《一种水平轴风力发电机动态结构分析方法》（英文） 陈严 等

cai1972

ABSTRACT
This paper considers the structural dynamic analysis of horizontal axis wind turbine(HAWT) rotor blades. Initially a blade from a 300 W machine was used, using both experimental and theoretical modal analyses. In the experiments, a DA S (Dynamic Signal A nalysis and F ault Diagnosis System) was used to ex tract modal parameters by measuring vibrations at various locations along the blade surface. A finite element analysis (FEA ) method was used for the theoretical modal analysis. Comparison of experiment and theory explains the low order vibration conditions. The effects of dif ferent constraint conditions of the FE model are discussed. Finally, theoretical modal analysis is used to analyze a 600 kW rotor blade. The results are compared with those calculated using ‘Bladed for Windows’ ofGarrad Hassan and Partners Ltd (UK), and satisfactory agreement between them isobtained.