INSTITUTO DE INVESTIGACIONES EN ELECTRONICA, CONTROL Y PROCESAMIENTO DE SEÑALES
Unidad Ejecutora - UE
Optimal wave energy extraction for oscillating water columns using second-order sliding mode control
EVANGELISTA, C.A.; MOSQUERA, F.D.; RINGWOOD, J.V.; PULESTON, P.F.
IET RENEWABLE POWER GENERATION
INST ENGINEERING TECHNOLOGY-IET
Año: 2020 vol. 14 p. 1512 - 1519
Ocean waves are an important renewable energy resource and several fields of R&Dare concurrently working toimprove technologies for harnessing their power. In that context, this study presents a control to optimise the performance ofoscillating water column systems. As a first contribution, a novel criterion to attain maximum wave energy extraction isdeveloped, resulting in an enhancement of the global power efficiency of the system. Then, taking advantage of the proposedcriterion, a second-order sliding mode control set-up is designed, with power extraction maximisation the primary objective andreactive power regulation a secondary one. Simulation results confirm the highly satisfactory performance of the proposedcontroller and its robustness in the presence of the inherent uncertainties and disturbances in the non-linear system.