CN201985718U - 5MW direct-drive permanent magnet wind generator with two rotors, two stators and two air gaps - Google Patents
5MW direct-drive permanent magnet wind generator with two rotors, two stators and two air gaps Download PDFInfo
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- CN201985718U CN201985718U CN2011201175683U CN201120117568U CN201985718U CN 201985718 U CN201985718 U CN 201985718U CN 2011201175683 U CN2011201175683 U CN 2011201175683U CN 201120117568 U CN201120117568 U CN 201120117568U CN 201985718 U CN201985718 U CN 201985718U
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Abstract
The utility model provides a 5MW direct-drive permanent magnet wind generator with two rotors, two stators and two air gaps. The generator comprises a main shaft, a frame and an inner rotor motor stator arranged in the frame, and is characterized in that an outer rotor motor stator is arranged in the inner rotor motor stator, wherein an inner rotor motor rotor and an outer rotor motor rotor in synchronous rotation are arranged between the inner rotor motor stator and the outer rotor motor stator; an inner rotor motor magnetic pole is arranged on one side of the inner rotor motor rotor facing to the inner rotor motor stator; and an outer rotor motor magnetic pole is arranged on one side of the outer rotor motor rotor facing to the outer rotor motor stator. The generator provided by the utility model is specially designed and manufactured to match with a large-scale direct-drive wind generating set, thereby particularly suiting the development and application of a large-scale offshore wind generating set.
Description
Technical field
The utility model relates to a kind of high-power generator, especially designs a kind of 5MW birotor, two stator, two air gap direct-drive permanent magnet wind power generator.
Background technology
High-power Ultra-Low Speed directly drives wind-driven generator, because rotating speed is low, volume is all very big, and quality is all very heavy, is subjected to the restriction of highway and railway transportation again, and development has run into a lot of difficulties.High-power Ultra-Low Speed directly drives excessive that the external diameter of wind-driven generator can not do, because being restricted of highway and railway transportation, otherwise motor need adopt the distinguish mode, brings difficulty not only can for manufacturing, installation and the reliability of motor, and can increase the cost of motor.On the other hand, for large diameter multipolar dynamo, rotor yoke portion is thinner, and motor cavity is not fully utilized.How in limited space, increasing exerting oneself of motor under the condition that does not increase motor volume, is that super high power directly drives the key subjects that the wind-driven generator designing institute faces.
Summary of the invention
The utility model purpose: the utility model provides a kind of 5MW birotor, two stator, two air gap direct-drive permanent magnet wind power generator, its objective is that solution wind-driven generator volume in the past is big, the problem that the motor delivery efficiency is low.
Technical scheme: the utility model is achieved through the following technical solutions:
A kind of 5MW birotor, two stators, two air gap direct-drive permanent magnet wind power generators, comprise main shaft, support, be arranged on the inner rotor motor stator in the support, it is characterized in that: in described inner rotor motor stator, be provided with the external rotor electric machine stator, be provided with the inner rotor motor rotor and the External rotor electric machine rotor of synchronous rotation between inner rotor motor stator and the external rotor electric machine stator, the inner rotor motor rotor is provided with the inner rotor motor magnetic pole towards a side of inner rotor motor stator, and an External rotor electric machine rotor side of rotor electric machine stator outward is provided with the external rotor electric machine magnetic pole.
Inner rotor motor rotor and External rotor electric machine rotor connect as one, and are arranged on the combined rotor axle, and the combined rotor axle is by fore bearing and rear bearing is rotating is arranged on the main shaft.
The place ahead of support is provided with front end housing, and the rear of support is provided with rear end cap.
Be provided with the impeller lock of control combination armature spindle at the rear of support.
Inner rotor motor rotor and External rotor electric machine rotor adopt the design of 120 utmost points, and inner rotor motor stator and external rotor electric machine stator adopt the fractional-slot structure of 378 grooves.
Magnetic pole on inner rotor motor rotor and the External rotor electric machine rotor is installed and is adopted the hermetically sealed gland mounting structure of corrosion resistant plate.
The diameter of whole generating machine is that 5400mm, installed surface length are 2313mm.
It is long that inner rotor motor rotor and External rotor electric machine rotor have identical iron core.
Advantage and effect:
The utility model provides a kind of 5MW birotor, two stators, two air gap direct-drive permanent magnet wind power generators, comprise main shaft, support, be arranged on the inner rotor motor stator in the support, it is characterized in that: in described inner rotor motor stator, be provided with the external rotor electric machine stator, be provided with the inner rotor motor rotor and the External rotor electric machine rotor of synchronous rotation between inner rotor motor stator and the external rotor electric machine stator, the inner rotor motor rotor is provided with the inner rotor motor magnetic pole towards a side of inner rotor motor stator, and an External rotor electric machine rotor side of rotor electric machine stator outward is provided with the external rotor electric machine magnetic pole.
The inside and outside rotor combined design that the utility model adopts, the approach of a kind of innovation that addresses the above problem exactly.
The utility model has carried out special electromagnetic field and structural design according to application technology requirement, aloft work, applied environment, the characteristics in 20 year useful life of high-power wind-driven generator.The high-power Ultra-Low Speed of the utility model directly drives wind-driven generator and adopts a main shaft, a cover rotor, a support, a volume, a rotating speed design.
The utlity model has following advantage: under equal volume, equal quality, equal speed conditions, power can increase more than 65%; Weight can reduce more than 30%.
Description of drawings:
Fig. 1 is that inside and outside rotor combined direct-drive permanent magnet wind power generator stator rotor of the present utility model concerns schematic diagram;
Fig. 2 is an overall structure schematic diagram of the present utility model;
1 quiet main shaft, 2 combined rotor axles, 3 fore bearings, 4 front end housings, 5 supports, 6 inner rotor motor stators, 7 inner rotor motor magnetic poles, 8 inner rotor motor rotors, 9 External rotor electric machine rotors, 10 external rotor electric machine magnetic poles, 11 external rotor electric machine stators, 12 rear bearings, 13 rear end caps, 14 impellers lock.
Embodiment:Below in conjunction with accompanying drawing the utility model is further described:
As shown in Figure 2, the utility model provides a kind of 5MW birotor, two stators, two air gap direct-drive permanent magnet wind power generators, comprise main shaft 1, support 5, be arranged on the inner rotor motor stator 6 in the support 5, in described inner rotor motor stator 6, be provided with external rotor electric machine stator 11, as shown in Figure 1, be provided with the inner rotor motor rotor 8 and the External rotor electric machine rotor 9 of synchronous rotation between inner rotor motor stator 6 and the external rotor electric machine stator 11, inner rotor motor rotor 8 is provided with inner rotor motor magnetic pole 7 towards a side of inner rotor motor stator 6, and External rotor electric machine rotor 9 side of rotor electric machine stator 11 outward is provided with external rotor electric machine magnetic pole 10.
Inner rotor motor rotor 8 and External rotor electric machine rotor 9 connect as one, and inner rotor motor rotor 8 and External rotor electric machine rotor 9 are arranged on the combined rotor axle 2, and combined rotor axle 2 is by fore bearing 3 and rear bearing 12 rotating being arranged on the main shaft 1.
The place ahead of support 5 is provided with front end housing 4, and the rear of support 5 is provided with rear end cap 13.
Be provided with the impeller lock 14 of control combination armature spindle 2 at the rear of support 5.
Inner rotor motor rotor 8 and External rotor electric machine rotor 9 adopt the design of 120 utmost points, and inner rotor motor stator 6 and external rotor electric machine stator 11 adopt the fractional-slot structure of 378 grooves.
Magnetic pole on inner rotor motor rotor 8 and the External rotor electric machine rotor 9 is installed and is adopted the hermetically sealed gland mounting structure of corrosion resistant plate.Quiet main shaft 1 has adopted big circular cone hollow thin-wall spheroidal graphite cast-iron fixed installation structure; Inner rotor motor magnetic pole 7, inner rotor motor rotor 8, External rotor electric machine rotor 9, external rotor electric machine magnetic pole 10 are combined into combined rotor; Inner rotor motor stator 6 and external rotor electric machine stator 11 are combined into combined stator;
Support 5 adopts structural member to form; Front end housing 4 adopts the composite material manufacturing, and rear end cap 13 adopts the structural member manufacturing; Combined rotor axle 2 is installed on the front-end and back-end of the quiet main shaft 1 of motor by fore bearing 3 and rear bearing 12, drives combined rotor axle 2 rotary electrifications by the wind wheel that is directly installed on combined rotor axle 2 front ends;
The diameter of whole generating machine is that 5400mm, installed surface length are 2313mm.
It is long that inner rotor motor rotor 8 and External rotor electric machine rotor 9 have identical iron core.
Position among Fig. 2 shown in the alphabetical A connects wind wheel, and letter b connects cabin revolution underframe.
The utility model adopts the combining structure of an inner rotor motor and another external rotor electric machine, that is to say, as shown in Figure 1, inner rotor motor stator 6, inner rotor motor rotor 8 and the inner rotor motor magnetic pole 7 that is arranged on the inner rotor motor rotor 8 form inner rotor motors; External rotor electric machine stator 11, External rotor electric machine rotor 9 and be arranged on external rotor electric machine magnetic pole 10 formation external rotor electric machine then on the External rotor electric machine rotor 9.External rotor electric machine inserts in the inner chamber of inner rotor motor, does not take other space, and the comparable separate unit motor of exerting oneself of generator improves more than 65%.
The inner and outer rotors motor all adopts identical number of poles, groove number, winding construction pattern and connected mode, and it is long to have an identical iron core, but two motors do not have coupled relation on electromagnetism, but independent operating.The power division of internal rotor and external rotor electric machine is 3: 2.
Inner and outer rotors motor assembly relation, the sixth of the motor that only drawn among Fig. 1.Inner rotor motor stator 6 and external rotor electric machine stator 11 are separately fixed on the static inside and outside stator support, and the iron core of inner rotor motor rotor 8 and External rotor electric machine rotor 9 is independently, be bound up and be fixed on the rotor field spider by connector, by the wind energy conversion system driven rotary.
When shutting down maintenance, finishes by motor by energy consumption of electrical machinery braking and impeller lock 14;
Motor radiating: inner rotor motor adopts the wall-attaching type gusset that dispels the heat natural air cooled outward, and external rotor electric machine is adopted
With heat radiation gusset air blast cooling in the wall-attaching type.
115 tons of maximum gauge 5400mm of the present utility model, maximum weights, be to aim at large-scale direct-drive aerogenerator group to carry out particular design, special manufacturing, specialized supporting generator, all reached specification requirement and the reliability requirement of wind turbine generator generator through Electromagnetic Calculation, FEM (finite element) calculation, the tired calculating of optimizing.Especially the Application and Development that is fit to marine Large-scale Wind Turbines.
Claims (8)
1. 5MW birotor, two stators, two air gap direct-drive permanent magnet wind power generators, comprise main shaft (1), support (5), be arranged on the inner rotor motor stator (6) in the support (5), it is characterized in that: in described inner rotor motor stator (6), be provided with external rotor electric machine stator (11), be provided with the inner rotor motor rotor (8) and the External rotor electric machine rotor (9) of synchronous rotation between inner rotor motor stator (6) and the external rotor electric machine stator (11), inner rotor motor rotor (8) is provided with inner rotor motor magnetic pole (7) towards a side of inner rotor motor stator (6), and External rotor electric machine rotor (a 9) side of rotor electric machine stator (11) outward is provided with external rotor electric machine magnetic pole (10).
2. a kind of 5MW birotor according to claim 1, two stator, two air gap direct-drive permanent magnet wind power generator, it is characterized in that: inner rotor motor rotor (8) and External rotor electric machine rotor (9) connect as one, and be arranged on the combined rotor axle (2), combined rotor axle (2) is by fore bearing (3) and rear bearing (12) is rotating is arranged on the main shaft (1).
3. a kind of 5MW birotor according to claim 1 and 2, two stator, two air gap direct-drive permanent magnet wind power generator is characterized in that: the place ahead of support (5) is provided with front end housing (4), and the rear of support (5) is provided with rear end cap (13).
4. a kind of 5MW birotor according to claim 2, two stator, two air gap direct-drive permanent magnet wind power generator is characterized in that: the impeller lock (14) that is provided with control combination armature spindle (2) at the rear of support (5).
5. a kind of 5MW birotor according to claim 1, two stator, two air gap direct-drive permanent magnet wind power generator, it is characterized in that: inner rotor motor rotor (8) and External rotor electric machine rotor (9) adopt the design of 120 utmost points, and inner rotor motor stator (6) and external rotor electric machine stator (11) adopt the fractional-slot structure of 378 grooves.
6. a kind of 5MW birotor according to claim 5, two stator, two air gap direct-drive permanent magnet wind power generator is characterized in that: the magnetic pole on inner rotor motor rotor (8) and the External rotor electric machine rotor (9) is installed and is adopted the hermetically sealed gland mounting structure of corrosion resistant plate.
7. a kind of 5MW birotor according to claim 1, two stator, two air gap direct-drive permanent magnet wind power generator is characterized in that: the diameter of whole generating machine is that 5400mm, installed surface length are 2313mm.
8. a kind of 5MW birotor according to claim 1, two stator, two air gap direct-drive permanent magnet wind power generator is characterized in that: it is long that inner rotor motor rotor (8) and External rotor electric machine rotor (9) have identical iron core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201175683U CN201985718U (en) | 2011-04-20 | 2011-04-20 | 5MW direct-drive permanent magnet wind generator with two rotors, two stators and two air gaps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201175683U CN201985718U (en) | 2011-04-20 | 2011-04-20 | 5MW direct-drive permanent magnet wind generator with two rotors, two stators and two air gaps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201985718U true CN201985718U (en) | 2011-09-21 |
Family
ID=44613168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201175683U Expired - Fee Related CN201985718U (en) | 2011-04-20 | 2011-04-20 | 5MW direct-drive permanent magnet wind generator with two rotors, two stators and two air gaps |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201985718U (en) |
-
2011
- 2011-04-20 CN CN2011201175683U patent/CN201985718U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110921 Termination date: 20150420 |
|
| EXPY | Termination of patent right or utility model |