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조철희 ( Chulhee Jo ),황수진 ( Sujin Hwang ),김명주 ( Myeongjoo Kim ),박홍재 ( Hongjae Park ) 한국신·재생에너지학회 2017 신재생에너지 Vol.13 No.4
With the increased focus on renewable energy in response to the global warming problem, tidal current power (TCP), one of the ocean energy resources, is acknowledged as an alternative energy source because of its high energy density, predictability and reliability. TCP devices are classified into gravity base type, pile fixed type, and floating type. Among them, the floating type can be applied without any limitation of water depth and has a simplified supporting structure. Since the behavior of the floater has a significant effect on the total power production rate, it is essential to minimize the power production loss and optimize the system efficiency. In order to maintain the optimal incidence angle of the flow to the turbine and to support the buoys, the motion response of the tidal power system was analyzed. DNV Wadam V 4.8-01 and OrcaFlex 10.1a were respectively used for the frequency and time domain analyses. The designed TCP system had pitching and yawing fluctuation values within about 0.5°.