Resonance phenomenon in a wind turbine system under operational conditions
(2014) 9th International Conference on Structural Dynamics, EURODYN 2014 In Proceedings of the International Conference on Structural Dynamic , EURODYN 2014-January. p.3619-3626- Abstract
A prototype of wind turbines in 5 megawatt class was built and tested at the first German offshore wind energy test field in the North Sea. In order to investigate dynamic behaviors under a complex state of loads, a continuous dynamic monitoring system was implemented by Federal Institute for Material Research and Testing (BAM). It recorded structural responses and environmental/operational variables from November 2007 to October 2009. This paper presents significant resonance phenomenon due to the interaction in the tower-nacelle system under operational conditions. Modal parameters are automatically estimated by the poly reference Least Square Complex Frequency domain (p-LSCF) method. Campbell plot demonstrates that a three-blade... (More)
A prototype of wind turbines in 5 megawatt class was built and tested at the first German offshore wind energy test field in the North Sea. In order to investigate dynamic behaviors under a complex state of loads, a continuous dynamic monitoring system was implemented by Federal Institute for Material Research and Testing (BAM). It recorded structural responses and environmental/operational variables from November 2007 to October 2009. This paper presents significant resonance phenomenon due to the interaction in the tower-nacelle system under operational conditions. Modal parameters are automatically estimated by the poly reference Least Square Complex Frequency domain (p-LSCF) method. Campbell plot demonstrates that a three-blade passage frequency and its multiples f3n match with the natural frequencies of the wind turbine system in several modal orders. The damping estimates decrease and the vibration amplitude increase significantly. A control system is necessary to minimize the excessive vibrations.
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- author
- Hu, Wei Hua ; Thöns, Sebastian LU ; Said, Samir and Rücker, Werner
- publishing date
- 2014-01-01
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- Automated operational modal analysis, Continuous dynamic monitoring, Resonance, Tower-nacelle system, Wind turbine
- host publication
- Proceedings of the 9th International Conference on Structural Dynamics, EURODYN 2014
- series title
- Proceedings of the International Conference on Structural Dynamic , EURODYN
- editor
- Cunha, A. ; Ribeiro, P. ; Caetano, E. and Muller, G.
- volume
- 2014-January
- pages
- 8 pages
- publisher
- European Association for Structural Dynamics
- conference name
- 9th International Conference on Structural Dynamics, EURODYN 2014
- conference location
- Porto, Portugal
- conference dates
- 2014-06-30 - 2014-07-02
- external identifiers
-
- scopus:84994476934
- ISSN
- 2311-9020
- ISBN
- 9789727521654
- language
- English
- LU publication?
- no
- id
- e504a8ef-5360-4cac-b0ce-5822f44e9990
- date added to LUP
- 2020-09-09 10:21:55
- date last changed
- 2022-02-01 08:30:44
@inproceedings{e504a8ef-5360-4cac-b0ce-5822f44e9990,
abstract = {{<p>A prototype of wind turbines in 5 megawatt class was built and tested at the first German offshore wind energy test field in the North Sea. In order to investigate dynamic behaviors under a complex state of loads, a continuous dynamic monitoring system was implemented by Federal Institute for Material Research and Testing (BAM). It recorded structural responses and environmental/operational variables from November 2007 to October 2009. This paper presents significant resonance phenomenon due to the interaction in the tower-nacelle system under operational conditions. Modal parameters are automatically estimated by the poly reference Least Square Complex Frequency domain (p-LSCF) method. Campbell plot demonstrates that a three-blade passage frequency and its multiples f3n match with the natural frequencies of the wind turbine system in several modal orders. The damping estimates decrease and the vibration amplitude increase significantly. A control system is necessary to minimize the excessive vibrations.</p>}},
author = {{Hu, Wei Hua and Thöns, Sebastian and Said, Samir and Rücker, Werner}},
booktitle = {{Proceedings of the 9th International Conference on Structural Dynamics, EURODYN 2014}},
editor = {{Cunha, A. and Ribeiro, P. and Caetano, E. and Muller, G.}},
isbn = {{9789727521654}},
issn = {{2311-9020}},
keywords = {{Automated operational modal analysis; Continuous dynamic monitoring; Resonance; Tower-nacelle system; Wind turbine}},
language = {{eng}},
month = {{01}},
pages = {{3619--3626}},
publisher = {{European Association for Structural Dynamics}},
series = {{Proceedings of the International Conference on Structural Dynamic , EURODYN}},
title = {{Resonance phenomenon in a wind turbine system under operational conditions}},
volume = {{2014-January}},
year = {{2014}},
}