Catalogue | Flanders Marine Institute
 

Flanders Marine Institute

Platform for marine research

Catalogue

This search interface gives access to the reference database of VLIZ, an extensive collection of (inter)national marine scientific literature references.

You can limit your search to the Belgian marine literature only or to the VLIZ Library catalogue only by checking the 'VLIZ Library' box.

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

Modal identification of time-varying systems using simulated responses on wind turbines
Bertha, M.; Mayorga Rios, J.P.; Golinval, J.-C. (2012). Modal identification of time-varying systems using simulated responses on wind turbines, in: Proceedings of ISMA2012 including USD2012. pp. 4285-4296
In: (2012). Proceedings of ISMA2012 including USD2012. Katholieke Universiteit Leuven: Heverlee. ISBN 9789073802896. , more

Available in  Authors 
Document type: Conference paper

Authors  Top 
  • Bertha, M.
  • Mayorga Rios, J.P.
  • Golinval, J.-C.

Abstract
    Wind turbines are good examples of time-varying systems as their modal properties depend on their instantaneous configuration. To catch the variations of modal parameters in time-varying systems, classical identification methods have to be adapted to the non-stationary nature of the recorded signals. In this paper, it is proposed to study the dynamic behavior of an offshore five-megawatt wind turbine. First, a numerical model of the wind turbine is created to serve as reference. Then, the time-varying behavior of the system is evaluated by simulating a large number of possible configurations. To this purpose, time responses are generated from the numerical model submitted to different environmental conditions. The wind is considered as the main non-measured external excitation force on the structure and the responses are recorded at several locations to simulate a real measurement process. Special care is brought to the accessibility of the measurement locations and to the limited number of available sensors in practice. Using these simulated measurements, output-only identification methods are used to extract varying dynamic properties of the structure. The final objective of this work is to pave the way to online condition monitoring of wind turbines.

All data in IMIS is subject to the VLIZ privacy policy Top | Authors