摘要
为研究大型风力机智能叶片的非定常气动特性,以具有尾缘襟翼的NREL 5 MW参考风力机为研究对象,改进动态失速模型并修正动态尾流模型,建立风力机智能叶片的非定常气动模型。进而,通过仿真验证所建模型的准确性。最后,研究在不同尾缘襟翼角度下翼型升力系数、叶根挥舞弯矩和风力机功率的变化规律。结果表明,所建模型可较准确模拟翼型周围的非定常流动状态;尾缘襟翼可减小动态失速效应,有利于降低疲劳载荷、抑制功率波动。
To research the unsteady aerodynamic performance of large-scale wind turbine smart blade,the National Renewable Energy Laboratory(NREL)5 MW reference wind turbine with trailing edge flaps(TEFs)was selected as the study object.The unsteady aerodynamic model of wind turbine smart blade was developed including the improved dynamic stall model and the modified dynamic wake model.Then,simulations were run out to verify the accuracy of the present model.At last,the change law of the lift coefficient,the flapwise root moment and the power of wind turbine were studied under different TEF angel conditions.Results show that the present model can simulate the unsteady flow around the airfoil with high accuracy.The TEF can mitigate the dynamic stall effect and reduce the fatigue load and suppress the power fluctuation.
作者
张文广
王奕枫
刘瑞杰
Zhang Wenguang;Wang Yifeng;Liu Ruijie(State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources,North China Electric Power University,Beijing 102206,China;School of Control and Computer Engineering,North China Electric Power University,Beijing 102206,China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2019年第4期1171-1178,共8页
Acta Energiae Solaris Sinica
基金
国家重点研发计划(2017YFB0602105)
北京市共建项目
关键词
风力机
非定常空气动力学
气动特性
智能叶片
尾缘襟翼
wind turbine
unsteady aerodynamics
aerodynamic performance
smart blade
trailing edge flap
