Vibration response analysis of wind power high-speed stage gear system under turbulent wind load
LI Huanyu
TIAN Hua
Abstract：In view of the profound influence of unsteady turbulent wind loads on the dynamic response of wind turbine gearboxes,this paper presents a complex multi-degree-of-freedom dynamic model that rigorously couples nonlinear gear meshing with bearing support.Turbulent wind speed time histories are generated using the Kaimal spectrum,and the Newmark-β method is employed to obtain the system's acceleration response.Gear meshing stiffness and bearing support stiffness are treated as control variables to elucidate their effects on time-domain and frequency-domain characteristics.Model validation was performed utilizing measured vibration data acquired from a doubly-fed induction generator wind turbine.Results show that the proposed model accurately reproduces both the time-domain waveforms and the dominant frequency-domain peaks under turbulent excitation,confirming the necessity and the effectiveness of the multi-physical-field coupling approach.Furthermore,an intermediate meshing stiffness offers an optimal compromise between stability and energy transmission,while enhanced bearing stiffness markedly suppresses high-amplitude vibration and accelerates vibration decay.This study emphasises the pivotal function of turbulent wind load analysis in gearbox design and fault diagnosis,thereby establishing a substantial theoretical foundation for subsequent structural optimization.
Keywords：wind turbinegeardynamicsresponse analysisturbulent wind speed
Publication Date：2025-07-20
Online Publishing Date：2025-09-08(First online date of this platform, not the publication date of the document)
Pages：7( 78-84 )