Design and Installation of a Hybrid-Spar Floating Wind Turbine Platform | Zendy

Tomoaki Utsunomiya | Zendy; Iku Sato | Zendy; Osamu Kobayashi | Zendy; Takashi Shiraishi | Zendy; Takashi Harada | Zendy

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Design and Installation of a Hybrid-Spar Floating Wind Turbine Platform

Author(s) -

Tomoaki Utsunomiya,

Iku Sato,

Osamu Kobayashi,

Takashi Shiraishi,

Takashi Harada

Publication year - 2015

Publication title -

qir (kyushu university institutional repository) (kyushu university)

Language(s) - English

Resource type - Conference proceedings

DOI - 10.1115/omae2015-41544

Subject(s) - spar , turbine , marine engineering , offshore wind power , wind power , precast concrete , engineering , submarine pipeline , structural engineering , mechanical engineering , geotechnical engineering , electrical engineering

A floating offshore wind turbine platform supporting a 2MW downwind-type turbine was successfully installed offshore of Kabashima Island, Goto city, Nagasaki prefecture, Japan on October 18, 2013. It has been operating since October 28, 2013 as the first grid-connected multi-megawatt floating wind turbine in Japan. The spar platform has a unique feature, that is, the upper part of the spar is made of steel (as usual) but the lower part is made of precast prestressed concrete (PC). Such a configuration is referred to as hybrid-spar. In this paper, the design methodology of the hybrid spar is presented — including environmental design conditions, DLCs (Design Load Cases), dynamic analysis, fatigue analysis, etc. Also, the installation procedure is presented briefly

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