摘要
通过研究叶片截面气动阻尼特性,建立风力机叶尖气动阻尼模型,重点考虑刹车过程中的气动阻尼变化情况,计算出叶尖刹车轴的气动阻尼;基于叶尖结构动力学运动方程,计算叶尖位移,从而判断叶尖刹车轴是否会发生断裂。
The aerodynamic damping model for blade of wind turbines was set up based on the blade sections' aerodynamic damping characteristic. Taking the change of aerodynamic damping happened in the braking process as the key point; the aerodynamic damping of the brake shaft of blade tip was calculated. Then, the blade tip deflection was calculated to judge whether the brake shaft of blade tip was damaged based on the structural dynamic equation of the blade tip.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2013年第6期946-952,共7页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(51076088)
国家高技术研究发展(863)计划(2012AA051301)
关键词
失速型风力机
气动阻尼
失速特性
故障分析
the stall horizontal wind turbine
aerodynamic damping
stall characteristic
malfunction analysis