15 MW급 부유식 해상풍력 하부구조물의 전주기 설계 검증 연구

초록

This study presents a full design cycle methodology for a 15 MW semi-submersible floating wind turbine substructure. 25 parametric models based on the VolturnUS-S platform, developed at the University of Maine and later adopted as the IEA 15 MW reference platform with support from National Laboratory of the Rockies(NLR), were evaluated using frequency-domain analysis, with design criteria including heave natural period, pitch angle, and rotor nacelle assembly(RNA) acceleration. The conceptual design model was validated through time-domain load analysis. The detailed structural design adhered to International Association of Classification Societies(IACS) Common Structural Rules(CSR) standards, and structural integrity was verified through finite element analysis at ultimate and fatigue limit states. This systematic approach provides a foundation for future optimization of large-scale floating wind structures.

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