CN204024920U - A kind of double-fed wind generating device - Google Patents
A kind of double-fed wind generating device Download PDFInfo
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- CN204024920U CN204024920U CN201420474393.5U CN201420474393U CN204024920U CN 204024920 U CN204024920 U CN 204024920U CN 201420474393 U CN201420474393 U CN 201420474393U CN 204024920 U CN204024920 U CN 204024920U
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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 relates to a kind of double-fed wind generating device, comprise wind power generating set, described wind power generating set is connected with gear-box, described gear-box is connected with double fed induction generators, described double fed induction generators is connected with bi-directional frequency converter, described bi-directional frequency converter is connected with controller, grid-connection device respectively, and described controller is connected with condition monitoring device.Of the present utility model pair of feedback arrangement, can make wind power generating set, at wind-force more greatly, export constant frequency and constant voltage electric energy in less situation.
Description
Technical field
The utility model relates to wind power plant, relates in particular to a kind of double-fed wind generating device.
Background technique
Utilize the trial of wind-power electricity generation, as far back as the beginning of this century, just started.The '30s, the rotor technology of Denmark, Sweden, the Soviet Union and U.S.'s application aviation industry, has successfully developed some small wind-driven generators.This small-sized wind power generator, is extensively used on windy island and remote rural area, and the power cost that it obtains is more much lower than the cost of electricity-generating of compact internal combustion engine.But, generated energy is at that time lower, mostly below 5 kilowatts.
Produced 15,40,45,100 abroad, the wind-driven generator of 225 kilowatts.In January, 1978,200 kilowatts of wind-driven generators that the U.S. builds up in the Clayton town of New Mexico, its blade diameter is 38 meters, the enough 60 family residential electricity consumptions of generated energy.And early summer in 1978, the wind generating unit putting into operation in West Coast, Denmark Jutland, its generated energy reaches 2000 kilowatts, and windmill is high 57 meters, and 75% of institute's generated energy is sent into electrical network, and all the other are supplied with near Yi Suo school and use.
The first half of the year in 1979, the U.S., on the Blue Mountains mountain of the North Carolina state, has built up again a windmill for maximum generating use in the world.This windmill has ten floors high, 60 meters of the diameters of windmill steel blade; Blades installation is on a tower building, so windmill is free to rotate and obtain electric power from any one direction; Wind-force speed per hour is when more than 38 kilometers, and generating capacity also can reach 2000 kilowatts.Because the average wind-force speed per hour of this rolling country only has 29 kilometers, so windmill can not total movement.According to estimates, even if only have half the time running the whole year, it just can meet the electricity consumption needs in Qi Ge county, the North Carolina state 1% to 2%.
Wind power generating set, can divide wind wheel (comprising tail vane), generator and steel tower three parts substantially.(large-scale wind generating station there is no tail vane, generally only has small-sized (comprising household type) just can have tail vane.Because the rotating ratio of wind wheel is lower, and the size and Orientation of wind-force often changing, and this makes again rotary speed unstabilization fixed; So, before driving generator, also must add a speed-changing gear box of rotating speed being brought up to generator rated speed, then add a speed regulating mechanism rotating speed maintenance is stablized, and then be connected on generator.
Model utility content
Technical problem to be solved in the utility model is to provide double-fed wind generating device a kind of simple in structure, with low cost.
The technological scheme that the utility model solves the problems of the technologies described above is as follows: a kind of double-fed wind generating device, comprise wind power generating set, described wind power generating set is connected with gear-box, described gear-box is connected with double fed induction generators, described double fed induction generators is connected with bi-directional frequency converter, described bi-directional frequency converter is connected with controller, grid-connection device respectively, and described controller is connected with condition monitoring device.
On the basis of technique scheme, the utility model can also be done following improvement.
Further, described gear-box is wind speed control box, and when condition monitoring device detects the decline of double fed induction generators rotating speed by bi-directional frequency converter, described gear-box increases the wind power generating set blade elevation angle, accelerate wind power generating set and rotate, to keep constant frequency and constant voltage output; When condition monitoring device detects double fed induction generators faster rotational speed by bi-directional frequency converter, described gear-box reduces the wind power generating set blade elevation angle, reduces wind power generating set and rotates, to keep constant frequency and constant voltage output.
Further, on described double fed induction generators, be provided with cooling unit, due to continuous firing, double fed induction generators temperature can raise, and described cooling unit can prevent that double fed induction generators from crossing cause thermal damage.
The beneficial effects of the utility model are: simple in structure, with low cost, described pair of feedback arrangement, can make wind power generating set, at wind-force more greatly, export constant frequency and constant voltage electric energy in less situation.
Accompanying drawing explanation
Fig. 1 is a kind of two feedback wind power generation device structure schematic diagram of the utility model;
In accompanying drawing, the list of parts of each label representative is as follows: 1, wind-force power generator group, 2, gear-box, 3, cooling unit, 4, double fed induction generators, 5, bi-directional frequency converter, 6, grid-connection device, 7, controller, 8, condition monitoring device.
Embodiment
Below in conjunction with accompanying drawing, principle of the present utility model and feature are described, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
As shown in Figure 1, a kind of double-fed wind generating device, comprise wind power generating set 1, described wind power generating set 1 is connected with gear-box 2, described gear-box 2 is connected with double fed induction generators 4, described double fed induction generators 4 is connected with bi-directional frequency converter 5, and described bi-directional frequency converter 5 is connected with controller 7, grid-connection device 6 respectively, and described controller 7 is connected with condition monitoring device 8.
Described gear-box 2 is wind speed control box, when condition monitoring device 8 detects double fed induction generators 4 rotating speeds decline by bi-directional frequency converter 5, described gear-box 2 increases the wind power generating set 1 blade elevation angle, accelerates wind power generating set 1 and rotates, to keep constant frequency and constant voltage output; When condition monitoring device 8 detects double fed induction generators 4 faster rotational speed by bi-directional frequency converter 5, described gear-box 2 reduces the wind power generating set 1 blade elevation angle, reduces wind power generating set 1 and rotates, to keep constant frequency and constant voltage output.
On described double fed induction generators 4, be provided with cooling unit 3, due to continuous firing, double fed induction generators 4 temperature can raise, and described cooling unit 3 can prevent double fed induction generators 4 cause thermal damage excessively.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (3)
1. a double-fed wind generating device, it is characterized in that, comprise wind power generating set, described wind power generating set is connected with gear-box, described gear-box is connected with double fed induction generators, described double fed induction generators is connected with bi-directional frequency converter, and described bi-directional frequency converter is connected with controller, grid-connection device respectively, and described controller is connected with condition monitoring device.
2. a kind of double-fed wind generating device according to claim 1, is characterized in that, described gear-box is wind speed control box.
3. a kind of double-fed wind generating device according to claim 1, is characterized in that, on described double fed induction generators, is provided with cooling unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420474393.5U CN204024920U (en) | 2014-08-21 | 2014-08-21 | A kind of double-fed wind generating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420474393.5U CN204024920U (en) | 2014-08-21 | 2014-08-21 | A kind of double-fed wind generating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204024920U true CN204024920U (en) | 2014-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420474393.5U Expired - Fee Related CN204024920U (en) | 2014-08-21 | 2014-08-21 | A kind of double-fed wind generating device |
Country Status (1)
| Country | Link |
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| CN (1) | CN204024920U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112682259A (en) * | 2020-01-20 | 2021-04-20 | 上海明华电力科技有限公司 | Compact energy storage type vertical axis wind power generation device |
-
2014
- 2014-08-21 CN CN201420474393.5U patent/CN204024920U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112682259A (en) * | 2020-01-20 | 2021-04-20 | 上海明华电力科技有限公司 | Compact energy storage type vertical axis wind power generation device |
| CN112682259B (en) * | 2020-01-20 | 2022-06-03 | 上海明华电力科技有限公司 | Compact energy storage type vertical axis wind power generation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 Termination date: 20150821 |
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| EXPY | Termination of patent right or utility model |