Influence of internal and external excitations on load-sharing characteristics of the wind turbine gear transmission system
LI Yao
YU Xiaohui
DENG Yue
NI Gaoxiang
ZHU Caichao
TAN Jianjun
Abstract：[Objective]Considering the compact structural and internal/external excitations of the floating wind turbine drivetrain comprehensively,a 6.2 MW floating wind turbine compact drivetrain was taken as the research object to establish a rigid-flexible coupling nonlinear multi-body dynamic model.[Methods]The influence of base motion on the load-sharing perfor-mance of the floating wind turbine planetary gear transmission was analyzed.The influence law of component assembly error,main shaft's length,and bearing position on the load-sharing performance of the floating wind turbine planetary gear transmis-sions was clarified.This study can support improving the load-bearing capacity of the floating wind turbine drivetrain.[Results]The results show that the nonlinear coupling of foundation motion and environmental load has a negative impact on the load-sharing performance of planetary transmission system,and the impact increases with the increase of wind speed.It is found that the load-sharing coefficient of planetary transmission system increases monotonously with the increase of component errors.Specifically,the influence of assembly errors of different parts on the load-sharing characteristics is in descending order:plane-tary gear,sun gear,planetary carrier and inner gear ring.In addition,with the increase of the length of the main shaft and the dis-tance between the support point and the hub,the bearing load capacity of the planetary transmission system will be improved.
Keywords：Floating wind turbinePlanetary gear transmissionAssembly errorLoad-sharing characteristics
Publication Date：2025-02-14
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：9( 39-47 )