摘要
为了研究风力机叶片抗台风优化设计方法,分析了常规风力机叶片在设计工况下的风能利用系数及极端风况下的气动载荷沿展向的变化特征。并以此为根据,选取极限载荷指标变化显著的挥舞剪力和风能利用系数作为协调两种工况的综合优化目标,提出风力机叶片气动外形抗台风设计优化模型。基于遗传算法,并沿风力机叶片展向,通过使用不同加权系数策略,对某1.5 MW风力机叶片气动外形进行优化设计。研究结果表明,优化后的叶片在具有较高气动效率的基础上能够获得较好的降载效果。
The aerodynamic configuration of an 1.5 MW wind turbine blade is regarded as the target to research anti-typhoon optimization design of the wind turbine blade.The variation characteristics of wind power coefficient at the design condition and aerodynamic loads of the conventional wind turbine blade under extreme wind condition along the blade spanwise were analyzed.An anti-typhoon optimization design model of aerodynamic configuration of wind turbine blade was put forward by selecting wind power coefficient and flapwise shear force whose ultimate load index changes significantly as the comprehensive optimization objective used to coordinate two kinds of working conditions.Based on the genetic algorithm,and by using different weighted coefficients along the blade spanwise,the optimization design of 1.5 MW wind turbine blade has been completed.The results show that the optimization of the blade can achieve a better effect of load reduction with high power coefficient.
出处
《长沙理工大学学报（自然科学版）》
CAS
2015年第4期89-94,共6页
Journal of Changsha University of Science and Technology:Natural Science
基金
湖南省教育厅科研资助项目(15C0036)
关键词
风力机叶片
遗传算法
优化设计
抗台风
wind turbine blade
genetic algorithm
optimization design
anti-typhoon
