CN202513589U - High-voltage high-power directly-driven offshore wind generator set based on superconducting motor - Google Patents
High-voltage high-power directly-driven offshore wind generator set based on superconducting motor Download PDFInfo
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- CN202513589U CN202513589U CN2012201379384U CN201220137938U CN202513589U CN 202513589 U CN202513589 U CN 202513589U CN 2012201379384 U CN2012201379384 U CN 2012201379384U CN 201220137938 U CN201220137938 U CN 201220137938U CN 202513589 U CN202513589 U CN 202513589U
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- generator
- current transformer
- side current
- offshore wind
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/30—Wind power
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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
- Y02E10/76—Power conversion electric or electronic aspects
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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 utility model relates to a high-voltage high-power directly-driven offshore wind generator set based on a superconducting motor. The wind generator set comprises a windmill, a main shaft, a low-speed high-temperature superconducting generator, a generator side current transformer, a power grid side current transformer and a master controller, wherein the main shaft is connected with the windmill and the generator; a direct-current capacitor is connected between the generator side current transformer and the power grid side current transformer; and the master controller is in communication connection with the generator side current transformer and the power grid side current transformer. Due to the adoption of the high-voltage high-power directly-driven offshore wind generator set based on the superconducting motor, a gearbox can be eliminated, the failure rate, the weight of the entire generator set and the wind farm building cost are lowered, and the defects of the conventional offshore wind generator set are overcome.
Description
Technical field
The utility model relates to wind power generation field, particularly relates to a kind of direct driving offshore wind generating group of high-power of based superconductive motor.
Background technology
Offshore wind farm has aboundresources, generating and utilizes hour high, the characteristics of land occupation and suitable large-scale development not, is the up-to-date forward position of global wind-powered electricity generation development." 12 " ENERGY PLANNING and regenerative resource according to China is formulating are planned; 2015; China will build up 5,000,000 kilowatts of offshore wind farms, form the complete set technology of offshore wind farm and will set up complete industrial chain, after 2015; China's offshore wind farm will get into the large-scale development stage, reach the international advanced technology level.The year two thousand twenty China offshore wind farm will reach 3,000 ten thousand kilowatts.Therefore, offshore wind farm is the development trend in following wind-powered electricity generation field.
Oversea wind power generation adopts the high-power wind turbine unit more favourable.But there is following problem in the wind turbine generator of using now: at first, after generator power became greatly, weight can be very big; Secondly, will adopt the gear box speed change between generator and the wind energy conversion system, gear box breaks down easily, and reliability is low, often needs repairing; In addition, existing wind-powered electricity generation unit will could connect with the 10kV electrical network through step-up transformer, also need build special transformer platform at sea, has increased the equipment and the installation difficulty of wind-powered electricity generation unit.Particularly; The high-power wind-driven generator group that marine wind electric field uses; Environment, salt fog, microbiologic(al) corrosion etc. give marine wind electric field very large overweight generating set maintenance to the erosion of generating equipment through moisture, have brought great difficulty and huge financial burden.
This shows that above-mentioned existing offshore wind generating group obviously still has inconvenience and defective, and demands urgently further improving in structure and use.How to found a kind of gear box that saves, the direct driving offshore wind generating group of high-power of the weight of reduction failure rate, complete machine and the new based superconductive motor of wind energy turbine set construction cost, the current industry utmost point of real genus needs improved target.
The utility model content
The technical problem that the utility model will solve provides a kind of direct driving offshore wind generating group of high-power of based superconductive motor; Make it can save gear box; Reduce the weight and the wind energy turbine set construction cost of failure rate, complete machine, thereby overcome the deficiency of existing offshore wind generating group.
For solving the problems of the technologies described above; The direct driving offshore wind generating group of the high-power of a kind of based superconductive motor of the utility model; Comprise wind energy conversion system, main shaft, low speed high-temperature superconducting generator, generator side converter, grid side current transformer and master controller, wherein: main shaft connects wind energy conversion system and generator; Be connected with dc capacitor between generator side converter and the grid side current transformer; Master controller is connected with generator side converter, the communication of grid side current transformer.
As a kind of improvement of the utility model, described generator side converter and grid side current transformer adopt four level topological structures.
Described generator side converter and grid side current transformer include the brachium pontis of three parallel connections; Each brachium pontis is formed by the IGBT module of six end to end series connection; Each IGBT module is composed in parallel by an IGBT and a backward diode; The collector electrode of the IGBT of the top in every group of brachium pontis is connected with the anode of said dc capacitor; Bottom the emitter of IGBT is connected with the negative terminal of said dc capacitor in every group of brachium pontis; Every group of brachium pontis topmost IGBT emitter and be connected with capacitor between the collector electrode of IGBT bottom; Be connected with capacitor between the emitter of second IGBT in every group of brachium pontis upper end and the collector electrode of second IGBT in lower end.
Also be provided with filter between the brachium pontis of described grid side current transformer and the electrical network.
Also be provided with the du/dt filter between the brachium pontis of described generator side converter and the generator.
The rated voltage of described generator unit stator, grid side current transformer and generator side converter is 10kV.
After adopting such design, the advantage of the utility model is:
1, can save the required gear box of common wind-powered electricity generation unit, the driving-chain of simplified system has reduced failure rate, has improved the reliability of equipment;
2, current transformer adopts four level topological structures; Improved the current transformer electric pressure; Can directly be attempted by the 10kV electrical network, the power output of motor side current transformer scalable generator, the grid side current transformer can satisfy the requirements of being incorporated into the power networks such as dc voltage stability, current sinusoidal property is good, power factor is adjustable; Save the step-up transformer and the transformer offshore platform of wind energy turbine set, saved the wind energy turbine set construction cost;
3, generator adopts high-temperature superconducting motor, has improved the blower fan generating efficiency, can reduce the weight and the energy loss of wind-powered electricity generation unit greatly, helps transportation and marine the installation, has reduced the offshore platform construction cost of wind-powered electricity generation unit;
4, the utility model all devices is all considered requirements such as anti-seawater corrosion, anti-salt fog, is particularly suitable at sea wind power generation field and applies.
Description of drawings
Above-mentioned only is the general introduction of the utility model technical scheme, in order more to know the technological means of understanding the utility model, below in conjunction with accompanying drawing and embodiment the utility model is done further to specify.
Fig. 1 is the composition sketch map of the direct driving offshore wind generating group of high-power of the utility model based superconductive motor.
Fig. 2 is the high-power converter topologies sketch map of the direct driving offshore wind generating group of high-power of the utility model based superconductive motor.
Embodiment
See also shown in Figure 1; The direct driving offshore wind generating group of the high-power of the utility model based superconductive motor comprises wind energy conversion system 1, main shaft 2, low speed high-temperature superconducting generator 3, generator side converter 5, grid side current transformer 7 and master controller 10.
Wherein, main shaft 2 connects wind energy conversion systems 1 and generators 3, is connected with dc capacitor 6 between generator side converter 5 and the grid side current transformer 7, and master controller 10 and generator side converter 5, grid side current transformer 7 are connected through communication line.
Wind energy conversion system 1 adopts three conventional blade constructions, is to be the device of mechanical energy with wind energy transformation, and the size of blade can design according to the watt level of wind-powered electricity generation unit.What generator 3 adopted is that high-temperature superconductor exchanges the low speed synchronous generator; Magnet is placed on the rotor rotated; Major loop winding with the copper cash coiling is placed on the static stator, and the stator and rotor number of poles is more, and concrete stator and rotor progression need design according to the power of generator.The wind energy that main shaft 2 is caught wind energy conversion system 1 is delivered on the rotor of generator 3, drives generator 3 rotations, converts mechanical energy into power delivery to current transformer, and the electric energy that current transformer sends generator is transformed to through the AC-DC-AC link and satisfies the electric energy that electrical network requires.
Current transformer is connected between generator 3 and the electrical network 9, adopts four level back to back structure, and generator 3 sides are called motor side current transformer 5, and what be connected electrical network 9 sides is called grid side current transformer 7.Master controller 10 can obtain the fan condition amount, and is responsible for issuing control command to current transformer, and power control, the pitch angle of accomplishing wind turbine generator regulated, is incorporated into the power networks and protection etc.
Preferable, please cooperate and consult shown in Figure 2ly, the generator side converter 5 of the utility model is identical with the structure of grid side current transformer Unit 7, includes the brachium pontis of three parallel connections; Each brachium pontis is formed by the IGBT module of six end to end series connection; Each IGBT module is composed in parallel by an IGBT and a backward diode; The IGBT11,21 of the top in every group of brachium pontis, 31 collector electrode are connected with the anode of said dc capacitor 6; Bottom IGBT16,26,36 emitter is connected with the negative terminal of said dc capacitor 6 in every group of brachium pontis; Every group of brachium pontis be IGBT11,21,31 emitter and be connected with capacitor 18,28,38 between IGBT16,26,36 the collector electrode bottom topmost; Be connected with capacitor 17,27,37 between second IGBT12 in every group of brachium pontis upper end, 22,32 emitter and second IGBT15 in lower end, 25,35 the collector electrode.
In addition, motor side current transformer 5 also is connected with du/dt filter 4, and the reactor in the du/dt filter 4 is connected between the brachium pontis of generator 3 and motor side current transformer 5, and capacitor is connected in parallel between reactor and the generator 3.Grid side current transformer 7 also is connected with LCL filter 8, and filter one end links to each other with electrical network 9, and an end is connected with the brachium pontis of grid side current transformer 7.
The utility model is applicable to the 10kV regional power grid, and the stator of its generator 3, grid side current transformer 5 all are designed to 10kV with the rated voltage of generator side converter 7.
What should explain at last is: the above is merely the preferred embodiment of the utility model; Be not limited to the utility model; Although the utility model has been carried out detailed explanation with reference to previous embodiment; For a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the utility model.
Claims (6)
1. the direct driving offshore wind generating group of the high-power of a based superconductive motor is characterized in that comprising wind energy conversion system, main shaft, low speed high-temperature superconducting generator, generator side converter, grid side current transformer and master controller, wherein:
Main shaft connects wind energy conversion system and generator;
Be connected with dc capacitor between generator side converter and the grid side current transformer;
Master controller is connected with generator side converter, the communication of grid side current transformer.
2. the direct driving offshore wind generating group of the high-power of based superconductive motor according to claim 1 is characterized in that described generator side converter and grid side current transformer adopt four level topological structures.
3. the direct driving offshore wind generating group of the high-power of based superconductive motor according to claim 1 is characterized in that:
Described generator side converter and grid side current transformer include the brachium pontis of three parallel connections;
Each brachium pontis is formed by the IGBT module of six end to end series connection;
Each IGBT module is composed in parallel by an IGBT and a backward diode;
The collector electrode of the IGBT of the top in every group of brachium pontis is connected with the anode of said dc capacitor;
Bottom the emitter of IGBT is connected with the negative terminal of said dc capacitor in every group of brachium pontis;
Every group of brachium pontis topmost IGBT emitter and be connected with capacitor between the collector electrode of IGBT bottom;
Be connected with capacitor between the emitter of second IGBT in every group of brachium pontis upper end and the collector electrode of second IGBT in lower end.
4. the direct driving offshore wind generating group of the high-power of based superconductive motor according to claim 3 is characterized in that also being provided with filter between brachium pontis and the electrical network of described grid side current transformer.
5. the direct driving offshore wind generating group of the high-power of based superconductive motor according to claim 3 is characterized in that also being provided with the du/dt filter between brachium pontis and the generator of described generator side converter.
6. according to the direct driving offshore wind generating group of the high-power of each described based superconductive motor among the claim 1-5, it is characterized in that the rated voltage of described generator unit stator, grid side current transformer and generator side converter is 10kV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201379384U CN202513589U (en) | 2012-04-01 | 2012-04-01 | High-voltage high-power directly-driven offshore wind generator set based on superconducting motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201379384U CN202513589U (en) | 2012-04-01 | 2012-04-01 | High-voltage high-power directly-driven offshore wind generator set based on superconducting motor |
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| Publication Number | Publication Date |
|---|---|
| CN202513589U true CN202513589U (en) | 2012-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012201379384U Expired - Lifetime CN202513589U (en) | 2012-04-01 | 2012-04-01 | High-voltage high-power directly-driven offshore wind generator set based on superconducting motor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102593870A (en) * | 2012-04-01 | 2012-07-18 | 国电联合动力技术有限公司 | High-voltage high-power direct-drive offshore wind generating set based on superconducting motor |
| CN103825530A (en) * | 2014-03-07 | 2014-05-28 | 华中科技大学 | Superconducting motor system and application thereof |
| EP3772173A1 (en) * | 2019-08-01 | 2021-02-03 | General Electric Company | System and method for exciting low-impedance machines using a current source converter |
-
2012
- 2012-04-01 CN CN2012201379384U patent/CN202513589U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102593870A (en) * | 2012-04-01 | 2012-07-18 | 国电联合动力技术有限公司 | High-voltage high-power direct-drive offshore wind generating set based on superconducting motor |
| CN103825530A (en) * | 2014-03-07 | 2014-05-28 | 华中科技大学 | Superconducting motor system and application thereof |
| EP3772173A1 (en) * | 2019-08-01 | 2021-02-03 | General Electric Company | System and method for exciting low-impedance machines using a current source converter |
| US11128231B2 (en) | 2019-08-01 | 2021-09-21 | General Electric Company | System and method for exciting low-impedance machines using a current source converter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NATIONAL ELECTRIC NEW ENERGY TECHNOLOGY INSTITUTE Effective date: 20130703 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130703 Address after: 100000 Beijing City, Zhongguancun, South Street, building B, building No., level 56, level 16 Patentee after: Guodian United Power Technology Co., Ltd. Patentee after: Guodian New Energy Technology Institute Address before: 100000 Beijing City, Zhongguancun, South Street, building B, building No., level 56, level 16 Patentee before: Guodian United Power Technology Co., Ltd. |
|
| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: NATIONAL ELECTRIC NEW ENERGY TECHNOLOGY INSTITUTE Effective date: 20140808 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140808 Address after: 100000 Beijing City, Zhongguancun, South Street, building B, building No., level 56, level 16 Patentee after: Guodian United Power Technology Co., Ltd. Address before: 100000 Beijing City, Zhongguancun, South Street, building B, building No., level 56, level 16 Patentee before: Guodian United Power Technology Co., Ltd. Patentee before: Guodian New Energy Technology Institute |
|
| CX01 | Expiry of patent term |
Granted publication date: 20121031 |
|
| CX01 | Expiry of patent term |