摘要
针对传统叶素动量理论无法用于优化锥角β的问题,提出了β-BEM修正模型.该修正模型可以成功计算带锥角风力机气动特性,并应用BEM及β-BEM模型对NACA0012翼型的1.5 MW风力机攻角α及锥角β进行独立优化及统一优化.仿真结果表明:对α、β进行独立优化,风能利用系数值理论上比优化前提升9.3%;对α、β进行统一优化,该值理论上提升9.4%;α、β具有弱相关性,理论上宜采用统一优化方案,但从工程方便角度考虑,亦可采用独立优化方案.
Aiming at the problem that traditional blade element momentum(BEM)theory can not be used to optimize the cone angleβ,a correction model forβ-BEM was proposed.The aerodynamic characteristics of wind turbine with the cone angle could be successfully calculated with the proposed correction model.For a 1.5 MW wind turbine with the NACA0012 airfoil,the attack angleαand the cone angleβwere optimized by both independent and unified optimization methods,with the BEM and theβ-BEM moedels,respectively.The simulated results show that the wind power coefficient gets theoretically improved by 9.3%,compared with that before optimization,whenαandβare independently optimized;it is improved by 9.4%whenαandβare unifiedly optimized.There is a weak relevance betweenαandβ.The unified optimization scheme should be adopted in theory,but the independent optimization scheme can also be adopted from the perspective of engineering convenience.
作者
赵骞
厉伟
姚兴佳
邵一川
郭庆鼎
ZHAO Qian;LI Wei;YAO Xing-jia;SHAO Yi-chuan;GUO Qing-ding(School of Electrical Engineering,Shenyang University of Technology,Shenyang 110870,China;School of Information Engineering,Shenyang University,Shenyang 110004,China)
出处
《沈阳工业大学学报》
EI
CAS
北大核心
2019年第5期495-500,共6页
Journal of Shenyang University of Technology
基金
中国博士后科学基金资助项目(2016M601332)
辽宁省科技创新重大专项项目(201303005)
关键词
风力机
风能利用系数
叶素动量理论
攻角
锥角
独立优化
统一优化
相关性
wind turbine
wind power coefficnent
blade element momentum theory
attack angle
cone angle
independent optimization
unified optimization
relevance
作者简介
赵骞(1981-),男,辽宁辽阳人,博士生,主要从事风力发电技术等方面的研究.
