CN202997875U - Double-bearing supporting double-stator switch magnetic resistance aerogenerator and set system thereof - Google Patents
Double-bearing supporting double-stator switch magnetic resistance aerogenerator and set system thereof Download PDFInfo
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- CN202997875U CN202997875U CN2012207289837U CN201220728983U CN202997875U CN 202997875 U CN202997875 U CN 202997875U CN 2012207289837 U CN2012207289837 U CN 2012207289837U CN 201220728983 U CN201220728983 U CN 201220728983U CN 202997875 U CN202997875 U CN 202997875U
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Abstract
The utility model relates to a double-bearing supporting double-stator switch magnetic resistance aerogenerator and a set system thereof. A rotor of the aerogenerator comprises a non-magnetic-conductive material layer, and an external rotor magnetic pole and an internal rotor magnetic pole arranged on the two sides of the non-magnetic-conductive material layer. The floating end of the rotor is supported inside the housing of the generator through rotor centring bearings. The other end of the rotor is fixedly connected with a main shaft through a rotor rotating disk and a rotor body. The system comprises the above-mentioned double-bearing supporting double-stator switch magnetic resistance aerogenerator, and a power converter, a control system, an inverter and a load. The double-bearing supporting double-stator switch magnetic resistance aerogenerator is connected with the power converter which is respectively connected with the control system, the inverter and the load. Compared with a single-stator switch magnetic resistance generator, the aerogenerator enables an increased output power per unit volume. The volume and the weight of the aerogenerator are thus reduced. The cost is further lowered.
Description
Technical field
The utility model relates to the wind power technology field, particularly relates to a kind of duplex bearing and supports two stator switch magnetic resistance wind-driven generators and machine set system thereof.
Background technology
Development along with Wind Power Generation Industry, wind power technology is constantly upgraded, is regenerated, main manifestations is: single-machine capacity raising, wind-powered electricity generation unit performance improvement, wind energy utilization raising, wind power cost reduction, aerogenerator unit safe and system reliability raising etc., simultaneously, the electric field operation controls, predicts that dispatching technique is also constantly perfect.Utilize offshore wind energy resource, development marine wind electric field construction technique, the large-scale offshore wind farm machine of development consist of the emphasis of technical development.
Switch reluctance generator is applied to wind power system, is the important breakthrough that switched reluctance machines is used at new energy field.Switch reluctance generator is simple in structure, brushless on rotor, without winding, without permanent magnet, be equivalent to a current source during operation, like this in certain range of speeds, output end voltage can not change along with the variation of rotating speed, obviously, the such variable-speed generator of switch reluctance generator can improve the utilization ratio of wind energy.Because switch reluctance generator has above characteristic, can realize higher generating efficiency under wind-force directly drives, thereby save gear box, make whole power generation system structure more succinct, reliable, this is the development trend of wind generator system just also.In the switch reluctance generator running, controllable parameter is many, as turn-on angle, the pass angle of rupture etc., can realize easily the control strategy of more complicated, controls flexibly output dc voltage and electric current.Consider from the characteristics of wind power generation, at first wind generator system will be converted to the wind energy that constantly changes the alternating current of frequency, voltage constant or the direct current of voltage constant, and wants the high efficiency above-mentioned power conversion that realizes, to reduce costs.With this, the switched reluctance machines wind generator system is that application prospect is arranged very much aspect wind power generation.
Yet, increase along with power of motor, the problems such as switched reluctance machines is compared with magneto, and the low effective rate of utilization with material of efficient that also exists system is low, vibration and noise large, power factor is lower have affected its use popularization in the direct-drive wind power generation field to a certain extent.
This shows, the traditional switch reluctance generator also exists obvious deficiency and defective in structure, use, demand further improvement urgently, therefore how to found a kind of raising power of motor density and effective stock utilization, improve the power factor of motor, reduce weight and the cost of motor, the duplex bearing that reduces vibration and noise supports two stator switch magnetic resistance wind-driven generators and machine set system thereof, one of real important topic that belongs to current research and development.
The utility model content
The purpose of this utility model is to provide a kind of duplex bearing and supports two stator switch magnetic resistance wind-driven generators and machine set system thereof, can improve power of motor density, improve the power factor of motor, reduce weight and the cost of motor, reduce noise and vibration, thereby overcome the deficiencies in the prior art.
For solving the problems of the technologies described above, a kind of duplex bearing of the utility model supports two stator switch magnetic resistance wind-driven generators, comprise wheel hub, main shaft, generator casing, external stator, rotor, rotor rotating disk, rotor block, internal stator and rotor alignment bearing, wherein: rotor comprises the non-magnet material layer, and the external rotor magnetic poles and the internal rotor magnetic pole that are arranged on non-magnet material layer both sides, the floating end of rotor is supported in generator casing by the rotor alignment bearing, and the other end is fixedly connected with main shaft by rotor rotating disk, rotor block.
As further improvement of the utility model, also comprise forward flange, fore bearing, internal stator support, rear flange and rear bearing, wherein: the inner ring sleeve of fore bearing and rear bearing and is fixedly connected with rotor block on main shaft; The front end of main shaft is fixedly connected with wheel hub; The outside of forward flange is fixedly connected with the generator casing front end, and the inboard is fixedly connected with the outer shroud of fore bearing; The outside of rear flange is fixedly connected with the rear end of generator casing, and the inboard is fixedly connected with the outer shroud of rear bearing; External stator is fixedly connected with the generator casing inboard, and internal stator is fixedly connected with rear flange by the internal stator support; Rotor be arranged on external stator and internal stator radially between, the rotor alignment bearing is arranged on rear flange, and the floating end by rotor rear support support rotor.
Described fore bearing and rear bearing all adopt self-aligning bearing.
Described rotor alignment bearing adopts deep groove ball bearing.
Described internal stator and external stator include stator core and stator winding; The stator core of described inside and outside stator is salient-pole structure; The stator winding of described inside and outside stator is whole square winding.
The stator core of described inside and outside stator is arranged in same groove, is a phase winding.
Described non-magnet material layer is the cast aluminium structure.
In addition, the utility model also provides a kind of wind-driven generator group system, comprise that above-mentioned duplex bearing supports two stator switch magnetic resistance wind-driven generators, and power inverter, control system, inverter and load, wherein: duplex bearing supports two stator switch magnetic resistance wind-driven generators and is connected with power inverter, and power inverter is connected with control system, inverter and load respectively.
As further improvement of the utility model, described control system comprises drive circuit, over-voltage over-current protection circuit, voltage and current detection circuit, rotor position detection circuit and single-chip microcomputer.
Also be parallel with dc-battery between described power inverter and inverter and load, described control system also is connected with accessory power supply and dc-battery.
After adopting above design, the utility model has following beneficial effect compared with the prior art:
1, the utility model duplex bearing supports two stator switch magnetic resistance wind-driven generators for single stator switch magnetic resistance generator, and the power output of motor unit volume increases, thereby has reduced motor volume and weight, has both reduced cost, has facilitated again transportation;
2, the utility model duplex bearing supports two stator switch magnetic resistance wind-driven generators and adopts cast-aluminum rotor structure, power stage density and effective stock utilization of magnetic resistant electric motor with double stator switch have been improved, improved the power factor of magnetic resistant electric motor with double stator switch, owing to having adopted and cast-aluminum rotor like the asynchronous squirrel-cage electric machinery, greatly reduce weight and the cost of motor, and reduced the vibration and noise of switch reluctance generator;
3, the kind of drive of duplex bearing support is adopted in driving-chain design of the present utility model, has greatly simplified drive mechanism, has significantly reduced complete machine weight simultaneously;
4, the utility model has added a conventional deep groove ball bearing in the generator amature rear end, and this bearing can guarantee concentric at any running status lower rotor part and stator of generator.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Description of drawings
Above-mentioned is only the general introduction of technical solutions of the utility model, and for can clearer understanding the utility model, the utility model is described in further detail below in conjunction with accompanying drawing and embodiment.
Fig. 1 is that the utility model duplex bearing supports two stator switch magnetic resistance wind-driven generator structure schematic diagrames.
Fig. 2 is the stator of the two stator switch magnetic resistance wind-driven generators of the utility model duplex bearing support, the cross section structure schematic diagram of rotor.
Fig. 3 is the composition schematic diagram that the utility model duplex bearing supports two stator switch magnetic resistance wind-driven generator machine set systems.
Embodiment
See also shown in Figure 1ly, a kind of duplex bearing of the utility model supports two stator switch magnetic resistance wind-driven generators, mainly comprises wheel hub 1, main shaft 2, external stator 7, rotor 8, internal stator 9, generator casing 10, rotor rotating disk 15 and rotor alignment bearing 24.
Further, above-mentioned parts fit together by forward flange 5, fore bearing 4, internal stator support 16, lock sleeve 18, rotor press plate 22, rear flange 11, rear bearing 25, fore bearing outer end cap 3, fore bearing inner end cap 6, frame 12, fore bearing outer shaft 13, fore bearing internal axle sleeve 14, rear bearing internal axle sleeve 19, rear bearing inner bearing end cap 20, rear bearing outer shaft 21, rotor rear support 23, rear bearing outer bearing end cap 26, locking nut 27, slip ring 28 etc.
Now support two stator switch magnetic resistance hub of wind power generator setting positions as the front end of generator take the utility model duplex bearing, the other end of generator is the rear end, and the utility model is described.
Rotor rear support 23 is set on rotor alignment bearing 24, and rotor alignment bearing 24 is set on the section of stretching out of rear flange 11, and rotor rear support 23 is arranged on internal stator support 16 middle with rear flange 11 after being set with rotor alignment bearing 24.Rotor alignment bearing 24 is used for guaranteeing that rotor 8 rear ends are concentric with inside and outside stator, and it preferably adopts the deep groove ball bearing of routine.Internal stator support 16 is bolted to connection with the section of stretching out of rear flange 11.
Further, also fix suit lock sleeve 18 on rotor block 17, it is arranged on the inboard of rear bearing internal axle sleeve 19, is used for axial adjustment.
Fore bearing outer shaft 13 and fore bearing internal axle sleeve 14 are positioned at the both sides of fore bearing 4, and the interior ring of fore bearing 4 is arranged on main shaft 2 by fore bearing outer shaft 13, fore bearing internal axle sleeve 14, and is fixedly connected with rotor block 17.Fore bearing outer end cap 3 is set on fore bearing outer shaft 13, and fore bearing inner end cap 6 is set on fore bearing internal axle sleeve 14, and the outer shroud of fore bearing 4 is fixedly connected with the inboard of forward flange with fore bearing inner end cap 6 by fore bearing outer end cap 3.
Rear bearing internal axle sleeve 19 and rear bearing outer shaft 21 are positioned at the both sides of rear bearing 25, and the interior ring of rear bearing 25 is arranged on main shaft 2 by rear bearing internal axle sleeve 19, inner bearing outer shaft 21, and is fixedly connected with rotor block 17.Rear bearing inner end cap 20 is set on rear bearing internal axle sleeve 19, rear bearing outer end cap 26 is set on rear bearing outer shaft 21, rear flange 11 is set on rear bearing 25, and the outer shroud of rear bearing 25 is bolted to connection by rear bearing inner end cap 20 and rear bearing outer end cap 26 and rear flange 11.Preferably, fore bearing 4, rear bearing 25 adopt self-aligning bearing.
Further, the rear end of main shaft 2 also is provided with rotor ring 28, and locking nut 27 is set on main shaft 2, and it is arranged on the outside of rear bearing outer shaft 21.
See also shown in Figure 2ly, duplex bearing of the present utility model supports the stator and rotor cross section structure of two stator switch magnetic resistance wind-driven generators, comprises external stator 7, rotor 8 and internal stator 9.
Wherein, external stator 7 comprises external stator core 71 and external stator winding 72; Inner-stator iron core comprises inner-stator iron core 91 and internal stator winding 92; Rotor comprises external rotor magnetic poles 81 and internal rotor magnetic pole 83 and non-magnet material layer 82.
The non-magnet material layer 82 of rotor 8 is preferably the cast aluminium structure, and external rotor magnetic poles 81 is magnetic conductive material with internal rotor magnetic pole 83.
See also shown in Figure 3, the machine set system that duplex bearing of the present utility model supports two stator switch magnetic resistance wind-driven generators comprises that above-mentioned duplex bearing supports two stator switch magnetic resistance wind-driven generators, power inverter, inverter and load and control system, also comprises dc-battery and accessory power supply.Wherein, control system comprises drive circuit, over-voltage over-current protection circuit, voltage and current detection circuit, rotor position detection circuit, single-chip microcomputer or DSP minimum system circuit etc.
Duplex bearing supports two stator switch magnetic resistance wind-driven generators and is connected with power inverter, and power inverter is connected with control system, inverter and load respectively.
Be parallel with dc-battery between power inverter and inverter and load; Dc-battery is connected with control system; The control system system is connected with power inverter; Accessory power supply is connected with control system.
Duplex bearing of the present utility model supports the double-salient-pole rotor of two stator switch magnetic resistance wind-driven generators by the wheel hub driven rotary, it is the conversion equipment of wind energy/mechanical energy, the control command that the power inverter receiving control system sends supports with duplex bearing energy storage device-dc-battery that direct current that two stator switch magnetic resistance wind-driven generators send is exported to system.
Feedback information and the outside instructions of inputting such as motor rotor position, speed and electric current that control system synthesis processing rotor position detector, electric current and voltage detector provide, the control of two stator switch magnetic resistance running status of wind generators is supported in realization to duplex bearing, control each phase winding of inside and outside stator and take turns to operate, realize that mechanical energy arrives the conversion of electric energy.
Dc-battery is the energy storage device of system; Inverter and load, the dc inverter that the two stator switch magnetic resistance wind-driven generators of duplex bearing support are sent becomes alternating current, directly supplies with AC load; Accessory power supply for control system provide ± 15V, ± multiple power supplies such as 5V.
From the above, the utility model has adopted duplex bearing simple and reliable for structure to support two stator switch magnetic resistance wind-driven generators in the wind-driven generator group system, it adopts cast-aluminum rotor simple in structure, adopted the rotor alignment bearing at the rotor floating end, weight and the cost of MW class and above switch reluctance generator group have significantly been reduced, improve performance and the reliability of switch reluctance generator, greatly improved the competitive advantage of switch reluctance generator group in the wind-powered electricity generation industry.
The above; it is only preferred embodiment of the present utility model; be not that the utility model is done any pro forma restriction, those skilled in the art utilize the technology contents of above-mentioned announcement to make a little simple modification, equivalent variations or modification, all drop in protection range of the present utility model.
Claims (10)
1. a duplex bearing supports two stator switch magnetic resistance wind-driven generators, it is characterized in that comprising wheel hub, main shaft, generator casing, external stator, rotor, rotor rotating disk, rotor block, internal stator and rotor alignment bearing, wherein:
Rotor comprises the non-magnet material layer, and the external rotor magnetic poles and the internal rotor magnetic pole that are arranged on non-magnet material layer both sides, the floating end of rotor is supported in generator casing by the rotor alignment bearing, and the other end is fixedly connected with main shaft by rotor rotating disk, rotor block.
2. duplex bearing according to claim 1 supports two stator switch magnetic resistance wind-driven generators, characterized by further comprising forward flange, fore bearing, internal stator support, rear flange and rear bearing, wherein:
The inner ring sleeve of fore bearing and rear bearing and is fixedly connected with rotor block on main shaft;
The front end of main shaft is fixedly connected with wheel hub;
The outside of forward flange is fixedly connected with the generator casing front end, and the inboard is fixedly connected with the outer shroud of fore bearing;
The outside of rear flange is fixedly connected with the rear end of generator casing, and the inboard is fixedly connected with the outer shroud of rear bearing;
External stator is fixedly connected with the generator casing inboard, and internal stator is fixedly connected with rear flange by the internal stator support;
Rotor be arranged on external stator and internal stator radially between, the rotor alignment bearing is arranged on rear flange, and the floating end by rotor rear support support rotor.
3. duplex bearing according to claim 2 supports two stator switch magnetic resistance wind-driven generators, it is characterized in that:
Described fore bearing and rear bearing all adopt self-aligning bearing.
4. duplex bearing according to claim 1 supports two stator switch magnetic resistance wind-driven generators, it is characterized in that:
Described rotor alignment bearing adopts deep groove ball bearing.
5. duplex bearing according to claim 1 supports two stator switch magnetic resistance wind-driven generators, it is characterized in that:
Described internal stator and external stator include stator core and stator winding;
The stator core of described inside and outside stator is salient-pole structure;
The stator winding of described inside and outside stator is whole square winding.
6. duplex bearing according to claim 5 supports two stator switch magnetic resistance wind-driven generators, it is characterized in that:
The stator core of described inside and outside stator is arranged in same groove, is a phase winding.
7. duplex bearing according to claim 1 supports two stator switch magnetic resistance wind-driven generators, it is characterized in that:
Described non-magnet material layer is the cast aluminium structure.
8. a wind-driven generator group system, is characterized in that comprising that in claim 1-7, the described duplex bearing of any one supports two stator switch magnetic resistance wind-driven generators, and power inverter, control system, inverter and load, wherein:
Duplex bearing supports two stator switch magnetic resistance wind-driven generators and is connected with power inverter, and power inverter is connected with control system, inverter and load respectively.
9. wind-driven generator group system according to claim 8 is characterized in that:
Described control system comprises drive circuit, over-voltage over-current protection circuit, voltage and current detection circuit, rotor position detection circuit and single-chip microcomputer.
10. wind-driven generator group system according to claim 8 is characterized in that:
Also be parallel with dc-battery between described power inverter and inverter and load, described control system also is connected with accessory power supply and dc-battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207289837U CN202997875U (en) | 2012-12-26 | 2012-12-26 | Double-bearing supporting double-stator switch magnetic resistance aerogenerator and set system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207289837U CN202997875U (en) | 2012-12-26 | 2012-12-26 | Double-bearing supporting double-stator switch magnetic resistance aerogenerator and set system thereof |
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| Publication Number | Publication Date |
|---|---|
| CN202997875U true CN202997875U (en) | 2013-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012207289837U Expired - Lifetime CN202997875U (en) | 2012-12-26 | 2012-12-26 | Double-bearing supporting double-stator switch magnetic resistance aerogenerator and set system thereof |
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| CN (1) | CN202997875U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103023245A (en) * | 2012-12-26 | 2013-04-03 | 国电联合动力技术有限公司 | Double-bearing support double-stator switch magnetic-resistance wind power generator and unit system thereof |
-
2012
- 2012-12-26 CN CN2012207289837U patent/CN202997875U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103023245A (en) * | 2012-12-26 | 2013-04-03 | 国电联合动力技术有限公司 | Double-bearing support double-stator switch magnetic-resistance wind power generator and unit system thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130612 |
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| CX01 | Expiry of patent term |