2MW風力發(fā)電機葉片的設計建模和疲勞壽命分析
文內圖片:
圖片說明:(a)帆船圖1-1(b)風車圖1-1人類早期風能利用方式
[Abstract]:As we all know, the development of human production and the improvement of living standards can not be separated from a variety of energy sources. With the gradual reduction of fossil energy, more and more countries pay attention to new energy. Wind energy is a kind of green and environmentally friendly renewable clean energy, and its most important way of utilization is wind power generation. Therefore, the innovation and development of wind turbine is the key to make rational use of wind energy and then improve the energy structure and environment. Blade is the key component of wind turbine to capture wind energy effectively, and its cost accounts for about 20% of the total cost of wind turbine. Therefore, improving the performance of the blade can improve the power generation and capture more wind energy. At present, the mainstream fan types in the market are more and more inclined to large-scale, and Shandong coastal areas are rich in wind energy resources, which is more suitable for the installation and use of large fans. Therefore, this paper is based on airfoil design software Profili, 3D modeling software UG, finite element analysis software ANSYS Workbench and aerodynamics analysis software GH Bladed, according to the current situation of wind resources utilization in coastal areas. A blade of onshore wind turbine with power of 2MW is designed, and its load analysis and fatigue life analysis are carried out. The main research contents of this paper include: 1. According to the quarterly wind speed data of Shandong coastal areas released by the Provincial Meteorological Bureau, the annual average wind speed is calculated. 2. Fan blade design: determine rated power and rated wind speed, calculate blade length, determine the number of blades, determine blade profile airfoil, chord length and torsional angle, etc. 3D modeling of fan blade: in fan blade, the airfoil of each section is composed of several free curves. The designed airfoil data are derived by Profili software, and the actual spatial coordinates of airfoil are obtained by EXCEL coordinate transformation, which is saved into * .dat format. Finally, the 3D modeling design of blade is completed by using the curve modeling function of UG. Fatigue life analysis of blade: GH Bladed is used to analyze the stress state of fan under three operation modes: normal operation, normal shutdown and emergency shutdown. ANSYS Workbench is used to analyze the unidirectional fluid-solid coupling analysis and fatigue life analysis of the blade.
【學位授予單位】:煙臺大學
【學位級別】:碩士
【學位授予年份】:2017
【分類號】:TM315
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