摘要
阐述风力发电机叶片上的覆冰质量对风机运行状态的影响,根据叶片覆冰模型,确定仿真过程中改变覆冰质量的方法;仿真分析叶片覆冰质量的变化对机舱左右摆动加速度的影响;运用自谱分析方法,根据限定的自谱密度值,采用先插值再精确计算的方法得出不同工况下的最大覆冰密度允许值,为下一步计算两叶片结冰工况对风机运行所造成的疲劳损伤提供依据。
The ice mass on wind turbine blades has negative influence on the operation of wind turbines. The blade icing model was used to determine the way to change ice mass during the simulation. The simulation analyzed the influence of the change of blade ice mass on the swing acceleration of the nacelle. The maximum permissible ice density under different serviee conditions has been calculated with the limited density determined in the self-power spectrum analysis and can be used for further calculation of the fatigue damage to wind turbines cased by icing on two blades.
出处
《一重技术》
2016年第5期38-42,共5页
CFHI Technology
关键词
风力发电机
叶片
覆冰
加速度
自谱
疲劳损伤
wind turbine
blade
ice
acceleration
self-powerspectrum
fatigue damage
