Influence of the heights of low-level jets on power and aerodynamic loads of a horizontal axis wind turbine rotor

doi:10.3390/atmos10030132

	Influence of the heights of low-level jets on power and aerodynamic loads of a horizontal axis wind turbine rotor
	Zhang, Xuyao 1; Yang, Congxin 1,2,3; Li, Shoutu 1,2,3
刊名	Atmosphere
	2019-03-01
卷号	10 期号:3
关键词	Aerodynamic loads Power spectrum Spectrum analysis Turbine components Wind Wind turbines FAST Horizontal axis wind turbines Longitudinal force Low level jet Rotor power Spectral modeling Spectrum characteristic Torque coefficient
ISSN号	2073-4433
DOI	10.3390/atmos10030132
英文摘要	The influence of the heights of low-level jets (LLJs) on the rotor power and aerodynamic loads of a horizontal axis wind turbine were investigated using the fatigue, aerodynamics, structures, and turbulence code. The LLJ and shear inflow wind fields were generated using an existing wind speed spectral model. We found that the rotor power predicted by the average wind speed of the hub height is higher than the actual power in relatively weak and shallow LLJ inflow conditions, especially when the LLJ height is located inside the rotor-swept area. In terms of aerodynamic loads, when the LLJ height is located inside the rotor-swept area, the root mean square (RMS) rotor thrust coefficient and torque coefficient increase, while the RMS rotor unbalanced aerodynamic load coefficients, including lateral force, longitudinal force, tilt moment, and yaw moment, decreased. This means that the presence of both positive and negative wind shear in the rotor-swept area not only increases the rotor power but also reduces the unbalanced aerodynamic loads, which is beneficial to the operation of wind turbine. Power spectrum analysis shows no obvious difference in the power spectrum characteristics of the rotor torque and thrust in LLJ inflow conditions with different heights. © 2019 by the authors.
资助项目	National Basic Research Program of China[2014CB046201]
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
出版者	MDPI AG, Postfach, Basel, CH-4005, Switzerland
WOS记录号	WOS:000464175700002
状态	已发表
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114702]
专题	能源与动力工程学院
通讯作者	Yang, Congxin
作者单位	1.Lanzhou Univ Technol, Sch Energy & Power Engn, Lanzhou 730050, Gansu, Peoples R China 2.Gansu Prov Technol Ctr Wind Turbines, Lanzhou 730050, Gansu, Peoples R China 3.Key Lab Fluid Machinery & Syst, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Xuyao,Yang, Congxin,Li, Shoutu. Influence of the heights of low-level jets on power and aerodynamic loads of a horizontal axis wind turbine rotor[J]. Atmosphere,2019,10(3).
APA	Zhang, Xuyao,Yang, Congxin,&Li, Shoutu.(2019).Influence of the heights of low-level jets on power and aerodynamic loads of a horizontal axis wind turbine rotor.Atmosphere,10(3).
MLA	Zhang, Xuyao,et al."Influence of the heights of low-level jets on power and aerodynamic loads of a horizontal axis wind turbine rotor".Atmosphere 10.3(2019).