Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
HORIZONTAL AXIS WIND TURBINE MODELLING USING MODAL APROACH FOR LOW FREQUENCY VIBRATION BEHAVIOR ANALYSIS
Submission Author:
Layse Freitas Boere de Moraes , SP , Brazil
Co-Authors:
Layse Freitas Boere de Moraes, Milton Dias Junior
Presenter: Layse Freitas Boere de Moraes
doi://10.26678/ABCM.COBEM2019.COB2019-1391
Abstract
The most effective strategy for reducing production cost of wind power is the wind turbine upscale. The unavoidable upscale of wind turbines generates serious vibrations problems which need to be studied to ensure safe operations under these conditions and to provide higher power generation efficiency at lower costs. This paper aims to model and simulate the low frequency vibrations behavior of a 5-MW horizontal wind turbine using the modal approach method. The technical specifications of an offshore 5-MW baseline wind turbine were provided by NREL internal report. The structural model was tested and validated by comparing modal characteristics from the authors simulation with the values given by this report. Furthermore, the animation of the wind turbine modal forms resulted in a good agreement with the modal forms presented by the literature.
Keywords
wind turbine, low frequency vibratory behavior, modal approach
