CN202550580U - Permanent-magnet directly-driving wind turbine generator unit device - Google Patents
Permanent-magnet directly-driving wind turbine generator unit device Download PDFInfo
- Publication number
- CN202550580U CN202550580U CN201220119120XU CN201220119120U CN202550580U CN 202550580 U CN202550580 U CN 202550580U CN 201220119120X U CN201220119120X U CN 201220119120XU CN 201220119120 U CN201220119120 U CN 201220119120U CN 202550580 U CN202550580 U CN 202550580U
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- Prior art keywords
- permanent
- wind turbine
- turbine generator
- unit device
- generator unit
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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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- 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
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Abstract
The utility model provides a permanent-magnet directly-driving wind turbine generator unit device. The permanent-magnet directly-driving wind turbine generator unit device comprises a wind wheel and a multilevel low-speed permanent-magnet synchronous generator which are connected in sequence, and further comprises a total power converter, wherein the multilevel low-speed permanent-magnet synchronous generator is connected with a power grid through the total power converter. The permanent-magnet directly-driving wind turbine generator unit device does not need an overdrive gear case, and by adopting the total power converter, grid-connection impact is small so that the permanent-magnet directly-driving wind turbine generator unit device has the advantages of being good in reliability and high in efficiency.
Description
Technical field
The utility model relates to a kind of wind power generation plant, belongs to wind power generation field.Be a kind of permanent magnetism direct drive wind group of motors device specifically.
Background technology
Wind power generation, the kinetic energy of keeping watch exactly is transformed into mechanical kinetic energy, is converted into electric power kinetic energy to mechanical energy again.The principle of wind power generation is to utilize wind-force to drive the air vane rotation, sees through the speed lifting of booster engine with rotation again, impels generator for electricity generation.
The needed device of wind power generation is called wind turbine generator.This wind turbine generator can be divided wind wheel (comprising tail vane), generator and iron tower three parts substantially.Wind wheel is the vitals that the kinetic energy of keeping watch changes mechanical energy into, and it is made up of the impeller of two (or more) propeller shapes.When wind during, produce aerodynamic force on the blade and drive wind wheel and rotate to paddle.The material requirements intensity of blade is high, in light weight, how to make with fiberglass or other composite material (like carbon fiber) at present.Because the rotating ratio of wind wheel is lower, and the size and Orientation of wind-force often changing, and this makes rotary speed unstabilization fixed again; So, before driving generator, also must add one and bring up to the speed-changing gear box of generator rated speed to rotating speed, add a speed adjusting gear again the rotating speed maintenance is stablized, and then be connected on the generator.For keeping wind wheel to aim at wind direction all the time, also need to adorn the tail vane of a similar wind vane in the back of wind wheel to obtain maximum power.Iron tower is the framework of wind-wheel supporting, tail vane and generator.It generally builds than higher, in order that obtain bigger and uniform wind-force, enough intensity is arranged again.The effect of generator is the constant rotational speed that obtains by wind wheel, passes to power facility through raising speed and evenly turns round, thereby transform mechanical energy into electricity.
Asynchronous wind-powered electricity generation unit commonly used has advantage simple in structure, that control is convenient, cost is lower.But also there are some problems, are mainly reflected in:
1, the reactive power of unit is uncontrollable, needs idle in a large number during startup; When grid side broke down, because machine torque and electromagnetic torque imbalance will make the motor acceleration, this process also can absorb a large amount of idle.Receive in the light current net when this unit,, influence the stability of voltage, even can cause voltage collapse if there are not reactive power compensators such as capacitor group or SVC.
2, the active power of unit output is uncontrollable, and its output pulsation is bigger, and is therefore also apparent in view to the influence of electrical network.
3, when turbines vane generation stall, stalling characteristics are wayward, are difficult to the stable output of guaranteed output, and power output is decreased.
4, unit constant-speed operation, Wind Power Utilization efficient is lower.
And the double-fed blower fan needs gear box, and the reliability of unit reduces; Control mode and protection strategy are complicated, and unit costs an arm and a leg.
The utility model content
The technical problem that the utility model will solve is: a kind of permanent magnetism direct drive wind group of motors device, it does not need step-up gear, has reliability and efficient preferably.
In order to solve the problems of the technologies described above; The utility model adopts following technical scheme: a kind of permanent magnetism direct drive wind group of motors device; Comprise the wind wheel and the multistage low-speed permanent-magnet synchronous generator that connect successively; Wherein, said permanent magnetism direct drive wind group of motors device also comprises full power convertor, and said multistage low-speed permanent-magnet synchronous generator is connected with electrical network through said full power convertor.
At described permanent magnetism direct drive wind group of motors device, be preferably, said permanent magnetism direct drive wind group of motors device also comprises transformer, said transformer is connected between said multistage low-speed permanent-magnet synchronous generator and the full power convertor.
The described permanent magnetism direct drive wind group of motors of the utility model device; It comprises wind wheel and the multistage low-speed permanent-magnet synchronous generator that connects successively; Wherein, Said permanent magnetism direct drive wind group of motors device also comprises full power convertor, and said multistage low-speed permanent-magnet synchronous generator is connected with electrical network through said full power convertor.This permanent magnetism direct drive wind group of motors device, it does not need step-up gear, adopts full power convertor, and the impact of being incorporated into the power networks is littler, has reliability and efficient preferably.
Description of drawings
Fig. 1 is the said permanent magnetism direct drive wind group of motors of a utility model apparatus structure sketch map.
Embodiment
Below, combine accompanying drawing that the utility model is made more detailed description with embodiment.Present embodiment only is the description to the utility model preferred forms, and the scope to the utility model does not have any restriction.
Embodiment
As shown in Figure 1, said permanent magnetism direct drive wind group of motors device comprises the wind wheel 1, multistage low-speed permanent-magnet synchronous generator 2, the full power convertor 3 that connect successively, and said multistage low-speed permanent-magnet synchronous generator 2 is connected with electrical network 5 through said full power convertor 3.
Preferably, between said multistage low-speed permanent-magnet synchronous generator and full power convertor, also be designed with transformer 4.
The described permanent magnetism direct drive wind group of motors of the utility model device; It comprises wind wheel and the multistage low-speed permanent-magnet synchronous generator that connects successively; Wherein, Said permanent magnetism direct drive wind group of motors device also comprises full power convertor, and said multistage low-speed permanent-magnet synchronous generator is connected with electrical network through said full power convertor.This permanent magnetism direct drive wind group of motors device, it does not need step-up gear, adopts full power convertor, and the impact of being incorporated into the power networks is littler, has reliability and efficient preferably.
Claims (2)
1. permanent magnetism direct drive wind group of motors device; Comprise the wind wheel and the multistage low-speed permanent-magnet synchronous generator that connect successively; It is characterized in that: said permanent magnetism direct drive wind group of motors device also comprises full power convertor, and said multistage low-speed permanent-magnet synchronous generator is connected with electrical network through said full power convertor.
2. permanent magnetism direct drive wind group of motors device according to claim 1 is characterized in that: said permanent magnetism direct drive wind group of motors device also comprises transformer, and said transformer is connected between said multistage low-speed permanent-magnet synchronous generator and the full power convertor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201220119120XU CN202550580U (en) | 2012-03-27 | 2012-03-27 | Permanent-magnet directly-driving wind turbine generator unit device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201220119120XU CN202550580U (en) | 2012-03-27 | 2012-03-27 | Permanent-magnet directly-driving wind turbine generator unit device |
Publications (1)
Publication Number | Publication Date |
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CN202550580U true CN202550580U (en) | 2012-11-21 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201220119120XU Expired - Lifetime CN202550580U (en) | 2012-03-27 | 2012-03-27 | Permanent-magnet directly-driving wind turbine generator unit device |
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Cited By (1)
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 |
-
2012
- 2012-03-27 CN CN201220119120XU patent/CN202550580U/en not_active Expired - Lifetime
Cited By (1)
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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Legal Events
Date | Code | Title | Description |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CX01 | Expiry of patent term |
Granted publication date: 20121121 |
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CX01 | Expiry of patent term |