At sea experiment of a hybrid spar for floating offshore wind turbine using 1/10-scale model

Tomoaki Utsunomiya, Hidekazu Matsukuma, Shintaro Minoura, Kiyohiko Ko, Hideki Hamamura, Osamu Kobayashi, Iku Sato, Yoshihisa Nomoto, Kentaro Yasui

研究成果: ジャーナルへの寄稿学術誌査読

32 被引用数 (Scopus)


This study aims at development of a cost-effective, floating offshore wind turbine. The prototype model considered herein is composed of (1) 2-MW horizontal-axis wind turbine (HAWT) of downwind type, (2) steel monotower with 55-m hub height above sea level, (3) steel-prestressed concrete (PC) hybrid SPAR-type foundation with 70-m draft, and (4) catenary mooring system using anchor chains. In order to demonstrate the feasibility of the concept, an at-sea experiment using a 1/10-scale model of the prototype has been made. The demonstrative experiment includes (1) construction of the hybrid SPAR foundation using PC and steel, the same as the prototype; (2) dry-towing and installation to the at-sea site at 30-m distance from the quay of the Sasebo shipbuilding yard; (3) generating electric power using a 1 kW HAWT; and (4) removal from the site. During the at-sea experiment, wind speed, wind direction, tidal height, wave height, motion of the SPAR, tension in a mooring chain, and strains in the tower and the SPAR foundation have been measured. Motion of the SPAR has been numerically simulated and compared with the measured values, where basically good agreement is observed.

ジャーナルJournal of Offshore Mechanics and Arctic Engineering
出版ステータス出版済み - 8月 2013

!!!All Science Journal Classification (ASJC) codes

  • 海洋工学
  • 機械工学


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