The Optimization Design And Key Performance Simulation Of2MW WTGS’ Blade

With the continuous development of human civilization and continuous improvement of industrial science and technology, human’s energy demand has been increasing dramatically. So, clean energy has been paid more and more attention, in which, the wind power is the most ideal choice. In recent years, because the wind power industries develop rapidly in domestic and foreign, wind power equipment manufacturing industry is unprecedentedly prosperous. As core component of WTGS, wind turbine blade is paid more attention by related industries and research institutions in domestic and foreign. But, because domestic wind turbine research started later, both the theory innovation and technology are weak, especially the megawatt level WTGS’blade, depends mainly on the introduction of foreign technology. Therefore, independent research and development design and manufacturing technology of megawatt wind turbine blade is urgent.As the research object, shape optimization design and simulation study of Performance characteristics of2MW-WTGS’blade are two main research directions. The specific research contents as follows:(1) The optimal axial induced factor A and circumferential induced factor B of each section of blade were calculated respectively by Wilson method and Glauert method, to compare two kinds of results so that to show the advantage of the Wilson method. Then, according to the strip theory,can calculate the preliminary configuration data of blade, and using Matlab software to optimize and trim the preliminary configuration data of blade for getting the final configuration data of blade.(2) using Profili software to choose airfoil which meet the requirements, and gainning the2D coordinate raw data of each section in NACA software, then changing the2D coordinate raw data into the3D coordinate actual data by using EXCEL software, and using Solid Works software to establish the model of WTGS’blades.(3) Using the Wilson method to perform check computation of axial induction factor A and circumferential factor B of actual blade to obtain the real aerodynamic data of actual blade after building the model of blade completely. After performing kinematics and dynamics analysis of wind wheel rotor rigid model, gaining the theoretic variation data of input torque, rotor angular velocity, wind wheel’s power and wind energy utilization coefficient. So, checking preliminarily feasibility and rationality of blade’s design, and providing input data for simulation.(4)Simulating and analyzing wind energy utilization coefficient of wind wheel by using ADAMS/Controls and MATLAB/Simulink Co-Simulation to gain changing curve of the input torque of wind wheel, the reversal torque of the low speed shaft, angular velocity of wind wheel, power of wind wheel and wind power utilization coefficient of wind wheel, so that can verify whether the design of blade meet the requirements.(5) Building the modal analysis model of WTGS’blade, and the modal analysis in ANSYS software and running modal analysis to obtain its own vibration frequency of blade and the amplitude data of the deformation blade. So can verify the rationality of the design of blade, and provide with reference data for operation of WTGS.