摘要
以设计攻角作为变量,在不超过额定功率和基本运行风速范围内,考虑风场风速的概率分布,建立了以年发电量最大为目标的优化模型,采用遗传算法对20 kW定桨距风力机叶片外形进行了优化设计。通过对3叶片定桨距20 kW风力机的气动性能评价以及与NREL的同型风力机的对比表明,优化后的风力机具有更好的气动性能,表明了该优化方法在设计定桨距风力机中的优越性。
A method of making design attack angles as a variable was presented.Considering the wind speed probability distribution of wind farm,an optimization model with the objective of maximum annual energy production was established in the range of rated power and basic operating wind speed.The blade geometry of a 20 kW constant-pitch wind turbine was optimized by using genetic algorithm according to the model.Through the evaluation of the aerodynamic performance of 20 kW constant-pitch wind turbine and the comparison with the same type wind turbine of NREL,the results showed that optimized wind turbine had a better aerodynamic performance,which illustrated the advantages of the method in the design process of constant-pitch wind turbine.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2011年第5期121-124,共4页
Transactions of the Chinese Society for Agricultural Machinery
基金
重庆市科技攻关计划资助项目(CSTC2008AC3105)
关键词
定桨距
风力机
叶片
优化设计
主动失速
遗传算法
Constant-pitch
Wind turbine
Blades
Optimal design
Active stall
Genetic algorithm
