CN203482130U - A distributed low-wind-speed permanent-magnetic directly-driven wind-driven generator system - Google Patents

A distributed low-wind-speed permanent-magnetic directly-driven wind-driven generator system Download PDF

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Publication number
CN203482130U
CN203482130U CN201320479129.6U CN201320479129U CN203482130U CN 203482130 U CN203482130 U CN 203482130U CN 201320479129 U CN201320479129 U CN 201320479129U CN 203482130 U CN203482130 U CN 203482130U
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CN
China
Prior art keywords
wind
generator
current transformer
driven generator
driven
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Expired - Fee Related
Application number
CN201320479129.6U
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Chinese (zh)
Inventor
吕先明
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WANDE WIND POWER GENERATION CO Ltd SHANGHAI
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WANDE WIND POWER GENERATION CO Ltd SHANGHAI
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Priority to CN201320479129.6U priority Critical patent/CN203482130U/en
Application granted granted Critical
Publication of CN203482130U publication Critical patent/CN203482130U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a distributed low-wind-speed permanent-magnetic directly-driven wind-driven generator system. The wind-driven generator system comprises a wind-driven generator set and a storage battery used for storing electric energy generated by the wind-driven generator set. The wind-driven generator system also comprises a start assisting system including a current transformer and a start control circuit. One end of the current transformer is connected with the wind-driven generator set, while the other end of the current transformer is connected with storage battery through the start control circuit. Compared with a product in the prior art, the distributed low-wind-speed permanent-magnetic directly-driven wind-driven generator system has advantages of decreasing the lowest start wind speed of the wind-driven generator and increasing the utilization rate of wind energy resource.

Description

Distributed low wind speed permanent magnet direct-driving aerogenerator system
Technical field
The utility model relates to a kind of wind powered generator system, especially relates 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, the wind energy turbine set that wind-resources ⅢLei district (the indivedual places that comprise the wind-resources ⅣLei district that wind energy resources is poor) are built and a kind of popular call that is applicable to the blower fan of the low wind speed wind field of III class.
Also there are experts and scholars to think that under 10m height condition, 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, and annual utilization hours is in the Wind Power Generation project below 2000 hours." be inaccurate, unscientific.
10.8 hundred million kilowatts of technology of China can exploitation amount the inside be to have comprised that wind energy can utilize the wind energy resources in some the better places of wind-resources in region (III~IV class resource-area).And China's wind energy can to utilize district's area be the maximum Yi Ge district of area in China's wind-resources district, 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 larger, therefore be called again Wind Power Utilization in season district.
This regional wind energy concentration is 50~150W.The time that is more than or equal to 3m/s wind speed has 2000~4000h every year; The time that is more than or equal to 6m/s wind speed has 500~1500h 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 take second place autumn.
(2) mountain area, the large Xiaoxinanlin Mountains, wind energy concentration is increased to 150W southwards by the 50W on north, and the hourage that wind speed is more than or equal to 6m/s is every year increased to 1500h southwards by the 750h on north.
(3) east from Base of Liaohe Plain westwards, cross North China llanura through northwest to westernmost end, left side is around Tibet plateau marginal portion, right side from North China to Huaihe River in the south, Dao Nan ridge, the Changjiang river.
Due to effect of inertia, during wind-driven generator starting, initial torque (staring torque) is greater than the moment of resistance while moving as everyone knows.Therefore the starting wind velocity of wind turbine generator is greater than minimum operation wind speed, and a part of so 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 is built the area that wind speed is lower in, and low wind speed resource is just more valuable, so reduce starting wind velocity, is just necessary.Simultaneously
Utility model content
The purpose of this utility model is exactly to provide a kind of distributed low wind speed permanent magnet direct-driving aerogenerator system in order to overcome the defect of above-mentioned prior art existence, and this system can reduce the minimum starting wind velocity of wind-driven generator, improves the utilance of wind energy resources.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of distributed low wind speed permanent magnet direct-driving aerogenerator system, this wind powered generator system comprises wind turbine generator and for storing the storage battery of electric energy that wind turbine generator produces, described wind powered 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, start control circuit is connected storage battery and current transformer, drive the wind wheel of wind turbine generator to rotate, when wind wheel reaches after the required minimum speed of normal operation, current transformer and storage battery disconnect, stop driving the wind wheel of 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 current transformer of formula back-to-back.
Compared with prior art, the utility model starts force aid system by design, wind-driven generator can be started under lower wind speed, thereby 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, asynchronous wind driven generator and dual-feed asynchronous wind power generator have been overcome 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 utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
Embodiment
As shown in Figure 1, a kind of distributed low wind speed permanent magnet direct-driving aerogenerator system, this wind powered generator system comprises wind turbine generator 1 and for storing the storage battery 2 of electric energy that wind turbine generator produces.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 need 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, owing to cannot obtaining exciting current, no matter wind-force was fine at that time, also can only stop generating.
Yet 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 to say when grid power blackout, as long as wind field continues there is wind, still can as usual generate electricity.
2, add starting force aid system.
This starting force aid system comprises current transformer 3 and start control circuit 4, and current transformer 3 one end connect wind turbine generator 1, and the other end is connected with storage battery 2 by start control circuit 4.For example, when wind speed reaches the starting wind velocity (2m/s) of setting, start control circuit is connected storage battery 2 and current transformer 3, now permanent magnet direct-drive generator operation, at electric motor state, drives the wind wheel of generating set to rotate, and blower fan can be just smooth starting at the starting wind velocity of setting like this.When wind wheel reaches after the required minimum speed of normal operation, static inertia is overcome, and start control circuit 4 is controlled current transformer 3 and disconnected with storage battery 2, stops driving the wind wheel of 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 current transformer of formula back-to-back, and this kind of current transformer itself has to the ability of motor or electrical network bidirectional power supply, without increasing hardware facility.And adopt the current transformer of his form.Need to set up again inverter to the special-purpose auxiliary circuit of generator powered, by starter controller, be automatically switched on or switched off.

Claims (3)

1. a distributed low wind speed permanent magnet direct-driving aerogenerator system, this wind powered generator system comprises wind turbine generator and for storing the storage battery of electric energy that wind turbine generator produces, it is characterized in that, described wind powered 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.
2. a kind of distributed low wind speed permanent magnet direct-driving aerogenerator system according to claim 1, is characterized in that, described wind turbine generator adopts permanent magnet direct-drive generator.
3. a kind of distributed low wind speed permanent magnet direct-driving aerogenerator system according to claim 1, is characterized in that, described current transformer is the two-way PWM current transformer of formula back-to-back.
CN201320479129.6U 2013-08-06 2013-08-06 A distributed low-wind-speed permanent-magnetic directly-driven wind-driven generator system Expired - Fee Related CN203482130U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320479129.6U CN203482130U (en) 2013-08-06 2013-08-06 A distributed low-wind-speed permanent-magnetic directly-driven wind-driven generator system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320479129.6U CN203482130U (en) 2013-08-06 2013-08-06 A distributed low-wind-speed permanent-magnetic directly-driven wind-driven generator system

Publications (1)

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CN203482130U true CN203482130U (en) 2014-03-12

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104348391A (en) * 2013-08-06 2015-02-11 上海万德风力发电股份有限公司 Distributed low-air speed permanent magnet direct-driven wind driven generator system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104348391A (en) * 2013-08-06 2015-02-11 上海万德风力发电股份有限公司 Distributed low-air speed permanent magnet direct-driven wind driven generator system

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