CN102322404B - Direct driving type wind driven generator with double motors - Google Patents
Direct driving type wind driven generator with double motors Download PDFInfo
- Publication number
- CN102322404B CN102322404B CN201110143501.1A CN201110143501A CN102322404B CN 102322404 B CN102322404 B CN 102322404B CN 201110143501 A CN201110143501 A CN 201110143501A CN 102322404 B CN102322404 B CN 102322404B
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- 230000002093 peripheral effect Effects 0.000 claims description 12
- 230000005284 excitation Effects 0.000 description 6
- 238000004804 winding Methods 0.000 description 5
- 108010066057 cabin-1 Proteins 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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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
Landscapes
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a direct driving type wind driven generator with double motors, which comprises an engine room (1), an engine base (2), an impeller (11), a main shaft (12), double stators and double rotors, wherein the engine base (2) is connected with the engine room (1); for the double stators and the double rotors, an outer stator (3), an inner rotor (4), an outer rotor (5) and an inner stator (7) are sequentially arranged from outside to inside; one end of the main shaft (12) is fixedly connected with the engine base (2) which is close to one side of the engine room (1); the impeller (11) is connected with the other end of the main shaft (12) in a rotating manner; the generator also comprises a rotor supporting frame (5) which is fixedly connected with the impeller (11); the outer stator (3) is in interference fit with the engine base (2); and the inner stator (7) is in interference fit with the main shaft. After the structure is adopted, as the double motor structure is arranged in the radial direction, the internal space of the motors is fully used, the structure of the generator is not only simplified, but also the axial size of the generator is shortened.
Description
Technical field
The present invention relates to electrical generator fields, is specifically that one is applicable to powerful direct driving type wind driven generator with double motors.
Background technique
In the MW class power generator of prior art about 80% is adopt double-fed generator, and namely wind wheel drives wind turbine power generation by a multi-stage acceleration machine.In the process that wind-driven generator runs, the fault of booster engine is relatively high, generally about 70%.In recent years, for addressing this problem, be proposed the permanent magnet direct-drive wind-force generating machine not needing booster engine.But permanent magnet direct-drive wind-force generating machine, due to its motion speed low (being usually less than 20r/min), therefore its generator is bulky, and the diameter that the direct-drive aerogenerator as 2MW has has accomplished 5m.And China coast wind resource enriches, in order to make full use of the wind power equipment investment of Oversea wind resource and reduction unit K W, wish that wind-driven generator does more, as 5MW or larger.For such wind-driven generator, if make directly driving type, its diameter and axial length will have greatly increased, and weight also has significant increase, like this, transport and in-site installation can be made to become impossible.Therefore, at present the wind-driven generator of 3MW is often adopted to the non-direct drive scheme of booster engine.And as above-mentioned, booster engine is the device of a high rate of fault, and the booster engine that wind turbine equipment needs a long-term high reliability of energy to run.
Chinese patent website discloses the patent application that application number is 200710020545.9, it have employed a kind of Resultant field, the dual-motor structure that duplex bearing supports, namely it is by interior external stator, inner stator support, cup-shaped rotor, electric exciting winding and exciting winding support; Wherein, external stator is fixed in motor housing, inner stator is fixed on inner stator support, inner stator support is fixed on electric motor end cap, the different outer permanent magnet of polarity is staggered and is distributed in the outer wall of cup-shaped rotor, the different interior permanent magnet of polarity is staggered and is distributed in the inwall of cup-shaped rotor, and between inner stator and external stator, outer permanent magnet and interior permanent magnet are connected mutually, cup-shaped rotor is fixed in rotating shaft, electricity exciting winding is enclosed within electric exciting winding support, and electric exciting winding support is fixed on end cap.But there is following shortcoming in the Double-motor direct drive formula generator of this structure:
1) because this structure adopts duplex bearing to support, i.e. the two ends of rotating shaft are supported by the shell of motor, structure relative complex, and its axial dimension is larger;
2) the electric excitation in Resultant field, rotating shaft need adopt non-magnetic conductive steel, such as stainless steel, and stainless intensity is lower, expensive, as met desirable strength, certainly will increase the sectional dimension of rotating shaft, therefore, will increase considerably its manufacture cost;
3) in addition, for improving the utilization ratio of wind energy, adopt the method for electric excitation, but electric excitation wanting power consumption, therefore, the wind energy utilization of generator can be reduced; And an electric excitation only externally stator motor works, therefore, the output of the also just external stator of adjustment, and the output of inner stator can not be regulated, be therefore difficult to obtain optimal wind energy and utilize.
Summary of the invention
Technical problem to be solved by this invention is, provides a kind of and can utilize limited space fully, can make that generator power is larger, manufacture cost is lower when not increasing volume, also can improve the direct driving type wind driven generator with double motors of wind energy utilization simultaneously.
For solving the problems of the technologies described above, direct driving type wind driven generator with double motors provided by the invention, comprise cabin, support, impeller, main shaft, bimorph transducer and double rotor, one end of described support is connected with cabin, described bimorph transducer and double rotor are all positioned at support, and described bimorph transducer and double rotor putting in order from outside to inside is followed successively by external stator, internal rotor, external rotor and inner stator; One end of described main shaft is fixedly connected with the support near side, cabin, and the other end of impeller and main shaft is rotationally connected; This generator also comprises Rotor carriage, and described Rotor carriage is fixedly connected with impeller, and described internal rotor and the magnetic pole of external rotor are installed on Rotor carriage; Described external stator and support close-fitting, described inner stator and main shaft close-fitting.Described main shaft comprises the outer ring and inner ring that one end is connected as a single entity, and described outer ring is the tubular of great circle cylindricality, and described inner ring is made up of the conically shaped be connected as a single entity and roundlet column casing, is connected with multiple stiffening rib radially between described conically shaped and outer ring.Described impeller and the other end of main shaft are rotationally connected and refer to, this joint comprises bearing, bearing trim ring and bearing support, the inner ring close-fitting of described bearing is on the roundlet column casing of main shaft inner ring, and spacing by bearing trim ring, described bearing trim ring is connected with the roundlet column casing of main shaft inner ring by bolt; The outer ring close-fitting of described bearing in bearing support, and connects Rotor carriage, the outer ring of bearing, bearing support and impeller from left to right successively by bolt.
Described bearing is double-row conical bearing.
Described external stator close-fitting is on the inner peripheral surface of support, and corresponding internal rotor magnetic pole is along the circumferential direction evenly embedded on the outer peripheral surface of Rotor carriage, and the polarity of adjacent two internal rotor magnetic poles is contrary; Described inner stator close-fitting is on the outer peripheral surface of the outer ring of main shaft, and corresponding external rotor magnetic poles is along the circumferential direction evenly embedded on the inner peripheral surface of Rotor carriage, and the polarity of adjacent two external rotor magnetic poles is contrary.
Internal rotor rhombus briquetting is embedded with between described two pieces of adjacent in a circumferential direction internal rotor magnetic poles, be embedded with and internal rotor rhombus briquetting external rotor rhombus briquetting one to one between described two pieces of adjacent in a circumferential direction external rotor magnetic poles, often pair of internal rotor rhombus briquetting and external rotor rhombus briquetting are fixed on Rotor carriage by same screw simultaneously.
Described internal rotor magnetic pole along the circumferential direction and external rotor magnetic poles are arranged in parallel in multi-turn in the axial direction, and two adjacent rings internal rotor magnetic pole is attracting, and two adjacent rings external rotor magnetic poles is attracting.
After adopting above structure, the present invention compared with prior art, has following advantage:
1) because structure of the present invention adopts one-sided bearings, middle main shaft does not rotate, one end and the support of main shaft pre-fix, then be connected with cabin again simultaneously, the other end is only supported by a double-row conical bearing, reliably run, this not only simplifies the structure of generator, also shorten the axial dimension of generator.
2) owing to being provided with dual-motor structure in radial directions, take full advantage of the inner space of motor, in other words, it have employed telescopiform structure, namely in a motor, arrange the dual-motor structure having external stator, internal rotor, external rotor and inner stator in radial directions from outside to inside, the radial space of motor is fully used, it has maximum space availability ratio and minimum weight, not only can reduce the load of cabin and pylon, but also greatly can improve the convenience of transport.
3) present invention eliminates electric excitation division separation structure in prior art, born by permanent magnet (internal rotor magnetic patch and external rotor magnetic patch) completely, power up excitation outside not needing, make generator have higher wind energy utilization; Simultaneously, can the core length of interior external stator be made close to isometric, fully effectively improve the axial space utilization ratio of motor, the output voltage of interior external stator also can be made unanimous on the whole, thus make the electric energy of output independent mutually, each via independently current transformer is grid-connected mutually.
4) main shaft in the present invention have employed the structure that inner ring is cone, outer ring is cylindrical body, centre is connected by stiffening rib, usually can be formed by casting, make passive main shaft can be obtained higher rigidity and intensity by less sectional dimension.
5) in the present invention, inner and outer rotors magnetic pole adopts lamination magnetic poles seat, embedded magnetic patch again, form magnetic pole, can eliminate surperficial impulsive magnetic field to the degaussing of magnet and weaken surface eddy to the fever phenomenon of magnetic patch, the obscission that in prior art, surface-mount type magnetic patch produces can be prevented, improve the working life of magnetic patch, also improve reliability of operation.
6) bulk that the internal rotor magnetic pole in the present invention and external rotor magnetic poles all adopt length shorter, instead of in prior art, adopt the strip magnet of adhesive technology, this is owing to adopting adhesive technology, once one piece of magnetic patch is damaged or polarity is wrong, to be difficult to change, even cause whole rotor to scrap, and block magnetic pole rhombus briquetting and screw are fixed, and easily change.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of direct driving type wind driven generator with double motors of the present invention.
Fig. 2 is the partial enlargement structural representation of stators and rotators in the present invention.
Wherein: 1, cabin; 2, support; 3, external stator; 4, internal rotor; 5, Rotor carriage; 6, external rotor; 7, inner stator; 8, bearing support; 9, bearing; 10, bearing trim ring; 11, impeller; 12, main shaft; 121, inner ring; 122, outer ring; 123, stiffening rib; 13, internal rotor magnetic pole; 14, external rotor magnetic poles; 15, internal rotor rhombus briquetting; 16, external rotor rhombus briquetting; 17, screw.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in more detail.
From the structural representation of the direct driving type wind driven generator with double motors of the present invention shown in Fig. 1 and Fig. 2, it comprises cabin 1, support 2, impeller 11, main shaft 12, bimorph transducer and double rotor, one end of described support 2 is connected with cabin 1, and described bimorph transducer and double rotor are all positioned at support 2.Described bimorph transducer and double rotor putting in order from outside to inside is followed successively by external stator 3, internal rotor 4, external rotor 6 and inner stator 7.One end of described main shaft 12 is fixedly connected with the support 2 near side, cabin 1, and impeller 11 is rotationally connected with the other end of main shaft 12.This generator also comprises Rotor carriage 5, and described Rotor carriage 5 is fixedly connected with impeller 11, and described internal rotor 4 and the magnetic patch of external rotor 6 are installed on Rotor carriage 5.Described external stator 3 and support 2 close-fitting, described inner stator 7 and main shaft close-fitting.
Described main shaft 12 comprises the outer ring 122 and inner ring 121 that one end is connected as a single entity, described outer ring 122 is the tubular of great circle cylindricality, described inner ring 121 is made up of the conically shaped be connected as a single entity and roundlet column casing, is connected with multiple stiffening rib 123 between described conically shaped and outer ring 122 radially.
Described impeller 11 is rotationally connected with the other end of main shaft 12 and refers to, this joint comprises bearing 9, bearing trim ring 10 and bearing support 8, the inner ring close-fitting of described bearing 9 is on the roundlet column casing of main shaft inner ring 121, and spacing by bearing trim ring 10, described bearing trim ring 10 is connected with the roundlet column casing of main shaft inner ring 121 by bolt; The outer ring close-fitting of described bearing 9 in bearing support 8, and connects Rotor carriage 5, the outer ring of bearing 9, bearing support 8 and impeller 11 from left to right successively by bolt.Described bearing 9 is the large cone angle double-row conical bearing arranged back-to-back, described layout back-to-back refers to, on the axial direction of bearing, that the two ends diameter dimension that every row tapered roller is formed is respectively major diameter size and small-diameter sized, the small-diameter sized of two row tapered rollers is close, major diameter size away from.
Described external stator 3 close-fitting is on the inner peripheral surface of support 2, and corresponding internal rotor magnetic pole 13 is along the circumferential direction evenly embedded on the outer peripheral surface of Rotor carriage 5, and the polarity of adjacent two internal rotor magnetic poles 13 is contrary.Described inner stator 7 close-fitting is on the outer peripheral surface of the outer ring 122 of main shaft 12, and corresponding external rotor magnetic poles 14 is along the circumferential direction evenly embedded on the inner peripheral surface of Rotor carriage 5, and the polarity of adjacent two external rotor magnetic poles 14 is contrary.
Internal rotor rhombus briquetting 15 is embedded with between described two pieces of adjacent in a circumferential direction internal rotor magnetic poles 13, be embedded with and internal rotor rhombus briquetting 15 external rotor rhombus briquetting 16 one to one between described two pieces of adjacent in a circumferential direction external rotor magnetic poles 14, often pair of internal rotor rhombus briquetting 15 and external rotor rhombus briquetting 16 are fixed on Rotor carriage 5 by same screw 17 simultaneously.
Described internal rotor magnetic pole 13 along the circumferential direction and external rotor magnetic poles 14 are arranged in parallel in multi-turn in the axial direction, and two adjacent rings internal rotor magnetic pole 13 is attracting, and two adjacent rings external rotor magnetic poles 14 is attracting.
Working principle of the present invention is: when wind-drive impeller 11 rotates, driving Rotor carriage 5 rotates by impeller 11, thus drives internal rotor magnetic pole 13 to rotate together with external rotor magnetic poles 14, now, generator is just in generating state, and exports electric energy to electrical network.
Claims (5)
1. a direct driving type wind driven generator with double motors, comprise cabin (1), support (2), impeller (11), main shaft (12), bimorph transducer and double rotor, described support (2) is connected with cabin (1), and described bimorph transducer and double rotor are all positioned at support (2); Described bimorph transducer and double rotor putting in order from outside to inside is followed successively by external stator (3), internal rotor (4), external rotor (6) and inner stator (7); One end of described main shaft (12) is fixedly connected with the support (2) near cabin (1) side, and impeller (11) is rotationally connected with the other end of main shaft (12); This generator also comprises Rotor carriage (5), described Rotor carriage (5) is fixedly connected with impeller (11), and described internal rotor (4) and the magnetic pole of external rotor (6) are installed on Rotor carriage (5); It is characterized in that: described external stator (3) and support (2) close-fitting, described inner stator (7) and main shaft close-fitting; Described main shaft (12) comprises the outer ring (122) and inner ring (121) that one end is connected as a single entity, the tubular that described outer ring (122) is great circle cylindricality, described inner ring (121) is made up of the conically shaped be connected as a single entity and roundlet column casing, is connected with multiple stiffening rib (123) between described conically shaped and outer ring (122) radially; Described impeller (11) is rotationally connected with the other end of main shaft (12) and refers to, the joint be rotationally connected comprises bearing (9), bearing trim ring (10) and bearing support (8), the inner ring close-fitting of described bearing (9) is on the roundlet column casing of main shaft inner ring (121), and spacing by bearing trim ring (10), described bearing trim ring (10) is connected by the roundlet column casing of bolt with main shaft inner ring (121); The outer ring close-fitting of described bearing (9) in bearing support (8), and connects Rotor carriage (5), the outer ring of bearing (9), bearing support (8) and impeller (11) from left to right successively by bolt.
2. direct driving type wind driven generator with double motors according to claim 1, is characterized in that: described bearing (9) is double-row conical bearing.
3. direct driving type wind driven generator with double motors according to claim 1, it is characterized in that: described external stator (3) close-fitting is on the inner peripheral surface of support (2), corresponding internal rotor magnetic pole (13) is along the circumferential direction evenly embedded on the outer peripheral surface of Rotor carriage (5), and the polarity of adjacent two internal rotor magnetic poles (13) is contrary; Described inner stator (7) close-fitting is on the outer peripheral surface of the outer ring (122) of main shaft (12), corresponding external rotor magnetic poles (14) is along the circumferential direction evenly embedded on the inner peripheral surface of Rotor carriage (5), and the polarity of adjacent two external rotor magnetic poles (14) is contrary.
4. direct driving type wind driven generator with double motors according to claim 3, it is characterized in that: between described two adjacent in a circumferential direction internal rotor magnetic poles (13), be embedded with internal rotor rhombus briquetting (15), be embedded with and internal rotor rhombus briquetting (15) external rotor rhombus briquetting (16) one to one between described two adjacent in a circumferential direction external rotor magnetic poles (14), often pair of internal rotor rhombus briquetting (15) and external rotor rhombus briquetting (16) are fixed on Rotor carriage (5) by same screw (17) simultaneously.
5. direct driving type wind driven generator with double motors according to claim 4, it is characterized in that: described internal rotor magnetic pole (13) along the circumferential direction and external rotor magnetic poles (14) are arranged in parallel in multi-turn in the axial direction, two adjacent rings internal rotor magnetic pole (13) is attracting, and two adjacent rings external rotor magnetic poles (14) is attracting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110143501.1A CN102322404B (en) | 2011-05-31 | 2011-05-31 | Direct driving type wind driven generator with double motors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110143501.1A CN102322404B (en) | 2011-05-31 | 2011-05-31 | Direct driving type wind driven generator with double motors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102322404A CN102322404A (en) | 2012-01-18 |
| CN102322404B true CN102322404B (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110143501.1A Expired - Fee Related CN102322404B (en) | 2011-05-31 | 2011-05-31 | Direct driving type wind driven generator with double motors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102322404B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664501A (en) * | 2012-05-08 | 2012-09-12 | 广西银河风力发电有限公司 | Dual-rotor and dual-stator wind power generator and power generator set formed by dual-rotor and dual-stator wind power generator |
| US9018790B2 (en) * | 2012-05-18 | 2015-04-28 | Zhejiang Linix Motor Co., Ltd. | Wind power generation equipment |
| CN105508155B (en) * | 2015-12-31 | 2021-06-01 | 北京金风科创风电设备有限公司 | Wind generating set |
| CN106224178A (en) * | 2016-08-24 | 2016-12-14 | 天津天洲津重风力发电设备有限公司 | A kind of 1.5MW engine compartment seat of wind generating set |
| CN109973313A (en) * | 2017-12-27 | 2019-07-05 | 威海银河风力发电有限公司 | A kind of direct-drive permanent magnet wind power generator of no main shaft |
| CN113007028B (en) * | 2021-03-23 | 2022-05-20 | 上海电气风电集团股份有限公司 | Wind generating set |
| CN115681338A (en) * | 2022-10-31 | 2023-02-03 | 哈尔滨浩星科技有限公司 | Active lubrication ball bearing device actuated by piezoelectric drive |
| CN115681337A (en) * | 2022-10-31 | 2023-02-03 | 哈尔滨浩星科技有限公司 | Active lubrication roller bearing device actuated by piezoelectric drive |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7154193B2 (en) * | 2004-09-27 | 2006-12-26 | General Electric Company | Electrical machine with double-sided stator |
| CN101212154A (en) * | 2007-12-24 | 2008-07-02 | 湘潭电机股份有限公司 | Rotor structure of permanent magnet wind power generator |
| CN201393101Y (en) * | 2009-03-20 | 2010-01-27 | 江苏大中电机股份有限公司 | Rotor structure of low rotating-speed permanent-magnet synchronous generator |
| CN101895178B (en) * | 2010-06-04 | 2011-11-16 | 华小平 | Megawatt dual-rotor direct drive permanent magnet wind driven generator |
| CN101951063A (en) * | 2010-08-05 | 2011-01-19 | 三一电气有限责任公司 | Direct driven wind generator |
| CN202100391U (en) * | 2011-05-31 | 2012-01-04 | 欣达重工股份有限公司 | Double-motor direct driving wind driven generator |
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2011
- 2011-05-31 CN CN201110143501.1A patent/CN102322404B/en not_active Expired - Fee Related
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| CN102322404A (en) | 2012-01-18 |
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