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Development of Mega Platform Technology for Large Scale Deployment of Offshore Wind Turbines

Research Project

Project/Area Number 20H02367
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 24020:Marine engineering-related
Research InstitutionOsaka University

Principal Investigator

Iijima Kazuhiro  大阪大学, 大学院工学研究科, 教授 (50302758)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥16,770,000 (Direct Cost: ¥12,900,000、Indirect Cost: ¥3,870,000)
Fiscal Year 2022: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2021: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Fiscal Year 2020: ¥7,540,000 (Direct Cost: ¥5,800,000、Indirect Cost: ¥1,740,000)
Keywords浮体式洋上風車 / 巨大プラットフォーム / 流力弾性 / 複合荷重応答 / 連成応答解析 / 非線型波 / 巨大洋上プラットフォーム / 浮体式風車 / デジタルツイン / カルマンフィルタ / 非線形波 / 構造モニタリング / メンテナンス / 建造シミュレーション / ウィンドファーム / デジタルツイン技術
Outline of Research at the Start

本研究では、巨大プラットフォーム上に洋上風車を複数機搭載し、ウィンドファーム化する場合の技術課題を摘出し、解決を図る。洋上風車を大規模に展開する際、ひとつの浮体プラットフォームに1基の風車を搭載する代わりに、多数の風車を搭載することで風車一基あたりの建造設置コスト・オペレーションコストを革新的に低減できることが期待される。巨大プラットフォームに係る技術課題として、建造法、メンテナンス技術、応答解析技術を挙げる。特に注力するのは巨大プラットフォームの構造モニタリングによるメンテナンス技術開発である。シミュレーションと観測を同化し、巨大プラットフォームで生じていることを把握し管理に活かす。

Outline of Final Research Achievements

The objective of this research project is to identify and solve technical issues in the case of deploying a large platform of the order of a few kilo-meters maximum for a large wind farm with floating offshore wind turbines. The following three major elemental studies were conducted: (1) simulation of floating structure under construction, using hydroelastic response analysis code and considering non-uniformity of the structures, (2) investigation of maintenance techniques using digital twin technology for response estimation and future prediction, and (3) clarification of the nonlinear behavior of large platforms under large extreme waves by using tank test measurement and theoretical developments. The possibility of simulating the building process of offshore platforms and O&M technology with digital twin technology was highlighted and demonstrated. In addition, the necessary analysis codes for each were developed.

Academic Significance and Societal Importance of the Research Achievements

内閣府により策定された第3期海洋基本計画は、洋上風力発電のポテンシャルの大きさを指摘し、洋上風力の最大限導入拡大と国民負担の抑制を両立するべく、発電コストを一層低減させつつ、更なる導入拡大を図ることを謳っている。2023年に第4期の海洋基本計画が閣議決定され、洋上風力発電所の設置場所をEEZまで広げる法整備を進めると明記された。今後、洋上風車ウィンドファームの実証プロジェクトが実現してくるものと思われる.本課題研究はウィンドファームへの巨大プラットフォーム利用を検討し,O&M基地の可能性を指摘した。研究の成果はEEZにおけるウィンドファーム展開にも役立つものと考えられる。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (11 results)

All 2022 2021 2020

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 1 results) Presentation (8 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] DIC measurement of deflection waves travelling along a thin flexural plate floating at water surface2022

    • Author(s)
      Iijima, K, Ma, C, Pambela, A.R., Maeda, T.
    • Journal Title

      Ocean Engineering

      Volume: 266(4) Pages: 113079-113079

    • DOI

      10.1016/j.oceaneng.2022.113079

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A spectral approach for efficient fatigue damage evaluation of floating support structure for offshore wind turbine taking account of aerodynamic coupling effects2022

    • Author(s)
      Adilah Ahmad and Iijima Kazuhiro
    • Journal Title

      Journal of Marine Science and Technology

      Volume: 27 Issue: 1 Pages: 408-421

    • DOI

      10.1007/s00773-021-00841-x

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Discussion on Coupling Effect in Structural Load of FOWT for Condensing Wind and Wave Bins for Spectral Fatigue Analysis2020

    • Author(s)
      Tomoya Inoue, Ahmad Adilah, Kazuhiro Iijima, Sho Oh and Hideyuki Suzuki
    • Journal Title

      Journal of Marine Science and Engineering

      Volume: 8 Issue: 11 Pages: 937-937

    • DOI

      10.3390/jmse8110937

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Real-time wave prediction for floating offshore wind turbine based on the Kalman filter2022

    • Author(s)
      Isnaini, R, Toichi, K., Tatsumi, A., Iijima, K
    • Organizer
      5th International Conference on Renewable Energies Offshore
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Wind and Wave Identification from Response Measurement on a Floating Wind Turbine2022

    • Author(s)
      Toichi, K, Watanabe, Y, Tatsumi, A, Ishigami, Y, Matsuoka, R, Iijima, K
    • Organizer
      Global Conference on Naval Architecture and Ocean Engineering
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Neural Networkによる洋上浮体式風車に作用する環境荷重の推定2022

    • Author(s)
      渡邉 遊
    • Organizer
      船舶海洋工学会学生研究発表会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Development of Cnoidal Wave theory for long floating plate2022

    • Author(s)
      Soe Sandar Kyaw
    • Organizer
      船舶海洋工学会学生研究発表会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 大型洋上風車に関する構造応答解析に関する研究2022

    • Author(s)
      塚本晃司
    • Organizer
      船舶海洋工学会学生研究発表会
    • Related Report
      2022 Annual Research Report
  • [Presentation] REAL-TIME PREDICTION OF INCOMING WAVE PROFILE SURROUNDING FLOATING OFFSHORE WIND TURBINE USING KALMAN FILTER2022

    • Author(s)
      Isnaini, R., Toichi, K., Iijima, K. and Tatsumi, A.
    • Organizer
      OMAE2022, ASME
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 風・波複合場でのセミサブ型浮体式風車の応答評価実験における空力荷重特性のモデル化に関する研究2021

    • Author(s)
      井上知哉、飯島一博、Adilah Ahmad、原健太郎、福王翔、鈴木英之
    • Organizer
      日本船舶海洋工学会春季講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Evaluation of Long-term Fatigue Damage in a Semisubmersible Floating Structure Supporting Wind Turbine2021

    • Author(s)
      Adilah Ahmad, 井上知哉、飯島一博
    • Organizer
      日本船舶海洋工学会春季講演会
    • Related Report
      2020 Annual Research Report

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Published: 2020-04-28   Modified: 2024-01-30  

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