Modal identification and fe model correlation of a wind turbine tower

• Type: Article in International Conference Proceedings Book
• Date: 2013

Authors

Oliveira, G (Author) Other; Magalhães, F. (Author) FEUP; Caetano, E. (Author) FEUP; Cunha, A. (Author) FEUP

Conference proceedings International

Title: 5th International Operational Modal Analysis Conference, IOMAC 2013

Pages: 1-10

5th International Operational Modal Analysis Conference, IOMAC 2013

Guimaraes, 13 May 2013 through 15 May 2013

Indexing

Scopus - 4 Citations

Other information

Authenticus ID: P-009-SWM

Abstract (EN): The need to fulfil the electrical demand with a cleaner energy has implied the development of new ways to take advantage of renewable energy sources. Among the most common renewable sources, the wind energy has shown to be a very reliable alternative to the fossil fuels. The development of this technology has led to new wind turbines with taller towers and larger blades. Besides these characteristics, the growing implementation of these flexible structures in offshore locations implicates a deep knowledge of their dynamic behaviour. In the present paper, the data collected during an ambient vibration test of a 2 MW 80 m wind turbine tower developed by the Laboratory of Vibrations and Structural Monitoring (ViBest, www.fe.up.pt/vibest) of FEUP is analysed in order to characterize the tower first vibration modes. The adopted measurement system consisted of a wireless solution based on 4 tri-axial seismographs and the collected data was processed with state of the art time and frequency domain modal identification methods. Alongside, a finite-element numerical model was developed with the purpose of correlating numerical and experimental results, obtaining at the end a reliable numerical model of the tower. Both the experimental and the numerical work were done in order to prepare the installation of a Continuous Dynamic Monitoring System.

Language: English

Type (Professor's evaluation): Scientific