摘要
针对147 m风轮直径2.5 MW风电机组的配套叶片在设计开发过程中出现的载荷震荡发散现象,通过对叶片载荷和机组坎贝尔图分析,阐述了发散的原因和机理。机组在12P频率附近若存在负阻尼,在额定风速附近时,机组会发生共振,导致载荷发生振荡发散。提出了采用调整叶片扭转刚度的改进措施,对叶片进行了调整,解决了发散的问题。
Aiming at solving the problem of load oscillation and divergence occurred in a 2.5MW wind turbine with blade diameter of 147m,the mechanism of divergence was expounded by analyzing the Campbell diagram and spectrum of blade load.In case that the negative damping present near 12P frequency,the resonance occurs when the wind speed was near the rated wind speed,whichleads to the oscillation and divergence of the load.Adjusting the torsional stiffness of blades was put forward as an improvement measureto alleviate the problem of divergence of blade load.
作者
章培成
孙勇
谭韶毅
ZHANG Pei-cheng;SUN Yong;TAN Shao-yi(Zhejiang Windey Co.,Ltd.,Zhejiang Key Laboratory of Wind Power Generation Technology,Hangzhou 310012,China)
出处
《能源工程》
2021年第1期28-32,共5页
Energy Engineering
基金
国家重点研发计划资助项目(2018YFB0904005)。
关键词
风力发电机组
叶片
发散
载荷
扭转刚度
wind turbine
blade
instability
load
torsional stiffness
