CN102255462A - Permanent magnet wind-driven generator with axial main magnetic path structure - Google Patents
Permanent magnet wind-driven generator with axial main magnetic path structure Download PDFInfo
- Publication number
- CN102255462A CN102255462A CN2011102158321A CN201110215832A CN102255462A CN 102255462 A CN102255462 A CN 102255462A CN 2011102158321 A CN2011102158321 A CN 2011102158321A CN 201110215832 A CN201110215832 A CN 201110215832A CN 102255462 A CN102255462 A CN 102255462A
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- magnetic
- driven generator
- axial main
- wind
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
Landscapes
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The invention relates to a permanent magnet wind-driven generator with an axial main magnetic path structure. The wind wheel rotating direction of the permanent magnet wind-driven generator is parallel to the wind direction; annular double layers of cover plates are horizontally arranged on the lower part of a wind wheel; an outer rotor assembly is arranged between the two layers of cover plates and comprises an outer rotor shell which is vertically fixed between the two layers of cover plates; n permanent magnet units are uniformly distributed along the circumferential direction of the inner side of the outer rotor shell; the sections of the permanent magnet units along the vertical rotating direction are [-shaped; a stator assembly comprises m magnetic induction elements which are uniformly distributed along the circumferential direction of the outer side of a wheel hub casting; and the sections of the magnetic induction elements along the vertical rotating direction are C-shaped. The axial main magnetic path structure and a circumferential permeation bonding structure are arranged crosswise, so that a negative slope linear relation between the magnetic induction intensity and an air gap is realized, the air gap sensitivity of the generator is greatly improved, the structural design of the permanent magnet wind-driven generator is easier to realize, the generator cost is lowered greatly, and convenience is brought to practical engineering popularization and application.
Description
Technical field
The invention belongs to the sub-rare earth permanent magnet technical field of wind power generator of unofficial biography, relate to the coaxial axial main magnetic circuit structure permanent magnet wind generating of the direct drive-type device of a kind of vertical axis aerogenerator wind wheel.
Background technology
Wind energy is as a kind of renewable, pollution-free green energy, and reserves are very abundant, becomes a kind of new forms of energy that countries in the world develop energetically gradually.In recent years, wind power generation shared ratio in the energy total amount in the world improves gradually, the energy development mode of with fastest developing speed in the world, tool development prospect that wind-powered electricity generation has become.Large-scale developing and utilizing of wind energy, will effectively reduce fossil energy consumption, reduce greenhouse gas emission, protection environment.Rise resistance and merge wing plate type vertical axis rotor (application number: 201010572822.9, publication No.: CN102022259) merged the resistance and the lift efficiency of Wind Power Utilization, have start that wind speed is low, speed promote fast, wind energy utilization is high, with low cost and advantage such as reliable, will provide vertical axis wind power generation wind wheel with low cost for Wind Power Utilization.
At present, traditional permanent-magnetic wind driven generator group great majority between stator and rotor adopt in the tangential structures of permanent magnet alternately of rotating, and make the overall startup magnetic resistance moment of generator bigger, and wind power conversion efficiency reduces, and make the acting of can not generating electricity of the gentle breeze energy.
Summary of the invention
The object of the invention is to provide the axial main magnetic circuit structure permanent-magnetic wind driven generator of the coaxial direct drive-type of vertical axis rotor, bigger in order to the overall startup magnetic resistance moment that solves existing permanent-magnetic wind driven generator, wind power conversion efficiency reduces, and makes can not the generate electricity problem of acting of the gentle breeze energy.
For achieving the above object, the solution of the present invention is: axial main magnetic circuit structure permanent-magnetic wind driven generator, described generator is the external rotor vertical axis aerogenerator, be provided with annular double-layer cover plate in the wind wheel lower horizontal, be provided with the external rotor assembly between the two-layer cover plate, the external rotor assembly comprises the outer rotor case that is vertically fixed between the two-layer cover plate, and described outer rotor case inner circumferential is evenly distributed with n permanent magnet unit, the cross section of the vertical direction of rotation of permanent magnet unit be "
［ "Type, "
［ "Type permanent magnet unit bottom is fixed on the outer rotor case inboard, "
［ "Type permanent magnet unit both ends are respectively the N utmost point and the S utmost point, adjacent two "
［ "The type permanent magnet unit NS pole reversal is arranged; Be fixed with stator module by the wheel hub casts on the described vertical axis, described stator module is included in m uniform magnetic induction part of wheel hub casts external circumferential, the cross section of the vertical direction of rotation of magnetic induction part is the C type, the magnetic induction part bottom is fixed on the wheel hub casts outside, all be equipped with coil on the two ends arm of magnetic induction part, the magnetic induction part both ends and described "
［ "The both ends of type permanent magnet unit are oppositely arranged at correspondence position, and wherein n＞m, and n and m be prime number each other.
Described "
［ "The type permanent magnet unit is bonded in the mounting groove of outer rotor case inboard, and described outer rotor case is made of NULL.
Described "
［ "The type permanent magnet unit is made of the magnetic conduction bar of bottom and the permanent magnet blocks at both ends, and permanent magnet blocks is bonded on the magnetic conduction bar.
Described magnetic conduction bar is made by electrician's clean steel.
Described permanent magnet blocks is made by the Nd-Fe-B rare-earth permanent magnet.
Shown in magnetic induction part adopt silicon steel to make.
Described n=80, m=19.
Fixedly connected by ring flange between the upper cover plate of described annular double-layer cover plate and the wind wheel, pass through bolt between upper cover plate and the flange.
Permanent-magnetic wind driven generator of the present invention, the negative slope linear dependence that presents between magnetic flux density and the air gap.This has changed the traditional Mathematical Modeling of relation---inverse square function between magnetic flux density and the air gap fully, thereby improved the air gap sensitiveness of generator greatly, make the structural design of permanent magnet generator, key techniques such as process route is determined, processing and manufacturing are more prone to realize, simultaneously reduce the generator cost significantly, be convenient to that engineering is actual to be applied.
Description of drawings
Fig. 1 is axial main magnetic circuit electric generator structure schematic diagram;
Fig. 2 is the axial section of generator;
Fig. 3 is vertical axis aerogenerator assembling overall appearance figure;
Fig. 4 is a main magnetic circuit magnetic line of force distribution schematic diagram;
The schematic diagram of Fig. 5 for the generator of embodiment is tested;
Fig. 6 is the test data fitting curve between magnetic flux density and the air gap.
Embodiment
The present invention will be further described in detail below in conjunction with accompanying drawing.
As Fig. 1, Fig. 2, axial main magnetic circuit structure permanent-magnetic wind driven generator shown in Figure 3, wind wheel 30 bottoms rigidly fix by the upper cover plate 2 usefulness bolts 3 of ring flange 1 and generator, be fixed with outer rotor case 4 between upper cover plate 2 and the lower cover 7, rely on hexagon socket head cap screw 5 to fix.Again at n uniform (experimental test is with 80) magnetic pole mounting groove of inside processing, the magnetic pole logarithm of the number of magnetic pole mounting groove and generator is identical by the NULL forging forming for outer rotor case 4.Permanent magnet unit 6 is bonded in by the osmosis type anaerobic adhesive in the mounting groove of the sub-housing of unofficial biography 4 inside, the cross section perpendicular to rotation direction of permanent magnet unit 6 be "
［ "Type, permanent magnet unit 6 bottoms are fixed on outer rotor case 4 inboards, and permanent magnet unit 6 both ends are respectively the N utmost point and the S utmost point, permanent magnet unit 6 according to SN polarity between the upper and lower every oppositely arranging, put in order as shown in Figure 1, Fig. 1 is the section of generator along parallel direction of rotation.
Above-mentioned permanent magnet unit 6 can also be used C type or U type except adopting above-mentioned shape (channel-section steel shape).Experiment shows, "
［ "The type effect is better.
Corresponding external rotor, generator also comprises internal stator, the internal stator assembly is fixed on the vertical axis 10 by wheel hub casts 8, the internal stator assembly comprises m the magnetic induction part 9 that (experimental test is with 19) silicon steel sheet constitutes that is distributed on wheel hub casts 8 outsides, the vertical rotation direction cross section of magnetic induction part 9 is C types: winding coil 9-1 is sleeved on two arms of magnetic induction part 9, and silicon steel unit, the bottom 9-2 of magnetic induction part 9 embeds wheel hub casts 8.Wherein n＞m, and n and m be prime number each other.
As shown in Figure 2, rotor permanent magnet unit 6 and internal stator magnetic induction part 9 are in corresponding position outside, and their polar end is relative in twos, and the magnetic line of force of a pair of magnetic pole distributes as shown in Figure 4.So, the main magnetic circuit structure of this wind wheel generator is that the permanent magnet unit of external rotor and the magnetic induction unit of internal stator form closed main magnetic circuit at the major axes orientation of generator, then becomes leakage field direction (in perpendicular to the vertical axis plane) in the air gap tangential direction by SN polarity interval reversed arrangement on the circumference of axle section.The permanent magnet arrangement pitch of leakage field direction is more than 5 times of main magnetic circuit direction air gap, thereby guarantees the magnetic line of force close intensity of magnetic of main magnetic circuit direction vertically.Through test determination (hereinafter specifically narration), the magnetic flux density of its main magnetic direction can reach about ten times of magnetic flux density of leakage field direction.
Axial main magnetic circuit structure permanent magnet wind generating device as shown in Figure 3, wind drive wind wheel 30 rotates, the generator external rotor that is fixed together with this wind wheel 30 rotates thereupon, and do cutting magnetic line movement between the generator internal stator that wind wheel vertical axis 10 is fixed together and the generator external rotor of rotation, thereby generation induced potential, draw by binding post, just produced electric current.Winding coil 9-1 draws a power source loads at interval by binding post, and the coil of other position is drawn two power source loads in addition, constitutes three-phase alternating current output with this.
Further, in order to save permanent magnetic material, alleviate permanent magnet weight, shown in Fig. 2,4, permanent magnet unit 6 can adopt the branch body structure.Promptly by cuboid electrician clean steel 6-1, S level magnet steel 6-2, N level magnet steel 6-3 through the osmosis type anaerobic adhesive bonding and constitute "
［ "The type permanent magnet unit.
Generator to present embodiment is tested, and the test detail is as follows:
1, tester: CTS27 type numeral teslameter (the hall probe minimum thickness is 0.2mm), clearance gauge.Wherein, gaussmeter is used for measuring the magnetic flux density of main magnetic, leakage field direction, and clearance gauge is used for measuring the size of gaps of main magnetic direction.
2, testing procedure: choosing one of them stator arbitrarily (is magnetic induction unit mentioned above, 9-2 as shown in Figure 5), with this stator is benchmark, turn clockwise to measure the magnetic flux density of each rotor and the air gap of this stator, main magnetic direction and leakage field direction, and the record data of surveying.Concrete test position as shown in Figure 5, X is a leakage field direction measuring point, Y is a leakage field direction measuring point.
Find by test data, have linear relationship between main magnetic direction magnetic flux density Hm and the air gap delta, investigate the internal relation of magnetic flux density Hm and air gap delta so choose following formula Hm=simple linear regression analysis Mathematical Modeling of A δ+B.
As Fig. 6, test data is carried out the processing of least square method data fitting according to the Mathematical Modeling of following formula can estimate that parameter is as follows: straight line L slope is A ≈-300, and intercept is B ≈ 1300, and coefficient correlation is 0.9043.Figure 6 shows that the test data fitting curve between magnetic flux density and the air gap, exist linear relationship by the least square method data fitting between the test data of its main magnetic direction magnetic flux density Hm and air gap delta, coefficient correlation is up to 0.9.Result of the test shows, after the permanent magnet arrangement pitch of leakage field direction reaches 20 times of main magnetic circuit direction air gaps, will there be linear relationship in main magnetic direction magnetic flux density Hm and air gap delta and deteriorate to traditional Mathematical Modeling.
As can be seen from the figure, in the generator of present embodiment, the negative slope linear dependence that presents between magnetic flux density and the air gap.This has changed the traditional Mathematical Modeling of relation---inverse square function between magnetic flux density and the air gap fully, thereby improved the air gap sensitiveness of generator greatly, make the structural design of permanent magnet generator, key techniques such as process route is determined, processing and manufacturing are more prone to realize, simultaneously reduce the generator cost significantly, be convenient to that engineering is actual to be applied.
Claims (8)
1. axial main magnetic circuit structure permanent-magnetic wind driven generator, described generator is the external rotor vertical axis aerogenerator, it is characterized in that, be provided with annular double-layer cover plate in the wind wheel lower horizontal, be provided with the external rotor assembly between the two-layer cover plate, the external rotor assembly comprises the outer rotor case that is vertically fixed between the two-layer cover plate, and described outer rotor case inner circumferential is evenly distributed with n permanent magnet unit, and the cross section of the vertical direction of rotation of permanent magnet unit is
" ［ "Type, "
［ "Type permanent magnet unit bottom is fixed on the outer rotor case inboard, "
［ "Type permanent magnet unit both ends are respectively the N utmost point and the S utmost point, adjacent two "
［ "The type permanent magnet unit NS pole reversal is arranged; Be fixed with stator module by the wheel hub casts on the described vertical axis, described stator module is included in m uniform magnetic induction part of wheel hub casts external circumferential, the cross section of the vertical direction of rotation of magnetic induction part is the C type, the magnetic induction part bottom is fixed on the wheel hub casts outside, all be equipped with coil on the two ends arm of magnetic induction part, the magnetic induction part both ends and described "
［ "The both ends of type permanent magnet unit are oppositely arranged at correspondence position, and wherein n＞m, and n and m be prime number each other.
2. axial main magnetic circuit structure permanent-magnetic wind driven generator according to claim 1 is characterized in that, described "
［ "The type permanent magnet unit is bonded in the mounting groove of outer rotor case inboard, and described outer rotor case is made of NULL.
3. axial main magnetic circuit structure permanent-magnetic wind driven generator according to claim 2 is characterized in that, described "
［ "The type permanent magnet unit is made of the magnetic conduction bar of bottom and the permanent magnet blocks at both ends, and permanent magnet blocks is bonded on the magnetic conduction bar.
4. axial main magnetic circuit structure permanent-magnetic wind driven generator according to claim 3 is characterized in that described magnetic conduction bar is made by electrician's clean steel.
5. axial main magnetic circuit structure permanent-magnetic wind driven generator according to claim 3 is characterized in that described permanent magnet blocks is made by the Nd-Fe-B rare-earth permanent magnet.
6. axial main magnetic circuit structure permanent-magnetic wind driven generator according to claim 1 is characterized in that, shown in magnetic induction part adopt silicon steel to make.
7. axial main magnetic circuit structure permanent-magnetic wind driven generator according to claim 1 is characterized in that described n=80, m=19.
8. axial main magnetic circuit structure permanent-magnetic wind driven generator according to claim 1 is characterized in that, fixedlys connected by ring flange between the upper cover plate of described annular double-layer cover plate and the wind wheel, passes through bolt between upper cover plate and the flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110215832.1A CN102255462B (en) | 2011-07-29 | 2011-07-29 | Permanent magnet wind-driven generator with axial main magnetic path structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110215832.1A CN102255462B (en) | 2011-07-29 | 2011-07-29 | Permanent magnet wind-driven generator with axial main magnetic path structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102255462A true CN102255462A (en) | 2011-11-23 |
| CN102255462B CN102255462B (en) | 2014-01-01 |
Family
ID=44982491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110215832.1A Expired - Fee Related CN102255462B (en) | 2011-07-29 | 2011-07-29 | Permanent magnet wind-driven generator with axial main magnetic path structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102255462B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103997177A (en) * | 2014-06-11 | 2014-08-20 | 北京理工大学 | Single-phase outer rotor switch reluctance generator with U-shaped stator teeth |
| CN105364604A (en) * | 2015-12-15 | 2016-03-02 | 东南大学 | Non-contact permanent magnetic loading device for machine tool spindle |
| RU2645949C2 (en) * | 2016-01-20 | 2018-02-28 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Воронежский государственный технический университет" | Inductor-type generator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4588914A (en) * | 1984-06-05 | 1986-05-13 | Westinghouse Electric Corp. | Permanent magnet rotor for high speed motors and generators |
| CN200996357Y (en) * | 2006-11-20 | 2007-12-26 | 张大鹏 | Wind-power driven generater |
| CN101539103A (en) * | 2008-04-10 | 2009-09-23 | 河南科技大学 | Stall-controllable permanent magnet wind turbine |
| CN202167910U (en) * | 2011-07-29 | 2012-03-14 | 河南科技大学 | Permanent-magnetic wind-power generator with axial main magnetic circuit structure |
-
2011
- 2011-07-29 CN CN201110215832.1A patent/CN102255462B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4588914A (en) * | 1984-06-05 | 1986-05-13 | Westinghouse Electric Corp. | Permanent magnet rotor for high speed motors and generators |
| CN200996357Y (en) * | 2006-11-20 | 2007-12-26 | 张大鹏 | Wind-power driven generater |
| CN101539103A (en) * | 2008-04-10 | 2009-09-23 | 河南科技大学 | Stall-controllable permanent magnet wind turbine |
| CN202167910U (en) * | 2011-07-29 | 2012-03-14 | 河南科技大学 | Permanent-magnetic wind-power generator with axial main magnetic circuit structure |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103997177A (en) * | 2014-06-11 | 2014-08-20 | 北京理工大学 | Single-phase outer rotor switch reluctance generator with U-shaped stator teeth |
| CN105364604A (en) * | 2015-12-15 | 2016-03-02 | 东南大学 | Non-contact permanent magnetic loading device for machine tool spindle |
| CN105364604B (en) * | 2015-12-15 | 2017-12-26 | 东南大学 | A kind of non-contact permanent magnetism loading device of machine tool chief axis |
| RU2645949C2 (en) * | 2016-01-20 | 2018-02-28 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Воронежский государственный технический университет" | Inductor-type generator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102255462B (en) | 2014-01-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zheng et al. | A novel wind energy harvesting system with hybrid mechanism for self-powered applications in subway tunnels | |
| CN102979662B (en) | Coastal magnetic suspension swaying stator-free power generating set | |
| CN201378789Y (en) | High-power density generator with adjustable magnetic flux | |
| CN102322402A (en) | Double-paddle wind driven generator | |
| CN101709845A (en) | Self-powered environmental-friendly street lamp and square lamp | |
| CN102073011A (en) | Testing system of large permanent magnet direct drive wind driven generator | |
| CN101527470A (en) | Magneticflux-switching type composite excitation transverse-magneticflux wind powered generator | |
| CN102255462B (en) | Permanent magnet wind-driven generator with axial main magnetic path structure | |
| CN103925163A (en) | Hydraulic and pneumatic one-way shaft and birotor type power generating device | |
| CN204730957U (en) | For rotor and the stator temperature testing circuit of wind-powered electricity generation high-speed permanent magnetic generator | |
| CN201540202U (en) | 1.5MW permanent-magnet direct-drive wind power generator testing device | |
| CN202167910U (en) | Permanent-magnetic wind-power generator with axial main magnetic circuit structure | |
| Habash et al. | Performance optimization of a dual-rotor wind turbine system | |
| CN202832971U (en) | Double-oar aerogenerator | |
| CN202443031U (en) | Wind power collection and wind speed measurement device based on magnetoelectric effect | |
| CN102361379A (en) | Large-capacity double-C-type stator double-disk type rotor transverse magnetic flux permanent magnet wind-driven generator | |
| CN210218187U (en) | Pneumatic efficiency test device | |
| Spooner et al. | Lightweight, ironless-stator, PM generators for direct-drive wind turbines | |
| CN105298716B (en) | The strong multiphase fault-tolerant structure ocean current power generation unit of the ability that operates with failure | |
| CN203604113U (en) | Vertical axis wind turbine capable of being started by breezes efficiently and of coreless structure and generating set | |
| CN103675674B (en) | A kind of emulation test method based on permanent-magnetic wind driven generator electromagnetic model | |
| CN207033654U (en) | The wind power generation plant that a kind of rotatable swing pipe generates electricity | |
| CN104578628B (en) | New pair of magnetic field convolution generator and its electricity generation system | |
| Song et al. | Development of vertical axial wind turbine driven by three hastate windmill and permanent magnet generator | |
| CN103532271A (en) | High-efficiency motor generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20140101 Termination date: 20180729 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |