CN103161680A - Double-air-gap superconductive direct-drive wind power generating set - Google Patents
Double-air-gap superconductive direct-drive wind power generating set Download PDFInfo
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- CN103161680A CN103161680A CN2013101299942A CN201310129994A CN103161680A CN 103161680 A CN103161680 A CN 103161680A CN 2013101299942 A CN2013101299942 A CN 2013101299942A CN 201310129994 A CN201310129994 A CN 201310129994A CN 103161680 A CN103161680 A CN 103161680A
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- rotor
- superconduction
- field coil
- air gap
- driven generator
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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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
Abstract
The invention relates to a double-air-gap superconductive direct-drive wind power generating set which comprises a rack, a generator shell which is fixed on the rack, a main shaft which is fixedly connected with the rack, a hub which is rotationally supported on the main shaft, a fixedly arranged outer stator, a fixedly-arranged inner stator, and a superconductive rotor which is arranged between the outer stator and the inner stator and interacts with the hub. By the adoption of the structure, the weight and cost of the main shaft are reduced substantially, and efficiency and reliability of a direct-drive wind power generating set are improved.
Description
Technical field
The present invention relates to the wind-driven generator field, particularly relate to a kind of pair of air gap superconduction direct wind-driven generator group.
Background technique
In the direct-drive wind power generation technical field, directly drive generator capacity increasing, volume and weight are also just increasing, especially in megawatt-grade high-power direct-drive wind power generation field.Traditional direct-drive permanent-magnetism generator reaches and directly drives electric excitation generator, and its weight has more and more become the restraining factors of wind-driven generator single-machine capacity toward great development with volume.
After employing was directly driven Current Field in Superconducting Synchronous Generator, the rotor winding adopted the superconducting wire formation of doing cooling medium with liquid helium or liquid nitrogen, and the volume and weight of generator reduces greatly; Simultaneously, because the superconducting generator loss is little, efficient is high, has greatly improved the efficient of blower fan unit complete machine.Both simplify set structure, reduced cost of transportation, improved again overall efficiency and whole aircraft reliability.
At present, superconducting generator still is in continuous research and development and improves the stage, and wherein, how further improving torque density is exactly one of important improvement target of current superconduction direct wind-driven generator group.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of pair of air gap superconduction direct wind-driven generator group, makes that its torque density is higher, volume is less, and existing generator volume is excessive, the deficiency of transportation difficulty thereby overcome.
For solving the problems of the technologies described above, the invention provides a kind of pair of air gap superconduction direct wind-driven generator group, comprise frame, be fixed on the generator casing on frame, the main shaft that is fixedly connected with frame, rotating be supported on the wheel hub on main shaft, hard-wired external stator and inner stator and between inside and outside stator and with the superconducting rotor of wheel hub interlock.
As a modification of the present invention, the present invention also can realize by following proposal:
Described main shaft is hollow stationary axle.
Front, bearing is installed on described main shaft, and is set with hollow rotatingshaft on the outer shroud of forward and backward bearing, described rotor is by hollow rotatingshaft and wheel hub interlock.
Described external stator is arranged on the generator casing inwall, and inner stator is by inner stator support and rear flange fixed installation; Described rotor one end is fixedly connected with hollow rotatingshaft by the rotor rotating disk, and the other end is supported on the inner stator support by alignment bearing is rotating.
Described fore bearing and rear bearing are selfaligning bearing.
The winding of described external stator, inner stator forms by circular copper wire or flat type copper wire coiling.
Described rotor comprises superconduction field coil and the support of rotor superconduction field coil in the outer superconduction field coil of rotor, rotor, and in the outer superconduction field coil of rotor and rotor, the superconduction field coil is fixedly installed in respectively the outside and the inboard that rotor superconduction field coil supports.
In the outer superconduction field coil of described rotor and rotor, the superconduction field coil is formed by hts tape or low-temperature superconducting wire coiling.
Described rotor superconduction field coil is supported for the groove type structure, and in the outer superconduction field coil of the rotor in same groove, rotor, the superconduction field coil is tangentially fixing by coil pressure plate, coil clamping screw and coil gland nut.
Described rotor superconduction field coil support, coil pressure plate coil clamping screw, gland nut are made by low temperature resistant material.
Described inner and outer Rotator superconduction field coil pressing plate along rotor superconduction field coil support axial direction be whole length or segmentation.
In the interstice of the first air gap that external stator and rotor form and rotor and inner stator formation, be respectively equipped with insulating sleeve, low-temperature (low temperature) vessel I, low-temperature (low temperature) vessel II, three layers of front end-plate and three layers of end plate; Insulating sleeve is fixed with corresponding front end-plate and end plate by seam is installed respectively, forms the vacuum layer I; The low-temperature (low temperature) vessel I is fixed with corresponding front end-plate, end plate by seam is installed respectively, forms the vacuum layer II; The low-temperature (low temperature) vessel II is fixed with corresponding front end-plate, end plate by seam is installed respectively, forms inner cooling channel.
Described outer low-temperature (low temperature) vessel, interior low-temperature (low temperature) vessel, internal layer front end-plate and internal layer end plate are made by low temperature resistant material.
After adopting such design, the present invention has the following advantages at least:
1, the present invention has adopted the mode of structure that stationary axle supports in transmission, can use so expensive double-row conical bearing (nautilus bearing), and can adopt selfaligning bearing commonly used in the wind-powered electricity generation unit.Therefore, the present invention program's bearing cost has saving by a relatively large margin.
2, the present invention does not adopt heavy forging main shaft, but has adopted hollow stationary axle to bear and transmit the load of wheel hub, and such structure has significantly reduced weight and the cost of main shaft.
3, the rotor alignment bearing system of the rotor rear end in the present invention, guaranteed motor reliably in running, and concentric all the time between stator and rotor guaranteed the Security of generator in running.
4, the rotor excitation coil supporting structure of directly driving generator and the rotor excitation coil hold down gag in the present invention; protected reliably the rotor superconducting coil can be because of the effect of stress and strain or the impact of instantaneous short circuit fault, and splitting of producing, tired or fracture.
5, the synchronous generator unit is directly driven in two air gap superconductions, further improved the torque density that directly drives superconducting generator, reduce directly to drive weight and the volume of superconducting generator, reduced the cost of transportation of directly driven wind-powered unit complete machine, improved efficient and the reliability of directly driven wind-powered unit.
6, the rotor structure in the present invention has guaranteed that reliably rotor superconduction field coil effective cooling is to critical temperature or following to realize and to keep its superconductivity.
Description of drawings
Above-mentioned is only the general introduction of technical solution of the present invention, and for can clearer understanding technological means of the present invention, the present invention is described in further detail below in conjunction with accompanying drawing and embodiment.
Fig. 1 is the overall construction drawing of a kind of pair of air gap superconduction direct wind-driven generator group of the present invention.
Fig. 2 is the rotor structure figure that generator set is directly driven in a kind of pair of air gap superconduction of the present invention.
Fig. 3 is the rotor sectional view that generator set is directly driven in a kind of pair of air gap superconduction in the present invention.
Fig. 4 is the partial enlarged drawing at I place in Fig. 2.
Fig. 5 is the partial enlarged drawing at II place in Fig. 2.
Embodiment
See also shown in Figure 1ly, only identify the main parts size structure of general structure in figure, some clamping bolts and nut are not done sign.the present invention relates to a kind of pair of air gap superconduction direct wind-driven generator group, it mainly comprises: wheel hub 1, fore bearing section cover 2, stationary axle 3, hollow rotatingshaft 4, forward flange 5, rotor rotating disk 6, generator casing 7, external stator winding 8, external stator core 9, rotor 10, inner-stator iron core 11, inner stator support 12, inner stator winding 13, rotor rear support 14, rear flange 15, frame 16, rotor alignment bearing section cover 17, rear bearing section cover 18, rotor alignment bearing support 19, slip ring system 20, axle sleeve 21, rotor brake disc 22, rotor brake mechanism 23 and rotor locking device 24.
Stationary axle 3 is fastenedly connected through clamping bolt with frame 16, and fore bearing section cover 2 and rear bearing section cover 18 are set in the two ends of stationary axle 3, and axle sleeve 21 is set on stationary axle 3 and is placed in respectively fore bearing section cover 2 and the interior interannular of rear bearing section cover 18; Hollow rotatingshaft 4 is set on the fore bearing section cover 2 and rear bearing section cover 18 of stationary axle 3, and the end cap of fore bearing section cover 2 is fixed on hollow rotatingshaft 4 front ends through clamping bolt, and the end cap of rear bearing section cover 18 is fixed on hollow rotatingshaft 4 rear ends through clamping bolt.
Wheel hub 1 is connected with hollow rotatingshaft 4 with bolt via the seam flange, and hollow rotatingshaft 4 and rotor rotating disk 6 are fastenedly connected, and rotor rotating disk 6 can transmit the moment of torsion of wheel hub 1.
External stator winding 8 consists of external stator with external stator core 9, and inner-stator iron core 11 consists of inner stator with inner stator winding 13.External stator is installed on generator casing 7, and generator casing 7 front ends and forward flange 5 are fastenedly connected, and rear end and rear flange 15, frame 16 are fastenedly connected, and inner stator is installed on inner stator support 13.
Rotor 10 is between external stator and inner stator, and rotor 10 front ends and rotor rotating disk 6 are fastenedly connected, and the rear end is fastenedly connected through seam and rotor rear support 14.External stator and rotor 10 form the first air gap, and rotor 10 forms interstice with inner stator.
Rotor rear support 14 is installed on rotor alignment bearing section cover 17, rotor alignment bearing section cover 17 is arranged between inner stator support 12 and rear flange 15, be set on rotor alignment bearing support 19, rotor alignment bearing support 19 1 ends are connected with inner stator support 12, and the other end is fixed together by rear flange 15 and frame 16.
The engine room cover that glass fibre reinforced plastic structure also is installed in frame 16 outsides.
More excellent, in the present invention, stationary axle 3 adopts hollow stationary axle.
The present invention's fore bearing used, rear bearing are selfaligning bearing, and the alignment bearing in rotor alignment bearing section cover 17 is deep groove ball bearing, has reduced weight and the cost of main shaft.
See also Fig. 2, shown in Figure 3, the present invention also provides a kind of superconducting rotor that directly drives superconductive wind driven generator for two air gaps, comprising: superconduction field coil 1010 in rotor superconduction field coil support 108, the outer superconduction field coil 109 of rotor and rotor.
Rotor superconduction field coil supports 108 outsides and is provided with some outer protrusion structures, its corresponding inboard is provided with the identical projecting inward structure of quantity, the outer superconduction field coil 109 of rotor is set on the outer protrusion structure of rotor superconduction field coil support 108, and in rotor, superconduction field coil 1010 is set on the projecting inward structure of rotor superconduction field coil support 108.
Rotor superconduction field coil supports and forms a groove between 108 adjacent outer protrusion structures, and is tangentially fixing with the some groups of hold down gags that are comprised of external rotor superconduction field coil pressing plate 1011, external rotor superconduction field coil clamping screw 1012, external rotor superconduction field coil gland nut 1013 between the outer superconduction field coil 109 of the rotor in same groove.It can be whole length that external rotor superconduction field coil pressing plate 1011 supports 108 axial directions along rotor superconduction field coil, can be also segmentation.
Rotor superconduction field coil supports in the interior rotor of 108 same grooves tangentially fixing with the some groups of hold down gags that are comprised of internal rotor superconduction field coil pressing plate 1014, internal rotor superconduction field coil clamping screw 1015, internal rotor superconduction field coil gland nut 1016 between superconduction field coil 1010.It can be whole length that internal rotor superconduction field coil pressing plate 1014 supports 108 axial directions along rotor superconduction field coil, can be also segmentation.
In the first air gap of 10 of external stator and rotors, be provided with outer insulating sleeve 105, outer low-temperature (low temperature) vessel I 106 and outer low-temperature (low temperature) vessel II 107; In interstice between rotor 10 and inner stator, be provided with interior insulating sleeve 1025, interior low-temperature (low temperature) vessel I 1026 and interior low-temperature (low temperature) vessel II 1027.Front end at rotor 10 is provided with front end-plate I 102, front end-plate II 103, front end-plate III 104; Be provided with end plate III 1020 in the rear end of rotor 10, end plate II 1021, end plate I 1022.Be respectively arranged with the installation seam on front end-plate I 102, front end-plate II 103, front end-plate III 104; Also be respectively arranged with the installation seam on end plate III 1020, end plate II 1021, end plate I 1022.
Interior insulating sleeve 1025 is fixed together by installation seam and front end-plate I 102, end plate I 1022 respectively and forms interior vacuum layer II 1028, and the joint is respectively arranged with sealing gasket 101; Interior low-temperature (low temperature) vessel I 1026 is fixed together by installation seam and front end-plate II 103, end plate II 1021 respectively and forms interior vacuum layer I 1029, and the joint is respectively arranged with sealing gasket 101; Interior low-temperature (low temperature) vessel II 1027 is fixed together by installation seam and front end-plate III 104, end plate III 1020 respectively and forms inner cooling channel 1030, and the joint is respectively arranged with sealing gasket 101.
Be provided with vacuum pipe system 1023 and refrigeration plant 1024 in the rotor rear end.
Outer vacuum layer I 1017, outer vacuum layer II 1018, interior vacuum layer I 1028, interior vacuum layer II 1029 link together with vacuum pipe system 1023 respectively.
Wherein, external stator, inner stator are under the normal temperature working environment.
Press-loading apparatus in rotor superconduction field coil support 108, the outer superconduction field coil 109 of rotor, rotor between superconduction field coil 1010 and the inside and outside superconduction field coil of rotor is under the low-temperature working environment.
Outer vacuum layer I 1017, outer vacuum layer II 1018, outer cooling channel 1019 have certain temperature gradient.
Interior vacuum layer I 1028, interior vacuum layer II 1029, inner cooling channel 1030 have certain temperature gradient.
Rotor superconduction field coil supports 108 and is made by low temperature resistant material such as aluminium, inconel or titanium alloy or glass fibre reinforced plastics etc.
External rotor superconduction field coil pressing plate 1011, external rotor superconduction field coil clamping screw 1012, external rotor superconduction field coil gland nut 1013 are to be made by low temperature resistant material such as aluminium, inconel or titanium alloy or glass fibre reinforced plastics etc.
Internal rotor superconduction field coil pressing plate 1014, internal rotor superconduction field coil clamping screw 1015, internal rotor superconduction field coil gland nut 1016 are to be made by low temperature resistant material such as aluminium, inconel or titanium alloy or glass fibre reinforced plastics etc.
Outer low-temperature (low temperature) vessel II 107, interior low-temperature (low temperature) vessel II 1027, front end-plate III 104, end plate III 1020 are to be made by low temperature resistant material such as aluminium, inconel or titanium alloy or glass fibre reinforced plastics etc.
External stator core 9, inner-stator iron core 11 are formed by conventional silicon steel plate stacking.
External stator winding 8, inner stator winding 13 are formed by circular copper wire or flat type copper wire coiling.
In the outer superconduction field coil 109 of rotor, rotor, superconduction field coil 1010 is formed by hts tape or low-temperature superconducting wire coiling.
The above; it is only preferred embodiment of the present invention; be not that the present invention is done any pro forma restriction, those skilled in the art utilize the technology contents of above-mentioned announcement to make a little simple modification, equivalent variations or modification, all drop in protection scope of the present invention.
Claims (13)
1. two air gap superconduction direct wind-driven generator group is characterized in that comprising frame, is fixed on the generator casing on frame, the main shaft that is fixedly connected with frame, the rotating superconducting rotor that is supported on the wheel hub on main shaft, hard-wired external stator and inner stator and links between inside and outside stator and with wheel hub.
2. a kind of pair of air gap superconduction direct wind-driven generator group according to claim 1, it is characterized in that: described main shaft is hollow stationary axle.
3. a kind of pair of air gap superconduction direct wind-driven generator group according to claim 1, it is characterized in that: front, bearing is installed on described main shaft, and being set with hollow rotatingshaft on the outer shroud of forward and backward bearing, described rotor is by hollow rotatingshaft and wheel hub interlock.
4. a kind of pair of air gap superconduction direct wind-driven generator group according to claim 3 is characterized in that:
Described external stator is arranged on the generator casing inwall, and inner stator is by inner stator support and rear flange fixed installation;
Described rotor one end is fixedly connected with hollow rotatingshaft by the rotor rotating disk, and the other end is supported on the inner stator support by alignment bearing is rotating.
5. a kind of pair of air gap superconduction direct wind-driven generator group according to claim 3, it is characterized in that: described fore bearing and rear bearing are selfaligning bearing.
6. a kind of pair of air gap superconduction direct wind-driven generator group according to claim 1, it is characterized in that: the winding of described external stator, inner stator forms by circular copper wire or flat type copper wire coiling.
7. one kind is used for described pair of air gap superconduction direct wind-driven generator group of claim 1-6 any one, it is characterized in that: described rotor comprises superconduction field coil and the support of rotor superconduction field coil in the outer superconduction field coil of rotor, rotor, and in the outer superconduction field coil of rotor and rotor, the superconduction field coil is fixedly installed in respectively the outside and the inboard that rotor superconduction field coil supports.
8. a kind of pair of air gap superconduction direct wind-driven generator group according to claim 7 is characterized in that: in the outer superconduction field coil of described rotor and rotor, the superconduction field coil is formed by hts tape or low-temperature superconducting wire coiling.
9. a kind of pair of air gap superconduction direct wind-driven generator group according to claim 7, it is characterized in that: described rotor superconduction field coil is supported for the groove type structure, and in the outer superconduction field coil of the rotor in same groove, rotor, the superconduction field coil is tangentially fixing by coil pressure plate, coil clamping screw and coil gland nut.
10. a kind of pair of air gap superconduction direct wind-driven generator group according to claim 9, it is characterized in that: described rotor superconduction field coil support, coil pressure plate coil clamping screw, gland nut are made by low temperature resistant material.
11. a kind of pair of air gap superconduction direct wind-driven generator group according to claim 9 is characterized in that: described inner and outer Rotator superconduction field coil pressing plate along rotor superconduction field coil support axial direction be whole length or segmentation.
12. the described a kind of pair of air gap superconduction direct wind-driven generator group of any one according to claim 1-6 is characterized in that:
In the interstice of the first air gap that external stator and rotor form and rotor and inner stator formation, be respectively equipped with insulating sleeve, low-temperature (low temperature) vessel I, low-temperature (low temperature) vessel II, three layers of front end-plate and three layers of end plate;
Insulating sleeve is fixed with corresponding front end-plate and end plate by seam is installed respectively, forms the vacuum layer I;
The low-temperature (low temperature) vessel I is fixed with corresponding front end-plate, end plate by seam is installed respectively, forms the vacuum layer II;
The low-temperature (low temperature) vessel II is fixed with corresponding front end-plate, end plate by seam is installed respectively, forms inner cooling channel.
13. a kind of pair of air gap superconduction direct wind-driven generator group according to claim 12, it is characterized in that: described outer low-temperature (low temperature) vessel, interior low-temperature (low temperature) vessel, internal layer front end-plate and internal layer end plate are made by low temperature resistant material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310129994.2A CN103161680B (en) | 2013-04-15 | 2013-04-15 | Double-air-gap superconductive direct-drive wind power generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310129994.2A CN103161680B (en) | 2013-04-15 | 2013-04-15 | Double-air-gap superconductive direct-drive wind power generating set |
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| Publication Number | Publication Date |
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| CN103161680A true CN103161680A (en) | 2013-06-19 |
| CN103161680B CN103161680B (en) | 2015-04-01 |
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| CN201310129994.2A Active CN103161680B (en) | 2013-04-15 | 2013-04-15 | Double-air-gap superconductive direct-drive wind power generating set |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4105478A1 (en) | 2021-06-15 | 2022-12-21 | General Electric Renovables España S.L. | Supporting structures and methods for a central frame of a direct-drive wind turbine |
| EP4283117A1 (en) * | 2022-05-25 | 2023-11-29 | General Electric Renovables España S.L. | Assemblies for wind turbines and methods |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101539110A (en) * | 2009-01-22 | 2009-09-23 | 北京美尔斯通科技发展股份有限公司 | High-temperature superconducting wind generating set |
| CN102769374A (en) * | 2012-05-22 | 2012-11-07 | 国电联合动力技术有限公司 | Direct drive type wind turbine generator system |
| CN103161678A (en) * | 2013-04-11 | 2013-06-19 | 国电联合动力技术有限公司 | Built-in large-scale superconduction direct drive wind generating set |
| CN203239502U (en) * | 2013-04-15 | 2013-10-16 | 国电联合动力技术有限公司 | Double-air-gap superconductive direct-drive wind power generating set |
-
2013
- 2013-04-15 CN CN201310129994.2A patent/CN103161680B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101539110A (en) * | 2009-01-22 | 2009-09-23 | 北京美尔斯通科技发展股份有限公司 | High-temperature superconducting wind generating set |
| CN102769374A (en) * | 2012-05-22 | 2012-11-07 | 国电联合动力技术有限公司 | Direct drive type wind turbine generator system |
| CN103161678A (en) * | 2013-04-11 | 2013-06-19 | 国电联合动力技术有限公司 | Built-in large-scale superconduction direct drive wind generating set |
| CN203239502U (en) * | 2013-04-15 | 2013-10-16 | 国电联合动力技术有限公司 | Double-air-gap superconductive direct-drive wind power generating set |
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