CN100554677C - Design method of multi-degree-of-freedom S-shaped blades for vertical axis wind turbines - Google Patents
Design method of multi-degree-of-freedom S-shaped blades for vertical axis wind turbines Download PDFInfo
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- CN100554677C CN100554677C CNB2007100437757A CN200710043775A CN100554677C CN 100554677 C CN100554677 C CN 100554677C CN B2007100437757 A CNB2007100437757 A CN B2007100437757A CN 200710043775 A CN200710043775 A CN 200710043775A CN 100554677 C CN100554677 C CN 100554677C
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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
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- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
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Abstract
本发明公开了一种垂直轴风力机多自由度S型叶片设计方法。S型叶片由N段不同半径与圆心角的圆弧设计而成，且相邻的两段圆弧之间总是相切的。每段圆弧有两个自由度，即圆心角α与半径r，N段圆弧组成的S型叶片有2N个设计自由度。通过对S型叶片的2N个设计自由度进行优化组合，得到一种风能利用率最高的多自由度S型叶片的设计参数。
The invention discloses a design method for multi-degree-of-freedom S-shaped blades of a vertical axis wind turbine. The S-shaped blade is designed by N arcs with different radii and central angles, and two adjacent arcs are always tangent. Each arc has two degrees of freedom, that is, the central angle α and the radius r, and the S-shaped blade composed of N arcs has 2N design degrees of freedom. By optimizing the combination of 2N design degrees of freedom of S-shaped blades, the design parameters of a multi-degree-of-freedom S-shaped blade with the highest wind energy utilization rate are obtained.
Description
Technical field
The present invention relates to a kind of design method of pneumatic equipment blades made shape, particularly a kind of vertical axis wind mill multiple freedom degree S type lane design method.
Background technique
Wind energy is a clean energy resource with fastest developing speed in the renewable energy sources, also is the generation mode that has large-scale development and commercialized development prospect most.1993 to 2003 10 in the period of, the annual growth of world's wind-power electricity generation reaches 29.7%.To the year ends 2003, global wind-powered electricity generation electric motor power reaches 4,030 ten thousand kilowatts, and the wind-power electricity generation amount accounts for 0.5% of the total electric weight in the world.Wherein European total installation of generating capacity is 2,871 ten thousand kilowatts, accounts for 73% of world's wind-powered electricity generation electric motor power.German wind-power electricity generation accumulative total in 2003 electric motor power reaches 1,461 ten thousand kilowatt, accounts for global more than 1/3.India in 2003 accumulative total wind-power electricity generation electric motor power has also reached 2,130,000 kilowatts, arranges the 5th in the world, occupies the first place of developing country.The sight of future world wind-power electricity generation has been described with full and accurate data and penetrating analysis by EWEA in the report of recent portion, and expects the year two thousand twenty wind-power electricity generation and will account for 12% of world's electric power total amount.Wind energy is subjected to the generally attention of countries in the world as the strategic position of future source of energy supply important component part.
The THE WIND ENERGY RESOURCES IN CHINA reserves are abundant, and according to preresearch estimates, the wind energy resources of the land overhead 10 meters height layers of China can the exploitation amount be 2.53 hundred million kilowatts; The wind energy content of off sea 10 meters height layers of greater coasting area is about 7.5 hundred million kilowatts.On macroscopic view, China possesses the resources supplIes of extensive development wind-power electricity generation.To the end of the year 2004, China's wind-power electricity generation accumulative total electric motor power reaches 76.4 ten thousand kilowatts, and National Development and Reform Committee's planning grid connected wind power installation in 2005 will reach 1,000,000 kilowatts, reach 3,000,000 kilowatts in 2010, and the year two thousand twenty reaches 2,000 ten thousand kilowatts.
In order to improve wind energy utilization, the Blade Design Method that people have spent a large amount of energy to come research level axle wind energy conversion system, but how to optimize the design of vertical axis windmill S type blade? how to improve the wind energy utilization of S blade? the work of this respect rarely has report.
Fig. 1 is a kind of shaft resistance type windmill, and its acting principle is as follows: when wind direction from left to right the time, and, the stressed F of A-O section and B-O section
1With F
2With wind direction all is consistent, and A-O section moving direction is identical with wind direction, is downwind leg, and B-O section moving direction is opposite with wind direction, is the contrary wind section.A-O section " pocket " has been lived wind, and B-O section " pocket " is wind incessantly, therefore, and F
1＞F
2, countershaft O forms a moment of torsion, makes to rotate.The A-O section is to doing positive work, but the B-O section is to having done negative work, and when blower fan was worked, positive work was greater than negative work, can rotary driving; After turning over 180 degree, the A-O section is just opposite with the acting situation of B-O section, and just so rotating can continuous operation.
The blade shape of shaft resistance type windmill has varied, and Fig. 2 is a S type blade, and Fig. 3 is a glass airfoil fan, and Fig. 4 is the plate airfoil fan.Could what kind of blade shape farthest utilize wind energy? adopt which type of design method just can obtain best S type blade shape?
Summary of the invention
The purpose of this invention is to provide a kind of vertical axis wind mill multiple freedom degree S type lane design method, use this design method, can obtain having the multiple freedom degree S type lane of maximal wind-energy utilization ratio.
In order to achieve the above object, the present invention adopts following technical proposals:
S type blade is designed by the circular arc of 1～N section different radii and central angle, and always tangent between the two neighboring sections circular arc.Every section circular arc has two degrees of freedom, be central angle alpha and radius r, the S type blade that N section circular arc is formed has 2N design freedom, is optimized combination by 2N design freedom to above-mentioned S type blade, obtains the design parameter of one group of multiple freedom degree S type lane that wind energy utilization is the highest.
The central angle alpha of above-mentioned every section circular arc
iBe 0.00001～180 degree, radius r i is 0.00001～∞ a times of blade turning radius.
The method of above-mentioned optimum organization adopts genetic algorithm or Hua Luogeng Optimum seek i ng method to be optimized combination.
Description of drawings
Fig. 1 is the fundamental diagram of shaft resistance type windmill.
Fig. 2 is a wind energy conversion system S type blade.
Fig. 3 is a wind energy conversion system cup airfoil fan.
Fig. 4 is a wind energy conversion system plate airfoil fan.
Fig. 5 is the blade of multi-freedom degree constraint.
Specific embodiment
A preferred embodiment of the present invention is:
S type blade is made up of 3 sections tangent in twos circular arcs, and central angle is respectively α
1, α
2, α
3, radius is respectively r
1, r
2, r
3The rotor turning radius is R.
Utilize existing optimization method, above-mentioned 6 design freedoms are optimized design, can adopt genetic algorithm, Optimum seek i ng method or other Optimization Design.Present embodiment is used the Optimum seek i ng method that professor Hua Luogeng proposes, and table 1 is one and has 6 design parameters that each parameter has the orthogonal table of 5 design levels.Utilize table 1, use tunnel test or Field Flow Numerical Simulation technology, 25 kinds of population of parameter are closed experimentize or calculate, obtain every kind of wind energy utilization under the combination.According to the thought of Optimum seek i ng method, obtain 6 design parameters best value separately then, these 6 best values have just constituted the composite design of one group of optimum.As under certain wind speed and speed conditions, (α
1, α
2, α
3, r
1/ R, r
2/ R, r
3/ R) best value may be (12 °, 16 °, 14 °, 2.5,1.5,1).
Table 1 orthogonal table
Claims (2)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100437757A CN100554677C (en) | 2007-07-13 | 2007-07-13 | Design method of multi-degree-of-freedom S-shaped blades for vertical axis wind turbines |
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|---|---|---|---|
| CNB2007100437757A CN100554677C (en) | 2007-07-13 | 2007-07-13 | Design method of multi-degree-of-freedom S-shaped blades for vertical axis wind turbines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101122278A CN101122278A (en) | 2008-02-13 |
| CN100554677C true CN100554677C (en) | 2009-10-28 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103174585A (en) * | 2013-03-15 | 2013-06-26 | 中国农业大学 | S-shaped vertical axis wind turbine blade shape design method |
| CN103644080A (en) * | 2013-12-08 | 2014-03-19 | 陈俞任 | Polar region wind energy electric field |
| CN107314489B (en) * | 2017-07-24 | 2019-08-27 | 青岛海信日立空调系统有限公司 | A kind of air-conditioner outdoor unit and air-conditioning |
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2007
- 2007-07-13 CN CNB2007100437757A patent/CN100554677C/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| s型叶片可逆式轴流风机的全三维优化设计. 黄典贵.机械工程学报，第41卷第12期. 2005 |
| s型叶片可逆式轴流风机的全三维优化设计. 黄典贵.机械工程学报，第41卷第12期. 2005 * |
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| CN101122278A (en) | 2008-02-13 |
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Granted publication date: 20091028 Termination date: 20120713 |