CN102269132A - Electric stepless speed change large-sized synchronous wind generating unit - Google Patents
Electric stepless speed change large-sized synchronous wind generating unit Download PDFInfo
- Publication number
- CN102269132A CN102269132A CN201110171109A CN201110171109A CN102269132A CN 102269132 A CN102269132 A CN 102269132A CN 201110171109 A CN201110171109 A CN 201110171109A CN 201110171109 A CN201110171109 A CN 201110171109A CN 102269132 A CN102269132 A CN 102269132A
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- China
- Prior art keywords
- generator
- motor
- stepless speed
- electric stepless
- electric
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/20—Wind motors characterised by the driven apparatus
- F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D15/00—Transmission of mechanical power
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/70—Bearing or lubricating arrangements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K51/00—Dynamo-electric gears, i.e. dynamo-electric means for transmitting mechanical power from a driving shaft to a driven shaft and comprising structurally interrelated motor and generator parts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2220/00—Application
- F05B2220/70—Application in combination with
- F05B2220/706—Application in combination with an electrical generator
- F05B2220/7064—Application in combination with an electrical generator of the alternating current (A.C.) type
- F05B2220/70642—Application in combination with an electrical generator of the alternating current (A.C.) type of the synchronous type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/40—Transmission of power
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1807—Rotary generators
- H02K7/1823—Rotary generators structurally associated with turbines or similar engines
- H02K7/183—Rotary generators structurally associated with turbines or similar engines wherein the turbine is a wind turbine
- H02K7/1838—Generators mounted in a nacelle or similar structure of a horizontal axis wind turbine
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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
The invention discloses an electric stepless speed change large-sized synchronous wind generating unit. The wind generating unit comprises a fan hub, an electric stepless speed changer and a regular synchronous generator, wherein the electric stepless speed changer comprises a generator and a motor which share one rotor body, is formed by using a power electronic control technology and is used for replacing the conventional variable ratio mechanical gearbox. By the wind generating unit, the regular synchronous generator can be driven to operate at a synchronous rotating speed and combined to a grid for electricity generation on the basis of the motor in the stepless speed changer. The wind generating unit has high reliability, low cost and high electric energy quality and is suitable for large-sized electric stepless speed change synchronous wind generating units of megawatt level or above.
Description
Technical field
The present invention relates to a kind of Large-scale Wind Turbines, particularly a kind of MW class and above large-scale electric stepless change synchronized model wind power generating set.
Background technique
Along with the whole world demand growing, increasing challenge has been proposed for the Technical advancement and the cost of production of wind power generating set to the wind-powered electricity generation energy.At present power at MW class and above large-scale wind electricity unit mainly based on double-fed generator set and direct-driving type generator set.The Transmitted chains of double-fed wind-powered electricity generation unit must have high power gearbox, and this reliability and maintainability to unit has proposed harsher requirement.The direct-driving type wind power generation unit has been avoided the maintenance workload of high power gearbox, and reliability increases.But because its rotating speed is very low, along with the increase of power, its size and weight are with increasing, and cost also can be more and more higher.In addition, this two classes generator is compared with conventional synchronous generator at the aspect of performance that electric network reactive-load enabling capabilities and low voltage are passed through, and is all less better.
Summary of the invention
Exist dimensional weight big or need the deficiency of high power gearbox in order to overcome existing large-scale wind electricity unit, the objective of the invention is to: provide a kind of electric stepless change large-scale synchro wind generator group, this large-scale its dimensional weight of synchro wind generator group is only suitable with existing double-fed generator set, need not to adopt high power gearbox again, reliability improves a lot.And increase day by day along with the wind-powered electricity generation unit capacity accounts for electrical network total capacity proportion, electrical network requires when severe day by day grid type wind-powered electricity generation unit performance, and the present invention adopts conventional synchronous generator, still can satisfy the severe requirement of electrical network to the wind-powered electricity generation unit.
The technical solution adopted for the present invention to solve the technical problems is as follows:
The large-scale synchro wind generator group of a kind of electric stepless change, it comprises the synchronous generator of axial fan hub, an electric stepless speed variator and a routine; Described electric stepless speed variator comprises a generator and a motor, and the shared rotor body of this generator and motor, magnetic circuit are independent mutually; Described hub spindle links to each other with generator shaft in the electric stepless speed variator, directly drives generator armature by wheel hub, and this generator mainly is made up of the internal rotor on generator armature and the rotor body; Motor in the electricity stepless speed variator mainly is made up of the external rotor on motor armature and the rotor body; The electric via controller I that is sent by this generator and the controller II drive motor rotor of may command motor speed form electric stepless speed variator; Described rotor body links to each other with the synchronous generator of routine by coupling, drives synchronous generator, and the electricity that sends is connected to the grid after transformer boosts.
The present invention adopts electric Variable Speed Technology in MW class and above Large-scale Wind Turbines, utilize the power electronics control technique to form an electric stepless speed variator with a generator and a motor (having a rotor), replace the mechanical type gear-box of existing variable ratio.Generator in the electricity stepless speed variator is by the motivational drive generating of the wind wheel wheel hub of variable-speed operation, and the rotating speed of control motor after the electric via controller conversion of sending makes motor turn round with the synchronous speed with electrical network.Although wind wheel is with variable-speed operation like this, motor can keep constant-speed operation, thereby has realized stepless change.Large-scale Wind Turbines of the present invention can be only suitable with existing double-fed generator set at its dimensional weight, when need not to adopt high power gearbox again, the synchronous generator that the motor of power in electric stepless speed variator of wheel hub just can be driven a routine moves with synchronous speed, generates electricity by way of merging two or more grid systems.
Compared with prior art, the invention has the beneficial effects as follows: the electricity consumption stepless speed changes devices replaces a kind of mechanical type gear-box of variable speed, the power of wheel hub can be driven a conventional synchronous generator through electric stepless speed changes devices like this, realized the variable speed constant frequency operation of wind-powered electricity generation unit, can satisfy the severe requirement of electrical network, make machine consist of the wind power generating set of a kind of high reliability, low cost, the high quality of power supply the wind-powered electricity generation unit.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the fundamental diagram of the large-scale synchro wind generator group of the present invention's electricity stepless change.
Fig. 2 is a structural representation of the present invention.
Among the figure, 1. wheel hub, 2. slip ring, 3. generator armature, 4. internal rotor, 5. external rotor, 6. motor armature, 7. rotor body, 8. coupling, 9. synchronous generator, 10. transformer, 11. electrical networks, 12. controller I, 13. controller II, 14. hub spindles, 15. main bearings, 16. transmission input shaft, 17. elastic support, rotating disk before the 18. speed changer fore bearings, 19. rotors, 20. shell, 21. speed changer rear bearings, 22. transmission output shafts, 23. frames.
Embodiment
Figure 1 shows that the fundamental diagram of the large-scale synchro wind generator group of a kind of electric stepless change of the present invention.The working principle of unit of the present invention when normal power generation is as follows: wheel hub 1 turns round with a slow-speed of revolution n1, and the shared rotor body 7 of internal rotor 4 and external rotor 5 is with the high-speed synchronous rotation speed n t running of electrical network.Generator armature 3 is directly driven by wheel hub 1, and the internal rotor 4 on it and the rotor body 7 is formed a generator, and this generator armature 3 and internal rotor 4 are with relative rotation speed nt-n1 operation generating.The electricity that generator sends causes controller I 12 through slip ring 2, and the electric energy of this controller after with conversion delivered to controller II 13, and controller II 13 delivers to motor armature 6 with the electric energy after the conversion, and motor armature 6 is formed a motor with external rotor 5.This motor armature is static, and it is by controller II 13 power supplies, and controller II 13 is the rotating speed of control external rotor 5 in real time, and promptly external rotor 5 turns round with the synchronous speed nt with electrical network among the figure.This motor rotor drives synchronous generator 9 through rotor body 7, transmission output shaft 22 and flexible coupling 8, and the electricity that sends is connected to the grid 11 after transformer 10 boosts.Above-mentioned generator armature 3 can be induction generator, permanent magnet generator with the generator that internal rotor 4 is formed, and also can be switch reluctance generator.Motor armature 6 can be asynchronous motor, permanent magnet motor with the motor that external rotor 5 is formed, and also can be switched reluctance motor.
Figure 2 shows that an embodiment of the structure of the large-scale synchro wind generator group of a kind of electric stepless change of the present invention.Short and small center line is represented the bolt of different size among the figure.This wind power generating set comprises the synchronous generator 9 of axial fan hub 1, an electric stepless speed variator and a routine; The electricity stepless speed variator comprises a generator and a motor, and the shared rotor body 7 of this generator and motor, magnetic circuit are independent mutually; Hub spindle 14 is installed in the interior ring of main bearing 15, and wheel hub main bearing 15 adopts double-row conical bearing.The front end of hub spindle 14 and wheel hub 1 are fastening, and rear end and generator shaft 16 are fastening.Slip ring 2 is installed on the generator shaft 16.Generator armature 3 is installed on the generator shaft 16.Directly drive generator armature 3 by wheel hub 1.Generator mainly is made up of generator armature 3 and the internal rotor 4 on the rotor body 7; Motor in the electricity stepless speed variator mainly is made up of motor armature 6 and the external rotor 5 on the rotor body 7.Generator links to each other with controller II 13 with controller I 12 successively through slip ring 2.Rotor body 7 links to each other with conventional synchronous generator 9 by transmission output shaft 22, coupling 8, drives synchronous generator 9 generatings, is connected to the grid 11 after transformer 10 boosts.
Rotating disk 19 before rotor body 7 front ends are equipped with rotor, transmission output shaft 22 is equipped with in the rear end.The transmission output shaft 22 of rotor body 7 rear ends links to each other with the axle of conventional synchronous generator 9 through flexible coupling 8.The generator of electric stepless speed variator and motor the two ends of shared rotor body 7 speed changer fore bearing 18 and speed changer rear bearing 21 are housed respectively, this fore bearing 18 and rear bearing 21 are deep groove ball bearing or have other form bearing of identical functions.Synchronous generator 9 is a main generator, and this main generator is installed on the frame 23 through elastic support 17.The outer shroud of main bearing 15 is installed in the shell 20.Shell 20 is made of one with frame 23, and motor armature 6 is installed in the shell 20.
Above-mentioned mode of execution example only is used to illustrate the present invention, and wherein the structure of each parts, Placement, position etc. all are to change to some extent.Every equivalents of carrying out on the basis of technical solution of the present invention and improved design all should not got rid of outside protection scope of the present invention.
Claims (6)
1. large-scale synchro wind generator group of electric stepless change, it is characterized in that: it comprises the synchronous generator (9) of axial fan hub (1), an electric stepless speed variator and a routine; Described electric stepless speed variator comprises a generator and a motor, and the shared rotor body of this generator and motor (7), magnetic circuit are independent mutually; Described hub spindle (14) links to each other with generator shaft (16) in the electric stepless speed variator, directly drives generator armature (3) by wheel hub (1), and this generator mainly is made up of generator armature (3) and the internal rotor (4) on the rotor body (7); Motor in the electricity stepless speed variator mainly is made up of motor armature (6) and the external rotor (5) on the rotor body (7); The electric via controller I (12) that is sent by this generator and controller II (13) the drive motor rotor of may command motor speed form electric stepless speed variator; Described rotor body (7) links to each other by transmission output shaft (22) and coupling (8) synchronous generator (9) with routine, the electricity that driving synchronous generator (9) sends be connected to the grid after transformer (10) boosts (11).
2. the large-scale synchro wind generator group of electric stepless change according to claim 1 is characterized in that: the generator in the described electric stepless speed variator can be induction generator, permanent magnet generator, also can be switch reluctance generator; Motor in the electricity stepless speed variator can be asynchronous motor, permanent magnet motor, also can be switched reluctance motor.
3. the large-scale synchro wind generator group of electric stepless change according to claim 1 is characterized in that: described wheel hub main bearing (15) adopts double-row conical bearing.
4. the large-scale synchro wind generator group of electric stepless change according to claim 1, it is characterized in that: the generator of described electric stepless speed variator and motor the two ends of shared rotor body (7) speed changer fore bearing (18) and speed changer rear bearing (21) are housed respectively, this fore bearing (18) and rear bearing (21) are deep groove ball bearing or have other form bearing of identical functions.
5. the large-scale synchro wind generator group of electric stepless change according to claim 1 is characterized in that: the rotor body of described electric stepless speed variator (7) is connected with the synchronous generator (9) of routine by transmission output shaft (22), flexible coupling (8).
6. the large-scale synchro wind generator group of electric stepless change according to claim 1 is characterized in that: described conventional synchronous generator (9) is a main generator, and this main generator is installed on the frame (23) through elastic support (17).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110171109A CN102269132A (en) | 2011-06-23 | 2011-06-23 | Electric stepless speed change large-sized synchronous wind generating unit |
| PCT/CN2011/001091 WO2012174684A1 (en) | 2011-06-23 | 2011-07-01 | Electric continuously variable large synchronous wind power generator set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110171109A CN102269132A (en) | 2011-06-23 | 2011-06-23 | Electric stepless speed change large-sized synchronous wind generating unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102269132A true CN102269132A (en) | 2011-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110171109A Pending CN102269132A (en) | 2011-06-23 | 2011-06-23 | Electric stepless speed change large-sized synchronous wind generating unit |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102269132A (en) |
| WO (1) | WO2012174684A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150354533A1 (en) * | 2012-10-31 | 2015-12-10 | 2-B Energy B.V. | Method for operating a wind turbine, wind turbine, and control means for a wind turbine |
| CN108011493A (en) * | 2017-11-01 | 2018-05-08 | 山东洁盟节能环保技术有限公司 | A kind of permanent-magnet speed governor of fixed magnetic gap |
| CN113007028A (en) * | 2021-03-23 | 2021-06-22 | 上海电气风电集团股份有限公司 | Wind generating set |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016223922A1 (en) | 2016-12-01 | 2018-06-07 | Volkswagen Aktiengesellschaft | Traction transmission and drive unit for a motor vehicle |
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| WO2004040740A1 (en) * | 2002-10-29 | 2004-05-13 | Siemens Aktiengesellschaft | Dual-supply induction machine comprising a second counter-rotating rotor |
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| CN86201099U (en) * | 1986-02-28 | 1987-05-13 | 柏飞 | Electromegnetic automatic stepless gearbox |
| CN201260146Y (en) * | 2008-08-27 | 2009-06-17 | 华锐风电科技有限公司 | Hybrid wind generator set |
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2011
- 2011-06-23 CN CN201110171109A patent/CN102269132A/en active Pending
- 2011-07-01 WO PCT/CN2011/001091 patent/WO2012174684A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6127739A (en) * | 1999-03-22 | 2000-10-03 | Appa; Kari | Jet assisted counter rotating wind turbine |
| WO2004040740A1 (en) * | 2002-10-29 | 2004-05-13 | Siemens Aktiengesellschaft | Dual-supply induction machine comprising a second counter-rotating rotor |
| CN101016882A (en) * | 2007-01-05 | 2007-08-15 | 东南大学 | Electric stepless speed change double power flow wind-power generator group |
| CN101272084A (en) * | 2008-05-16 | 2008-09-24 | 东南大学 | Electro-mechanical mixed stepless speed-changing wind power generation plant |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150354533A1 (en) * | 2012-10-31 | 2015-12-10 | 2-B Energy B.V. | Method for operating a wind turbine, wind turbine, and control means for a wind turbine |
| CN108011493A (en) * | 2017-11-01 | 2018-05-08 | 山东洁盟节能环保技术有限公司 | A kind of permanent-magnet speed governor of fixed magnetic gap |
| CN113007028A (en) * | 2021-03-23 | 2021-06-22 | 上海电气风电集团股份有限公司 | Wind generating set |
| CN113007028B (en) * | 2021-03-23 | 2022-05-20 | 上海电气风电集团股份有限公司 | Wind generating set |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012174684A1 (en) | 2012-12-27 |
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Application publication date: 20111207 |