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成果報告書詳細
管理番号20170000000099
タイトル*平成27年度中間年報 海洋エネルギー技術研究開発 次世代海洋エネルギー発電技術研究開発 橋脚・港湾構造物利用式潮流発電
公開日2017/4/27
報告書年度2015 - 2015
委託先名中国電力株式会社 学校法人鶴学園広島工業大学
プロジェクト番号P07015
部署名新エネルギー部
和文要約
英文要約(1)Construction of tidal current power generation system
Considering costs and weight of the equipment, we adopted the combination of the magnetic gear and the flat permanent magnet generator. The control system has track records in our small wind turbine generator systems. Taking into account sea pollution and maintainability, we adopted a local cooling system of the equipment using seawater. In addition, we clarified failure modes caused by tidal current with over velocity by FMEA and examined each constitution with and without a brake.
To secure the coaxially of the generator, transmission mechanism, and the water turbine, study on the method of connecting them and the structure of the frame was carried out.

(2) Development of vertical axis dynamic lift turbine
Optimum turbine configuration candidate were selected by CFD analysis and water tunnel experiments.
By FEM analysis, comparison of the stresses of the two types of blades was carried out. And the physical property of CFRP was obtained by material evaluation tests.
Evaluation tests of the sliding bearings and the mechanical seal ware carried out.
Red-barnacle was identified as primal periphyton species which cause problem in tidal current region by literature. For confirmation of the validity of the literature survey results, comparison of the periphyton species at Oshima Bridge and power plant near Oshima Bridge was conducted.

(3) Development of non-contact power transmission mechanism
Magnetic coupling type and magnetic gear type are evaluated for the possibility of transmission through bulkhead. In the result, basic characteristics of non-contact power transmission mechanism was obtained from numerical analysis and evaluation test. Transmission efficiency of power transmission was confirmed more than 90% in the seawater evaluation test.

(4)Invention of reasonable design and construction method for the tidal current power generation facility on offshore structures
We had targeted Oshima Bridge as a project candidate, and arranged and designed the primary parts size of the foundation structure.
The total construction planning had been decided. Specifically, selection of ships and machines, prediction of the realistic construction process and summary construction costs.

(5) Feasibility verification of the power generation from tidal current using bridge pier and port structures
A tidal current was observed for cost evaluation of tidal current power generation using bridge pier and harbor structures in Setoda-channel and Tatara-Seto. Additionally we investigated a tidal energy resource around the pier of the Oshima Bridge for the feasibility value of tidal current power generation.
It was explained about tidal current power generation technology and Environmental impact assessment from the social-economical viewpoint to the local authority. And we reached a consensus with cooperation to field survey and participation in workshop for the feasibility value of tidal current power generation.
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