Modal identification of a wind turbine before and after the extension of the blades

• Type: Article in International Conference Proceedings Book
• Date: 2015

Authors

Oliveira, G (Author) Other; Magalhães, F. (Author) FEUP; Cunha, A. (Author) FEUP; Matos, JC (Author) Other

Conference proceedings International

Title: IABSE Conference, Geneva 2015: Structural Engineering: Providing Solutions to Global Challenges - Report

Pages: 288-297

IABSE Conference, Geneva 2015: Structural Engineering: Providing Solutions to Global Challenges

23 September 2015 through 25 September 2015

Indexing

Scopus - 0 Citations

Other information

Authenticus ID: P-00K-H3K

Abstract (EN): The paper describes the study of the dynamic properties of a 1,3 MW wind turbine Izar Bonus 62 using two different measurement types: accelerations and strains. The blades of this wind turbine were fitted with 1,5 m extensions with the purpose of increasing the wind turbine's swept area enabling it to capture further wind energy. The main objective of the study was to identify the modal properties of the rotor and tower (natural frequencies, damping ratios and mode shapes) before and after the extension of the blades in order to compare with the results from numerical analysis and to evaluate the possibility of appearance of resonance problems. With this purpose, ambient vibration tests and a rotor-stop test were conducted and the results obtained before and after the extension were analyzed in order to validate the adequate performance of the wind turbine after extension of the rotor blades.

Language: English

Type (Professor's evaluation): Scientific