Gilloteaux, Jean-Christophe and Ringwood, John
Control-informed geometric optimisation of
wave energy converters.
In: IFAC Conference on Control Applications in Marine Systems (CAMS), September 2010, Rostock.
This paper concerns the interplay between the physical geometry of a wave energy
converter (WEC) and the control strategy adopted for the converter, with the ultimate aim of
optimising the energy output of the device. An energy-based performance function is employed
and we attempt to perform numerical optimisation of a heaving buoy employing a latching
control strategy. We allow both draught and radius of the axisymmetric buoy to be adjusted
using a numerical optimisation. A linear time-domain hydrodynamic program is used in order
to simulate the device motion, while the optimization problem is solved by means of a simplex
method. Results show the difference in the frequency response of an optimal buoy for a particular
sea-state designed with and without knowledge of the control system.
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