Design of a New Foundation for Offshore Wind Turbines

Lars Bo Ibsen, Rune Brincker

Publikation: Bidrag til bog/antologi/rapport/konference-proceedingKonferencebidrag i proceedingsForskningpeer review

Resumé

 The gravitation platform and the monopile have in the previous major offshore wind turbine projects been dominating. A four-year research and development project has proven the bucket foundation to be feasible in suitable soil condition in water depth from near shore to app. 40 meters. A prototype was installed at the test field in Frederikshavn in late 2003, with a 3 MW wind turbine in normal operation. The R&D work is continued the complete the bucket concept and having the design standards for the construction and installation methodologies recognised. The design saves about half of the steel weight as compared to a traditional pile foundation, it is much easier to install and it can easily be removed when the wind turbine is taken down. However, the new design is suffering from uncertainties in the accumulated fatigue in the both the steel structure and the surrounding earth material. Therefore an on-line monitoring system has been utilized on the 80 m high operating test 3 MW wind turbine. It is explained how the system is being used to obtain mode shapes and modal parameters during different operating conditions, and how the response measurements are being used to improve the estimation of fatigue.
OriginalsprogEngelsk
TitelProceedings of IMAC-22 : A Conference on Structural Dynamics, January 26 - 29, 2004, Hyatt Regency Dearborn, Dearborn, Michigan, USA
ForlagSociety for Experimental Mechanics
Publikationsdato2004
Sider359-366
StatusUdgivet - 2004
Udgivet eksterntJa
BegivenhedThe International Modal Analysis Conference - Dearborn, Michigan, USA
Varighed: 26. jan. 200429. jan. 2004
Konferencens nummer: 22

Konference

KonferenceThe International Modal Analysis Conference
Nummer22
LandUSA
ByDearborn, Michigan
Periode26/01/200429/01/2004

Fingeraftryk

Offshore wind turbines
Wind turbines
Fatigue of materials
Pile foundations
Steel structures
Application programs
Gravitation
Earth (planet)
Soils
Steel
Monitoring
Water

Bibliografisk note

Udgivet på tryk samt cd-rom

Citer dette

Ibsen, L. B., & Brincker, R. (2004). Design of a New Foundation for Offshore Wind Turbines. I Proceedings of IMAC-22: A Conference on Structural Dynamics, January 26 - 29, 2004, Hyatt Regency Dearborn, Dearborn, Michigan, USA (s. 359-366). Society for Experimental Mechanics.
Ibsen, Lars Bo ; Brincker, Rune. / Design of a New Foundation for Offshore Wind Turbines. Proceedings of IMAC-22: A Conference on Structural Dynamics, January 26 - 29, 2004, Hyatt Regency Dearborn, Dearborn, Michigan, USA. Society for Experimental Mechanics, 2004. s. 359-366
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abstract = "The gravitation platform and the monopile have in the previous major offshore wind turbine projects been dominating. A four-year research and development project has proven the bucket foundation to be feasible in suitable soil condition in water depth from near shore to app. 40 meters. A prototype was installed at the test field in Frederikshavn in late 2003, with a 3 MW wind turbine in normal operation. The R&D work is continued the complete the bucket concept and having the design standards for the construction and installation methodologies recognised. The design saves about half of the steel weight as compared to a traditional pile foundation, it is much easier to install and it can easily be removed when the wind turbine is taken down. However, the new design is suffering from uncertainties in the accumulated fatigue in the both the steel structure and the surrounding earth material. Therefore an on-line monitoring system has been utilized on the 80 m high operating test 3 MW wind turbine. It is explained how the system is being used to obtain mode shapes and modal parameters during different operating conditions, and how the response measurements are being used to improve the estimation of fatigue.",
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Ibsen, LB & Brincker, R 2004, Design of a New Foundation for Offshore Wind Turbines. i Proceedings of IMAC-22: A Conference on Structural Dynamics, January 26 - 29, 2004, Hyatt Regency Dearborn, Dearborn, Michigan, USA. Society for Experimental Mechanics, s. 359-366, The International Modal Analysis Conference, Dearborn, Michigan, USA, 26/01/2004.

Design of a New Foundation for Offshore Wind Turbines. / Ibsen, Lars Bo; Brincker, Rune.

Proceedings of IMAC-22: A Conference on Structural Dynamics, January 26 - 29, 2004, Hyatt Regency Dearborn, Dearborn, Michigan, USA. Society for Experimental Mechanics, 2004. s. 359-366.

Publikation: Bidrag til bog/antologi/rapport/konference-proceedingKonferencebidrag i proceedingsForskningpeer review

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Ibsen LB, Brincker R. Design of a New Foundation for Offshore Wind Turbines. I Proceedings of IMAC-22: A Conference on Structural Dynamics, January 26 - 29, 2004, Hyatt Regency Dearborn, Dearborn, Michigan, USA. Society for Experimental Mechanics. 2004. s. 359-366