S-Shaped Buoys Boost Wave Energy Capture
Researchers developed a multi-DOF system that increases power absorption by utilizing heave, surge, and pitch motions.
Updated on Oct. 22, 2026 in Energy
Engineers have designed a new multi-degree-of-freedom wave energy converter using S-shaped buoy profiles. This configuration significantly outperforms traditional single-mode models in mean power absorption.
Why it matters
Optimizing energy capture across multiple wave motions allows for better efficiency in real-world oceanic conditions. This development marks a key improvement for generating power from nearshore wave environments.
The study utilized ANSYS AQWA for hydrodynamic calculations and Matlab/Simscape to evaluate power take-off dynamics. Results show mean absorbed-power enhancements ranging from 14.8% to 40.6% over single-DOF counterparts.
The details
The system mechanically synthesizes modal responses into a unified transmission path using natural multi-mode periods tuned to frequent peak-period intervals. Tests conducted for East China sea conditions show the design achieving a mean capture width ratio of 23.14%.
Timeline
October 22, 2026: The research results were published.
The Big Picture
This study marks a significant departure from the standard single-degree-of-freedom heave-only buoy design by integrating surge and pitch movements. It challenges traditional limitations in wave energy conversion by demonstrating that multi-mode tuning increases total power extraction.
Refining wave energy harvesting technology could eventually lead to more cost-effective and reliable renewable energy sources for coastal regions. These efficiency gains are vital for scaling wave power as a viable alternative to existing energy generation methods.
The takeaway
Advancing buoy geometry helps engineers capture more energy from the complex movements of the ocean. This suggests that future wave power systems will rely on sophisticated, multi-axis designs rather than simple vertical motion.
Further reading
Learn more about the latest innovations in Energy research.
Source note: This article includes information reported by Nature.
