CN101494397A - Large-sized speed-changing wind power generator with embedded permanent magnet - Google Patents
Large-sized speed-changing wind power generator with embedded permanent magnet Download PDFInfo
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- CN101494397A CN101494397A CNA2008100329333A CN200810032933A CN101494397A CN 101494397 A CN101494397 A CN 101494397A CN A2008100329333 A CNA2008100329333 A CN A2008100329333A CN 200810032933 A CN200810032933 A CN 200810032933A CN 101494397 A CN101494397 A CN 101494397A
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- permanent magnet
- wind power
- power generator
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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
- 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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- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The invention relates to a permanent-magnet embedded type large-scale speed change aerogenerator and belongs to the technical field of wind power generation. The aerogenerator includes a stator, a rotor, a main shaft, a rear end cover and a front end cover. The rotor is installed on the main shaft and supported by a bearing, the rear end cover and the front end cover. The main shaft is connected with a driving shaft of a prime motor through a flange. The aerogenerator is characterized in that the surface of the rotor is a disk formed by a laminated core, the rotor comprises a rotor core, a permanent-magnet and a rotor field spider, the rotor core is piled on the rotor field spider and provided with a groove matched with the permanent-magnet which is embedded in the groove of the rotor core, and the rotor field spider is sheathed on the main shaft for transmitting torque. The permanent-magnet has convenient installation and strong anti-demagnetization capacity, can reduce the manufacture labor hour and enhance the reliability of a permanent-magnet generator.
Description
Technical field
The present invention relates to a kind of large-scale permanent-magnetic wind driven generator of grid type, specifically is a kind of large-sized speed-changing wind power generator with embedded permanent magnet, belongs to technical field of wind power generation.
Background technology
The our times various countries all attach great importance to new and renewable sources of energy.In green energy resource, wind energy is the best regenerative resource of technology maturation economic development.In the conversion process of electric energy, biological environment is not produced destruction in wind energy.Compare with the coal electricity, every 1000KW wind turbine generator can reduce the discharging of 151.52 tons of carbon dioxide, 9 tons of sulfur dioxide gas and 6 tons of CO (carbon monoxide converter) gas every year.The development wind power generation is the requirement of sustainable development.
China's " regenerative resource method " is in formal enforcement on January 1st, 2006, and this utilization to China's regenerative resource will play huge impetus with exploitation.The development wind power generation also is that additional China primary energy is under-supply, improves the effective way of China's energy resource structure, guarantee energy security.The development wind power generation, can promote China's new forms of energy and renewable energy technologies and related industry continue, fast, sound development.The development wind power generation needs strong wind power generation correlation technique for supporting, and thinks that wind energy turbine set that China develops rapidly provides novel big capacity reliable, the with low cost wind generator system that is incorporated into the power networks.
In the variable-ratio wind power system of current domestic and international operation, dual feedback wind power generation system is subjected to extensive attention, but its slewing range is restricted, can not move under the part rotating speed, and system effectiveness is affected.In recent years, the directly-drive permanent magnet wind generating system is subjected to market and pays close attention to its very wide slewing range and high system synthesis efficient.Because the generator of this unit is incorporated into the power networks by inverter, thereby unit can move on the arbitrfary point in minimum speed and the maximum speed scope, can obtain very good wind energy utilization; Simultaneously, because permanent magnet generator itself need not any electric excitation, efficient also is higher than other kind motor.These two advantages can improve wind-powered electricity generation unit annual interest greatly and use the time, obtain higher benefit.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of large-sized speed-changing wind power generator with embedded permanent magnet is provided.Permanent magnet of the present invention is easy for installation, and has stronger anti-degaussing ability, in the time of can reducing worker and strengthen the reliability of permanent magnet generator.
The present invention is achieved by the following technical solutions, the present invention includes: stator, rotor, main shaft, rear end cap, front end housing, rotor are installed on the main shaft, and rotor supports by bearing, rear end cap and front end housing; Main shaft is connected with the driving shaft of prime mover by flange.It is characterized in that: described rotor surface is the disc that laminated core forms, rotor comprises: rotor core, permanent magnet, rotor field spider, rotor core is stacked on the rotor field spider, has the groove that is complementary with permanent magnet in the rotor core, and permanent magnet is embedded in the groove of rotor core.Rotor field spider is sleeved on transfer torque on the main shaft.
Described rotor cylindrical is smooth.
The length of permanent magnet is 0.6 to 0.75 times of rotor surface distance between two poles in the described groove.
Described permanent magnet both sides respectively have one every the magnetic space.
Described every the magnetic space, wherein available non magnetic conformable material is filled, also can any filler.
The thickness of described gap bridge 211 every magnetic gap top is 1.5mm to 3mm.
Described between magnetic gap (two utmost points every magnetic gap) a radially straining beam is arranged, in order to the centrifugal force and the peripheral force of carrying permanent magnet and outer core thereof.
Permanent magnet generator of the present invention and inverter, system controller and corresponding Control Software are mixed tower tube, wind wheel, pitch-controlled system, yaw system etc., form complete Variable Speed Wind Power Generator.Be generator of the present invention, generator shaft connects mutually with wind wheel, adds respective switch and control strategy, mixes tower tube, wind wheel, pitch-controlled system, yaw system, weathercock instrument and other electric-control system, constitutes wind generator system.
Compared with prior art, advantage of the present invention is:
1. the permanent magnet installation is more convenient, is convenient to produce in batches.
2. has stronger anti-degaussing ability.Embedded structure has added hands over the axle magnetic circuit, makes the armature reaction demagnetizing field can not directly act on permanent magnet, and by the bypass of the magnetic circuit of permanent magnet surfaces institute, thereby stronger anti-degaussing ability is arranged.
3. high efficiency.Because permanent magnet is embedded in the inside of rotor silicon steel sheet, the rotor cylindrical is smooth, thereby the air gap of motor can be smaller, thereby has improved the utilance of permanent magnet.Higher magnetic loading has also improved efficiency of motor.
Description of drawings
Fig. 1 is an expression structural representation of the present invention.
Fig. 2 is a rotor cross-sectional view of the present invention.
Fig. 3 is that the local I of Fig. 2 rotor permanent magnet embedded structure is analysed and observe local enlarged diagram.
Among the figure: 1--stator, 2--rotor; The 3-main shaft, the 4--rear end cap, the 5--front end housing, the 6-flange, the 21--rotor core, 22--permanent magnet, 23--rotor field spider, 24---are every magnetic gap, and 211-passes a bridge, and 212-is straining beam radially, the 213-outer core.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated: present embodiment has provided detailed execution mode being to implement under the prerequisite with the technical solution of the present invention, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, have among the figure: the front end housing 5 of the main shaft 3 of the stator 1 of permanent magnet generator, the rotor 2 of permanent magnet generator, permanent magnet generator, permanent magnet generator rear end cap 4, permanent magnet generator, prime mover flange 6 that is connected with permanent magnet generator.Fig. 1 illustrates overall structural arrangement, and permanent magnet generator of the present invention is the integrally closed structure.
Present embodiment comprises: stator 1, rotor 2, main shaft 3, rear end cap 4, front end housing 5, rotor 2 are installed on the main shaft 3, and rotor 2 supports by bearing, rear end cap 4 and front end housing 5; Main shaft 3 is connected with the driving shaft of prime mover by flange 6.It is characterized in that: the disc that described rotor 2 surfaces form for laminated core, rotor 2 comprises: rotor core 21, permanent magnet 22, rotor field spider 23, rotor core 21 is stacked on the rotor field spider 23, have the groove that is complementary with permanent magnet in the rotor core 21, permanent magnet 22 is embedded in the groove of rotor core 21.Rotor field spider 23 is sleeved on transfer torque on the main shaft 3.
Described rotor cylindrical is smooth.
Described permanent magnet 22 both sides respectively have one every magnetic space 24.
Described every the magnetic space, wherein available non magnetic conformable material is filled, also can any filler.
The thickness of described gap bridge 211 every magnetic gap 24 tops is 1.5mm to 3mm.
Described between magnetic gap 24 (two utmost points every magnetic gap) a radially straining beam 212 is arranged, in order to the centrifugal force and the peripheral force of carrying permanent magnet 22 and outer core 213 thereof.
The stator 1 of generator is outside natural air cooled.Generator amature 2 is installed on the main shaft 3.Generator amature 2 supports by bearing, rear end cap 4 and front end housing 5.The driving shaft of prime mover is connected with generator shaft 3 by flange 6, rotor 2 rotations of drawing generator, and then in the winding of stator 1, induce the voltage generating.
As shown in Figure 2, be the rotor profiles figure of generator of the present invention.Have among the figure: rotor core 21, the permanent magnet 22 of embedding, rotor field spider 23, the main shaft 3 of permanent magnet generator.
As shown in Figure 3, have among the figure: rotor core 21, the permanent magnet 22 of embedding, between permanent magnet and rotor core every magnetic gap 24.Permanent magnet 22 is embedded in the groove that rotor core 21 leaves in advance, and 21 of rotor cores are stacked on the rotor field spider 23.Rotor field spider 23 is sleeved on transfer torque on the main shaft 3.
As shown in Figure 3, the both sides of permanent magnet respectively have one every magnetic space 24 in the groove of mosaic magnet.Wherein available non magnetic conformable material is filled, also can any filler.This interval can effectively reduce the leakage field of permanent magnet 22 sides.Thickness every the gap bridge 211 on magnetic gap 24 tops is 1.5mm to 3mm, to guarantee when enough mechanical strengths are arranged, does not make permanent magnet 22 leakage fields excessive.Two utmost points between magnetic gap 24, have one radially straining beam 212 with the centrifugal force and the peripheral force of carrying permanent magnet 22 and outer core 213 thereof.
The mosaic texture of this permanent magnet has many advantages:
1. rotor surface is the disc that laminated core forms, and the air gap between stator and rotor guarantees easily, thereby design goes up and can adopt less air gap, and reducing excitation as far as possible, thereby minimizing permanent magnet consumption reduces cost.
2. owing to have the groove that is complementary with permanent magnet in the rotor core 21, permanent magnet is easy for installation, and can not repel the trouble that causes installation because of there being the polylith permanent magnet to produce under the homopolarity.
3. hand over the axle magnetic circuit that certain magnetic conductivity is arranged.When the generator loading electric current produced demagnetizing effect to air-gap field, the part of demagnetizing field had played the effect of certain protection permanent magnet by handing over the conducting of axle magnetic circuit.Thereby anti-degaussing ability improves greatly.
Claims (7)
1. large-sized speed-changing wind power generator with embedded permanent magnet, comprising: stator, rotor, main shaft, rear end cap, front end housing, rotor are installed on the main shaft, and rotor supports by bearing, rear end cap and front end housing; Main shaft is connected with the driving shaft of prime mover by flange, it is characterized in that: described rotor surface is the disc that laminated core forms, described rotor comprises rotor core, permanent magnet, rotor field spider, rotor core is stacked on the rotor field spider, have the groove that is complementary with permanent magnet in the rotor core, permanent magnet is embedded in the groove of rotor core, and rotor field spider is sleeved on transfer torque on the main shaft.
2. large-sized speed-changing wind power generator with embedded permanent magnet as claimed in claim 1 is characterized in that, described rotor cylindrical is smooth.
3. large-sized speed-changing wind power generator with embedded permanent magnet as claimed in claim 1 is characterized in that, the length of permanent magnet is 0.6 to 0.75 times of rotor surface distance between two poles in the described groove.
4. as claim 1 or 3 described large-sized speed-changing wind power generator with embedded permanent magnet, it is characterized in that described permanent magnet both sides respectively have one every the magnetic space.
5. large-sized speed-changing wind power generator with embedded permanent magnet as claimed in claim 4 is characterized in that, and is described every the magnetic space, wherein fill with non magnetic conformable material, or need not any filler.
6. large-sized speed-changing wind power generator with embedded permanent magnet as claimed in claim 5 is characterized in that, the thickness of described gap bridge 211 every magnetic gap top is 1.5mm to 3mm.
7. large-sized speed-changing wind power generator with embedded permanent magnet as claimed in claim 6 is characterized in that, described have a radially straining beam between magnetic gap, in order to the centrifugal force and the peripheral force of carrying permanent magnet and outer core thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100329333A CN101494397A (en) | 2008-01-23 | 2008-01-23 | Large-sized speed-changing wind power generator with embedded permanent magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100329333A CN101494397A (en) | 2008-01-23 | 2008-01-23 | Large-sized speed-changing wind power generator with embedded permanent magnet |
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| Publication Number | Publication Date |
|---|---|
| CN101494397A true CN101494397A (en) | 2009-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100329333A Pending CN101494397A (en) | 2008-01-23 | 2008-01-23 | Large-sized speed-changing wind power generator with embedded permanent magnet |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102082487A (en) * | 2010-12-22 | 2011-06-01 | 岳群生 | Permanent magnet synchronous motor |
| CN102457113A (en) * | 2010-10-25 | 2012-05-16 | 株式会社安川电机 | Rotary electric machine and rotor therefor |
| CN102593985A (en) * | 2012-02-29 | 2012-07-18 | 重庆长安汽车股份有限公司 | Surface-mounted rotor and motor |
| CN102611227A (en) * | 2012-03-20 | 2012-07-25 | 中科盛创（青岛）电气有限公司 | Magnetic isolation structure of megawatt-level half-direct-drive permanent magnet motor rotor |
| EP2763284A2 (en) | 2013-01-31 | 2014-08-06 | Gamesa Innovation & Technology, S.L. | Construction arrangement of a permanent magnet rotor for a generator |
| CN109905000A (en) * | 2019-04-23 | 2019-06-18 | 山东理工大学 | Radial and tangential permanent magnet magnetic pole mixed excitation electric machine method for production of rotor |
-
2008
- 2008-01-23 CN CNA2008100329333A patent/CN101494397A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102457113A (en) * | 2010-10-25 | 2012-05-16 | 株式会社安川电机 | Rotary electric machine and rotor therefor |
| CN102082487A (en) * | 2010-12-22 | 2011-06-01 | 岳群生 | Permanent magnet synchronous motor |
| CN102082487B (en) * | 2010-12-22 | 2012-07-04 | 岳群生 | Permanent magnet synchronous motor |
| CN102593985A (en) * | 2012-02-29 | 2012-07-18 | 重庆长安汽车股份有限公司 | Surface-mounted rotor and motor |
| CN102593985B (en) * | 2012-02-29 | 2016-12-14 | 重庆长安汽车股份有限公司 | A kind of surface-mounted rotor and a kind of motor |
| CN102611227A (en) * | 2012-03-20 | 2012-07-25 | 中科盛创（青岛）电气有限公司 | Magnetic isolation structure of megawatt-level half-direct-drive permanent magnet motor rotor |
| EP2763284A2 (en) | 2013-01-31 | 2014-08-06 | Gamesa Innovation & Technology, S.L. | Construction arrangement of a permanent magnet rotor for a generator |
| CN109905000A (en) * | 2019-04-23 | 2019-06-18 | 山东理工大学 | Radial and tangential permanent magnet magnetic pole mixed excitation electric machine method for production of rotor |
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Addressee: Wu Yujie Document name: Notification of Publication of the Application for Invention |
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Open date: 20090729 |