CN202167910U - A Permanent Magnet Wind Power Generator with Axial Main Magnetic Circuit Structure - Google Patents
- ️Wed Mar 14 2012
Info
-
Publication number
- 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 Authority
- CN
- China Prior art keywords
- permanent magnet
- circuit structure
- outer rotor
- magnetic circuit
- generator Prior art date
- 2011-07-29 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.)
- Expired - Fee Related
Links
- 230000006698 induction Effects 0.000 claims abstract description 22
- 238000005266 casting Methods 0.000 claims abstract 4
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 4
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 3
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 2
- 150000002910 rare earth metals Chemical class 0.000 claims description 2
- 238000002955 isolation Methods 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 3
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- 230000035515 penetration Effects 0.000 abstract 1
- 230000035945 sensitivity Effects 0.000 abstract 1
- 230000004907 flux Effects 0.000 description 14
- 238000012360 testing method Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 7
- 230000005611 electricity Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 238000012417 linear regression Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000012956 testing procedure Methods 0.000 description 1
Images
Classifications
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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
Landscapes
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
本实用新型涉及一种轴向主磁路结构永磁风力发电机，其风轮转动方向与风向平行，在风轮下部水平设有环形双层盖板，两层盖板之间设有外转子组件，外转子组件包括垂直固定在两层盖板之间的外转子壳体，所述外转子壳体内侧周向均匀分布有n个永磁体单元，永磁体单元的垂直旋转方向的截面为“［”型；定子组件包括在轮毂铸件外侧周向均布的m个磁感应元件，磁感应元件的垂直旋转方向的截面为C型。轴向主磁路结构和周向渗透粘接的交叉排列布局使得磁感应强度和气隙之间呈现出的负斜率线形关系，从而大大改善了发电机的气隙敏感性，使得永磁发电机的结构设计，更加容易实现，大幅度降低发电机成本，便于工程实际推广应用。
The utility model relates to a permanent magnet wind power generator with an axial main magnetic circuit structure. The rotation direction of the wind wheel is parallel to the wind direction. The lower part of the wind wheel is horizontally provided with an annular double-layer cover plate, and an outer rotor is arranged between the two-layer cover plates. Assemblies, the outer rotor assembly includes an outer rotor casing vertically fixed between two layers of cover plates, n permanent magnet units are uniformly distributed on the inside of the outer rotor casing in the circumferential direction, and the section of the permanent magnet unit in the vertical direction of rotation is ""["type; the stator assembly includes m magnetic induction elements uniformly distributed in the circumferential direction on the outside of the hub casting, and the cross section of the magnetic induction element perpendicular to the rotation direction is C-shaped. The cross-arrangement layout of the axial main magnetic circuit structure and the circumferential penetration bonding makes the negative slope linear relationship between the magnetic induction intensity and the air gap, which greatly improves the air gap sensitivity of the generator, and makes the structure of the permanent magnet generator The design is easier to realize, greatly reduces the cost of the generator, and facilitates the practical application of the project.
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 wheel30 bottoms rigidly fix through the
upper cover plate2
usefulness bolts3 of
ring flange1 and generator; Be fixed with
outer rotor case4 between
upper cover plate2 and the
lower cover7, rely on hexagon socket
head cap screw5 to fix.N (experimental test is with 80) magnetic pole mounting groove that
outer rotor case4 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 unit6 is bonded in the inner mounting groove of the sub-housing of
unofficial biography4 through the osmosis type anaerobic adhesive, the cross section perpendicular to rotation direction of
permanent magnet unit6 be " ［ "Type;
Permanent magnet unit6 bottoms are fixed on
outer rotor case4 inboards, and
permanent magnet unit6 both ends are respectively the N utmost point and the S utmost point, and
permanent magnet unit6 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 unit6 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 axis10 through
wheel hub casts8; 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 casts8 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 unit6 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 wheel30 rotates; The generator external rotor that is fixed together with this
wind wheel30 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 axis10 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 unit6 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)
1.一种轴向主磁路结构永磁风力发电机，所述发电机为外转子垂直轴风力发电机，其特征在于，在风轮下部水平设有环形双层盖板，两层盖板之间设有外转子组件，外转子组件包括垂直固定在两层盖板之间的外转子壳体，所述外转子壳体内侧周向均匀分布有n个永磁体单元，永磁体单元的垂直旋转方向的截面为“［”型，“［”型永磁体单元底部固定在外转子壳体内侧，“［”型永磁体单元两端部分别为N极与S极，相邻的两个“［”型永磁体单元NS极性反向排布；所述垂直轴上通过轮毂铸件固定有定子组件，所述定子组件包括在轮毂铸件外侧周向均布的m个磁感应元件，磁感应元件的垂直旋转方向的截面为C型，磁感应元件底部固定在轮毂铸件外侧，磁感应元件的两端臂上均穿设有线圈，磁感应元件两端部与所述“［”型永磁体单元的两端部在对应位置相对设置，其中n＞m，且n和m互为素数。 1. A permanent magnet wind-driven generator with an axial main magnetic circuit structure, the generator is an outer-rotor vertical-axis wind-driven generator, and it is characterized in that an annular double-layer cover plate is horizontally arranged at the lower part of the wind wheel, and the two-layer cover plate An outer rotor assembly is arranged between them, and the outer rotor assembly includes an outer rotor casing vertically fixed between two layers of cover plates, and n permanent magnet units are evenly distributed in the circumferential direction of the inner side of the outer rotor casing, and the vertical The section in the direction of rotation is “ ［” type, the bottom of the ［］ type permanent magnet unit is fixed on the inside of the outer rotor shell, and the two ends of the ［ ［］ type permanent magnet unit are respectively N pole and S pole, and the adjacent two “ ［” The polarity of the " type permanent magnet unit NS is reversely arranged; the stator assembly is fixed on the vertical shaft through the hub casting, and the stator assembly includes m magnetic induction elements uniformly distributed in the outer circumferential direction of the hub casting, and the vertical rotation direction of the magnetic induction element is The cross-section is C-shaped, the bottom of the magnetic induction element is fixed on the outside of the hub casting, coils are pierced on both ends of the magnetic induction element, and the two ends of the magnetic induction element are opposite to the two ends of the "[" type permanent magnet unit at corresponding positions. Set, where n>m, and n and m are mutually prime numbers. 2.根据权利要求1所述的一种轴向主磁路结构永磁风力发电机，其特征在于，所述“［”型永磁体单元粘接在外转子壳体内侧的安装槽中，所述外转子壳体由隔磁材料构成。 2. A permanent magnet wind power generator with axial main magnetic circuit structure according to claim 1, characterized in that, the "[" type permanent magnet unit is bonded in the mounting groove inside the outer rotor housing, and the The outer rotor housing is made of magnetic isolation material. 3.根据权利要求2所述的一种轴向主磁路结构永磁风力发电机，其特征在于，所述“［”型永磁体单元由底部的导磁条与两端部的永磁体块构成，永磁体块粘接在导磁条上。 3. A kind of axial main magnetic circuit structure permanent magnet wind-driven generator according to claim 2, it is characterized in that, described "" [ " type permanent magnet unit is made up of the magnetic conduction bar of the bottom and the permanent magnet block of two ends Composition, the permanent magnet block is bonded on the magnetic conductive strip. 4.根据权利要求3所述的一种轴向主磁路结构永磁风力发电机，其特征在于，所述导磁条由电工纯钢制成。 4. A permanent magnet wind-driven generator with an axial main magnetic circuit structure according to claim 3, wherein the magnetic strip is made of electrical pure steel. 5.根据权利要求3所述的一种轴向主磁路结构永磁风力发电机，其特征在于，所述永磁体块由Nd-Fe-B稀土永磁体制成。 5. A permanent magnet wind power generator with axial main magnetic circuit structure according to claim 3, characterized in that, the permanent magnet block is made of Nd-Fe-B rare earth permanent magnet. 6.根据权利要求1所述的一种轴向主磁路结构永磁风力发电机，其特征在于，所示磁感应元件采用硅钢制成。 6. A permanent magnet wind power generator with an axial main magnetic circuit structure according to claim 1, characterized in that the magnetic induction element shown is made of silicon steel. 7. 根据权利要求1所述的一种轴向主磁路结构永磁风力发电机，其特征在于，所述n=80，m=19。 7. A permanent magnet wind power generator with axial main magnetic circuit structure according to claim 1, characterized in that, said n=80, m=19. 8.根据权利要求1所述的一种轴向主磁路结构永磁风力发电机，其特征在于，所述环形双层盖板的上盖板与风轮之间通过法兰盘固定连接，上盖板与法兰之间通过螺栓固定。 8. A permanent magnet wind power generator with an axial main magnetic circuit structure according to claim 1, characterized in that, the upper cover plate of the annular double-layer cover plate is fixedly connected to the wind wheel through a flange, The upper cover plate and the flange are fixed by bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120273589 CN202167910U (en) | 2011-07-29 | 2011-07-29 | A Permanent Magnet 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 | A Permanent Magnet Wind Power Generator with Axial Main Magnetic Circuit Structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202167910U true CN202167910U (en) | 2012-03-14 |
Family
ID=45803713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120273589 Expired - Fee Related CN202167910U (en) | 2011-07-29 | 2011-07-29 | A Permanent Magnet Wind Power Generator with Axial Main Magnetic Circuit Structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202167910U (en) |
Cited By (1)
* Cited by examiner, † Cited by third party| 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)
* Cited by examiner, † Cited by third party| 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 | Axial main magnetic circuit structure permanent magnet wind turbine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 2012-03-14 | C14 | Grant of patent or utility model | |
| 2012-03-14 | GR01 | Patent grant | |
| 2015-09-16 | CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120314 Termination date: 20140729 |
| 2015-09-16 | EXPY | Termination of patent right or utility model |