Key Features
Wave energy is a highly reliable renewable resource with an energy density of 2–3 kW/m², significantly higher than wind (0.4 to 0.6 kW/m²) and solar (0.1–0.2 kW/m²). The global wave energy potential is estimated at 2.11 ± 0.05 TW, nearly matching the 2020 global electricity demand of 2.6 TW.
Currently, only 0.5–0.6% of this resource is exploited, while the theoretical potential exceeds 32,000 TWh annually-surpassing global electricity consumption. This innovation combines advanced buoy geometry, a self-stabilizing power take-off (PTO) system, and validated experimental modeling to deliver a highly efficient offshore wave energy solution.
The axi-symmetric spinning top"buoy is hydrodynamically tuned for resonance in incidence wave, achieving up to 33.9% greater power output than conventional cylindrical designs. Its symmetrical double-rack PTO with geared one-way bearings converts bidirectional heave motion into continuous unidirectional rotation, ensuring balanced operation, reduced mechanical losses, and high reliability in at higher wave amplitudes.
Performance has been confirmed through integrated ANSYS AQWA and MATLAB/Simscape simulations, supported by 1:25 scale wave tank testing and mechanical rig trials, demonstrating PTO efficiencies exceeding 75% RMS. The modular system can power oceanographic sensors, offshore aquaculture, coastal tourism facilities, floating hotels, marine research stations, offshore hydrogen production, desalination plants, navigation aids, and emergency relief operations, aligning with blue-economy priorities and the Sustainable Development Goals 7 (Clean Energy) and 14 (Life Below Water)
Self‑Stabilizing PTO System/ Design, Testing, Validatio
●Time-series results show that the AS buoy consistently delivers higher absorbed power than the Cyl buoy, with clearer peak responses during incident wave cycles.
● Power absorption and capture width increase with rising significant wave height for both buoy types, with the AS buoy consistently maintaining higher values.
● In frequency response, the AS buoy shows stronger and more stable absorption across 0.02–0.06 Hz, aligning with the dominant range of irregular sea states, while the Cyl buoy demonstrates narrower and less efficient performance
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