摘要
风电机组塔筒与叶轮发生共振将严重影响风电机组的安全性。以四川A风场2 MW风电机组为对象,结合瑞利法、工程算法和规范估算公式等对风电机组塔筒进行了固有频率的解析计算,并且利用ANSYS有限元分析软件对风电机组塔筒的三维有限元数值仿真模型进行模态分析,计算出塔筒的理论频率。对比分析了所提出算法的塔筒频率计算结果。分析表明:风电机组正常运转情况下,塔筒不会和风轮发生共振;其中一部分公式精确度较好,可以为塔筒的动态设计提供理论依据,具有一定的实用价值。
Resonance between wind turbine tower and impeller will seriously affect the safety of wind turbine. Taking a 2 MW wind turbine of A wind farm in Sichuan as the object, the analytical calculation of the inherent frequency of the wind turbine tower was carried out by combining Rayleigh method, engineering algorithm and normative estimation formula, and the modal analysis of the three-dimensional finite element numerical simulation model of the wind turbine tower was carried out by using ANSYS finite element analysis software to calculate the theoretical frequency of the tower. The results of the tower frequency calculation by the algorithm in this paper were compared and analyzed. The analysis shows that: the tower will not resonate with the impeller under normal operation of the wind turbine;some of the formulas have good accuracy and can provide theoretical basis for the dynamic design of the tower, which has some practical value.
作者
杨春侠
崔鸿知
张梓建
YANG Chunxia;CUI Hongzhi;ZHANG Zijian(College of Civil Engineering,Changsha University of Science and Technology,Changsha 410114,Hunan,China)
出处
《能源与节能》
2023年第1期6-9,37,共5页
Energy and Energy Conservation
基金
国家自然科学基金项目(51678067)。
关键词
风电机组塔筒
固有频率
瑞利法
模态分析
wind turbine tower
inherent frequency
Rayleigh method
modal analysis
