Skip to main content

IMIS

A new integrated search interface will become available in the next phase of marineinfo.org.
For the time being, please use IMIS to search available data

 

[ report an error in this record ]basket (0): add | show Print this page

Automatic tracking of the modal parameters of an offshore wind turbine drivetrain system
El-Kafafy, M.; Devriendt, C.; Guillaume, P.; Helsen, J. (2017). Automatic tracking of the modal parameters of an offshore wind turbine drivetrain system. Energies (Basel) 10(4): 574. https://dx.doi.org/10.3390/en10040574
In: Energies (Basel). Molecular Diversity Preservation International (MDPI): Basel. ISSN 1996-1073; e-ISSN 1996-1073, more
Peer reviewed article  

Available in  Authors 

Keyword
    Marine/Coastal
Author keywords
    modal parameters; offshore wind turbine; drivetrain; tower modes; modetracking

Authors  Top 

Abstract
    An offshore wind turbine (OWT) is a complex structure that consists of different parts (e.g., foundation, tower, drivetrain, blades, et al.). The last decade, there has been continuous trend towards larger machines with the goal of cost reduction. Modal behavior is an important design aspect. For tackling noise, vibration, and harshness (NVH) issues and validating complex simulation models, it is of high interest to continuously track the vibration levels and the evolution of the modal parameters (resonance frequencies, damping ratios, mode shapes) of the fundamental modes of the turbine. Wind turbines are multi-physical machines with significant interaction between their subcomponents. This paper will present the possibility of identifying and automatically tracking the structural vibration modes of the drivetrain system of an instrumented OWT by using signals (e.g., acceleration responses) measured on the drivetrain system. The experimental data has been obtained during a measurement campaign on an OWT in the Belgian North Sea where the OWT was in standstill condition. The drivetrain, more specifically the gearbox and generator, is instrumented with a dedicated measurement set-up consisting of 17 sensor channels with the aim to continuously track the vibration modes. The consistency of modal parameter estimates made at consequent 10-min intervals is validated, and the dominant drivetrain modal behavior is identified and automatically tracked.

All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy Top | Authors