CN202167910U - Permanent-magnetic wind-power generator with axial main magnetic circuit structure - Google Patents
Permanent-magnetic wind-power generator with axial main magnetic circuit structure Download PDFInfo
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- CN202167910U CN202167910U CN 201120273589 CN201120273589U CN202167910U CN 202167910 U CN202167910 U CN 202167910U CN 201120273589 CN201120273589 CN 201120273589 CN 201120273589 U CN201120273589 U CN 201120273589U CN 202167910 U CN202167910 U CN 202167910U
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- circuit structure
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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
- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
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Abstract
The utility model provides a permanent-magnetic wind-power generator with an axial main magnetic circuit structure, the rotating direction of the wind wheel is parallel to the wind direction; an annular dual-layer cover plate is arranged horizontally at the lower part of the wind wheel; an external rotor component is arranged between the two layers of cover plates; the external rotor component comprises an external rotor shell that is vertically fixed between the two layers of cover plates; n permanent-magnetic units are uniformly arranged at the internal side of the external rotor shell in circumferential direction; the section of the permanent-magnetic unit in vertical rotating direction is shaped as an tilted n; the fixed component comprises m magnetic-induction elements that are uniformly arranged at the external side of the hub casting in circumferential direction; and the section of the magnetic-induction element in vertical rotating direction is shaped as C. By adopting the axial main magnetic circuit structure and the circumferential bonded crossed layout, a negative-slope linear relationship is formed between the magnetic induction intensity and the air gap, so that the air gap sensitivity of the generator is greatly improved; the structural design of the permanent-magnetic generator can be realized more easily; the cost of the generator is reduced greatly; and the practical generalization and application for engineering are facilitated.
Description
Technical field
The utility model belongs to the sub-rare earth permanent magnet technical field of wind power generator of unofficial biography, relates 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 vertical axis wind power generation wind wheel with low cost be provided for Wind Power Utilization.
At present, traditional permanent-magnetic wind driven generator group tangential that great majority are employed in rotation between stator and rotor is the structure of permanent magnet alternately, makes the overall startup magnetic resistance moment of generator bigger, and wind power conversion efficiency reduces, and makes the acting of can not generating electricity of the gentle breeze energy.
The utility model content
The utility model purpose is to provide a kind of axial main magnetic circuit structure permanent-magnetic wind driven generator of the coaxial direct drive-type of vertical axis rotor; Overall startup magnetic resistance moment in order to solve existing permanent-magnetic wind driven generator is bigger; Wind power conversion efficiency reduces, and makes can not the generate electricity problem of acting of the gentle breeze energy.
For realizing above-mentioned purpose; The scheme of the utility model is: a kind of axial main magnetic circuit structure permanent-magnetic wind driven generator, and said generator is the external rotor vertical axis aerogenerator, is 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 said 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 through the wheel hub casts on the said vertical axis; Said stator module is included in m the magnetic induction part that wheel hub casts external circumferential is uniformly distributed with; The cross section of the vertical direction of rotation of magnetic induction part is the C type; Magnetic induction part bottom is fixed on the wheel hub casts outside, all is equipped with coil on the two ends arm of magnetic induction part, the magnetic induction part both ends and said "
［ "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.
Said "
［ "The type permanent magnet unit is bonded in the inboard mounting groove of outer rotor case, and said outer rotor case is made up of NULL.
Said "
［ "The type permanent magnet unit is made up 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.
Said magnetic conduction bar is processed by electrician's clean steel.
Said permanent magnet blocks is processed by the Nd-Fe-B rare-earth permanent magnet.
Shown in magnetic induction part adopt silicon steel to process.
Said n=80, m=19.
Be fixedly connected through ring flange between the upper cover plate of said annular double-layer cover plate and the wind wheel, pass through bolt between upper cover plate and the flange.
The permanent-magnetic wind driven generator of the utility model, the negative slope linear dependence that demonstrates between magnetic flux density and the air gap.This has changed fully between magnetic flux density and the air gap and has concerned traditional mathematical model---the inverse square function; Thereby improved the air gap sensitiveness of generator greatly; Make the structural design of permanent magnet generator; Key techniques such as process route is confirmed, processing and manufacturing are more prone to realize, reduce the generator cost significantly simultaneously, are convenient to that engineering is actual to be applied.
Description of drawings
Fig. 1 is axial main magnetic circuit electric generator structure sketch map;
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 sketch map that Fig. 5 makes an experiment for the generator to embodiment;
Fig. 6 is the test data fitting curve between magnetic flux density and the air gap.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further detailed explanation.
Like Fig. 1, Fig. 2, a kind of axial main magnetic circuit structure permanent-magnetic wind driven generator shown in Figure 3; Wind wheel 30 bottoms rigidly fix through 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.N (experimental test is with 80) magnetic pole mounting groove that outer rotor case 4 is uniformly distributed with in machined by the NULL forging forming again, the magnetic pole logarithm of the number of magnetic pole mounting groove and generator is identical.Permanent magnet unit 6 is bonded in the inner mounting groove of the sub-housing of unofficial biography 4 through the osmosis type anaerobic adhesive, 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, and permanent magnet unit 6 is oppositely arranged according to SN polarity is separated between the upper and lower; It is as shown in Figure 1 to put in order, and 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 through 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, and 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 is specifically narrated), 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 does cutting magnetic line movement between the generator external rotor of the generator internal stator that is fixed together of wind wheel vertical axis 10 and rotation, thereby produces induced potential; Draw through binding post, just produced electric current.Winding coil 9-1 draws a power source loads at interval through 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, like Fig. 2, shown in 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 following:
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 is as shown in Figure 5, and X is a leakage field direction measuring point, and Y is a leakage field direction measuring point.
Find through 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.
Like 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 following: straight line L slope is A ≈-300, and intercept is B ≈ 1300, and coefficient correlation is 0.9043.Shown in Figure 6 is test data fitting curve between magnetic flux density and the air gap, exists linear relationship through the least square method data fitting between the test data of its main magnetic direction magnetic flux density Hm and air gap delta, and 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 model.
As can be seen from the figure, in the generator of present embodiment, the negative slope linear dependence that demonstrates between magnetic flux density and the air gap.This has changed fully between magnetic flux density and the air gap and has concerned traditional mathematical model---the inverse square function; Thereby improved the air gap sensitiveness of generator greatly; Make the structural design of permanent magnet generator; Key techniques such as process route is confirmed, processing and manufacturing are more prone to realize, reduce the generator cost significantly simultaneously, are convenient to that engineering is actual to be applied.
Claims (8)
1. axial main magnetic circuit structure permanent-magnetic wind driven generator; Said generator is the external rotor vertical axis aerogenerator, it is characterized in that, is 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 said 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 through the wheel hub casts on the said vertical axis; Said stator module is included in m the magnetic induction part that wheel hub casts external circumferential is uniformly distributed with; The cross section of the vertical direction of rotation of magnetic induction part is the C type; Magnetic induction part bottom is fixed on the wheel hub casts outside, all is equipped with coil on the two ends arm of magnetic induction part, the magnetic induction part both ends and said "
［ "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. a kind of axial main magnetic circuit structure permanent-magnetic wind driven generator according to claim 1 is characterized in that, said "
［ "The type permanent magnet unit is bonded in the inboard mounting groove of outer rotor case, and said outer rotor case is made up of NULL.
3. a kind of axial main magnetic circuit structure permanent-magnetic wind driven generator according to claim 2 is characterized in that, said "
［ "The type permanent magnet unit is made up 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. a kind of axial main magnetic circuit structure permanent-magnetic wind driven generator according to claim 3 is characterized in that said magnetic conduction bar is processed by electrician's clean steel.
5. a kind of axial main magnetic circuit structure permanent-magnetic wind driven generator according to claim 3 is characterized in that said permanent magnet blocks is processed by the Nd-Fe-B rare-earth permanent magnet.
6. a kind of 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 process.
7. a kind of axial main magnetic circuit structure permanent-magnetic wind driven generator according to claim 1 is characterized in that said n=80, m=19.
8. a kind of axial main magnetic circuit structure permanent-magnetic wind driven generator according to claim 1 is characterized in that, is fixedly connected through ring flange between the upper cover plate of said 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 |
|---|---|---|---|
| CN 201120273589 CN202167910U (en) | 2011-07-29 | 2011-07-29 | Permanent-magnetic wind-power generator with axial main magnetic circuit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120273589 CN202167910U (en) | 2011-07-29 | 2011-07-29 | Permanent-magnetic wind-power generator with axial main magnetic circuit structure |
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| Publication Number | Publication Date |
|---|---|
| CN202167910U true CN202167910U (en) | 2012-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120273589 Expired - Fee Related CN202167910U (en) | 2011-07-29 | 2011-07-29 | Permanent-magnetic wind-power generator with axial main magnetic circuit structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102255462A (en) * | 2011-07-29 | 2011-11-23 | 河南科技大学 | Permanent magnet wind-driven generator with axial main magnetic path structure |
-
2011
- 2011-07-29 CN CN 201120273589 patent/CN202167910U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102255462A (en) * | 2011-07-29 | 2011-11-23 | 河南科技大学 | Permanent magnet wind-driven generator with axial main magnetic path structure |
| CN102255462B (en) * | 2011-07-29 | 2014-01-01 | 河南科技大学 | Permanent magnet wind-driven generator with axial main magnetic path structure |
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| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20120314 Termination date: 20140729 |
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| EXPY | Termination of patent right or utility model |