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Aerodynamic Analysis and Structural Design for the Vertical Axis Wind Turbines

Author: WangBingBing
Tutor: ZhuPing；GuZuoJiong
School: North China Electric Power University (Beijing)
Course: Power Machinery and Engineering
Keywords: Vertical axis wind turbine Flow tube model Wind turbine structure design
CLC: TK83
Type: Master's thesis
Year: 2011
Downloads: 263
Quote: 2
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Abstract


In recent years, wind turbines worldwide has been rapid development, horizontal axis wind turbine absolute advantage to occupy the lion's share of the market , while the vertical axis wind turbine development is lagging behind , but its unique structure as well as the excellent performance has been more and more attention . In this paper, the straight blade vertical axis wind turbine related research. The wind wheel load the correct analysis and accurate load forecasting is the basis for the design of wind turbine structure and key , blade element theory of the flow tube model approach is based on the momentum - the vertical axis wind wheel performance analysis of the most widely used method by two multi-stream tube model the aerodynamic performance of vertical axis wind wheel . And , respectively, after straightening vanes and blades deflect wind wheel loads were analyzed. Vertical axis wind wheel performance is affected by many factors , including the tip speed ratio , the number of blades , blade chord length , wind wheel height to diameter ratio , etc. Based on the calculation results of the Matlab program analyze the performance of each of the above factors on the wind wheel the impact of the results of the analysis can provide a theoretical basis for the optimal design of the wind wheel . Start and rated to determine the wind speed of the wind wheel have a significant impact on the structure and performance of the wind wheel , this paper Weibull ( Weibull ) distribution function for specific wind farm wind round the start - up wind speed and the rated wind speed was calculated . Under Matlab procedure on the calculation result of the wind wheel load on the structure and strength of the wind rotor blade , rod , the coupling of the support lever and the blade , vertical drive shaft such design .

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CLC: > Industrial Technology > Energy and Power Engineering > Wind energy, wind machine > Wind machinery and equipment
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