CN102290936A - Large double-rotor permanent magnet generator directly driven by wind and generating set consisting of same - Google Patents
Large double-rotor permanent magnet generator directly driven by wind and generating set consisting of same Download PDFInfo
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- CN102290936A CN102290936A CN201110228960XA CN201110228960A CN102290936A CN 102290936 A CN102290936 A CN 102290936A CN 201110228960X A CN201110228960X A CN 201110228960XA CN 201110228960 A CN201110228960 A CN 201110228960A CN 102290936 A CN102290936 A CN 102290936A
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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
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- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The invention relates to a large double-rotor permanent magnet generator directly driven by wind and a generating set consisting of the same. The generator comprises a stator and rotors, wherein the rotors comprise an external rotor and an internal rotor to form a double-rotor structure; the stator mainly comprises a stator core, an outer ring winding and an inner ring winding; corresponding in-phase windings of the inner and outer ring windings are connected in series in an anti-phase way; the stator is positioned between the external rotor and the internal rotor; the external rotor and the stator form a first working air gap; the internal rotor and the stator form a second working air gap; and the first working air gap is connected in series with a magnetic circuit of the second working air gap. The generating set further comprises a hub, a main shaft, a rotor turntable, a shell and a rack, wherein the stator is fixed inside the shell; and the internal and external rotors are connected and synchronized with the main shaft and the hub by the rotor turntable. Due to the adoption of a double-rotor ring winding structure, the torque power density of a motor is greatly improved, an internal space of the motor is fully utilized, the volume and weight of the motor are reduced, the production cost is reduced and convenience is brought to transportation.
Description
Technical field
The present invention relates to a kind of large-scale direct-drive permanent magnet wind power generator, particularly relate to the generating set of a kind of large-scale dual-rotor direct drive permanent magnet wind driven generator and composition thereof.
Background technology
Continuous development along with the wind-powered electricity generation industry, wind power technology is also constantly being upgraded, is being regenerated, mainly show as: raising single-machine capacity, development new technology are improved the wind-powered electricity generation unit performance, improve wind energy utilization, are reduced wind power cost, pay attention to the control of wind-powered electricity generation unit safety and system reliability more.Directly driving total power changing type wind turbine generator is incorporated into the power networks by frequency converter, ride-through capability to electric network fault is stronger, certain support electrical network ability is arranged, avoided the maintenance workload of high power gearbox, reliability increases, the system effectiveness height, in wind-power market to occupy the wind share more and more higher.But because its rotating speed is very low, along with the increase of power, the manufacturing process complexity of multipole several magneto alternators, technical difficulty is big, and motor volume is big, cost height, transportation difficulty.Along with the continuous increase of unit capacity, big-power transducer costs an arm and a leg has increased its use cost simultaneously.
This shows that above-mentioned existing large-scale direct-drive permanent magnet wind power generator obviously still has inconvenience and defective, and demands urgently further being improved in structure and use.How founding a kind of volume is little, in light weight, cost is low and be convenient to transport the new large-scale dual-rotor direct drive permanent magnet wind driven generator and the generating set of composition thereof, is one of current important research and development problem.
Summary of the invention
The technical problem to be solved in the present invention provides the generating set of a kind of large-scale dual-rotor direct drive permanent magnet wind driven generator and composition thereof, make it can adopt the ring-like winding construction of birotor, greatly improve the motor torque power density, make full use of the inner space of motor, thereby reduce motor volume and weight, both reduced production costs, made things convenient for transportation again, thereby overcame the deficiency of the generating set system of existing large-scale direct-drive permanent magnet wind power generator and composition thereof.
For solving the problems of the technologies described above, a kind of large-scale dual-rotor direct drive permanent magnet wind driven generator of the present invention comprises stator and rotor, and described rotor is the dual-rotor structure that comprises external rotor and internal rotor; Mainly by stator core, outer shroud winding and interior around forming, inner and outer rings winding correspondence is with the anti-phase series connection of phase winding for described stator; Stator is between external rotor and internal rotor, and external rotor and stator form first working gas gap, and internal rotor and stator form second working gas gap, and first working gas gap is connected with the second working gas gap magnetic circuit.
As a kind of improvement of the present invention, described stator inner and outer rings winding all adopts the fractional-slot single-unit apart from concentrating winding configuration.
Described external rotor, internal rotor are formed by rotor core and permanent magnet.
For solving the problems of the technologies described above, the generating set that the present invention also provides a kind of above-mentioned large-scale dual-rotor direct drive permanent magnet wind driven generator to form also comprises wheel hub, main shaft, rotor rotating disk, shell and frame, and wherein: stator is fixed on enclosure; Inside and outside rotor is connected with main shaft, wheel hub by the rotor rotating disk and is synchronous.
As a kind of improvement of the present invention, described shell one side is fixedlyed connected with frame by rear flange, opposite side by forward flange and bearings on main shaft.
Described Bearing Installation is between main shaft and rotor rotating disk.
Described stator is fixedlyed connected with the rear flange inboard.
Described bearing is a double-row roller bearing.
Described main shaft adopts hollow short main shaft.
After adopting such design, the present invention has the following advantages:
1, the kind of drive of the present invention adopts single shaft to hold direct drive mode, has greatly simplified drive mechanism, has significantly reduced complete machine weight simultaneously;
2, motor of the present invention adopts the ring-like winding magneto alternator of birotor, the power/torque density of motor is greatly improved, thereby reduce motor volume and weight, has both reduced cost, has made things convenient for transportation again;
3, the inner and outer rings on the stator of the present invention two cover windings all adopt the fractional-slot single-unit apart from winding configuration, and this winding configuration realizes that easily the machine automation rolls off the production line, and lowers the difficulty of winding rule; This winding configuration can reduce the tip lengths of winding, makes the entire length of motor reduce, and volume reduces, weight saving; Winding overhang is short, has reduced copper consumption, has lowered winding loss, makes the raising that lowers efficiency of the cost of motor; Adopt the fractional-slot single-unit apart from winding configuration, can weaken harmonic component and slot ripples component in the magnetic field induction electromotive force that distributes by non-sinusoidal waveform, and can reduce the teeth groove location torque that caused by slot effect significantly, this also is the operating important indicator of low-speed direct driving permanent magnet generator;
4, stator inner and outer rings winding adopts the mode that is connected in series, and the inner and outer ring windings in series connects a total power converter after connecting, and has reduced the stator outlet, has simplified control system.
Description of drawings
Above-mentioned only is the general introduction of technical solution of the present invention, and for can clearer understanding technological means of the present invention, the present invention is described in further detail below in conjunction with accompanying drawing and embodiment.
Fig. 1 is the cross-sectional structure schematic diagram of the large-scale dual-rotor direct drive permanent magnet wind driven generator of the present invention.
Fig. 2 is the inner and outer rings winding connection schematic diagram of the large-scale dual-rotor direct drive permanent magnet wind driven generator of the present invention.
Fig. 3 is the structural representation of the large-scale dual-rotor direct drive permanent magnet wind driven generator group of the present invention.
Embodiment
See also shown in Figure 1, the large-scale dual-rotor direct drive permanent magnet wind driven generator of the present invention, the dual-rotor structure that adopts external rotor and internal rotor to form, stator is between external rotor and internal rotor.External rotor and stator form first working gas gap, and internal rotor and stator form second working gas gap, and first working gas gap is connected with the second working gas gap magnetic circuit.
Wherein, stator is mainly by stator core 10, outer shroud winding 13 with interiorly forms around group 14, and the inner and outer rings winding all adopts the fractional-slot single-unit apart from concentrated winding configuration.
Please cooperate and consult shown in Figure 2ly, interior corresponding with outer shroud winding 13 the inner and outer rings winding current is the same with the anti-phase series connection of phase winding around group 14, the back-emf stack, and power superposes.
External rotor is made up of outer rotor iron core 8 and external rotor permanent magnet body 9.Internal rotor is made up of internal rotor iron core 12 and internal rotor permanent-magnetic body 11.
Please cooperate and consult shown in Figure 3ly, some short and small center lines are represented the screw bolt and nut of all size among the figure.The generating set that the present invention is made up of above-mentioned large-scale dual-rotor direct drive permanent magnet wind driven generator also comprises wheel hub 1, main shaft 2, rotor rotating disk 6, shell 5 and frame 17.
Wherein, main shaft 2 adopts hollow short main shaft, and front end tightens together through bolt and wheel hub 1.
Bearing 3 is selected double-row roller bearing for use, be sleeved on the main shaft 2, about respectively by main shaft 2, rotor rotating disk 6 location.
Forward flange 4 is placed on the outer shroud of bearing 3, and tightens together through bolt and shell 5.
Tighten together with external rotor front pressuring plate 7, external rotor rear fender 15 respectively through bolt about external rotor.Tighten together through bolt and internal rotor front pressuring plate 18, internal rotor rear fender 19 respectively about internal rotor.Inside and outside rotor tip links together through rotor rotating disk 6, has identical rotating speed.
Between shell 5, frame 17, stator is fixed on rear flange 16 inboards to rear flange 16 through bolt.
The invention provides the generating set of ring-like winding direct-drive permanent magnet wind power generator of a kind of large-scale birotor and composition thereof, can be widely used in MW class and the above direct-driving type wind power generation system, greatly improve the motor torque power density, can significantly reduce production costs and cost of transportation, be beneficial to and improve the competitive advantage of direct-drive permanent magnet wind power generator at wind-power market.
It should be noted that at last: the above only is the preferred embodiments of the present invention, be not limited to the present invention, although the present invention is had been described in detail 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.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a large-scale dual-rotor direct drive permanent magnet wind driven generator comprises stator and rotor, it is characterized in that:
Described rotor is the dual-rotor structure that comprises external rotor and internal rotor;
Mainly by stator core, outer shroud winding and interior around forming, inner and outer rings winding correspondence is with the anti-phase series connection of phase winding for described stator;
Stator is between external rotor and internal rotor, and external rotor and stator form first working gas gap, and internal rotor and stator form second working gas gap, and first working gas gap is connected with the second working gas gap magnetic circuit.
2. large-scale dual-rotor direct drive permanent magnet wind driven generator according to claim 1 is characterized in that described stator inner and outer rings winding all adopts the fractional-slot single-unit apart from concentrating winding configuration.
3. large-scale dual-rotor direct drive permanent magnet wind driven generator according to claim 1 is characterized in that described external rotor, internal rotor are by rotor core and permanent magnet composition.
4. the generating set that each described large-scale dual-rotor direct drive permanent magnet wind driven generator is formed among the claim 1-3 is characterized in that also comprising wheel hub, main shaft, rotor rotating disk, shell and frame, wherein:
Stator is fixed on enclosure;
Inside and outside rotor is connected with main shaft, wheel hub by the rotor rotating disk and is synchronous.
5. large-scale dual-rotor direct drive permanent magnet wind driven generator group according to claim 4 is characterized in that described shell one side fixedlys connected with frame by rear flange, opposite side by forward flange and bearings on main shaft.
6. large-scale dual-rotor direct drive permanent magnet wind driven generator group according to claim 5 is characterized in that described Bearing Installation is between main shaft and rotor rotating disk.
7. large-scale dual-rotor direct drive permanent magnet wind driven generator group according to claim 5 is characterized in that described stator fixedlys connected with the rear flange inboard.
8. large-scale dual-rotor direct drive permanent magnet wind driven generator group according to claim 5 is characterized in that described bearing is a double-row roller bearing.
9. large-scale dual-rotor direct drive permanent magnet wind driven generator group according to claim 4 is characterized in that described main shaft adopts hollow short main shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110228960XA CN102290936A (en) | 2011-08-11 | 2011-08-11 | Large double-rotor permanent magnet generator directly driven by wind and generating set consisting of same |
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| CN201110228960XA CN102290936A (en) | 2011-08-11 | 2011-08-11 | Large double-rotor permanent magnet generator directly driven by wind and generating set consisting of same |
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| CN102290936A true CN102290936A (en) | 2011-12-21 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102594062A (en) * | 2012-02-17 | 2012-07-18 | 国电联合动力技术有限公司 | Double-air-gap hybrid-excitation direct-drive switch-reluctance wind generator and wind generator set system |
| WO2015018083A1 (en) * | 2013-08-09 | 2015-02-12 | 深圳市配天电机技术有限公司 | Birotor motor as well as fan and compressor using same |
| CN104935098A (en) * | 2015-06-25 | 2015-09-23 | 高屋电磁技术(深圳)有限公司 | Flat-wire stacked winding motor |
| CN105099108A (en) * | 2014-05-22 | 2015-11-25 | 华为技术有限公司 | Fan motor and fan |
| CN105914976A (en) * | 2015-02-25 | 2016-08-31 | 株式会社岛野 | Generator for bicycle |
| US20180097427A1 (en) * | 2016-10-05 | 2018-04-05 | Rolls-Royce North American Technologies, Inc. | Multiple coil electric generator in turbine engine |
| CN108110931A (en) * | 2018-01-25 | 2018-06-01 | 博远机电（嘉兴）有限公司 | Stator and motor |
| CN110445323A (en) * | 2019-07-31 | 2019-11-12 | 江苏中车电机有限公司 | Large-scale rotor of direct-drive permanent magnet wind driven generator makes overall process anti-deformation device |
| US10513986B2 (en) | 2016-10-05 | 2019-12-24 | Rolls-Royce North American Technologies, Inc. | Counter-rotating electric generator in turbine engine |
| CN112532000A (en) * | 2020-11-27 | 2021-03-19 | 李亚兵 | Novel direct-current generator without specific lenz effect |
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| CN101272064A (en) * | 2008-05-06 | 2008-09-24 | 南京航空航天大学 | High-capacity light permanent-magnetic radial/axial rotor structure direct driving type aerogenerator |
| CN101917101A (en) * | 2010-08-06 | 2010-12-15 | 国电联合动力技术有限公司 | Double-stator direct-drive permanent magnet wind powered generator |
| CN202183711U (en) * | 2011-08-11 | 2012-04-04 | 国电联合动力技术有限公司 | Large double-rotor direct driving permanent magnet wind driven generator and generator set formed by same |
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2011
- 2011-08-11 CN CN201110228960XA patent/CN102290936A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101272064A (en) * | 2008-05-06 | 2008-09-24 | 南京航空航天大学 | High-capacity light permanent-magnetic radial/axial rotor structure direct driving type aerogenerator |
| CN101917101A (en) * | 2010-08-06 | 2010-12-15 | 国电联合动力技术有限公司 | Double-stator direct-drive permanent magnet wind powered generator |
| CN202183711U (en) * | 2011-08-11 | 2012-04-04 | 国电联合动力技术有限公司 | Large double-rotor direct driving permanent magnet wind driven generator and generator set formed by same |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013120230A1 (en) * | 2012-02-17 | 2013-08-22 | 国电联合动力技术有限公司 | Double air-gap hybrid excitation direct-drive switch reluctance wind generator and assembly system thereof |
| CN102594062A (en) * | 2012-02-17 | 2012-07-18 | 国电联合动力技术有限公司 | Double-air-gap hybrid-excitation direct-drive switch-reluctance wind generator and wind generator set system |
| CN105453394B (en) * | 2013-08-09 | 2018-09-21 | 深圳市配天电机技术有限公司 | A kind of double-rotor machine and fan, compressor using this motor |
| WO2015018083A1 (en) * | 2013-08-09 | 2015-02-12 | 深圳市配天电机技术有限公司 | Birotor motor as well as fan and compressor using same |
| CN105453394A (en) * | 2013-08-09 | 2016-03-30 | 深圳市配天电机技术有限公司 | Birotor motor as well as fan and compressor using same |
| CN105099108A (en) * | 2014-05-22 | 2015-11-25 | 华为技术有限公司 | Fan motor and fan |
| CN105099108B (en) * | 2014-05-22 | 2017-11-17 | 华为技术有限公司 | Fan electromotor and fan |
| CN105914976A (en) * | 2015-02-25 | 2016-08-31 | 株式会社岛野 | Generator for bicycle |
| CN104935098A (en) * | 2015-06-25 | 2015-09-23 | 高屋电磁技术(深圳)有限公司 | Flat-wire stacked winding motor |
| US20180097427A1 (en) * | 2016-10-05 | 2018-04-05 | Rolls-Royce North American Technologies, Inc. | Multiple coil electric generator in turbine engine |
| EP3306793A1 (en) * | 2016-10-05 | 2018-04-11 | Rolls-Royce North American Technologies, Inc. | Multiple coil electric generator in turbine engine |
| US10312781B2 (en) | 2016-10-05 | 2019-06-04 | Rolls-Royce North American Technologies, Inc. | Multiple coil electric generator in turbine engine |
| US10513986B2 (en) | 2016-10-05 | 2019-12-24 | Rolls-Royce North American Technologies, Inc. | Counter-rotating electric generator in turbine engine |
| CN108110931A (en) * | 2018-01-25 | 2018-06-01 | 博远机电（嘉兴）有限公司 | Stator and motor |
| CN108110931B (en) * | 2018-01-25 | 2024-02-06 | 博远机电（嘉兴）有限公司 | Stator and motor |
| CN110445323A (en) * | 2019-07-31 | 2019-11-12 | 江苏中车电机有限公司 | Large-scale rotor of direct-drive permanent magnet wind driven generator makes overall process anti-deformation device |
| CN112532000A (en) * | 2020-11-27 | 2021-03-19 | 李亚兵 | Novel direct-current generator without specific lenz effect |
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Application publication date: 20111221 |