摘要
针对偏侧风对风力机气动性能影响的研究问题,用相对运动法作偏侧风的矢量分解,获得各风速分量的时间空间变化性质;在气动性能的计算模型中分离出偏侧风扰动项,分析了偏侧风对气动力的影响机理;用差值比较法在实例计算中得到偏侧风的气动推力和力矩,得出偏侧风对风力机具有周期性局部冲击的结论,为综合研究风力机风速风向变化下的气动特性及风电传动系统动力学行为提供了支持。
In order to study the effects of side wind on the aerodynamic performance of the wind turbine, firstly the method of relative motion to have a vector decomposition of side wind was adopts, then side-wind perturbation term was separated from the caIcuIating model of the aerodynamic performance to analyze effect mechanism of side wind on aerodynamic force, at last, the method of difference comparison was used to analyze the aerodynamic thrust and torque, the result express that the side wind possess periodic local impact on wind turbine, which provides basis of the comprehensive research of the aerodynamic performance and dynamic behavior of the transmission system of wind turbine under varying wind.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2011年第4期537-542,共6页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(50975294)
关键词
风力机
偏侧风
气动性能
wind turbine
side wind
aerodynamic performance
