CN102496952A - Novel wind generating set structure - Google Patents
Novel wind generating set structure Download PDFInfo
- Publication number
- CN102496952A CN102496952A CN2011103775164A CN201110377516A CN102496952A CN 102496952 A CN102496952 A CN 102496952A CN 2011103775164 A CN2011103775164 A CN 2011103775164A CN 201110377516 A CN201110377516 A CN 201110377516A CN 102496952 A CN102496952 A CN 102496952A
- Authority
- CN
- China
- Prior art keywords
- generator
- current transformer
- gear box
- brushless
- electrical network
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
Abstract
The invention discloses a wind generating set structure which is small in volume and maintenance-free and has good low-voltage ride-through capability. The wind generating set structure comprises a blade, a generator, a gear box and a current transformer, wherein a blade rotating shaft is connected with a main shaft of the gear box; the main shaft of the gear box is connected with a rotor of the generator; the current transformer is connected between the generator and an electric network through a cable; the generator is a brushless cage-type asynchronous generator; the current transformer is a full-power current transformer, and a motor side current transformer of the full-power current transformer is connected with a stator winding of the brushless cage-type synchronous generator; and an electric network side current transformer is connected with the electric network.
Description
Technical field:
The invention belongs to field of generating equipment, refer in particular to a kind of novel wind generator group structure.
Background technology:
The energy has become the bottleneck of restriction various countries energy development, and from the energy development strategy, the mankind must seek the energy road of a sustainable development, and the purpose of sustainable energy development is development, and key is a sustainability.And along with expanding economy, growth in the living standard, the People more and more attention is survived, the improvement of living environment, and environmental protection consciousness constantly strengthens, and presses for some cleanings, pollution-free, reproducible new forms of energy.In present numerous regenerative resources and new energy technology development, development is the most ripe, on the largest scale melt clockwork spring spare and commercialized development prospect, the most competitive, the most with the largest potentiality be exactly wind power generation.
Wind generator system when work most important must guarantee to be converted into and the electrical power of electrical network same frequency with voltage with the variable-frequency variable-voltage electrical power that wind speed, wind direction change, and under the instantaneous situation about dropping of line voltage, keeps and being connected of electrical network.
For a long time, the domestic wind turbine generator of China adopts double-fed asynchronous generator+current transformer or these two kinds of traditional approachs of magneto alternator+full power convertor always, and these two kinds of traditional approachs all exist weak point.
Double-fed asynchronous generator as shown in Figure 1+current transformer mode, its blade a1 rotation passes to gear box a2 with mechanical kinetic energy through main shaft, and gear box a2 drags double-fed asynchronous generator a3, and double-fed asynchronous generator a3 connects, and absorbs perhaps to send electrical power; Because therefore double-fed asynchronous generator a3 group will need slip ring and carbon brush structure to rotor-exciting, this has increased the maintenance point of unit undoubtedly; Aspect low-voltage passed through, because the capacity of the current transformer a4 of double-fed asynchronous generator group is merely the sub-fraction of generator capacity, therefore the low voltage ride-through capability under the instantaneous situation that drops of electrical network a5 voltage was very limited in addition.Therefore the operational reliability of this kind wind turbine generator is poor, need often to safeguard, and or not to be well suited in the more abominable wind generator system of environment to move.
Magneto alternator as shown in Figure 2+full power convertor mode, adopt multipole low-speed permanent-magnet synchronous generator b1 directly and main shaft join, utilize full power convertor b2 to electrical network b3 feed.Though this scheme has been saved gear box, the generator volume is heavy very, and cost is very high.
Summary of the invention:
The objective of the invention is in order to overcome the shortcoming of above-mentioned prior art, the wind generating set structure that a kind of volume is little, non-maintaining, have good low voltage ride-through capability is provided.
For realizing above-mentioned purpose; Technical scheme provided by the invention is: a kind of novel wind generator group structure, include blade, generator, gear box and current transformer, and blade rotor is connected with the gear box main shaft; The gear box main shaft is connected with generator amature; Current transformer is connected between generator and the electrical network through cable, and described generator is brushless cage type asynchronous generator, and current transformer is a full power convertor; The motor side current transformer of full power convertor is connected with the stator winding of brushless cage type asynchronous generator, and the grid side current transformer is connected with electrical network.
Compared with prior art, the present invention has following beneficial effect:
(1) the cage type asynchronous electric generator structure of this wind turbine generator employing is simple, has saved slip ring and carbon brush structure, and volume is little and non-maintaining;
(2) this wind turbine generator adopts the AC-DC-AC full power convertor to be connected with cage type asynchronous generator unit stator winding; Through realizing variable speed constant frequency to generator excitation; Can also regulate power factor; Can realize to be converted into the electrical power of electrical network same frequency with the variable-frequency variable-voltage electrical power that wind speed, wind direction change, therefore be fit to very much be applied in the variable-speed constant-frequency wind power generation system with voltage;
(3) simultaneously the cage type asynchronous generator of this wind turbine generator is received on the electrical network through the AC-DC-AC full power convertor, can reduce harmonic pollution in electric power net, and can obtain corresponding perception or capacitive reactive power is exported flexibly according to the electrical network demand, and this is highly beneficial to electrical network; When line voltage dropped, current transformer continued to be connected with electrical network in addition, continued to give cage type asynchronous generator that torque is provided; Prevent the unit driving; Send idlely to electrical network, support line voltage, prevent that line voltage from further falling and cause mains breakdown; The realization low-voltage is passed through, and has good grid adaptability.
Description of drawings:
Fig. 1 is the structural representation of the wind turbine generator of existing double-fed asynchronous generator+current transformer mode;
Fig. 2 is the structural representation of the wind turbine generator of existing magneto alternator+full power convertor mode;
Fig. 3 is the structural representation of wind turbine generator of the present invention.
Embodiment:
Combine accompanying drawing to set forth the present invention in detail at present:
This wind generating set structure is as shown in Figure 3, and it has comprised blade 1, gear box 2, brushless cage type asynchronous generator 3 (IG/SG) and AC-DC-AC full power convertor 4; Blade 1 rotating shaft and gear box 2 main shafts are refuted and are connect; Gear box 2 connects brushless cage type asynchronous generator, and drives this brushless cage type asynchronous generator 3 rotations; The stator winding of brushless cage type asynchronous generator 3 connects AC-DC-AC full power convertor 4.During use, the brushless cage type asynchronous generator 3 of this wind turbine generator is received on the electrical network 5 through AC-DC-AC full power convertor 4.
During work; Blade 1 facings the wind and rotates, and driven gear case 2 rotates, and gear box 2 is through the rotor rotation of the brushless cage type asynchronous generator 3 of speed change rear drive; With respect to stator winding; Will obtain alternating magnetic fields from rotor, make stator winding produce alternating current, the alternating current that this voltage, current amplitude and frequency all change changes direct current into through the motor side current transformer 41 of full power convertor 4 earlier; And then through net side converter 42 this direct current is transformed into and satisfies the alternating current be incorporated into the power networks and require, and feed-in electrical network.
In the process of generating; Can realize variable speed constant frequency through giving brushless cage type asynchronous generator 3 excitations; Can also regulate power factor, can realize to be converted into the electrical power of electrical network same frequency with the variable-frequency variable-voltage electrical power that wind speed, wind direction change with voltage.
The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction.Any those of ordinary skill in the art; Do not breaking away under the technical scheme scope situation of the present invention; All the method for above-mentioned announcement capable of using and technology contents are made many possible changes and modification to technical scheme of the present invention, or are revised as the equivalent embodiment of equivalent variations.So every content that does not break away from technical scheme of the present invention, the equivalence of doing according to the present invention's shape, structure and principle changes, and all should be covered by in protection scope of the present invention.
Claims (1)
1. a novel wind generator group structure includes blade, generator, gear box and current transformer, and blade rotor is connected with the gear box main shaft; The gear box main shaft is connected with generator amature; Current transformer is connected between generator and the electrical network through cable, it is characterized in that: described generator is brushless asynchronous generator, and current transformer is a full power convertor; The motor side current transformer of full power convertor is connected with the stator winding of brushless asynchronous generator, and the grid side current transformer is connected with electrical network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103775164A CN102496952A (en) | 2011-11-23 | 2011-11-23 | Novel wind generating set structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103775164A CN102496952A (en) | 2011-11-23 | 2011-11-23 | Novel wind generating set structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102496952A true CN102496952A (en) | 2012-06-13 |
Family
ID=46188751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103775164A Pending CN102496952A (en) | 2011-11-23 | 2011-11-23 | Novel wind generating set structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102496952A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108306323A (en) * | 2017-12-29 | 2018-07-20 | 太原重工股份有限公司 | Distributed Wind turbines energy-storage system and its energy storage implementation method for wind power plant |
| CN110017250A (en) * | 2019-03-29 | 2019-07-16 | 华中科技大学 | A kind of variable-speed constant-frequency wind power generation system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201197079Y (en) * | 2008-02-03 | 2009-02-18 | 北京能高自动化技术有限公司 | Variable-speed constant-frequency wind generator set based on cage type induction machine |
| CN201521402U (en) * | 2009-04-08 | 2010-07-07 | 刘威廉 | Squirrel-cage vertical-axis wind generating set |
| CN201584856U (en) * | 2009-12-22 | 2010-09-15 | 西安久和能源科技有限公司 | Cage-type asynchronous wind power generator unit |
| CN201802563U (en) * | 2010-09-30 | 2011-04-20 | 华锐风电科技(集团)股份有限公司 | Full-power squirrel-cage set wind power generation apparatus |
| CN202326023U (en) * | 2011-11-23 | 2012-07-11 | 广东东兴风盈风电设备制造有限公司 | Novel wind generating set structure |
-
2011
- 2011-11-23 CN CN2011103775164A patent/CN102496952A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201197079Y (en) * | 2008-02-03 | 2009-02-18 | 北京能高自动化技术有限公司 | Variable-speed constant-frequency wind generator set based on cage type induction machine |
| CN201521402U (en) * | 2009-04-08 | 2010-07-07 | 刘威廉 | Squirrel-cage vertical-axis wind generating set |
| CN201584856U (en) * | 2009-12-22 | 2010-09-15 | 西安久和能源科技有限公司 | Cage-type asynchronous wind power generator unit |
| CN201802563U (en) * | 2010-09-30 | 2011-04-20 | 华锐风电科技(集团)股份有限公司 | Full-power squirrel-cage set wind power generation apparatus |
| CN202326023U (en) * | 2011-11-23 | 2012-07-11 | 广东东兴风盈风电设备制造有限公司 | Novel wind generating set structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108306323A (en) * | 2017-12-29 | 2018-07-20 | 太原重工股份有限公司 | Distributed Wind turbines energy-storage system and its energy storage implementation method for wind power plant |
| CN110017250A (en) * | 2019-03-29 | 2019-07-16 | 华中科技大学 | A kind of variable-speed constant-frequency wind power generation system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104201848B (en) | A kind of double-stator permanent magnet vernier wind-driven generator | |
| CN104600930B (en) | Permanent magnet excitation brushless dual-feedback wind power generator | |
| CN101242157A (en) | A cascaded speed shift frequency constant wind power generation system | |
| CN201226504Y (en) | Variable-speed constant-frequency wind power generation system based on dual rotors generator | |
| CN102710200B (en) | Directly-drive wind power generation system composed of high temperature superconductive excitation magnetic flux switchover motor | |
| CN201786562U (en) | Dual-stator direct drive permanent magnet wind-driven generator | |
| CN103184979A (en) | Power generation assembly combining electric motor and wind driven generator and application method thereof | |
| CN101017998A (en) | Directly driving mixed excitation dual stator wind power dynamotor | |
| CN202524258U (en) | Variable power input constant frequency power generation system using birotor motor | |
| CN104158377B (en) | A kind of stormy waves switch reluctance generator system being applied to offshore platform | |
| CN202326023U (en) | Novel wind generating set structure | |
| CN102797637A (en) | Wind-driven generator with micro-power consumption | |
| CN102496952A (en) | Novel wind generating set structure | |
| CN202676881U (en) | Test system based on double rotor motor variable-speed constant-frequency wind power generation | |
| CN201903629U (en) | Alternating current transformation-type excitation synchronous wind power generation experimental facility | |
| CN206458567U (en) | A kind of dual drive wind power generation plant | |
| CN102710083B (en) | Hybrid-excited brushless DC wind power generator | |
| CN112003437B (en) | Composite structure wind driven generator and power generation system | |
| CN205779476U (en) | A kind of double-fed wind generating device | |
| CN104153943A (en) | Wind power system based on coaxial hybrid generators | |
| CN204089213U (en) | Wide speed range directly-driving wind power generation system | |
| CN203119499U (en) | A full-power wind-driven electrical power generating system containing coaxial mixed generators | |
| CN201910722U (en) | Direct drive motor for sand making machine | |
| CN102882335B (en) | Axial magnetic flux permanent magnet induction wind-driven generator | |
| CN201953572U (en) | Direct-driven switched reluctance wind power generator system with concentric two-stator structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120613 |