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成果報告書詳細
管理番号20170000000443
タイトル*平成28年度中間年報 風力発電等技術研究開発 洋上風力発電等技術研究開発 次世代浮体式洋上風力発電システム実証研究(共通基盤調査)
公開日2017/7/6
報告書年度2016 - 2016
委託先名国際航業株式会社 株式会社風力エネルギー研究所 国立大学法人東京大学
プロジェクト番号P14022
部署名新エネルギー部
和文要約
英文要約Title: Interim annual report in 2016 of fundamental research project as for the wind-turbine systems, for the technology research development and the offshore wind-turbine system, it is the common ground study into technology research development and empirical research for next-generation floating offshore wind-turbine systems.

This research is to be examined from the viewpoint of low cost and cost effectiveness, and contributes to the progress of international competitiveness of our country. The outcomes on this research are twelve contents as below.

(1)The latest technical information and challenges concerning wind turbine components on floating offshore wind turbine were investigated and summarized through a review of related papers and participation in DeepWind2017 which is an international conference on offshore wind turbines in deep water.
(2)Through investigating past literature on technical issues related to “support structure” and “construction and execution,” the respective features and technical issues of the semi-submersible type, pontoon type, TLP type, and spar type floating wind turbines were clarified.
(3)To assist selection of the optimal floater type, coupled analysis on “wind turbine ‐ floater ‐ mooring” was implemented on different floater types (semi-submersible type, pontoon type, TLP type, spar type), and the floater response and mooring line tension were demonstrated.
(4) FAST analysis on four different floating wind turbines were implemented on the Damage Equivalent Fatigue Load (DEFL) estimation on DLC1.2 and ultimate load estimation on DLC6.1 and DLC6.2 for major wind turbine components. Comparison study with land-based wind turbine was also conducted on four different water depths.
(5)Mooring line fatigue assessment was implemented on the different floater types. As a result of assessing mooring fatigue with respect to waves, it was shown that life performance differs in a great order according to the floater.
(6) Regarding the mechanical analysis by ADAMS drive train model for semi-submersible type and pontoon type, the main bearing load and planetary gear load were compared and estimated with the load of land-based wind turbine.
(7)Based on the results of motion analysis, the performance and cost of each floater type were qualitatively evaluated. Also, referring to actual plans for semi-submersible type and pontoon type systems, the necessary parameters for assessing the cost of floater structures were extracted.
(8)Wind turbine costs and necessary parameters were summarized with reviewing cost analysis of reference 5MW wind turbine by NREL.
(9)To ensure the certain advancement of the experimental study, the technical committee meetings were continued from the previous year. Also, to expedite creation of a technical guidebook, the guidebook working group was newly established during the year.
(10)Homepage composition, content, and pamphlet contents were reviewed in discussions with the experimental study team.
(11)The flow for designing the floating offshore wind power facilities was organized and compiled into the design flow drawing. Based on the contents of the design flow drawing, the contents of the technical guidebook main text were reviewed.
(12)Parts of the first and second section of the technical guidebook main text were drafted.
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