CN1805244A - High-capacity direct-driving multi-layer stator/rotor permanent magnet wind power generator - Google Patents
High-capacity direct-driving multi-layer stator/rotor permanent magnet wind power generator Download PDFInfo
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- CN1805244A CN1805244A CNA2006100378453A CN200610037845A CN1805244A CN 1805244 A CN1805244 A CN 1805244A CN A2006100378453 A CNA2006100378453 A CN A2006100378453A CN 200610037845 A CN200610037845 A CN 200610037845A CN 1805244 A CN1805244 A CN 1805244A
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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
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- 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
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Abstract
The invention relates to a large capacity direct-drive multilayer fixed-rotor permanent magnetic wind generator, which is formed by multilayer stator and relative multilayer rotor. Wherein, the stator of each layer comprises the outer stator (1) and the outer stator (2) which are individually mounted at two sides of stator support ring (10); the multilayer stator support ring is fixed on the stator fixing support (6); the rotor iron core ring outer wall permanent magnet (4) and rotor iron ring inner wall permanent magnet (5) of each layer rotor are individually mounted on two sides of rotor iron core ring (3); the rotor iron core ring is fixed on the rotor fixing support (7); the center of rotor fixing support is fixed on the rotational axle (8) whose one end via the bearing (9) is connected to the rotor fixing support (6); the rotor iron core ring outer wall permanent magnet (4) and the rotor iron core ring inner wall permanent magnet (5) with opposite poles are intercrossed distributed on the inner and outer walls of each layer rotor iron core ring (3). The invention avoids the gear box, improve the output voltage and system efficiency, and reduce the whole cost.
Description
Technical field
The present invention relates to a kind of high-capacity direct and connect driving multi-layer stator/rotor permanent magnet wind power generator, belong to the technical field that generator is made.
Background technology
Wind energy is as a kind of regenerative resource of cleaning, and along with technology is progressively ripe, operating cost from now on can be lower than water power and thermoelectricity, and development prospect is boundless.Wind-driven generator is a vital core link in the wind energy development.The rotating speed of large-scale wind turbine is low to moderate tens to be changeed even tens commentaries on classics, so have to by means of the raising speed gear box, could send the alternating current of power frequency by the generator of ordinary rotational speed.Because blower fan is installed in tens meters, open-air high-altitude, stand heat severe winter, the environmental condition harshness, raising speed gear box operating mode is harsh, cost is high, the maintaining workload is big, be overload and the higher parts of premature damage rate in the present MW grade wind driven generator unit, become the bottleneck of restriction wind power generation economy.For this reason, the multipole wind-driven generator of various countries aimings non-gear box, in addition developmental research, the multipole wind-driven generator of non-gear box becomes the first-selected up-to-date sophisticated technology of current power field.
The low cruise characteristic of wind-driven generator requires generating set to take multipole special construction, and utmost point group need be launched at the circumference of generator, and the generator diameter increases.And the desk permanent-magnet generator is limited owing to stator space, and the stator utilance is low, has limited its application in the low speed large-scale wind driven generator.Therefore, also need to study new electric machine structure to obtain higher output voltage for large-scale direct-driving type wind power generation machine, lower output current improves generator operation efficient.
Summary of the invention
Technical problem: technical problem to be solved by this invention provides that a kind of stator space is big, low speed high output voltage, low output current, the higher high-capacity direct of efficient connect driving multi-layer stator/rotor permanent magnet wind power generator.
Technical scheme: traditional generator is because diameter is less, and the motor internal space is little, and the motor space availability ratio is not high, thereby has limited the motor output voltage.In order when slowly running, to obtain higher output voltage, the present invention has adopted special electric machine structure, promptly according to the practical application needs multi-layer stator and rotor are set in bigger generator frame space, stator and common electric machine stator structure are similar, the stator winding series-fed.
High-capacity direct-driving multi-layer stator/rotor permanent magnet wind-driven generator of the present invention is made of multi-layer stator and corresponding multi-layer rotor, wherein, the layer external stator of every layer of stator and layer internal stator lay respectively at the both sides of stator support ring, and the multi-layer stator support ring is separately fixed on the stator fixed support; The rotor core ring outer wall permanent magnet of every layer of rotor and rotor core ring inwall permanent magnet lay respectively at the both sides of rotor core ring, and the rotor core ring is fixed on the rotor fixed support; The support bracket fastened center fixation of rotor is in rotating shaft, one end of rotating shaft is connected with the stator fixed support by bearing, and rotor core ring outer wall permanent magnet that polarity is different and rotor core ring inwall permanent magnet are staggered and are distributed on the inside and outside wall of each layer rotor core ring.Each layer stator armature winding is connected mutually, and promptly from the outermost layer stator, the every phase armature winding of outer stator is connected in series mutually with the corresponding head and the tail of armature winding mutually of internal layer adjacent stator.By pasting permanent magnet on rotor core ring inside and outside wall, the different and formed magnetic field of staggered permanent magnet of polarity forms series circuit by adjacent layer external stator, layer internal stator and rotor core ring on the inside and outside wall.Described rotor core ring outer wall permanent magnet and rotor core ring inwall permanent magnet adopt Nd-Fe-Bo permanent magnet material to make.
Each layer stator is fixed on the stator fixed support of electric motor end cap one side, and rotor is fixed on the rotor fixed support of electric motor end cap opposite side.Suppose that motor outermost layer stator is the ground floor stator, then the odd-level stator tooth is inside, and is similar to traditional external stator, abbreviates a layer external stator as; The even level stator tooth is outside, and is similar to the conventional motors internal stator, abbreviates a layer internal stator as.Every layer of rotor by the rotor core ring, be attached to the rotor core ring outer wall permanent magnet on the rotor core ring outer wall and the rotor core ring inwall permanent magnet that is attached on the rotor core ring inwall constitutes.The rotor core ring by the rotor fixed support fixing and be connected with the rotor fixed support as a whole, and at rotor core ring inside and outside wall both sides stickup polarity different and staggered rotor core ring outer wall permanent magnet and rotor core ring inwall permanent magnet.
Suppose that N is a natural number, then the pairing stator of N layer rotor is respectively 2N-1 layer stator (i.e. layer external stator) and 2N layer stator (i.e. layer internal stator).N layer rotor is internal rotor for 2N-1 layer stator, then is external rotor for 2N layer stator.Each layer of event rotor can be considered the adjacent layer stator, i.e. a layer external stator and the shared rotor of layer internal stator.Layer external stator and layer internal stator respectively with the rotor core ring outer wall permanent magnet and the rotor core ring inwall permanent magnet correspondence of equivalent layer.
By pasting permanent magnet on rotor core ring inside and outside wall, the different and formed magnetic field of staggered permanent magnet of polarity forms series circuit by adjacent layer external stator, layer internal stator and rotor core ring etc. on the inside and outside wall, as shown in Figure 2.
Beneficial effect: because each layer stator armature windings in series connects, can obtain than the higher output voltage of common single stator rotor generator, thereby can reduce output current, reduce the armature winding footpath, reduce the loss of electric machine, improve electric efficiency.In addition,, can reduce the motor stator leakage reactance, improve air gap flux density, thereby improve the power density of motor because the motor stator groove depth reduces.
Compare with common single stator rotor motor, owing to adopt this special machines structure, under the same diameter situation, motor can obtain bigger output voltage; And under the situation of identical output voltage, can dwindle motor diameter by each layer stator armature windings in series, thus can reduce the weight and volume of unit, improve pneumatic force characteristic, obtain more wind energy.
Because generator has been realized direct driving generating, has removed the raising speed gear box that price is high and efficient is lower from, the motor stator space is big, and the utilance height can obtain bigger output voltage when low speed.Have the mechanical speed change of need not, low-speed high-efficiency, rational in infrastructure, the space availability ratio height, low cost of manufacture, motor component more tend to the characteristics of common electric machine.
Description of drawings
Fig. 1 is a high-capacity direct-driving multi-layer stator/rotor permanent magnet wind-driven generator generalized section;
Fig. 2 is a generator internal layer stator rotor magnetic circuit schematic diagram of the present invention;
Have among the above figure: layer external stator 1, layer internal stator 2, rotor core ring 3, rotor core ring outer wall permanent magnet 4, rotor core ring inwall permanent magnet 5, stator fixed support 6, rotor fixed support 7, rotating shaft 8, bearing 9, stator support ring 10.
Embodiment:
The present invention has adopted special electric machine structure, promptly according to the practical application needs multi-layer stator and rotor is set in bigger generator frame space, and the stator structure of stator and common external rotor inner rotor motor is similar.Each layer stator is fixed on the stator fixed support 6 of electric motor end cap one side, and rotor is fixed on the rotor fixed support 7 of electric motor end cap opposite side.Suppose that motor outermost layer stator is the ground floor stator, then the odd-level stator tooth is inside, and is similar to traditional external stator, abbreviates layer external stator 1 as; The even level stator tooth is outside, and is similar to the conventional motors internal stator, abbreviates layer internal stator 2 as.Every layer of rotor is by rotor core ring 3 and be attached to the rotor core ring outer wall permanent magnet 4 on rotor core ring 3 outer walls and the rotor core ring inwall permanent magnet 5 that is attached on rotor core ring 3 inwalls constitutes.
Suppose that N is a natural number, then the pairing stator of N layer rotor is respectively 2N-1 layer stator (i.e. layer external stator 1) and 2N layer stator (i.e. layer internal stator 2).N layer rotor is internal rotor for 2N-1 layer stator, then is external rotor for 2N layer stator.So each layer rotor can be considered the adjacent layer stator, i.e. the common rotor of layer external stator 1 and layer internal stator 2.Layer external stator 1 and layer internal stator 2 respectively with the rotor core ring outer wall permanent magnet 4 and rotor core ring inwall permanent magnet 5 correspondences of equivalent layer.
By pasting permanent magnet on rotor core ring 3 inside and outside walls, the different and formed magnetic field of staggered permanent magnet of polarity forms series circuit by adjacent layer external stator 1, layer internal stator 2 and rotor core ring 3 etc. on the inside and outside wall, as shown in Figure 2.This magnetic flux path is: rotor core ring outer wall permanent magnet 4, layer external stator 1, adjacent rotors ring unshakable in one's determination outer wall permanent magnet 4, rotor core ring 3, rotor core ring inwall permanent magnet 5, layer internal stator 2, adjacent rotors ring unshakable in one's determination inwall permanent magnet 5, rotor core ring 3, get back to rotor core ring outer wall permanent magnet 4 at last.
In addition, consider, select to have the material of the Nd-Fe-Bo permanent magnet material of higher HCJ as electric machine rotor iron core ring outer wall permanent magnet 4 and rotor core ring inwall permanent magnet 5 from improving motor gas-gap magnetic thermal stability close and magnet steel.
Each layer stator armature windings in series connects, and promptly from the outermost layer stator, the every phase armature winding of outer stator is connected in series mutually with the corresponding head and the tail of armature winding mutually of internal layer adjacent stator, thereby can obtain the output voltage higher than conventional electric generators.At last, use a total power frequency converter that the wind-powered electricity generation of frequency change is transformed to the power frequency electricity and send into electrical network.
Claims (4)
1. high-capacity direct-driving multi-layer stator/rotor permanent magnet wind-driven generator, it is characterized in that this generator is made of multi-layer stator and corresponding multi-layer rotor, wherein, the layer external stator (1) of every layer of stator and layer internal stator (2) lay respectively at the both sides of stator support ring (10), and multi-layer stator support ring (10) is separately fixed on the stator fixed support (6); The rotor core ring outer wall permanent magnet (4) of every layer of rotor and rotor core ring inwall permanent magnet (5) lay respectively at the both sides of rotor core ring (3), and rotor core ring (3) is fixed on the rotor fixed support (7); The center fixation of rotor fixed support (7) is in rotating shaft (8), one end of rotating shaft (8) is connected with stator fixed support (6) by bearing (9), and rotor core ring outer wall permanent magnet (4) that polarity is different and rotor core ring inwall permanent magnet (5) are staggered and are distributed on the inside and outside wall of each layer rotor core ring (3).
2. high-capacity direct-driving multi-layer stator/rotor permanent magnet wind-driven generator according to claim 1, it is characterized in that each layer stator armature winding connects mutually, promptly from the outermost layer stator, the every phase armature winding of outer stator is connected in series mutually with the corresponding head and the tail of armature winding mutually of internal layer adjacent stator.
3. high-capacity direct-driving multi-layer stator/rotor permanent magnet wind-driven generator according to claim 1, it is characterized in that by on rotor core ring (3) inside and outside wall, pasting permanent magnet the different and formed magnetic field of staggered permanent magnet of polarity is by adjacent layer external stator (1), layer internal stator (2) and rotor core ring (3) formation series circuit on the inside and outside wall.
4. high-capacity direct-driving multi-layer stator/rotor permanent magnet wind-driven generator according to claim 1 is characterized in that described rotor core ring outer wall permanent magnet (4) and rotor core ring inwall permanent magnet (5) adopt Nd-Fe-Bo permanent magnet material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100378453A CN100350716C (en) | 2006-01-17 | 2006-01-17 | High-capacity direct-driving multi-layer stator/rotor permanent magnet wind power generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100378453A CN100350716C (en) | 2006-01-17 | 2006-01-17 | High-capacity direct-driving multi-layer stator/rotor permanent magnet wind power generator |
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| CN1805244A true CN1805244A (en) | 2006-07-19 |
| CN100350716C CN100350716C (en) | 2007-11-21 |
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| CNB2006100378453A Expired - Fee Related CN100350716C (en) | 2006-01-17 | 2006-01-17 | High-capacity direct-driving multi-layer stator/rotor permanent magnet wind power generator |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010130112A1 (en) * | 2009-05-13 | 2010-11-18 | Li Heung Yeung | Variable two with one motor |
| CN101572452B (en) * | 2008-04-28 | 2012-12-19 | 宁波唯英能源科技有限公司 | Double-layer rotor aerogenerator |
| CN111852779A (en) * | 2020-07-19 | 2020-10-30 | 李维斌 | Typhoon generator set |
| CN113659775A (en) * | 2021-08-16 | 2021-11-16 | 固高派动（东莞）智能科技有限公司 | Coaxial multilayer direct-drive motor and transmission control system thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1377116A (en) * | 2001-03-23 | 2002-10-30 | 刘粤荣 | Rotary motor composed of rotor and stator with multi-layer structure and its usage |
| CN2529435Y (en) * | 2002-03-20 | 2003-01-01 | 朱铁钢 | Radial multilayer stator, rotor electric machine |
| CN1175544C (en) * | 2002-08-22 | 2004-11-10 | 哈尔滨工业大学 | Multiple air gap motor |
| CN2640115Y (en) * | 2003-06-12 | 2004-09-08 | 哈尔滨工业大学 | Direct drive mixed reluctance electric machine |
| CN2865122Y (en) * | 2006-01-20 | 2007-01-31 | 东南大学 | Direct-driving permanent-magnetic wind-driven generator |
-
2006
- 2006-01-17 CN CNB2006100378453A patent/CN100350716C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101572452B (en) * | 2008-04-28 | 2012-12-19 | 宁波唯英能源科技有限公司 | Double-layer rotor aerogenerator |
| WO2010130112A1 (en) * | 2009-05-13 | 2010-11-18 | Li Heung Yeung | Variable two with one motor |
| CN111852779A (en) * | 2020-07-19 | 2020-10-30 | 李维斌 | Typhoon generator set |
| CN113659775A (en) * | 2021-08-16 | 2021-11-16 | 固高派动（东莞）智能科技有限公司 | Coaxial multilayer direct-drive motor and transmission control system thereof |
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| CN100350716C (en) | 2007-11-21 |
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Granted publication date: 20071121 Termination date: 20140117 |