Coupling optimization method for MultiMW wind turbine blades

LIU Wei-jiang， PAN Bo-song， CHEN Dong-dong
（College of Mechanical Engineering， Zhejiang University of Technology， Hangzhou 310014，China）

Abstract： In order to reduce the cost of manufacturing the wind turbine blade，multidisciplinary design optimization method for MultiMW wind turbine blades with the design objective of minimum of blade efficiency cost was presented，based on the blade element momentum theory（BEM）and Euler-Bernoulli beam theory of composites material. Then，the coupling optimization method was applied in the design of a new wind turbine blade with a length of 50 meters. The results show that the balance between energy efficiency and the cost of manufacture can be easily found through the proposed methodology，and the blade efficiency cost is reduced by 8.84%.
Key words： multidisciplinary design optimization； wind turbine blade； blade element momentum theory（BEM）； Euler-Bernoulli beam theory；wind energy efficiency