Proceedings ArticleDOI
Dynamic analysis and characterization of two stage epicyclic gear box in wind turbine drive train
Ch v h Gayatri,A. S. Sekhar +1 more
- Vol. 2044, Iss: 1, pp 020018
TLDR
The coupled torsional and bending model of 22 degrees of freedom is solved for vibration responses in time domain using Newmark time algorithm and the Fast Fourier Transformation (FFT) on a time signal is applied.Abstract:
This paper studies the dynamic analysis and characterization of two-stage planetary gear transmission system for wind turbine drive train under random loads. Rigid multi body dynamics with discrete flexibility is used for modeling the wind turbine drive train. Variable gear mesh stiffness, bearings and shaft stiffness are accounted in this model. The derivation of the system governing equation by Lagrange approach requires the formulation of kinetic and potential energies. The coupled torsional and bending model of 22 degrees of freedom is solved for vibration responses in time domain using Newmark time algorithm. Applying the Fast Fourier Transformation (FFT) on a time signal, vibration responses in frequency domain are obtained and further studied for wind turbine drive train characteristics. To identify the wind characteristics at low frequencies, wavelet decomposition is used.read more
Citations
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Journal ArticleDOI
Various power transmission strategies in wind turbine: an overview
Anil C. Mahato,Sanjoy K. Ghoshal +1 more
TL;DR: Various schemes on the hybrid power transmission system in wind turbine system are addressed in a chronological order, however, the aerodynamics and the electrical transmission of the wind turbine are excluded from the discussion.
Book ChapterDOI
Diagnosis Methods for Mechatronic Systems
Syrine Derbel,Nabih Feki,Florentina Nicolau,Jean Pierre Barbot,Mohamed Slim Abbes,Mohamed Haddar +5 more
TL;DR: A classification of the most frequently used diagnosis methods based on the type of the redundancy: the hardware or the analytical redundancy is presented and a new diagnosis technique, called sparse recovery method, is proposed, based on a dynamical sparse recovery algorithm.
References
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Masanobu Shinozuka,C.-M. Jan +1 more
TL;DR: In this article, the authors presented an efficient method for digital simulation of general homogeneous processes as a series of cosine functions with weighted amplitudes, almost evenly spaced frequencies, and random phase angles.
Journal ArticleDOI
Nonlinear torsional vibrations of a wind turbine gearbox
Mingming Zhao,Jinchen Ji +1 more
TL;DR: In this article, the torsional vibrations of wind turbine gearbox having two planetary gear stages and one parallel gear stage were investigated by using the numerical integration method, and the effects of the static transmission error, mean-to-alternating force ratio and time-varying mesh stiffness on the dynamic behaviour of wind turbines gearbox components were investigated.
Journal ArticleDOI
Development of a 5 MW reference gearbox for offshore wind turbines
TL;DR: In this paper, the authors presented detailed descriptions, modeling parameters and technical data of a 5MW high-speed gearbox developed for the National Renewable Energy Laboratory offshore 5MW baseline wind turbine.
Journal ArticleDOI
Dynamic modeling and analysis of a wind turbine drivetrain using the torsional dynamic model
TL;DR: In this paper, a torsional multibody dynamic model for a horizontal axial wind turbine drivetrain was developed using the torsion multibore dynamic model, which consisted of a low-speed planetary gear stage (three identical planets with spur teeth, sun and fixed ring gears) and two high-speed spur gear stages.
Journal ArticleDOI
Flexible Multibody Dynamic Modeling of a Horizontal Wind Turbine Drivetrain System
TL;DR: In this article, a mathematical model of a horizontal wind turbine drivetrain is developed by applying the flexible multibody dynamics theory based on the Lagrange formulation, which accounts for the variation in the number of teeth in contact and support bearing elasticity, which are known to influence the dynamic behavior of drivetrain significantly.