Multiobjective reliability optimization design for wind turbine gear box layout

LUO Wanxing1, PAN Bosong1, ZHENG Lijun2
(1.College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310014, China;
2.Ningbo Special Equipment Inspection Center, Ningbo 315030,China)

Abstract: Aiming at the existing problem on layout design of wind turbine gear box, the multiobjective reliability optimization design method was used, the case size of wind turbine gear box and the volume of gears were regarded as objects,the model for wind turbine gear box layout design was  established. The influence of three common transmission scheme in layout design of the wind turbine gear box was analyzed and compared.  A 1.5　MW wind turbine gear box was performed as an example. The results indicate  that the weight sum for the case size of wind turbine gear box and the volume of gears is lower than that under the design method of single object as gears volume. The analysis results show that increasing  the rotate speed can reduce the cost of gear box significantly.
Key words: wind turbine gear box; layout design; multiobjective optimization; reliability