Frequency response model and mechanism for wind turbine planetary gear train vibration analysis

2016 ◽  
Vol 11 (4) ◽  
pp. 425-432 ◽  
Author(s):  
Guolin He ◽  
Kang Ding ◽  
Weihua Li ◽  
Yongzhuo Li
Keyword(s):  
Wind Turbine ◽  
Frequency Response ◽  
Vibration Analysis ◽  
Planetary Gear ◽  
Gear Train ◽  
Response Model ◽  
Planetary Gear Train ◽  
Train Vibration

scholarly journals Power Flow Analysis on the Dual Input Transmission Mechanism of Small Wind Turbine Systems

2020 ◽  
Vol 10 (20) ◽  
pp. 7333
Author(s):  
Ah-Der Lin ◽  
Tsung-Pin Hung ◽  
Jao-Hwa Kuang ◽  
Hsiu-An Tsai
Keyword(s):  
Wind Turbine ◽  
Power Flow ◽  
Planetary Gear ◽  
Synchronous Generator ◽  
Transmission Mechanism ◽  
Gear Train ◽  
Dynamic Responses ◽  
Planetary Gear Train ◽  
Dynamic Power ◽  
Wind Turbine System

A parallel planetary gear train design is proposed to construct the wind turbine system that has double inputs and one output. The proposed system is flexible for the application, which may use a combination of two rotors, as used for horizontal axis or vertical axis wind turbines. The proposed transmission mechanism merges the dual time varied input wind powers to a synchronous generator. The effect of the gear train parameters on the dynamic power flow variation is modeled and simulated for the proposed wind turbine system. Results indicate the proposed planetary gear train system is a feasible and efficient design for its application to wind turbine systems. The dynamic torque equilibrium equations between meshed gear pairs are employed to analyze the dynamic power flow. The nonlinear behavior of a synchronous generator is also included in the modeling. The dynamic responses of the dual input transmission mechanism are simulated using the 4th order Runge–Kutta method. The study also investigates the effect of system parameters used in this wind turbine system (i.e., the wind speed, the magnetic flux synchronous generator, and the inertia of flywheels) on variations in electrical power output.

scholarly journals Modelling and Simulation of Frequency Response on Input shaft/carrier of a Planetary Gear Train under the Influence of Vibration

2021 ◽  
Vol 25 (4) ◽  
pp. 591-598
Author(s):  
E.M. Etuk ◽  
R.S. Ebhojiaye ◽  
K.R. Ekanem
Keyword(s):  
Frequency Response ◽  
Natural Frequency ◽  
Frequency Analysis ◽  
Planetary Gear ◽  
Contact Forces ◽  
Gear Train ◽  
Mode Shapes ◽  
Planetary Gear Train ◽  
Input Shaft ◽  
Safe Working Condition

The transmission of motion from one gear to the other in a planetary gear train usually result in unwanted conditions such as vibration due to poor gear assembly, high contact forces, high rotation speeds etc. The vibrating effect of the gear can result in higher or lower frequency response which may damage the gear or offer safe working condition. Using SOLIDWORKS 2018 version for the modelling, SimulationXpress was used to conduct frequency analysis on input shaft/carrier of a planetary gear train to understand its behaviour at different mode shapes during vibration. Results obtain from the input shaft/carrier frequency analysis showed natural frequency values of 1922.4Hz, 1922.8Hz, 2101Hz, 2183.1Hz and 2185.3Hz for mode shape 1-5. Geometry of the input shaft/carrier appeared differently at each mode number, resulting in frequency responses characterised by different modal shapes. This also led to gradual increase in the natural frequency of the input shaft/carrier at increasing mode no, consequently causing deflection on the mode shapes of the input shaft/carrier model. Hence, vibration should be reduced to the lowest limit of tolerance for minimum deflections and longevity of the input shaft/carrier and planetary gear components.

Fatigue failure mechanism of planetary gear train for wind turbine gearbox

2018 ◽  
Vol 87 ◽  
pp. 96-110 ◽  
Author(s):  
Gang Shen ◽  
Dong Xiang ◽  
Kan Zhu ◽  
Li Jiang ◽  
Yinhua Shen ◽  
...  
Keyword(s):  
Wind Turbine ◽  
Failure Mechanism ◽  
Fatigue Failure ◽  
Planetary Gear ◽  
Gear Train ◽  
Wind Turbine Gearbox ◽  
Planetary Gear Train

Design and Application of a Planetary Gearbox for Small Wind Turbines

2012 ◽  
Vol 271-272 ◽  
pp. 818-822 ◽  
Author(s):  
Sung Hoon Park ◽  
Hyun Dai Yang ◽  
Jee Ho Kim ◽  
Joong Ho Shin
Keyword(s):  
Wind Turbine ◽  
Planetary Gear ◽  
Concentric Circle ◽  
Gear Train ◽  
Ring Gear ◽  
Planetary Gear Train ◽  
Planetary Gearbox ◽  
Input And Output ◽  
High Acceleration ◽  
Small Wind Turbines

A planetary gear train consists of a sun gear, planet gears, and a ring gear and these gears are arranged as a concentric circle type. The gearbox proposed in this study arranges the planetary gear type as a double planetary gear train in which the output of the primary gear train is used as an input to the secondary planetary gear for accelerating its speed. In this design, a method that directly connects the input and output sections is introduced to obtain a high acceleration ratio and its applicability is verified for applying it to a small wind turbine through designing and fabricating the planetary gearbox.

Dynamic Characteristics of Double Helical Planetary Gear Train With Tooth Friction

2015 ◽  
Author(s):  
Fengxia Lu ◽  
Rupeng Zhu ◽  
Haofei Wang ◽  
Heyun Bao ◽  
Miaomiao Li
Keyword(s):  
Degrees Of Freedom ◽  
Sliding Friction ◽  
Planetary Gear ◽  
Gear Train ◽  
Variable Step Size ◽  
Step Size ◽  
Planetary Gear Train ◽  
Gear Mesh ◽  
Meshing Stiffness ◽  
Nonlinear Dynamics Model

A new nonlinear dynamics model of the double helical planetary gear train with 44 degrees of freedom is developed, and the coupling effects of the sliding friction, time-varying meshing stiffness, gear backlashes, axial stagger as well as gear mesh errors, are taken into consideration. The solution of the differential governing equation of motion is solved by variable step-size Runge-Kutta numerical integration method. The influence of tooth friction on the periodic vibration and nonlinear vibration are investigated. The results show that tooth friction makes the system motion become stable by the effects of the periodic attractor under the specific meshing frequency and leads to the frequency delay for the bifurcation behavior and jump phenomenon in the system.

Dynamics of the Gear Train Set in Wind Turbine

2011 ◽  
Vol 697-698 ◽  
pp. 701-705
Author(s):  
D.D. Ji ◽  
Y.M. Song ◽  
J. Zhang
Keyword(s):  
Wind Turbine ◽  
Dynamic Model ◽  
Harmonic Balance Method ◽  
Planetary Gear ◽  
Gear Train ◽  
Dynamic Responses ◽  
Multi Stage ◽  
Lumped Parameter ◽  
Cartesian Coordinate ◽  
The Impact

A lumped-parameter dynamic model for gear train set in wind turbine is proposed to investigate the dynamics of the speed-increasing gear box. The proposed model is developed in a universal Cartesian coordinate, which includes transversal and torsional deflections of each component, time-varying mesh stiffness, gear profile errors and external excitations. By solving the dynamic model, a modal analysis is performed. The results indicate that the modal properties of the multi-stage gear train in wind turbine are similar to those of a single-stage planetary gear set. A harmonic balance method (HBM) is used to obtain the dynamic responses of the gearing system. The responses give insight into the impact of excitations on the vibrations.

Sign in / Sign up

Export Citation Format

Share Document