Ambient vibration test and modal analysis for MW grade wind turbine Tower

摘要

Through the environmental pulsating measure in a 1.5 MW wind generator tower drum in Inner Mongolia wind farm, modeling and modal analysis of tower drum are finished with the ANSYS finite element software, and compared with the field measured results, the difference is in the allowed ranged. Proper interval exists between numerical simulation and data obtained from the wind generator tower drum inherent frequencies and blade rotation excitation frequency, which meets the standard design requirements of 《Wind power generation unit tower》.