CN202140254U - Large E-CVT (electronic continuously variable transmission) synchronous wind power generator set - Google Patents

Large E-CVT (electronic continuously variable transmission) synchronous wind power generator set Download PDF

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Publication number
CN202140254U
CN202140254U CN201120216145U CN201120216145U CN202140254U CN 202140254 U CN202140254 U CN 202140254U CN 201120216145 U CN201120216145 U CN 201120216145U CN 201120216145 U CN201120216145 U CN 201120216145U CN 202140254 U CN202140254 U CN 202140254U
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China
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generator
motor
rotor
synchronous
electric
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Expired - Lifetime
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CN201120216145U
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Inventor
肖珊彩
施文江
秦明
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Guodian United Power Technology Co Ltd
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Guodian United Power Technology Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction

Abstract

The utility model provides a large E-CVT (electronic continuously variable transmission) synchronous wind power generator set. The large E-CVT synchronous wind power generator set comprises a fan hub, an E-CVT and a conventional synchronous generator, wherein the electronic continuously variable transmission comprises a generator and a motor, the generator and the motor share a same rotor body to form the E-CVT by adopting an electronic power control technology so as to replace the traditional variable ratio mechanical gearbox. In the large synchronous wind power generator set, the motor in the E-CVT can be used for driving the conventional synchronous generator to operate at a synchronous rotating speed, and the motor and the conventional synchronous generator can be combined in the same grid to generate electricity. The large E-CVT synchronous wind power generator set has the advantages of high reliability, low cost and high electrical quality and is suitable for large E-CVT synchronous wind power generator sets of megawatt and above levels.

Description

The large-scale synchro wind generator group of a kind of electric stepless change
Technical field
The utility model 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.Power is main with double-fed generator set and direct-driving type generator set mainly in MW class and above large-scale wind electricity unit at present.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 increasingly high.In addition, these two types of generators are compared with conventional synchronous generator at the aspect of performance that electric network reactive-load enabling capabilities and low voltage are passed through, and are all less better.
The model utility content
Exist dimensional weight big or need the deficiency of high power gearbox in order to overcome existing large-scale wind electricity unit; The purpose of the utility model is: 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 utility model adopts conventional synchronous generator, still can satisfy the severe requirement of electrical network to the wind-powered electricity generation unit.
It is following that the utility model solves the technological scheme that its technical problem adopted:
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 through coupling, drives synchronous generator, and the electricity that sends is connected to the grid after transformer boosts.
The utility model 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.The utility model Large-scale Wind Turbines 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 beneficial effect of the utility model is: the electricity consumption stepless speed changes devices replaces a kind of mechanical type gear-box of variable speed; Can the power of wheel hub 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, made 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
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Fig. 1 is the fundamental diagram of the large-scale synchro wind generator group of the utility model electricity stepless change.
Fig. 2 is the structural representation of the utility model.
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 shafts, 17. elastic support; 18. rotating disk before the speed changer fore bearing, 19. rotors, 20. shells, 21. speed changer rear bearings, 22. transmission output shafts, 23. frames.
Embodiment
Shown in Figure 1 is the fundamental diagram of the large-scale synchro wind generator group of a kind of electric stepless change of the utility model.The working principle of the utility model unit when normal power generation is following: 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 II13 controls the rotating speed of 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.
Shown in Figure 2 is an embodiment of the structure of the large-scale synchro wind generator group of a kind of electric stepless change of the utility model.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 through slip ring 2 successively.Rotor body 7 links to each other with conventional synchronous generator 9 through transmission output shaft 22, coupling 8, drives synchronous generator 9 generatings, after transformer 10 boosts, is connected to the grid 11.
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, other form bearing that this fore bearing 18 and rear bearing 21 are deep groove ball bearing or have identical functions respectively.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 explain the utility model, and wherein the structure of each parts, Placement, position etc. all are to change to some extent.Every equivalents of on the basis of the utility model technological scheme, carrying out and improved design all should not got rid of outside the protection domain of the utility model.

Claims (6)

1. large-scale synchro wind generator group of electric stepless change is characterized in that: it comprises axial fan hub (1), electric stepless speed variator and a synchronous generator (9); 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 with synchronous generator (9) with coupling (8) through transmission output shaft (22), the electricity that driving synchronous generator (9) sends after transformer (10) boosts, be connected to the grid (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.
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 synchronous generator (9) through 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 synchronous generator (9) is a main generator, and this main generator is installed on the frame (23) through elastic support (17).
CN201120216145U 2011-06-23 2011-06-23 Large E-CVT (electronic continuously variable transmission) synchronous wind power generator set Expired - Lifetime CN202140254U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201120216145U CN202140254U (en) 2011-06-23 2011-06-23 Large E-CVT (electronic continuously variable transmission) synchronous wind power generator set

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Application Number Priority Date Filing Date Title
CN201120216145U CN202140254U (en) 2011-06-23 2011-06-23 Large E-CVT (electronic continuously variable transmission) synchronous wind power generator set

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102269132A (en) * 2011-06-23 2011-12-07 国电联合动力技术有限公司 Electric stepless speed change large-sized synchronous wind generating unit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102269132A (en) * 2011-06-23 2011-12-07 国电联合动力技术有限公司 Electric stepless speed change large-sized synchronous wind generating unit
WO2012174684A1 (en) * 2011-06-23 2012-12-27 国电联合动力技术有限公司 Electric continuously variable large synchronous wind power generator set

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Granted publication date: 20120208

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