Hybrid Tidal-Wave Systems with Advanced Materials for Efficient and Durable Renewable Ocean Energy
Keywords:
Hybrid wave-tidal, ocean renewable energy, composite materials, corrosion protection,, semi-submersible platform, FloWave, techno-economic analysisAbstract
Hybrid marine energy systems combine wave and tidal converters to increase capacity factor and smooth power output by exploiting complementary ocean resources. Advanced composite and corrosion-resistant materials are critical for durable platforms and structures in harsh marine environments. This paper presents a conceptual design scaffold for a semi-submersible hybrid wave-tidal platform. A broad literature review covers hybrid device concepts, modeling methods, materials, testing facilities, and research trends. Hybridization examples such as mechanical rectifier systems and combined-platform converters are discussed with diagrams. Composite materials (carbon/glass fiber-reinforced polymers) enable lightweight, stiff structures with high corrosion resistance. Corrosion protection using barrier coatings and cathodic systems is reviewed. A case study site (e.g. North Scotland) is characterized by example tide speeds (~1.0 m/s spring, ~0.5 m/s neap) and wave power (∼30 kW/m). Conceptual designs include component sizing tables and platform schematics (Figure 4.1) inspired by published designs. Modeling workflow (hydrodynamics → FSI → structure → fatigue → electrical) and test plan (scale model tests in a circular basin with controlled waves and currents) are outlined. FloWave tank (25 m diameter) is cited as a facility enabling combined wave-current testing. Example results from literature (TIWAG prototype and simulations) illustrate power output benefits. Economic analysis templates (CAPEX, OPEX, LCOE) are provided with literature cost estimates. This comprehensive design framework, fully referenced with figures and tables, supports future research on robust hybrid tidal-wave energy systems.
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