Structure Optimization Design Of5KW H Type Vertical Axis Wind Composite Turbine Blade

As the demand of energy by human is increasing, the green energy resourcesespecially wind resources is more and more paid attention by people. It has been aperiod of time for researching on the horizontal axis wind turbine. But it is still ininitial stage for the research on the vertical wind turbine. This paper introduce a kindof method to optimize and design the structure of the composite for the H typevertical wind turbine to get the more reasonable and lighter structure of the blade. Theoptimized structure can meet the strength requirement.The aerodynamic load of the vertical wind turbine blade is calculated by thetheory of air dynamics.After the load is known, the shear flow of the blade section isanalyzed and calculated by Matlab software to get the best structure of the bladesection.Then, on the basis of optimization for the web position, at first, the number ofbasic laminate with different orientations must be formed. Then the stacking sequenceof the composite turbine blade is optimized by Matlab software under the premise of agenetic algorithm. The optimization is used to get the best structure of layers. Theresult shows that it is effective to use this kind of design for the optimization of thevertical axis wind composite turbine blade with laminate structure.At last the method of gradually reducing the thickness of the single ply is used tomake the blade has a lighter quality and through the finite element calculation andanalysis, to make sure that the optimized blade structure can meet the strengthrequirement. The results show that even in the concentration of stress conditions, theeach layer of the blade can still meet the strength requirement and not be damagedwhich is expected to reach optimization requirements.