摘要
针对风力机叶片在较低空气密度下易出现失速等问题,在提前变桨控制策略的基础上,提出了实时调整提前变桨控制策略中的变桨微动角度的调节方法,并采用CFD数值仿真及现场试验进行验证。结果表明,实时调整提前变桨控制策略中变桨微动角度,提高了风力机组在不同运行条件下的适应性,改善了风力机叶片在低空气密度下的流动分离,减小了叶片的动态失速,提升了风力机功率,最大增幅为3.17%。
Aiming at the problem of stall of wind turbine blades under low air density,on the basis of the advanced pitch control strategy,this paper presents a method of adjusting the fretting angle of the pitch in the advanced pitch control strategy in real time.The CFD numerical simulation and field test are used to verify the method.The results show that the adjusting the fretting angle of the pitch in the advanced pitch control strategy in real time improves the adaptability of the wind turbine under different operating conditions.The dynamic stall of the blade is reduced by the flow separation of the blade at low air density,and the power of the wind turbine is increased by 3.17%.
作者
高鑫
GAO Xin(Northwest Electric Power Test Research Institute of China Datang Group Science and Technology Research Institute Limited,Xi’an 710021,China)
出处
《水电能源科学》
北大核心
2020年第3期159-163,共5页
Water Resources and Power
关键词
风力机
变桨
空气密度
数值模拟
wind turbine
propeller
air density
numerical simulation
