage battery or electrical network output electric energy.
2. the distributed low wind speed permanent magnet direct-driving aerogenerator system of one according to claim 1, is characterized in that, described wind turbine generator adopts permanent magnet direct-drive generator.
3. the distributed low wind speed permanent magnet direct-driving aerogenerator system of one according to claim 1, it is characterized in that, described current transformer is the two-way PWM converter of back-to-back type.
CN201310340565.XA 2013-08-06 2013-08-06 Distributed low-air speed permanent magnet direct-driven wind driven generator system Pending CN104348391A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310340565.XA CN104348391A (en) 2013-08-06 2013-08-06 Distributed low-air speed permanent magnet direct-driven wind driven generator system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310340565.XA CN104348391A (en) 2013-08-06 2013-08-06 Distributed low-air speed permanent magnet direct-driven wind driven generator system

Publications (1)

Publication Number Publication Date
CN104348391A true CN104348391A (en) 2015-02-11

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110475968A (en) * 2017-01-19 2019-11-19 森维安有限公司 Method for rotating the rotor of wind energy conversion system

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JPH08322298A (en) * 1995-05-24 1996-12-03 Yamaha Motor Co Ltd Wind power generating apparatus
CN201425001Y (en) * 2009-06-09 2010-03-17 上海万德风力发电股份有限公司 1.5-MW permanent magnet direct-drive wind-driven power generator unit
CN101950977A (en) * 2010-09-01 2011-01-19 北京清能华福风电技术有限公司 Method for realizing low-wind speed startup of permanent magnet wind turbine generator
KR20120100228A (en) * 2011-03-03 2012-09-12 엘에스전선 주식회사 Double-sided converter for initial operating in wind turbine, apparatus and method for initial operating using the same
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CN103187914A (en) * 2013-04-19 2013-07-03 三垦力达电气(江阴)有限公司 Power generation system based on brushless double-fed generator and excitation method for power generation system
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Publication number Priority date Publication date Assignee Title
JPH08322298A (en) * 1995-05-24 1996-12-03 Yamaha Motor Co Ltd Wind power generating apparatus
CN201425001Y (en) * 2009-06-09 2010-03-17 上海万德风力发电股份有限公司 1.5-MW permanent magnet direct-drive wind-driven power generator unit
CN101950977A (en) * 2010-09-01 2011-01-19 北京清能华福风电技术有限公司 Method for realizing low-wind speed startup of permanent magnet wind turbine generator
KR20120100228A (en) * 2011-03-03 2012-09-12 엘에스전선 주식회사 Double-sided converter for initial operating in wind turbine, apparatus and method for initial operating using the same
CN202550580U (en) * 2012-03-27 2012-11-21 上海市电力公司 Permanent-magnet directly-driving wind turbine generator unit device
CN103187914A (en) * 2013-04-19 2013-07-03 三垦力达电气(江阴)有限公司 Power generation system based on brushless double-fed generator and excitation method for power generation system
CN203482130U (en) * 2013-08-06 2014-03-12 上海万德风力发电股份有限公司 A distributed low-wind-speed permanent-magnetic directly-driven wind-driven generator system

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110475968A (en) * 2017-01-19 2019-11-19 森维安有限公司 Method for rotating the rotor of wind energy conversion system

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Effective date of abandoning: 20181019