CN206246284U - A kind of bilobed wheel synchro wind generator group - Google Patents
A kind of bilobed wheel synchro wind generator group Download PDFInfo
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- CN206246284U CN206246284U CN201620756990.6U CN201620756990U CN206246284U CN 206246284 U CN206246284 U CN 206246284U CN 201620756990 U CN201620756990 U CN 201620756990U CN 206246284 U CN206246284 U CN 206246284U
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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
Abstract
A kind of bilobed wheel synchro wind generator group, is mainly made up of upwind impeller, lower wind direction impeller, gear train assembly and synchronous generator.Power needed for synchronous generator is input into by upwind impeller and lower wind direction impeller, and the power of two impellers is transferred to synchronous generator after being synthesized by differential gear train.Upwind impeller is variable-distance impeller, the blade of lower wind direction impeller can moving radially along wheel hub, ensure generator operation in synchronous rotational speed by the excitation of the rotating speed and synchronous generator that adjust two impellers.Bilobed wheel Synchronous generator described in the utility model has the advantages that low cost, transmission efficiency, reply electric network fault ability are strong.
Description
Technical field
The utility model is related to wind power generation field, and in particular to a kind of bilobed wheel synchro wind generator group.
Background technology
Wind energy is increasingly paid attention to as a kind of huge renewable and clean energy resource of reserves by various countries.Nearest decades
Come, wind generating technology is developed rapidly.
Since two thousand and ten, the installed capacity of Wind Power In China has surmounted the U.S., and the absolute value of installed capacity occupies the world
First.With being continuously increased for installed capacity of wind-driven power, wind generating technology problem encountered is also increasingly protruded.Wind-powered electricity generation faces
Two important problems to be badly in need of solving：One be wind-powered electricity generation stability it is poor；Two is the poor reliability of wind power plant.
One performance of wind-powered electricity generation stability difference is that wind power system tackles the ability of electric network fault not in actual moving process
Foot.The main flow of current wind power plant is double-fed asynchronous wind driven generator and direct-driving type synchro wind generator.In power network
In the case of Voltage Drop, transient voltage and electric current can be significantly increased in double-fed unit rotor circuit；The rapid increasing of electric current
Plus current transformer DC voltage can be caused to raise, excessively stream and overvoltage can constitute a threat to the power electronic devices of current transformer, force
Current transformer is out of service.To tackle this problem, double-fed unit is using low voltage crossing technology or uses rational excitation control
Algorithm processed, but the effect of these measures is limited.Direct-driving type wind power generation unit by full power convertor realize generator with
Isolation between power network, with stronger subnormal voltage operation ability.But when power network occurs the failures such as Voltage Drop, current transformer is straight
Stream side there is also the problem of overvoltage and off-capacity, and higher hamonic wave is produced in power network current.
Another performance of wind-powered electricity generation stability difference is unstable generated output.This is determined by the inherent characteristic of wind-powered electricity generation,
Because wind speed is unstable, when it is big when it is small, cause the fluctuation of wind-power electricity generation power.
The poor reliability of wind power plant refers to that the service life of wind-driven generator does not reach expected requirement.Wind-power electricity generation
Fault rate part higher is gear-box in machine.The reason for the reason for gearbox fault is high is except manufacture and assembling, one
Individual important the reason for is very low wheel speed, and the moment of torsion of generation is very big, and the contact stress and bending stress of tooth surface are all very big,
It is just bigger that transmission system has born load in strong wind or brake hard.The power of modern wind generator is increasing, tooth
Load suffered by roller box is also increasing.
Friendly wind power technology is following development trend of wind generating technology.Friendly wind power technology is with preposition stepless speed regulation
It is core, using constant-speed and constant-frequency synchronous generator technology, generator speed is remained near synchronous rotational speed.Major technique stream
Group includes：Hydraulic moment changeable speed governing, electromagnetic coupled speed governing, differential gearing speed governing.German Voith companies are developed based on hydraulic moment changeable
The Windrivet systems of speed governing simultaneously come into operation, and because the transmission efficiency of fluid torque-converter is low, cause the biography of Windrive systems
Efficiency of movement is not high.It is currently under in research using the mode of electromagnetic coupler speed governing, is damaged due to slip power can not possibly be eliminated
Consumption and iron loss, the efficiency of this mode of speed regulation is not also high.Differential gearing speed governing is the rotating speed by the rotating speed of impeller and variable-frequency motor
Synthesis, makes the synchronous rotational speed that output speed is generator.Existing friendly wind generating technology can successfully manage power network event
Barrier, but come with some shortcomings：Windriver systems and the transmission efficiency of electromagnetic coupled speed governing be not high；Electromagnetic coupled speed governing
Electronic power convertor is be unable to do without with differential speed regulation, due to the presence of current transformer, high order is inevitably produced in power network
Harmonic wave.
The content of the invention
The purpose of this utility model：The friendly wind-driven generator of a kind of transmission efficiency, good reliability is provided.
The technological means that the utility model is used：Using the thought of power dividing, change traditional single impeller wind-power electricity generation
Machine structure, sets two impellers of upwind and lower wind direction, and power is effectively improved gear-box lubrication groove by two impeller input gear casees
The contact stress and bending stress of between cog；Remove the electronic power convertor for producing higher hamonic wave, by upwind impeller and leeward
To the rotating speed of the motion synthesis regulation wind-driven generator of impeller；In order that the power swing of wind-driven generator is small, enhancing impeller is caught
The regulating power of wind energy is caught, upwind impeller is variable-distance impeller, upwind impeller is controlled to wind energy by changing angle windward
Capturing ability, the blade of lower wind direction impeller can moving radially along impeller boss body, control lower wind direction leaf by changing leaf position
Take turns the capturing ability to wind energy.
To achieve the above object and technological means, content of the present utility model is as follows：A kind of bilobed wheel synchronous wind generating
Unit, is mainly made up of upwind impeller, lower wind direction impeller, gear train assembly and synchronous generator, it is characterised in that：Gear
Transmission system is made up of two-stage Gear Planet Transmission and one-level dead axle transmission；Gear Planet Transmission is made up of preceding planet row and rear planet row, preceding
The central gear of planet row is connected with the planet carrier of rear planet row；The free degree of preceding planet row is two, its planet carrier, ring gear
Can be rotated with central gear；The free degree of planet row is one afterwards, and its ring gear is fixed, and planet carrier and central gear can be with
Rotate；Upwind impeller is connected with the ring gear of preceding planet row, and lower wind direction impeller is connected with the planet carrier of preceding planet row；Dead axle is passed
Dynamic to be made up of gear wheel and little gear, gear wheel and little gear keep meshing relation, the central gear of gear wheel and rear planet row
It is connected, little gear is connected as a single entity with synchronous generator；The blade of lower wind direction impeller can moving radially along impeller boss body, lower wind direction
The blade swept area of impeller can change.
Brief description of the drawings
Fig. 1 is a kind of schematic diagram of bilobed wheel synchro wind generator group.
Specific embodiment
Specific embodiment of the present utility model is now described in detail with the schematic diagram shown in Fig. 1.
A kind of bilobed wheel Synchronous generator is main by upwind impeller, lower wind direction impeller, gear train assembly and synchronization
Generator several major is constituted.
Gear train assembly is made up of two-stage planet transmission and the transmission of one-level fixed axis gear.Planetary Gear Transmission is by preceding
Planet row and rear planet row are constituted.Preceding planet row is by front-seat ring gear（3）, front-seat planet carrier（4）, front-seat planetary gear（5）With
Front-seat central gear（6）Composition.Planet row is by heel row planet carrier afterwards（7）, heel row planetary gear（8）, heel row ring gear（9）With it is rear
Row's central gear（10）Composition.Fixed axis gear is driven by gear wheel（11）And little gear（12）Composition, gear wheel（11）With small tooth
Wheel（12）Keep meshing relation.Front-seat central gear（6）With heel row planet carrier（7）It is connected, the two synchronous axial system.Heel row centre tooth
Wheel（10）With gear wheel（11）It is connected, the two synchronous axial system.Little gear（12）With synchronous generator（13）It is connected, the two synchronously turns
It is dynamic.
Front-seat ring gear in preceding planet row（3）, front-seat planet carrier（4）With front-seat central gear（6）Do not fix, move ahead
The free degree of star row is two；Afterwards in planet row, only heel row ring gear（9）It is fixed, heel row planet carrier（7）With heel row central gear
（10）Do not fix, the free degree of rear planet row is one.
Upwind impeller（1）It is variablepiston impeller, the front face area that can change blade is operated by becoming oar.
Lower wind direction impeller is by lower wind direction blade（15）, sliding block（16）, lower wind direction impeller boss body（17）, worm screw（18）, worm gear
（19）, drive bevel gear（20）, driven wheel of differential（21）And screw rod（22）Composition.Lower wind direction blade（15）Installed in sliding block（16）
On, lower wind direction blade（15）And sliding block（16）Can be along lower wind direction impeller boss body（17）Move radially.Sliding block（16）Be provided with
Screw rod（22）The internal thread being engaged, sliding block（16）Movement by screw rod（22）Drive.Impeller boss body on the leeward（17）It is upper to go back
Worm screw is installed（18）, worm gear（19）, drive bevel gear（20）, driven wheel of differential（21）And screw rod（22）, worm gear（19）With master
Dynamic bevel gear（20）It is connected as a single entity, driven wheel of differential（21）With screw rod（22）It is connected as a single entity.Work as worm screw（18）During rotation, snail is driven
Wheel（19）Rotate, worm gear（19）And drive bevel gear（20）Rotate together, drive bevel gear（20）Drive driven wheel of differential（21）
And screw rod（22）Rotate, so that sliding block（16）Along lower wind direction impeller boss body（17）Move radially.Instantly wind direction impeller has many
During individual blade, drive bevel gear drives multiple driven wheels of differential simultaneously, makes to be moved or interior shifting outside multiple blade synchronizations.
When upwind impeller rotates, the sweeping area of its blade is a circle, and the area of sweeping area will not change.
When lower wind direction impeller rotates, the sweeping area of its blade is an annulus, and the area of sweeping area is determined by the position of blade,
When blade from impeller rotating shaft more away from when, the area of sweeping area is bigger, otherwise then smaller.The area of blade sweeping area is got over
Greatly, the wind energy of acquisition is more.
Upwind impeller（1）By upwind input shaft（2）With front-seat ring gear（3）It is connected, under lower wind direction impeller passes through
Wind direction input shaft（14）With front-seat planet carrier（4）It is connected.
Bilobed wheel Synchronous generator described in the utility model, power is input into by upwind impeller and lower wind direction impeller,
Then by front-seat central gear（6）It is delivered to heel row planet carrier（7）, power is again by heel row central gear（10）It is transferred to canine tooth
Wheel（11）, by gear wheel（11）Driving pinion（12）, finally by little gear（12）Band engine alternator（13）Rotate.
Because upwind impeller is connected with front-seat inner gear ring, lower wind direction impeller is connected with front-seat planet carrier, so windward
Rotating speed to impeller is identical with the rotating speed of front-seat ring gear, and lower wind direction impeller is identical with the rotating speed of front-seat planet carrier.If n3Table
Show the rotating speed of front-seat ring gear, n4Represent the rotating speed of front-seat planet carrier, n5The rotating speed of front-seat central gear is represented, k is represented in front row
Gear ring and the gear ratio of front-seat central gear, then can obtain equation below by the knowledge of theory of mechanics：n5=(k+1)n4-kn3, by public affairs
Formula can be seen that the rotating speed for changing upwind impeller and lower wind direction impeller, the rotating speed of front-seat central gear can be adjusted, so as to reach
To the purpose of regulator generator rotating speed, if operate making upwind impeller rotating by displacement, front-seat central gear can be made
Rotating speed change in very large range.
In bilobed wheel wind-driven generator described in the utility model, the direction of rotation phase of upwind impeller and lower wind direction impeller
Instead, can make preceding planet row has very big raising speed ratio, the power needed for driving generator by the premenstrual seniority among brothers and sisters carrier of two impellers and
Front-seat ring gear input, exports after collaborating at front-seat central gear.This structure is conducive to the flank of tooth for reducing preceding planet row to connect
Stress and Dedenda's bending stress are touched, extends the service life of gear-box.
The specific work process of bilobed wheel wind-driven generator described in the utility model, can be divided into according to the size of wind speed
Three phases.
First stage is startup stage.When wind speed reaches incision wind speed, upwind impeller is in maximal wind-energy and catches shape
State, the blade of lower wind direction impeller moves to an off the farthest position of axis, and upwind impeller and lower wind direction impeller are reversely rotated, and are made same
The rotating speed rapid increase of generator is walked, when the rotating speed of synchronous generator reaches synchronous rotational speed, is carried out and net operation.
Second stage is less than the rated wind speed stage for wind speed more than threshold wind velocity.In this stage, upwind impeller
In maximal wind-energy trap state, the blade of lower wind direction impeller remains at the position farthest from rotation axis.When wind speed occurs
During fluctuation, its rotating speed is set to be maintained at synchronous rotational speed by the excitation for adjusting synchronous generator.The output work of this stage generator
Rate changes, and frequency keeps constant.
Three phases are less than shutdown wind speed for wind speed more than or equal to rated wind speed.When wind speed reaches rated wind speed,
The power output of synchronous generator is rated power.If wind speed is less than shutdown wind speed more than rated wind speed, windward is adjusted
To the distance of blade angle and lower wind direction impeller blade and the axis windward of impeller, it is ensured that the power output of synchronous generator and output
Frequency is constant.When wind speed is close to shutdown wind speed, the blade of lower wind direction impeller is nearest apart from axis.
When wind speed reaches shutdown wind speed, the angle of attack of upwind impeller is adjusted to 90 degree, lower wind direction impeller apart from axis most
It is near and discharge blade tip flow spoiler, make wind-driven generator quick shutdown.
Bilobed wheel wind-driven generator described in the utility model has following advantage：Under conditions of equal-wattage,
The blade of bilobed wheel wind-driven generator is smaller than the blade of single impeller wind-driven generator, reduces the manufacture difficulty of blade, reduces
Requirement of the blade to material, reduces the moment of flexure suffered by root of blade；Upwind impeller and lower wind direction impeller split the two of cabin
End, is conducive to the balance of cabin；Power needed for synchronous generator is input into simultaneously by upwind impeller and lower wind direction impeller, makes tradition
Single power flow be changed into double power flow, be conducive to reduce gear surface contact stress and tooth root bending stress, extend gear
The service life of case；Compared with the wind-driven generator of electromagnetic coupled speed governing and hydraulic moment changeable speed governing, bilobed wheel wind power generating set
Transmission system in without second energy conversion elements, its transmission efficiency is very high；Bilobed wheel Synchronous generator eliminates electric power electricity
Sub- current transformer, making the cost of generating set reduces, and has been inherently eliminated the higher hamonic wave in power network current, more friendly to power network
It is good.Comprehensive these advantages, bilobed wheel synchro wind generator group described in the utility model has good promotional value.
Claims (3)
1. a kind of bilobed wheel synchro wind generator group, mainly by upwind impeller, lower wind direction impeller, gear train assembly and same
Step generating set into, it is characterised in that：Gear train assembly is made up of two-stage Gear Planet Transmission and one-level dead axle transmission；Gear Planet Transmission
It is made up of preceding planet row and rear planet row, the central gear of preceding planet row is connected with the planet carrier of rear planet row；Preceding planet row
The free degree is two, and its planet carrier, ring gear and central gear can be rotated；The free degree of planet row is one, it interior afterwards
Gear ring is fixed, and planet carrier and central gear can be rotated；Upwind impeller is connected with the ring gear of preceding planet row, lower wind direction impeller
Planet carrier with preceding planet row is connected；Dead axle transmission is made up of gear wheel and little gear, and gear wheel keeps engaging pass with little gear
System, gear wheel is connected with the central gear of rear planet row, and little gear is connected as a single entity with synchronous generator；The blade of lower wind direction impeller
Can moving radially along impeller boss body, the blade swept area of lower wind direction impeller can change.
2. bilobed wheel Synchronous generator according to claim 1, it is characterised in that：The blade of upwind impeller is not solid
It is fixed, feather operation can be carried out.
3. bilobed wheel Synchronous generator according to claim 1, it is characterised in that：Lower wind direction impeller is main by impeller boss
Body, sliding block, blade, screw rod, Bevel Gear Transmission, worm gear, worm screw composition, blade are arranged on sliding block, and sliding block can be along hub body radially
Mobile, by screw drive, screw rod is driven by worm and worm gear and bevel gear mechanism for the movement of sliding block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620756990.6U CN206246284U (en) | 2016-07-19 | 2016-07-19 | A kind of bilobed wheel synchro wind generator group |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620756990.6U CN206246284U (en) | 2016-07-19 | 2016-07-19 | A kind of bilobed wheel synchro wind generator group |
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| CN206246284U true CN206246284U (en) | 2017-06-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106150916A (en) * | 2016-07-19 | 2016-11-23 | 四川大学 | A kind of bilobed wheel synchro wind generator group |
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- 2016-07-19 CN CN201620756990.6U patent/CN206246284U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106150916A (en) * | 2016-07-19 | 2016-11-23 | 四川大学 | A kind of bilobed wheel synchro wind generator group |
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