CN102322404A - Direct driving type wind driven generator with double motors - Google Patents
Direct driving type wind driven generator with double motors Download PDFInfo
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- CN102322404A CN102322404A CN201110143501A CN201110143501A CN102322404A CN 102322404 A CN102322404 A CN 102322404A CN 201110143501 A CN201110143501 A CN 201110143501A CN 201110143501 A CN201110143501 A CN 201110143501A CN 102322404 A CN102322404 A CN 102322404A
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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
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, specifically is a kind of powerful dual-motor direct-drive aerogenerator that is applicable to.
Background technique
In the MW class power generator of existing technology about 80% is to adopt double-fed generator, and promptly wind wheel drives wind turbine power generation through a multi-stage acceleration machine.In the process of wind-driven generator operation, the fault of booster engine is higher relatively, generally about 70%.In recent years, for addressing this problem, released the permanent magnet direct-drive wind-force generating machine that does not need booster engine.But the permanent magnet direct-drive wind-force generating machine, because its motion speed low (being usually less than 20r/min), so its generator is bulky, has accomplished 5m like the diameter that the direct-drive aerogenerator of 2MW has.And the coastal wind resource of China is abundant, in order to make full use of Oversea wind resource and the wind power equipment investment that reduces unit K W, hopes that wind-driven generator does more, like 5MW or bigger.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, and like this, it is impossible that transportation and scene are mounted for.Therefore, often adopt the non-direct drive scheme of booster engine at present for the wind-driven generator of 3MW.And as above-mentioned, booster engine is the device of a high rate of fault, and wind turbine equipment needs the booster engine of a long-term high reliability operation of ability.
200710020545.9 patent application application number is disclosed on the Chinese patent website is; It has adopted a kind of Resultant field; The dual-motor structure that duplex bearing supports, promptly 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 the motor housing, and inner stator is fixed on the inner stator support; The inner stator support is fixed on the electric motor end cap; The different outer permanent magnet of polarity is staggered and is distributed in the outer wall of cup-shaped rotor, and 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 the rotating shaft, and electric exciting winding is enclosed within the electric exciting winding support, and electric exciting winding support is fixed on the end cap.But, the shortcoming below the dual-motor direct drive generator of this structure exists:
1) because this structure is to adopt duplex bearing to support, i.e. the two ends of rotating shaft are by the housing supports of motor, the structure relative complex, and its axial dimension is bigger;
2) the electric excitation in the Resultant field, rotating shaft need be adopted non-magnetic conductive steel, stainless steel for example, and stainless intensity is lower, costs an arm and a leg, and as satisfying desirable strength, certainly will increase the sectional dimension of rotating shaft, therefore, will increase considerably its manufacture cost;
3) in addition, for improving utilization ratio of wind energy, adopt the method for electric excitation, but electric excitation is wanted power consumption, therefore, can reduce the wind energy utilization of generator; And an electric excitation only externally stator motor works, therefore, and the also just output of external stator of adjusting, and can not regulate the output of inner stator, therefore be difficult to obtain the optimal wind energy utilization.
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 under the situation that does not increase volume that generator power is bigger, manufacture cost is lower, also can improve the dual-motor direct-drive aerogenerator of wind energy utilization simultaneously.
For solving the problems of the technologies described above; Dual-motor direct-drive aerogenerator provided by the invention; Comprise cabin, support, impeller, main shaft, two stator and double rotor; One end of described support is connected with the cabin, and the described pair of stator and double rotor all are positioned at support, and the described pair of stator 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 support near cabin one side, 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 the magnetic pole of described internal rotor and external rotor is installed on the Rotor carriage; Described external stator and support close-fitting, described inner stator and main shaft close-fitting.
Described main shaft comprises outer ring and the inner ring that an 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 conically shaped that is connected as a single entity and roundlet column casing, is connected with a plurality of stiffening ribs between described conically shaped and the outer ring radially.
The other end of described impeller and main shaft is rotationally connected and is meant; 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 the bearing trim ring, described bearing trim ring is connected with the roundlet column casing of main shaft inner ring through bolt; The outer ring close-fitting of described bearing and connects outer ring, bearing support and the impeller of Rotor carriage, bearing from left to right successively through bolt in bearing support.
Described bearing is a double-row conical bearing.
Described external stator close-fitting is on the inner peripheral surface of support, and corresponding internal rotor magnetic pole along the circumferential direction evenly is embedded on the outer peripheral surface of Rotor carriage, and the polarity of adjacent two internal rotor magnetic poles is opposite; Described inner stator close-fitting is on the outer peripheral surface of the outer ring of main shaft, and corresponding external rotor magnetic poles along the circumferential direction evenly is embedded on the inner peripheral surface of Rotor carriage, and the polarity of adjacent two external rotor magnetic poles is opposite.
Be embedded with internal rotor rhombus briquetting between described two adjacent in a circumferential direction internal rotor magnetic poles; Be embedded with between described two adjacent in a circumferential direction external rotor magnetic poles and internal rotor rhombus briquetting external rotor rhombus briquetting one to one, the every pair of internal rotor rhombus briquetting and external rotor rhombus briquetting simultaneously through same screw on Rotor carriage.
Described internal rotor magnetic pole and external rotor magnetic poles along the circumferential direction is in the axial direction how circle is arranged in parallel, and two adjacent rings internal rotor magnetic pole is inhaled mutually, and the two adjacent rings external rotor magnetic poles is inhaled mutually.
After adopting above structure, the present invention compared with prior art has following advantage:
1) because structure of the present invention is to adopt one-sided bearings; Middle main shaft does not rotate, and an end and the support of main shaft pre-fix, and then links with the cabin simultaneously again; The other end is only supported by a double-row conical bearing; Just can move reliably, this has not only simplified generator Structure, has also shortened the axial dimension of generator.
2) owing to be provided with the dual-motor structure in the radial direction, made full use of the inner space of motor, in other words; It has adopted the telescopiform structure, promptly in a motor, in the dual-motor structure of arranging to have external stator, internal rotor, external rotor and inner stator in the radial direction 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 can improve the convenience of transportation greatly.
3) the present invention has cancelled electric excitation division separation structure in the existing technology, is born by permanent magnet (internal rotor magnetic patch and external rotor magnetic patch) fully, does not power up excitation outside not needing, and makes generator have higher wind energy utilization; Simultaneously; Can the core length of interior external stator be made near isometric, fully improve the axial space utilization ratio of motor effectively, also can make the output voltage of inside and outside stator unanimous on the whole; Thereby the electric energy that makes output is independent mutually, separately through mutually independently current transformer be incorporated into the power networks.
4) to have adopted inner ring be that cone, outer ring are cylindrical body, the middle structure that is connected by stiffening rib to the main shaft among the present invention, can be formed by casting usually, makes passive main shaft can be obtained higher rigidity and intensity by less sectional dimension.
5) the inner and outer rotors magnetic pole adopts lamination magnetic poles seat among the present invention; Embedded again magnetic patch; Form magnetic pole, can eliminate of the degaussing and weakening surface eddy heating phenomenon to magnetic patch of surperficial impulsive magnetic field, can prevent the obscission that the surface-mount type magnetic patch produces in the existing technology magnet; Improve the working life of magnetic patch, also improved reliability of operation.
6) internal rotor magnetic pole among the present invention and external rotor magnetic poles all adopt the short bulk of length; Rather than the strip magnet of available technology adopting adhesive technology, this is owing to adopt adhesive technology, in case magnetic patch breakage or polarity are wrong; To be difficult to change; Even cause whole rotor to scrap, and block magnetic pole rhombus briquetting and screw are changed easily.
Description of drawings
Fig. 1 is the sectional structure schematic representation of dual-motor direct-drive aerogenerator of the present invention.
Fig. 2 is the local structure for amplifying schematic representation of stator and rotor among 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 accompanying drawing and embodiment the present invention is done explanation in further detail.
Structural representation by dual-motor direct-drive aerogenerator of the present invention illustrated in figures 1 and 2 can be known; It comprises cabin 1, support 2, impeller 11, main shaft 12, two stator and double rotor; One end of described support 2 is connected with cabin 1, and the described pair of stator and double rotor all are positioned at support 2.The described pair of stator 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 support 2 near cabin 1 one sides, 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 the magnetic patch of described internal rotor 4 and external rotor 6 is installed on the Rotor carriage 5.Described external stator 3 and support 2 close-fittings, described inner stator 7 and main shaft close-fitting.
Described main shaft 12 comprises the outer ring 122 and inner ring 121 that an 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 conically shaped that is connected as a single entity and roundlet column casing, is connected with a plurality of stiffening ribs 123 between described conically shaped and the outer ring 122 radially.
The other end of described impeller 11 and main shaft 12 is rotationally connected and is meant; 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 through bolt; The outer ring close-fitting of described bearing 9 and connects outer ring, bearing support 8 and the impeller 11 of Rotor carriage 5, bearing 9 from left to right successively through bolt in bearing support 8.Described bearing 9 is the big cone angle double-row conical bearing of arranging back-to-back; The described layout back-to-back is meant; On the axial direction of bearing; That the formed two ends of every row tapered roller diameter dimension is respectively the major diameter size and small-diameter sized, the small-diameter sized of two row tapered rollers near, major diameter size away from.
Described external stator 3 close-fittings are on the inner peripheral surface of support 2, and corresponding internal rotor magnetic pole 13 along the circumferential direction evenly is embedded on the outer peripheral surface of Rotor carriage 5, and the polarity of adjacent two internal rotor magnetic poles 13 is opposite.Described inner stator 7 close-fittings are on the outer peripheral surface of the outer ring 122 of main shaft 12, and corresponding external rotor magnetic poles 14 along the circumferential direction evenly is embedded on the inner peripheral surface of Rotor carriage 5, and the polarity of adjacent two external rotor magnetic poles 14 is opposite.
Be embedded with internal rotor rhombus briquetting 15 between described two adjacent in a circumferential direction internal rotor magnetic poles 13; Be embedded with between described two adjacent in a circumferential direction external rotor magnetic poles 14 and internal rotor rhombus briquetting 15 external rotor rhombus briquetting 16 one to one, every pair of internal rotor rhombus briquetting 15 is fixed on the Rotor carriage 5 through same screw 17 with external rotor rhombus briquetting 16 simultaneously.
Described internal rotor magnetic pole 13 along the circumferential direction is many circles in the axial direction with external rotor magnetic poles 14 and is arranged in parallel, and two adjacent rings internal rotor magnetic pole 13 is inhaled mutually, and two adjacent rings external rotor magnetic poles 14 is inhaled mutually.
Working principle of the present invention is: when 11 rotations of wind-drive impeller; Impeller 11 will drive Rotor carriage 5 and rotate, and rotate together with external rotor magnetic poles 14 thereby drive internal rotor magnetic pole 13, at this moment; Generator just is in generating state, and to electrical network output electric energy.
Claims (7)
1. dual-motor direct-drive aerogenerator; Comprise cabin (1), support (2), impeller (11), main shaft (12), two stator and double rotor; Described support (2) is connected with cabin (1); The described pair of stator and double rotor all are positioned at support (2), it is characterized in that: the described pair of stator 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 support (2) near cabin (1) one side, 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 the magnetic pole of described internal rotor (4) and external rotor (6) is installed on the Rotor carriage (5); Described external stator (3) and support (2) close-fitting, described inner stator (7) and main shaft close-fitting.
2. dual-motor direct-drive aerogenerator according to claim 1; It is characterized in that: described main shaft (12) comprises outer ring (122) and the inner ring (121) that an 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 conically shaped that is connected as a single entity and roundlet column casing, is connected with a plurality of stiffening ribs (123) between described conically shaped and outer ring (122) radially.
3. dual-motor direct-drive aerogenerator according to claim 2; It is characterized in that: the other end of described impeller (11) and main shaft (12) is rotationally connected and is meant; 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 is and spacing by bearing trim ring (10), and described bearing trim ring (10) is connected with the roundlet column casing of main shaft inner ring (121) through bolt; The outer ring close-fitting of described bearing (9) and connects outer ring, bearing support (8) and the impeller (11) of Rotor carriage (5), bearing (9) from left to right successively through bolt in bearing support (8).
4. dual-motor direct-drive aerogenerator according to claim 3 is characterized in that: described bearing (9) is a double-row conical bearing.
5. dual-motor direct-drive aerogenerator according to claim 2; 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) along the circumferential direction evenly is embedded on the outer peripheral surface of Rotor carriage (5), and the polarity of adjacent two internal rotor magnetic poles (13) is opposite; 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) along the circumferential direction evenly is embedded on the inner peripheral surface of Rotor carriage (5), and the polarity of adjacent two external rotor magnetic poles (14) is opposite.
6. dual-motor direct-drive aerogenerator according to claim 5; It is characterized in that: be embedded with internal rotor rhombus briquetting (15) between described adjacent in a circumferential direction two internal rotor magnetic poles (13); Be embedded with between described adjacent in a circumferential direction two external rotor magnetic poles (14) and internal rotor rhombus briquetting (15) external rotor rhombus briquetting (16) one to one, every pair of internal rotor rhombus briquetting (15) and external rotor rhombus briquetting (16) are fixed on the Rotor carriage (5) through same screw (17) simultaneously.
7. dual-motor direct-drive aerogenerator according to claim 6; It is characterized in that: described internal rotor magnetic pole (13) and external rotor magnetic poles (14) along the circumferential direction is in the axial direction how circle is arranged in parallel; Two adjacent rings internal rotor magnetic pole (13) is inhaled mutually, and two adjacent rings external rotor magnetic poles (14) is inhaled mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110143501.1A CN102322404B (en) | 2011-05-31 | 2011-05-31 | Direct driving type wind driven generator with double motors |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110143501.1A CN102322404B (en) | 2011-05-31 | 2011-05-31 | Direct driving type wind driven generator with double motors |
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| CN102322404A true CN102322404A (en) | 2012-01-18 |
| CN102322404B CN102322404B (en) | 2015-06-10 |
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| CN201110143501.1A Active CN102322404B (en) | 2011-05-31 | 2011-05-31 | Direct driving type wind driven generator with double motors |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| WO2013120327A1 (en) * | 2012-05-18 | 2013-08-22 | 浙江联宜电机股份有限公司 | Wind turbine |
| CN105508155A (en) * | 2015-12-31 | 2016-04-20 | 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 |
| CN113007028A (en) * | 2021-03-23 | 2021-06-22 | 上海电气风电集团股份有限公司 | Wind generating set |
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| US20060071575A1 (en) * | 2004-09-27 | 2006-04-06 | General Electric Company | Electrical machine with double-sided stator |
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Cited By (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 |
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| 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 |
| CN113007028A (en) * | 2021-03-23 | 2021-06-22 | 上海电气风电集团股份有限公司 | Wind generating set |
| 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 |
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| CN102322404B (en) | 2015-06-10 |
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