CN202334039U - Offshore type superconductive wind driven generator - Google Patents
Offshore type superconductive wind driven generator Download PDFInfo
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- CN202334039U CN202334039U CN2011204972108U CN201120497210U CN202334039U CN 202334039 U CN202334039 U CN 202334039U CN 2011204972108 U CN2011204972108 U CN 2011204972108U CN 201120497210 U CN201120497210 U CN 201120497210U CN 202334039 U CN202334039 U CN 202334039U
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- rotor
- coil
- driven generator
- assembly
- stator
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- 238000001816 cooling Methods 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 7
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 40
- 229910052734 helium Inorganic materials 0.000 claims description 37
- 239000001307 helium Substances 0.000 claims description 37
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 37
- 239000002887 superconductor Substances 0.000 claims description 31
- 238000004804 winding Methods 0.000 claims description 26
- 229910052742 iron Inorganic materials 0.000 claims description 20
- 238000012546 transfer Methods 0.000 claims description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 12
- 239000010949 copper Substances 0.000 claims description 12
- 229910052802 copper Inorganic materials 0.000 claims description 12
- 239000003507 refrigerant Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 7
- 229910021521 yttrium barium copper oxide Inorganic materials 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 4
- 229910001369 Brass Inorganic materials 0.000 claims description 3
- BTGZYWWSOPEHMM-UHFFFAOYSA-N [O].[Cu].[Y].[Ba] Chemical compound [O].[Cu].[Y].[Ba] BTGZYWWSOPEHMM-UHFFFAOYSA-N 0.000 claims description 3
- 239000010951 brass Substances 0.000 claims description 3
- 239000011796 hollow space material Substances 0.000 claims description 3
- 230000001771 impaired effect Effects 0.000 claims description 3
- 238000003475 lamination Methods 0.000 claims description 3
- 238000005057 refrigeration Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003653 coastal water Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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Abstract
The utility model relates to an offshore type superconductive wind driven generator which is applicable to inshore regions. The offshore type superconductive wind driven generator comprises a stator system, a rotor system and a cooling system, wherein a rotor coil subassembly of the rotor system comprises a magnet framework, high-temperature superconductive coils and coil fastening pieces, wherein the magnet framework is in an annular runway shape and a hollow part is a refrigerating medium flow channel; an annular groove is arranged on the side face of the magnet framework and double layers of the high-temperature superconductive coils are wound through the groove; the coil fastening pieces for preventing the high-temperature superconductive coils from being loosened outwards are arranged at the outer parts of the high-temperature superconductive coils; meanwhile, one ends of the coil fastening pieces are provided with current lead wire interfaces so as to be convenient to thread the high-temperature superconductive coils; and the cooling system is used for a cooling rotor system to realize closed loop cooling work. The offshore type superconductive wind driven generator disclosed by the utility model has the advantages of large single-machine capacity, small volume, light weight and high power density; and a rotor coil of the rotor system is made of a high-temperature superconductive material and has no resistance heating loss, so that the electric efficiency is high.
Description
Technical field
The utility model relates to the superconduction wind-driven generator that is applicable to the coastal waters, and what be specifically related to is a kind of rotor by high-temperature superconducting magnet is formed, stator is made up of conventional copper coil naval counterpart superconduction wind-driven generator.
Background technology
Traditional wind-driven generator all can receive many technical obstacles because of the restriction that receives its electromechanical properties in the process of its single-machine capacity dilatation.Because environment is abominable, difficult in maintenance and cost is high, therefore the stability to blower fan has proposed high requirement to offshore wind farm again.
For blower fan, what failure rate was the highest is gear box.Parts in the gear box are along with blower fan high speed rotating, very easily wearing and tearing year in year out; Simultaneously, it has increased the mechanical load and the friction loss of whole blower fan system, thereby has greatly increased the maintenance cost of blower fan system and reduced useful life of blower fan.Moreover, also exponentially doubles long the failure rate of gear box along with the increase of fan capacity.Therefore, the exploitation direct-drive aerogenerator is formed the main development trend for world's wind power technology.
Existing direct-drive aerogenerator generally adopts permanent magnet generator, but because wind-driven generator is low with rated speed, output torque is big, and motor design has been proposed higher requirement.It is a lot of that tradition is directly driven the number of poles of unit, usually 80 extremely more than, volume and weight is very big, and the permanent magnetic part of permanent magnet direct-drive unit exists long-term impact shock and the magnetic stability problem under the variations in temperature condition on a large scale.Simultaneously, permanent magnet receives the current material technology limitation, and Surface field is difficult to further raising, thereby has restricted the increase of single-machine capacity.
The development of superconductor technology makes the current-carrying performance of existing superconducting tape that great raising arranged, compare copper conductor unit are current capacity and be copper cash 150 times.Thereby, the magnet exciting coil of superconducting tape coiling has appearred utilizing, and this structure can produce higher excitation field, thereby has improved the energy density and the power density of wind-driven generator, has reduced the volume and weight of complete machine.For example; Open day is 2009-09-09, and publication number is the Chinese patent document of CN 101527498, discloses a kind of system that is used to generate electricity and has comprised that superconduction directly drives wind-driven generator; It comprises armature coil that is made up of first superconductor and the magnet exciting coil that is made up of second superconductor; Wherein, at the run duration of generator, armature coil and magnet exciting coil carry out electromagnetic communication; And the magnet exciting coil response produces magnetic field through its exciting current, and output current is responded in magnetic field in the armature coil that generates electric power output.
The utility model content
The utility model is for solving the problems of the technologies described above; A kind of naval counterpart superconduction wind-driven generator of direct-drive type is provided; Ban the design of gear box, avoided fully because the various hidden danger that gear box brings, reduced the cost of failure rate of machinery and periodic maintenance; Improved the efficient and the reliability of blower fan simultaneously, solved the problem that volume and weight that traditional permanent magnet direct-drive blower fan causes significantly increases when single-machine capacity increases.
The technical scheme of the utility model is following:
Naval counterpart superconduction wind-driven generator comprises stator system and rotor-support-foundation system, and rotor-support-foundation system is positioned at the central shaft position of stator system, and rotor-support-foundation system is around motor center axle rotation work, and central shaft connects wind wheel; Said stator system comprises the stator iron yoke that stator winding assembly is outside with being fixed in stator winding assembly, and stator winding assembly comprises copper cash winding, stator teeth groove and coiling slot wedge, and the copper cash winding passes through the winding slot forelock in the stator teeth groove; Said rotor-support-foundation system comprises rotor coil assembly, rotor bearing assembly, rotor back iron; The rotor coil assembly is fixed on the rotor supports assembly; The rotor supports assembly is fixed on the rotor back iron, it is characterized in that: said rotor coil assembly comprises magnet skeleton, high temperature superconductor coil and coil fastener; Said magnet skeleton is the runway shape ringwise; Hollow space is the refrigerant runner; The side that is positioned at the magnet skeleton is provided with annular groove, twines double-deck high temperature superconductor coil through groove, and the high temperature superconductor coil outer setting has the coil fastener that prevents that high temperature superconductor coil from outwards unclamping; An end of coil fastener is provided with the current feed interface simultaneously, so that pass high-temperature superconductive lead wire.
Said magnet skeleton also is provided with that being used to prevents to expand with heat and contract with cold and makes the impaired skeleton shrinkage joint of magnet framework deformation perpendicular to the circumferential direction of skeleton, and no matter how the magnet skeleton expands and shrink, can operate as normal, and useful life is longer.
Said magnet skeleton adopts and is processed by brass; Said high temperature superconductor coil adopts yttrium barium copper oxide high temperature superconducting materia (YBCO)
.
In order to reduce the heat load that high-temperature superconducting magnet bears, the outside of said high temperature superconductor coil is a high vacuum environment, in the outer setting of high temperature superconductor coil the several layers heat insulation layer is arranged.
Said rotor bearing assembly comprises rotor bearing, pull bar and rotor bearing casing; The rotor bearing casing is installed in the peripheral groove of rotor back iron; Pull bar adopts conductive coefficient nonmagnetic substance low and that structural strength is high to process; Rotor bearing is fixed in rotor coil assembly lower end through pull bar, is used for the support rotor coil block.
The periphery of said rotor back iron evenly is provided with 24 grooves, and promptly rotor-support-foundation system is provided with 12 pairs of utmost points.
Said copper cash winding differs 30 ° three phase windings by two electrical degrees and constitutes.
Said stator teeth groove adopts non-magnet material to process, and like the stainless steel material of low permeability, both can meet the demands aspect intensity and the magnetic property like chromium-austenitic 304; Said stator iron yoke adopts lamination; The rated voltage 3.5kV of said stator, rated current 840A, every extremely every number of phases is 1, concrete parameter sees the following form.
| Rated power P: | 10 MW |
| Efficiency eta | 97.2% |
| Rated |
11 rpm |
| Rated frequency f | 2.2 Hz |
| Power factor pf | 0.98 |
In order to guarantee that high-temperature superconducting magnet effectively moves; Produce enough magnetic field intensitys; Said generator also is provided with the refrigerating system that is used for the cooled rotor system, and it is terminal that this refrigerating system is positioned at the superconduction wind-driven generator, comprises compressor, rotary dynamic seal assembly, high-pressure helium transfer tube, the cold head of refrigeration machine, cryopump; Compressor is connected with the rotary dynamic seal assembly through pipeline; The rotary dynamic seal assembly connects the high-pressure helium transfer tube, and the high-pressure helium transfer tube connects the cold head of cold-producing medium, and cold head is fixed in the Dewar that is used to install the rotor coil assembly; The high-pressure helium transfer tube is communicated with through the refrigerant runner of the interior magnet skeleton of cold head and Dewar, also is provided with cryopump on the Dewar simultaneously; When compressor provides cold helium; Cold helium gets into the refrigerant runner through rotary dynamic seal assembly, high-pressure helium transfer tube, cold head high temperature superconductor coil is cooled off; The higher helium of temperature behind the cooling high-temperature superconducting coil is transferred to cold head again, is cooled off again by the higher helium of temperature of cold head after with the cooling high-temperature superconducting coil; Under the driving of cryopump, the helium that is cooled off again by cold head cools off high temperature superconductor coil once more then, realizes the work of cooling closed loop; The refrigerant that said helium adopts is the helium of 20-30K.
Said Dewar is double-deck Dewar, and the Dewar outer wall is fixed on the rotor bearing casing, and the Dewar inwall is fixed on the rotor bearing, can avoid Dewar in the rotary course of blower fan, because of bearing moment of torsion modification to take place like this.
The beneficial effect of the utility model is following:
(1) the utility model single-machine capacity is big, and volume is little, in light weight, and power density is high;
(2) rotor coil of the utility model rotor-support-foundation system adopts high temperature superconducting materia, does not have the resistance heating loss, and electric efficiency is high, and generator efficiency is brought up to more than 97%;
(3) the utility model good stability, and sound construction, compressive resistance is strong.
Description of drawings
Fig. 1 is the axial section structural representation of the utility model
Fig. 2 is the cross-sectional view of the utility model along A-A direction among Fig. 1
Fig. 3 is the structural representation of the utility model rotor coil
Wherein Reference numeral is: 1-wind wheel, 2-rotor back iron, 3-rotor bearing casing, 4-Dewar outer wall, 5-Dewar inwall, 6-heat insulation layer; The 7-electro-magnetic screen layer, 8-stator winding assembly, 9-stator iron yoke, 10-rotor coil assembly, 11-rotor bearing, 12-pull bar; The 13-cryopump, 14-cold head, 15-high-pressure helium transfer tube, 16-rotary dynamic seal assembly, 17-compressor; 18-magnet skeleton, 19-skeleton shrinkage joint, 20-coil fastener, 21-high temperature superconductor coil, 22-current feed interface.
Embodiment
Shown in Fig. 1-3, naval counterpart superconduction wind-driven generator comprises stator system and rotor-support-foundation system, and rotor-support-foundation system is positioned at the central shaft position of stator system, and rotor-support-foundation system is around motor center axle rotation work, and central shaft connects wind wheel 1; Said stator system comprises stator winding assembly 8 and the stator iron yoke 9 that is fixed in stator winding assembly 8 outsides, and stator winding assembly 8 comprises copper cash winding, stator teeth groove and coiling slot wedge, and the copper cash winding passes through the winding slot forelock in the stator teeth groove; Said rotor-support-foundation system comprises rotor coil assembly 10, rotor bearing assembly, rotor back iron 2; Rotor coil assembly 10 is fixed on the rotor supports assembly; The rotor supports assembly is fixed on the rotor back iron 2, and said rotor coil assembly 10 comprises magnet skeleton 18, high temperature superconductor coil 21 and coil fastener 20; Said magnet skeleton 18 is the runway shape ringwise; Hollow space is the refrigerant runner; The side that is positioned at magnet skeleton 18 is provided with annular groove, twines double-deck high temperature superconductor coil 21 through groove, and high temperature superconductor coil 21 outer setting have the coil fastener 20 that prevents that high temperature superconductor coil 21 from outwards unclamping; An end of coil fastener 20 is provided with current feed interface 22 simultaneously, so that pass high-temperature superconductive lead wire.
Said magnet skeleton 18 also is provided with that being used to prevents to expand with heat and contract with cold and makes the impaired skeleton shrinkage joint 19 of magnet skeleton 18 distortion perpendicular to the circumferential direction of skeleton, and no matter how magnet skeleton 18 expands and shrink, can operate as normal, and useful life is longer.
Said magnet skeleton 18 adopts and is processed by brass; Said high temperature superconductor coil 21 adopts yttrium barium copper oxide high temperature superconducting materia (YBCO)
.
In order to reduce the heat load that high-temperature superconducting magnet bears, the outside of said high temperature superconductor coil 21 is a high vacuum environment, in the outer setting of high temperature superconductor coil 21 several layers heat insulation layer 6 is arranged.
Said rotor bearing assembly comprises rotor bearing 11, pull bar 12 and rotor bearing casing 3; Rotor bearing casing 3 is installed in the groove of rotor back iron 2 peripheries; Pull bar 12 adopts conductive coefficient nonmagnetic substance low and that structural strength is high to process; Rotor bearing 11 is fixed in rotor coil assembly 10 lower ends through pull bar 12, is used for support rotor coil block 10.
The periphery of said rotor back iron 2 evenly is provided with 24 grooves, and promptly rotor-support-foundation system is provided with 12 pairs of utmost points.
Said copper cash winding differs 30 ° three phase windings by two electrical degrees and constitutes.
Said stator teeth groove adopts non-magnet material to process, and like the stainless steel material of low permeability, both can meet the demands aspect intensity and the magnetic property like chromium-austenitic 304; Said stator iron yoke 9 adopts lamination; The rated voltage 3.5kV of said stator, rated current 840A, every extremely every number of phases is 1.
In order to guarantee that high-temperature superconducting magnet effectively moves; Produce enough magnetic field intensitys; Said generator also is provided with the refrigerating system that is used for the cooled rotor system, and it is terminal that this refrigerating system is positioned at the superconduction wind-driven generator, comprises cold head 14, the cryopump 13 of compressor 17, rotary dynamic seal assembly 16, high-pressure helium transfer tube 15, refrigeration machine; Compressor 17 is connected with rotary dynamic seal assembly 16 through pipeline; Rotary dynamic seal assembly 16 connects high-pressure helium transfer tube 15, and high-pressure helium transfer tube 15 connects the cold head 14 of cold-producing medium, and cold head 14 is fixed in the Dewar that is used to install rotor coil assembly 10; High-pressure helium transfer tube 15 is communicated with through the refrigerant runner of the interior magnet skeleton 18 of cold head 14 and Dewar, also is provided with cryopump 13 on the Dewar simultaneously; When compressor 17 provides cold helium; Cold helium gets into the refrigerant runner through rotary dynamic seal assembly 16, high-pressure helium transfer tube 15, cold head 14 high temperature superconductor coil 21 is cooled off; The higher helium of temperature behind the cooling high-temperature superconducting coil 21 is transferred to cold head 14 again, is cooled off again by the higher helium of temperature of cold head 14 after with cooling high-temperature superconducting coil 21; Under the driving of cryopump 13, the helium that is cooled off again by cold head 14 cools off high temperature superconductor coil 21 once more then, realizes the work of cooling closed loop; The refrigerant that said helium adopts is the helium of 20-30K.
Said Dewar is double-deck Dewar, and Dewar outer wall 4 is fixed on the rotor bearing casing 3, and Dewar inwall 5 is fixed on the rotor bearing 11, can avoid Dewar in the rotary course of blower fan, because of bearing moment of torsion modification to take place like this.
Be provided with electro-magnetic screen layer 7 between said stator winding assembly 8 and the Dewar outer wall 4.
Claims (10)
1. naval counterpart superconduction wind-driven generator comprises stator system and rotor-support-foundation system, and rotor-support-foundation system is positioned at the central shaft position of stator system, and rotor-support-foundation system is around motor center axle rotation work, and central shaft connects wind wheel; Said stator system comprises the stator iron yoke that stator winding assembly is outside with being fixed in stator winding assembly, and stator winding assembly comprises copper cash winding, stator teeth groove and coiling slot wedge, and the copper cash winding passes through the winding slot forelock in the stator teeth groove; Said rotor-support-foundation system comprises rotor coil assembly, rotor bearing assembly, rotor back iron; The rotor coil assembly is fixed on the rotor supports assembly; The rotor supports assembly is fixed on the rotor back iron, it is characterized in that: said rotor coil assembly comprises magnet skeleton, high temperature superconductor coil and coil fastener; Said magnet skeleton is the runway shape ringwise; Hollow space is the refrigerant runner; The side that is positioned at the magnet skeleton is provided with annular groove, twines double-deck high temperature superconductor coil through groove, and the high temperature superconductor coil outer setting has the coil fastener that prevents that high temperature superconductor coil from outwards unclamping; An end of coil fastener is provided with the current feed interface simultaneously, so that pass high-temperature superconductive lead wire.
2. naval counterpart superconduction wind-driven generator according to claim 1 is characterized in that: said magnet skeleton is provided with perpendicular to the circumferential direction of skeleton also that being used to prevents to expand with heat and contract with cold makes the impaired skeleton shrinkage joint of magnet framework deformation.
3. naval counterpart superconduction wind-driven generator according to claim 1 and 2 is characterized in that: said magnet skeleton adopts and is processed by brass; Said high temperature superconductor coil adopts the yttrium barium copper oxide high temperature superconducting materia.
4. naval counterpart superconduction wind-driven generator according to claim 3 is characterized in that: the outside of said high temperature superconductor coil is a high vacuum environment, in the outer setting of high temperature superconductor coil the several layers heat insulation layer is arranged.
5. naval counterpart superconduction wind-driven generator according to claim 4; It is characterized in that: said rotor bearing assembly comprises rotor bearing, pull bar and rotor bearing casing; The rotor bearing casing is installed in the peripheral groove of rotor back iron; Pull bar adopts conductive coefficient nonmagnetic substance low and that structural strength is high to process, and rotor bearing is fixed in rotor coil assembly lower end through pull bar, is used for the support rotor coil block.
6. naval counterpart superconduction wind-driven generator according to claim 5 is characterized in that: the periphery of said rotor back iron evenly is provided with 24 grooves, and promptly rotor-support-foundation system is provided with 12 pairs of utmost points.
7. according to claim 1 or 6 described naval counterpart superconduction wind-driven generators, it is characterized in that: said copper cash winding differs 30 ° three phase windings by two electrical degrees and constitutes.
8. naval counterpart superconduction wind-driven generator according to claim 7 is characterized in that: said stator teeth groove adopts non-magnet material to process; Said stator iron yoke adopts lamination; The rated voltage 3.5kV of said stator, rated current 840A, every extremely every number of phases is 1.
9. according to claim 1 or 8 described naval counterpart superconduction wind-driven generators; It is characterized in that: said generator also is provided with the refrigerating system that is used for the cooled rotor system; It is terminal that this refrigerating system is positioned at the superconduction wind-driven generator; Comprise compressor, rotary dynamic seal assembly, high-pressure helium transfer tube, the cold head of refrigeration machine, cryopump, compressor is connected with the rotary dynamic seal assembly through pipeline, and the rotary dynamic seal assembly connects the high-pressure helium transfer tube; The high-pressure helium transfer tube connects the cold head of cold-producing medium; Cold head is fixed in the Dewar that is used to install the rotor coil assembly, and the high-pressure helium transfer tube is communicated with through the refrigerant runner of the interior magnet skeleton of cold head and Dewar, also is provided with cryopump on the Dewar simultaneously; When compressor provides cold helium; Cold helium gets into the refrigerant runner through rotary dynamic seal assembly, high-pressure helium transfer tube, cold head high temperature superconductor coil is cooled off; The higher helium of temperature behind the cooling high-temperature superconducting coil is transferred to cold head again, is cooled off again by the higher helium of temperature of cold head after with the cooling high-temperature superconducting coil; Under the driving of cryopump, the helium that is cooled off again by cold head cools off high temperature superconductor coil once more then, realizes the work of cooling closed loop; The refrigerant that said helium adopts is the helium of 20-30K.
10. naval counterpart superconduction wind-driven generator according to claim 9 is characterized in that: said Dewar is double-deck Dewar, and the Dewar outer wall is fixed on the rotor bearing casing, and the Dewar inwall is fixed on the rotor bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204972108U CN202334039U (en) | 2011-12-05 | 2011-12-05 | Offshore type superconductive wind driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204972108U CN202334039U (en) | 2011-12-05 | 2011-12-05 | Offshore type superconductive wind driven generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202334039U true CN202334039U (en) | 2012-07-11 |
Family
ID=46446005
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204972108U Expired - Lifetime CN202334039U (en) | 2011-12-05 | 2011-12-05 | Offshore type superconductive wind driven generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202334039U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412640A (en) * | 2011-12-05 | 2012-04-11 | 中国东方电气集团有限公司 | Offshore type superconducting wind power generator |
| CN106972734A (en) * | 2017-05-25 | 2017-07-21 | 华北电力大学 | A kind of superconducting motor of use track type superconductive pellet stacked coils |
-
2011
- 2011-12-05 CN CN2011204972108U patent/CN202334039U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412640A (en) * | 2011-12-05 | 2012-04-11 | 中国东方电气集团有限公司 | Offshore type superconducting wind power generator |
| CN102412640B (en) * | 2011-12-05 | 2014-04-02 | 中国东方电气集团有限公司 | Offshore type superconducting wind power generator |
| CN106972734A (en) * | 2017-05-25 | 2017-07-21 | 华北电力大学 | A kind of superconducting motor of use track type superconductive pellet stacked coils |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120711 Effective date of abandoning: 20140402 |
|
| RGAV | Abandon patent right to avoid regrant |