Floating Wave Energy Converter

This Demonstration simulates a floating wave energy converter, which consists of a buoy containing a winch anchored to the bottom of the seabed by a cable.
The linear up and down motion of the buoy is converted into the rotational motion of the winch. The winch is spring-loaded and is connected to separate generators for each direction of its rotation, thus converting mechanical energy into electricity.


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The equation of motion expresses the equilibrium of forces acting on the buoy: the downward force of gravity, the upward buoyancy, the upward drag force, and the up or down reactive torque of the winch that drives the generators.
For the wave motion, a periodic trochoidal wave model is used [1].
For a concrete example of a wave energy conversion project by similar buoys, see [2].
[1] R. Nave. "Ocean Waves." HyperPhysics. (May 7, 2013) hyperphysics.phy-astr.gsu.edu/hbase/waves/watwav2.html.
[2] VLIZ - Flanders Marine Institute. "FlanSea Wave Pioneer Wave Energy Converter." Press release. (Apr 23, 2013) hugin.info/134311/R/1695437/557886.pdf.
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