It is not unusual to have as many as a thousand people. The HG steepness angle α with respect to the wave is varied and initially optimized for improved energy capture. Better roads and more leisure time have brought increasing numbers of diggers to the ocean beaches.

By exploiting the nonlinear physics in the HG design simplified operational performance is observed when compared to an optimized linear cylindrical WEC. Numerical simulations demonstrate power and energy capture for the HG geometric buoy design which incorporates and capitalizes on the nonlinear geometry to provide reactive power for the single DOF WEC. A Bretschneider spectrum of wave excitation input conditions are reviewed and evaluated for the HG buoy. Under her leadership, they have averaged 94 diversion and been awarded the EPAs Business Partner of the Year in 2019. OCEANS DAY OP-ED IN THE SEATTLE TIMES BY OUR TRUSTEE T.J. For a single frequency the PDC3 RCC buoy is compared with the HG buoy design. World Oceans Day Come and celebrate the beauty of our oceans. A Complex Conjugate Control (C3) with a practical Proportional-Derivative (PD) controller is employed to optimize power absorption for off-resonance conditions and applied to a linear right circular cylinder (RCC) WEC. The unique formulation of the interaction between the buoy and the waves produces a nonlinear stiffening effect that provides the actual energy storage or reactive power during operation. The HG buoy operates in heave motion or as a single Degree-of-Freedom (DOF). A nonlinear dynamic model is presented for an hour glass (HG) configured WEC.

This paper presents a nonlinear geometric buoy design for Wave Energy Converters (WECs).

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