Nonlinear dynamics modeling and analysis of transmission error of wind turbine planetary gear system

2014 ◽  
Vol 228 (4) ◽  
pp. 438-448 ◽  
Author(s):  
Yang Zhao ◽  
Mutellip Ahmat ◽  
Kalbinur Bari
Keyword(s):  
Nonlinear Dynamics ◽  
Wind Turbine ◽  
Planetary Gear ◽  
Transmission Error ◽  
Gear System ◽  
Dynamics Modeling ◽  
Modeling And Analysis ◽  
Planetary Gear System

Dynamic Response Analysis of Wind Turbine Planetary Gear System With Interval Stiffness Parameters

2014 ◽  
Author(s):  
Sha Wei ◽  
Qinkai Han ◽  
Zhipeng Feng ◽  
Yanhua Shen ◽  
Fulei Chu
Keyword(s):  
Wind Turbine ◽  
Planetary Gear ◽  
Transmission Error ◽  
Gear System ◽  
Dynamic Responses ◽  
Lumped Parameter Model ◽  
Response Analysis ◽  
Mesh Stiffness ◽  
Gear Trains ◽  
Planetary Gear System

Planetary gear transmission system is one of the primary parts of the wind turbine drive train. Due to the assembly state, lubrication conditions and wear, the mesh stiffness of the planetary gear system is an uncertain parameter. In this paper, taking the uncertainty of mesh stiffness into account, the dynamic responses of a wind turbine gear system subjected to wind loads and transmission error excitations are studied. Firstly, a lumped-parameter model is extended to include both the planetary and parallel gears. Then the fluctuation ranges of dynamic mesh forces are predicted quantitatively and intuitively based on the combined Chebyshev interval inclusion function and numerical integration method. Finally, examples of gear trains with different interval mesh stiffnesses are simulated and the results show that tooth separations are becoming more obvious at the resonant speed by considering the fluctuating mesh stiffness of the second parallel gear stage. The nonlinear tooth separations are degenerated obviously as the fluctuation error of the mesh stiffness of the second parallel gear set is increased.

Dynamic meshing incentive analysis for wind turbine planetary gear system

2017 ◽  
Vol 69 (2) ◽  
pp. 306-311 ◽  
Author(s):  
Yuxiang Chen ◽  
Mutellip Ahmat ◽  
Zhong-tang Huo
Keyword(s):  
Wind Turbine ◽  
Planetary Gear ◽  
Transmission Error ◽  
Gear System ◽  
The Sun ◽  
Content Type ◽  
Impact Stress ◽  
Planetary Gear System ◽  
The Impact ◽  
Gear Meshes

Purpose Irregular windy loads are loaded for a wind turbine. This paper aims to determine the form of gear failure and the working life of the gear system by assessing the dynamic strength of gears and dynamic stress distribution. Design/methodology/approach The helical planetary gear system of the wind turbine growth rate gearbox was investigated, and while a variety of clearance and friction gear meshing processes were considered in the planetary gear system, a finite element model was built based on the contact–impact dynamics theory, solved using the explicit algorithm. The impact stress of the sun gear of the planetary gear system was calculated under different loads. An integrated planetary gear meshing stiffness, and the error of system dynamic transmission error were investigated when the planetary gear meshes with the sun or ring gears. Findings The load has little effect on the sun gear of the impact stress which was known. The varying stiffness is different while the planetary gear meshes with the sun and ring gears. There were differences between the planetary gear system and the planetary gear, and with load, the planetary gear transmission error decreases. Originality/value This study will provide basis knowledge for the planetary gear system.

Hybrid dynamic modeling and analysis of the electric vehicle planetary gear system

2020 ◽  
Vol 150 ◽  
pp. 103860
Author(s):  
Changzhao Liu ◽  
Xiansong Yin ◽  
Yinghua Liao ◽  
Yuanyuan Yi ◽  
Datong Qin
Keyword(s):  
Electric Vehicle ◽  
Dynamic Modeling ◽  
Planetary Gear ◽  
Gear System ◽  
Modeling And Analysis ◽  
Planetary Gear System

Analysis of Modal Transition and Coincidence Degree Variation Instabilities of Wind Turbine Planetary Gear System

2019 ◽  
Vol 33 (04) ◽  
pp. 1959012
Author(s):  
ChunGuang Wang
Keyword(s):  
Wind Turbine ◽  
Coincidence Degree ◽  
Planetary Gear ◽  
Coupling Factor ◽  
Gear System ◽  
Parameter Instability ◽  
Analysis And Design ◽  
Meshing Stiffness ◽  
System A ◽  
Planetary Gear System

To accurately analyze the dynamic characteristics of the wind turbine planetary gear system, a dynamic model is established. The sensitivity of natural frequency to meshing stiffness is calculated by modal analysis method, the coupling factor is used to judge the occurrence of transition, the parameter instability caused by the meshing stiffness change is analyzed by the multi-scale method. The results the change rule on eigenvalue sensitivity, mode transition criterion and coincidence degree variation instabilities are obtained, the obtained rules can be used for dynamic analysis and design optimization.

The Fault Characteristics of Planetary Gear System with Tooth Breakage

2013 ◽  
Vol 569-570 ◽  
pp. 489-496 ◽  
Author(s):  
Yong Gui ◽  
Qin Kai Han ◽  
Zheng Li ◽  
Zhi Ke Peng ◽  
Fu Lei Chu
Keyword(s):  
Dynamic Response ◽  
Wind Turbine ◽  
Planetary Gear ◽  
Transmission System ◽  
Gear Transmission ◽  
Gear System ◽  
Operation Conditions ◽  
Gear Transmission System ◽  
Planetary Gear System ◽  
Two Parameters

Tooth breakage is a typical failure form of wind-turbine planetary gear transmission system, it is important to study the influence of tooth breakage on vibration characteristics of planetary gear transmission system. In this paper, considering the tooth breakage defect, a lumped parameter vibration model of a planetary gear system with time-periodic mesh stiffness is established. Effects of the length and width of tooth breakage on meshing stiffness and dynamic response are discussed in detail. The relation between characteristic frequency of the tooth breakage fault and rotating speeds is pointed out. Several statistical indicators are utilized to show the influence of two parameters (length of planet tooth breakage and input speed) on the dynamic response of the system. Experiments are carried out to verify the simulation results. These results would be useful for fault diagnosis of wind turbine transmission system at different operation conditions.

Modal Prediction and Sensitivity Analysis of Wind-Turbine Planetary Gear System with Flexible Planet Pin

2011 ◽  
Vol 4 (3) ◽  
pp. 1219-1224 ◽  
Author(s):  
Cai-Chao Zhu ◽  
Xiang-Yang Xu ◽  
Hai-Jun Wang
Keyword(s):  
Sensitivity Analysis ◽  
Wind Turbine ◽  
Planetary Gear ◽  
Gear System ◽  
Planetary Gear System

Dynamic Response and Dynamic Load of Wind Turbine Planetary Gear Transmission System Under Changing Excitation

2011 ◽  
Vol 121-126 ◽  
pp. 2671-2675 ◽  
Author(s):  
Jun Yang ◽  
Li Ping Zhang
Keyword(s):  
Wind Turbine ◽  
Dynamic Load ◽  
External Load ◽  
Low Frequency ◽  
Planetary Gear ◽  
Transmission System ◽  
Gear System ◽  
Dynamic Factor ◽  
Variable Load ◽  
Planetary Gear System

The dynamic model of planetary gear system was built up with the consideration of the running characteristics of variable speed and variable load of wind turbine transmission system. The expression of dynamic factor which described by external change load and deformation vibration was studied. Then, the response characteristics and dynamic load of planetary gear system of wind turbine have been studied with the consideration of changing external load and time-varying stiffness, mesh phase and nonlinear stiffness of bearing. The results show that: the frequency response of system reflects the low frequency component of external load. The influence of external incentives on sun gear and planet gear is very significant, and the distinguish between low frequency vibration and high frequency vibration is obvious. The flexibility of system has an obvious impact on dynamic load of bearing. The results lay a foundation for strength design and fatigue analysis of wind turbine gearbox.

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