CN205029443U - Generator and wind generating set - Google Patents
Generator and wind generating set Download PDFInfo
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- CN205029443U CN205029443U CN201520764167.5U CN201520764167U CN205029443U CN 205029443 U CN205029443 U CN 205029443U CN 201520764167 U CN201520764167 U CN 201520764167U CN 205029443 U CN205029443 U CN 205029443U
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- 238000012423 maintenance Methods 0.000 description 3
- 230000005284 excitation Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000239290 Araneae Species 0.000 description 1
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- 238000005452 bending Methods 0.000 description 1
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- 230000003292 diminished effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
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Abstract
The utility model provides a generator and wind generating set. This generator includes rotor, stator to reach along the radial air gap that forms between rotor and stator of generator, the generator still includes: first air gap control assembly sets up on the rotor, and first air gap control assembly has first magnetic pole, interstice control assembly sets up on the stator, and interstice control assembly has a second magnetic pole, first magnetic pole and second magnetic pole orientation each other, and polarity identical. This generator can support stator and rotor through the repulsion between the magnetic pole, ensures effectively that the air gap is stable.
Description
Technical field
The utility model relates to field of generating equipment, particularly relates to a kind of generator and wind turbine generator.
Background technology
Wind turbine generator usually can be divided into two large classes structure: between impeller and generator, arrange the double-fed type unit of gearbox and the direct drive generator group of non-gear box.For direct drive generator group, no matter be magneto or electric excitation type unit, the air gap (hereinafter referred to as air gap) between generator unit stator and rotor is all an important electromagnetic parameter.For operating generator, the uniformity of its air gap will directly affect the electrical characteristic of generator and the stable of mechanical performance.
As depicted in figs. 1 and 2, generally speaking, direct-drive aerogenerator comprises the large parts in impeller 80, generator 70 and cabin 90 3, and generator 70 is made up of rotor 10 and stator 20 again.At the inner surface of rotor 10, be usually furnished with winding, at the outer surface of stator 20, be usually furnished with the magnetic pole of permanent magnetism or electric excitation.Wind energy transformation is the torque driving generator amature 10 by the blade on impeller 80, utilizes the rotation between stator 20 and rotor 10, cutting magnetic line, realizes the generating of generator.
Impeller 80 and generator amature 10 are arranged on the standing part of wind turbine generator by one group of bearing.This group bearing for installing needs to bear multiple load, mainly comprises the weight of generator amature 10, the bending load of bracketed part, symmetry and asymmetric wind and carries (such as level, shearing, deflection dislocation and naturally turbulent) etc.Under the effect of these load, the life-span of bearing can be affected.In addition, these load effects can cause the rotor 10 of generator or stator 20 to deform, the distortion of rotor 10 or stator 20 can cause again the change of power generator air gap 30, the change of air gap 30 and then unbalanced eccentric magnetic pull will be caused, this pulling force increases along with the increase of the inhomogeneities of air gap 30, also can affect the performance of generator further, reduce the life-span comprising the parts such as stator 20, rotor 10 and bearing.Therefore, in the design of direct-drive aerogenerator, the maintenance of power generator air gap 30 is critical technical problems.
The method of the maintenance air gap of current routine comprises the rigidity increasing whole generator system, such as, improve the pretension of bearing, increase the thickness of back shaft, improve the rigidity of stator or rotor field spider, the rigidity improving back shaft and spring bearing etc.But the application of these methods means the increase of the weight of generating set, manufacture and cost of transportation is made sharply to increase.
Utility model content
Embodiment of the present utility model provides a kind of generator and wind turbine generator, to solve the problem of the generator performance difference that generator non-uniform air-gap in running causes.
For achieving the above object, embodiment of the present utility model provides a kind of generator, comprise rotor, stator, and along the air gap that the radial direction of generator is formed between rotor and stator, generator also comprises: the first air gap control assembly, be arranged on rotor, and the first air gap control assembly has the first magnetic pole; Interstice control assembly, is arranged on stator, and interstice control assembly has the second magnetic pole, and toward each other, and polarity is identical for the first magnetic pole and the second magnetic pole.
Further, the first magnetic pole is that circular and along rotor circumference is arranged, and the second magnetic pole is that circular and along stator circumference is arranged; Or a magnetic pole in the first magnetic pole and the second magnetic pole is multiple, and arranges along the carrier uniform intervals at place, another magnetic pole in the first magnetic pole and the second magnetic pole is that circular and along place carrier circumference is arranged.
Further, the first air gap control assembly is arranged on the end face of rotor, and interstice control assembly is arranged on the end face of stator, and corresponding with the first air gap control assembly along the radial direction of generator.
Further, the end face of rotor is provided with the rotor-end cover plate radially extended, stator is fixedly installed additional tie members, the first air gap control assembly is arranged on rotor-end cover plate, and interstice control assembly is arranged on additional tie members.
Further, the rotor of generator is set in outside stator, or the rotor of generator is located in stator.
Further, the first air gap control assembly comprises the first permanent magnet, and interstice control assembly comprises the second permanent magnet.
Further, the first air gap control assembly and/or interstice control assembly comprise electromagnet.
Further, the gap measurement transducer that generator also comprises control unit and is electrically connected with control unit, control unit is electrically connected with electromagnet and according to the electric current that the detection Data Control electromagnet of gap measurement transducer loads.
Further, the first air gap control assembly and interstice control assembly form air gap control part, and air gap control part is one or at least two.
Further, when air gap control part is at least two, along the axis of generator, each air gap control part sets gradually.
According to another aspect of the present utility model, provide a kind of wind turbine generator, it comprises above-mentioned generator.
Further, wind turbine generator also comprises impeller, and impeller is connected with generator, and drives the rotor turns of generator.
The generator of embodiment of the present utility model by increasing magnet on stators and rotators, and make magnet polarity toward each other identical, make to produce repulsion between pair of magnets, when air gap changes, this repulsion provides discontiguous support force for rotor and stator, effectively to keep the air gap between rotor and stator, make it stable and uniform, and then improve electric property and the mechanical performance of motor.
Accompanying drawing explanation
Fig. 1 is the structural representation of wind turbine generator of the prior art;
Fig. 2 is the enlarged drawing at the A place in Fig. 1;
Fig. 3 is the partial structurtes schematic diagram of the generator of the first embodiment of the present utility model;
Fig. 4 is the structural representation with the generator of multiple air gap control part of the first embodiment of the present utility model;
Fig. 5 is the partial structurtes schematic diagram of the generator of the second embodiment of the present utility model;
Fig. 6 is the partial structurtes schematic diagram of the generator of the 3rd embodiment of the present utility model.
Description of reference numerals:
10, rotor; 11, rotor-end cover plate; 20, stator; 21, additional tie members; 30, air gap; 40, the first air gap control assembly; 41, the first magnetic pole; 50, interstice control assembly; 51, the second magnetic pole; 61, gap measurement transducer; 70, generator; 80, impeller; 90, cabin; 99, air gap control part.
Embodiment
Below in conjunction with accompanying drawing, the generator of the utility model embodiment and wind turbine generator are described in detail.
Embodiment one
It should be noted that, the generator of the present embodiment can be outer rotor generator, and namely rotor 10 is set in outside stator 20; Generator also can be external stator generator, and namely rotor 10 is located in stator 20.
As shown in Figure 3, generator comprises rotor 10, stator 20, and along the air gap 30 that the radial direction of generator is formed between rotor 10 and stator 20.In the present embodiment, generator also comprises the first air gap control assembly 40 and interstice control assembly 50.First air gap control assembly 40 is arranged at (when rotor 10 generation moves radially, the first air gap control assembly 40 moves thereupon) on rotor 10, and the first air gap control assembly 40 has the first magnetic pole 41.Interstice control assembly 50 is arranged on stator 20 (stator 20 produce move radially time, interstice control assembly 50 moves thereupon), and interstice control assembly 50 has the second magnetic pole 51, first magnetic pole 41 and the second magnetic pole 51 toward each other, and polarity identical (N pole can be all or be all S pole).
When the stator 20 of generator and rotor 10 make air gap 30 between the two change because of stand under load problem, the part that air gap 30 reduces certainly will be there is, correspondingly, distance between first magnetic pole 41 of the first air gap control assembly 40 and the second magnetic pole 51 of interstice control assembly 50 reduces, because both polarity are identical, repulsion is between the two increased, and this repulsion provides a kind of contactless support for stator 20 and rotor 10, effectively keeps air gap.
In the present embodiment, the principle of this generator maintenance air gap is: by arranging the first magnetic pole 41 on rotor 10, stator 20 arranges second magnetic pole 51 identical with the first magnetic pole 41 polarity, utilize the principle of two magnetic pole two like magnetic poles repel each others, for providing touchless support force between rotor 10 and stator 20, even to ensure air gap 30 between the two.Particularly, change at the air gap 30 of generator, when the spacing of stator 20 and rotor 10 is diminished, the repulsion of increase between the first magnetic pole 41 and the second magnetic pole 51, can be produced, thus provide a kind of touchless support for stator 20 and rotor 10, can effectively keep air gap 30.
Particularly, in the present embodiment, the first magnetic pole 41 is that circular and along rotor 10 circumference is arranged, and the second magnetic pole 51 is that circular and along stator 20 circumference is arranged, and such first magnetic pole 41 and the cooperation of the second magnetic pole 51 can keep air gap 30 even in the circumferential.
In other embodiments, a magnetic pole in the first magnetic pole 41 and the second magnetic pole 51 is multiple, and arranges along the carrier uniform intervals at place, and another magnetic pole in the first magnetic pole 41 and the second magnetic pole 51 is that circular and along place carrier circumference is arranged.Above-mentioned carrier refers to the carrier at multiple magnetic pole place, i.e. stator 20 or rotor 10.
Such as, if the first magnetic pole 41 is multiple, and arrange along the circumferential uniform intervals of rotor 10, then the second magnetic pole 51 is circular and is arranged on accordingly on stator 20 with the first magnetic pole 41.If the second magnetic pole 51 is multiple, and along stator 20 circumference all and interval arrange, then the first magnetic pole 41 is for circular and be arranged on accordingly on rotor 10 with the second magnetic pole 51.Can not limit the shape of the first magnetic pole 41 or the second magnetic pole 51 like this, it can be circular arc or other any shape, can save material simultaneously.
As shown in Figure 3, in the present embodiment, the first air gap control assembly 40 comprises the first permanent magnet, and interstice control assembly 50 comprises the second permanent magnet.First permanent magnet is fixedly installed on the end face of rotor 10, and the second permanent magnet is fixedly installed on the end face of stator 20.This mode is convenient to processing and is installed, and production cost is low.The fixed form of the first permanent magnet and the second permanent magnet can be bonding, also namely the first permanent magnet and the second permanent magnet is bonded on the end face of corresponding rotor 10 and stator 20 by bonded adhesives.Or the first permanent magnet can first be fixed in holder, then holder is fixed on the end face of rotor 10, in like manner the second permanent magnet is fixed on the end face of stator 20.
In the present embodiment, the first air gap control assembly 40 and interstice control assembly 50 form air gap control part 99, and air gap control part 99 is one or at least two.
As shown in Figure 4, preferably, in order to make the stressed more balanced of rotor 10 and stator 20, air gap control part 99 is at least two, and along the axis of motor, each air gap control part 99 sets gradually (each air gap control part 99 can be arranged at interval successively, also can not interval arrange).Can ensure that the where of no matter rotor 10 and/or stator 20 axial direction produces skew or deformation like this, air gap control part 99 all can form effective support, like this better effects if of the uniformity of guarantee air gap 30.
According to another aspect of the present utility model, provide a kind of wind turbine generator, it comprises above-mentioned generator.This wind turbine generator adopts above-mentioned generator, effectively can ensure that the air gap of generator is even, and then ensure electrical characteristic and the mechanical property of generator, can reduce the intensity of bearing etc. simultaneously, and then reduce costs.
Wind turbine generator also comprises impeller and cabin, and impeller is connected with generator, and drives the rotor 10 of generator to rotate, and cabin is for installing generator and other control appliance etc.
Embodiment two
As shown in Figure 5, in the present embodiment, except the first air gap control assembly 40 and interstice control assembly 50 setting position and different from the connected mode of corresponding rotor 10 and stator 20 except, other is all consistent with embodiment one, does not repeat them here.
Particularly, the end face of rotor 10 is provided with the rotor-end cover plate 11 radially extended, to increase the rigidity of rotor 10, correspondingly, stator 20 is fixedly installed additional tie members 21, additional tie members 21 is L-type, and it has the vertical section that the radial direction along generator extends, rotor-end cover plate 11 is corresponding diametrically with this vertical section, and has interval between the two.First permanent magnet of the first air gap control assembly 40 be arranged on rotor-end cover plate 11 towards on the end face of vertical section, second permanent magnet of interstice control assembly 50 be arranged on vertical section towards on the end face of rotor-end cover plate 11, and the first permanent magnet is identical near magnetic pole (i.e. the second magnetic pole 51) polarity of the first permanent magnet with the second permanent magnet near the magnetic pole (i.e. the first magnetic pole 41) of the second permanent magnet.
Like this when rotor 10 or stator 20 move, the rotor-end cover plate 11 on it or vertical section can be driven to move, and then make a part of first permanent magnet and the second permanent magnet close to each other, produce and stop the repulsion contrary with this moving direction, to reduce the change of air gap 30 to the full extent, keep the uniformity of air gap 30.
Embodiment three
As shown in Figure 6, in the present embodiment, except the first air gap control assembly 40 and/or interstice control assembly 50 comprise except electromagnet, other structure, setting position and principle are all identical with embodiment two, do not repeat them here.
Particularly, in the present embodiment, be arranged on rotor-end cover plate 11 for permanent magnet, being arranged on, the vertical section of additional tie members 21 is electromagnet.Certainly, permanent magnet can be set directly on the end face of rotor 10, and electromagnet can be set directly on the end face of stator 20.In other embodiments, also on rotor-end cover plate 11 and vertical section, all electromagnet can be set.
Preferably, because the magnetic force of electromagnet can change by changing the size of electric current, it is made to have good controllability, in order to the applicability and controllability that make generator are better, the gap measurement transducer 61 that generator also comprises control unit (not shown) and is electrically connected with control unit.Gap measurement transducer 61 can be range sensor, for detecting the size of air gap 30, and output detections data.Control unit is electrically connected with electromagnet and air gap detecting sensor 61 and according to the electric current that the detection Data Control electromagnet of gap measurement transducer 61 loads, to control the size of the repulsion that it produces, can realizes the real-time control to air gap 30 thus.
Generator of the present utility model and wind turbine generator have following effect:
By arranging magnet on stators and rotators, relying on the repulsion between magnet, realizing supporting the non-contact type of stators and rotators, contribute to like this keeping the relatively stable of the air gap of generator, improve electric property and the mechanical performance of generator.
Air gap is kept owing to adopting magnet, reduce the requirement to stators and rotators rigidity, significantly can reduce the quality of structure, the cost of effective reduction stators and rotators, and then the cost of generator can be reduced, the load that base bearing bears can be reduced in addition, the cost of bearing can be reduced, improve the life-span of bearing.
In addition, the repulsion between magnet is the radial direction along generator, thus ensures to have an impact to the rotation of generator, can not increase rotational resistance.
The above; be only embodiment of the present utility model; but protection range of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; change can be expected easily or replace, all should be encompassed within protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range of described claim.
Claims (12)
1. a generator, comprise rotor (10), stator (20), and along the air gap (30) that the radial direction of described generator is formed between described rotor (10) and described stator (20), it is characterized in that, described generator also comprises:
First air gap control assembly (40), is arranged on described rotor (10), and described first air gap control assembly (40) has the first magnetic pole (41);
Interstice control assembly (50), be arranged on described stator (20), and described interstice control assembly (50) has the second magnetic pole (51), toward each other, and polarity is identical for described first magnetic pole (41) and described second magnetic pole (51).
2. generator according to claim 1, is characterized in that,
Described first magnetic pole (41) is that circular and along described rotor (10) circumference is arranged, and described second magnetic pole (51) is that circular and along described stator (20) circumference is arranged; Or
A magnetic pole in described first magnetic pole (41) and described second magnetic pole (51) is multiple, and arrange along the carrier uniform intervals at place, another magnetic pole in described first magnetic pole (41) and described second magnetic pole (51) is that circular and along place carrier circumference is arranged.
3. generator according to claim 1, it is characterized in that, described first air gap control assembly (40) is arranged on the end face of described rotor (10), described interstice control assembly (50) is arranged on the end face of described stator (20), and corresponding with described first air gap control assembly (40) along the radial direction of described generator.
4. generator according to claim 1, it is characterized in that, the end face of described rotor (10) is provided with the rotor-end cover plate (11) radially extended, described stator (20) is fixedly installed additional tie members (21), described first air gap control assembly (40) is arranged on described rotor-end cover plate (11), and described interstice control assembly (50) is arranged on described additional tie members (21).
5. generator according to claim 1, it is characterized in that, the rotor (10) of described generator is set in described stator (20) outward, or the rotor of described generator (10) is located in described stator (20).
6. generator according to any one of claim 1 to 5, is characterized in that, described first air gap control assembly (40) comprises the first permanent magnet, and described interstice control assembly (50) comprises the second permanent magnet.
7. generator according to any one of claim 1 to 5, is characterized in that, described first air gap control assembly (40) and/or described interstice control assembly (50) comprise electromagnet.
8. generator according to claim 7, it is characterized in that, the gap measurement transducer (61) that described generator also comprises control unit and is electrically connected with described control unit, described control unit is electrically connected with described electromagnet and the electric current that electromagnet according to the detection Data Control of described gap measurement transducer (61) loads.
9. generator according to claim 1, it is characterized in that, described first air gap control assembly (40) and described interstice control assembly (50) form air gap control part (99), and described air gap control part (99) is one or at least two.
10. generator according to claim 9, is characterized in that, when described air gap control part (99) is at least two, along the axis of described generator, each described air gap control part (99) sets gradually.
11. 1 kinds of wind turbine generator, is characterized in that, comprise the generator according to any one of claim 1 to 10.
12. wind turbine generator according to claim 11, it is characterized in that, described wind turbine generator also comprises impeller, described impeller is connected with described generator, and drives the rotor turns of described generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520764167.5U CN205029443U (en) | 2015-09-29 | 2015-09-29 | Generator and wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520764167.5U CN205029443U (en) | 2015-09-29 | 2015-09-29 | Generator and wind generating set |
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| Publication Number | Publication Date |
|---|---|
| CN205029443U true CN205029443U (en) | 2016-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520764167.5U Active CN205029443U (en) | 2015-09-29 | 2015-09-29 | Generator and wind generating set |
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| CN (1) | CN205029443U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105226848A (en) * | 2015-09-29 | 2016-01-06 | 北京金风科创风电设备有限公司 | generator and wind generating set |
| CN106677993A (en) * | 2016-12-29 | 2017-05-17 | 江苏金风科技有限公司 | Device and method for rotating rotor of wind turbine generator system |
-
2015
- 2015-09-29 CN CN201520764167.5U patent/CN205029443U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105226848A (en) * | 2015-09-29 | 2016-01-06 | 北京金风科创风电设备有限公司 | generator and wind generating set |
| WO2017054675A1 (en) * | 2015-09-29 | 2017-04-06 | 北京金风科创风电设备有限公司 | Electric generator and wind power generator set |
| CN106677993A (en) * | 2016-12-29 | 2017-05-17 | 江苏金风科技有限公司 | Device and method for rotating rotor of wind turbine generator system |
| CN106677993B (en) * | 2016-12-29 | 2019-02-12 | 江苏金风科技有限公司 | Device and method for rotary wind power generator group rotor |
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