| The rapid development of wind energy conversion technology has made wind energy one of the most important renewable and sustainable energies. Current wind energy conversion system uses wind turbine to transform wind energy into mechanical energy which is then convert to electricity by generator. The blade is one of the key parts of the Horizontal-axis wind turbine (HAWT for short) which is the uppermost form of wind energy utilization. With the wide use of Horizontal-axis wind turbine, the design of blade shape and the research of aerodynamic characteristics have been attracting wide-spread attention. Conversion efficiency of wind turbine is determined by blade shape which occupies a decisive position in the wind turbine design. So it is necessary to study the technology of blade design, which is significant for the development of our country's wind energy industry.This paper studies vane design and dynamic characteristics of blade and wind rotor of 1.0MW Horizontal-axis wind turbine blades. The main work and conclusions in this dissertation are as follows:â‘ This paper studies the basic theories about vane design of Horizontal-axis wind turbine.â‘¡By analyzing and comparing various design options, this paper regards Wilson method as a relatively precision method that is widely used for the present. On basis of the Wilson method for optimum design of wind turbine blade geometry, this paper decides the optimal design model and its constraints, calculates the parameters of blade shape by MATLAB, takes into account blade tip loss, root damage and axial and circumferential interference factor on the aerodynamic properties of blade by Wilson method which greatly improves the calculation accuracy and efficiency of blade design, and process the results by the linear correction method.â‘¢This paper converts two-dimensional airfoil coordinate into three-dimensional coordinate points of blade on basis of transformation theory of discrete data points. In addition, this paper integrates graphics into coordinate transformation, enabling coordinate rotation transformation to realize in the process of drawing; therefore, this paper provides a new perspective for airfoil coordinate transformation studies.â‘£The cross section curves of the blades are drawn by cubic B-spline surface based on the free surface modeling function of UG, and then the three-dimensional model of blade is established by parametric modeling method. Processing blade solid model makes airfoil surface of the transition section of the blade smoother. Through modal analysis of the blade and rotor, this paper find out that the dynamic characteristics of a single blade is different form the dynamic characteristics of wind rotor. Deformation of rotating wind turbine blades interacts with each other and integrates elastic deformation of the wheel hub into a coupled system, the frequency of which is relative lower than that of the single blade. This paper concludes, therefore, the blade's dynamic characteristics can not replace the dynamic characteristics of wind rotor in large wind turbine design.
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