Abstract
ABSTRACT The ever-increasing size of wind turbines has given rise to a need for design of the carbon-glass hybrid blades. From the perspective of extreme loads, aero-elastic characteristics and cost, this study investigates the influence of carbon-glass blade structure on the performances of the whole wind turbine. With an integrated tool for analyzing ultimate loads and deformations of wind turbine components, the structural optimization model for the carbon-glass hybrid blade was built, and the new structural blade was optimized. By using a quantitative cost model, the performance of the wind turbine equipped with the optimized blades was analyzed; it shows that the use of glass-carbon hybrid materials and the reasonable structural design can effectively reduce the loads and deformation of the blade in the edge-wise and torsional directions. The use of carbon fiber will increase the manufacturing cost of the blade, but from an overall perspective, the cost of the whole wind turbine will have a slightly reduction of 0.8%.
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