ESR 1: Trinity College Dublin
Secondments: SWIRL GENERATORS LTD
Amongst the more widely researched solutions on WECs, oscillating water column (OWC) has attracted considerable attention as these make one of the most effective means of absorbing wave energy. Recently, a new model of a wave energy device has been proposed that is a single body, consisting of a surface float rigidly linked to a substantial mass of trapped sea water. This is an arrangement that looks similar to an OWC, but in operation is quite different, – here the heaving buoy responds to the wave excitation, not the water column.
To maximise the power captured by the PTO, innovative control algorithms are to be formulated and investigated in this project. Two different types of control algorithms are proposed to be formulated. A semi-active (dependent on time-scale) will be developed for a week-by-week or day-by-day changing of reference mass to re-set for significant change in weather conditions. This will lead to a re-tuning of the device and can be used e.g. for a storm situation control. In addition, a new multi-objective H∞ robust control with a pneumatic air pressure controller will be formulated to optimise the power production from PTO.