The problem of maximizing the performances of a U-OWC wave energy converter
in a variet of environmental conditions is investigated. Specifically, the paper compares two
control strategies coupling the U-OWC – PTO system. Two approaches are discussed. The first
relies on the tracking of the Maximum Power Points of the system, and empirical
relations between the optimal PTO performances and the energy content of the incident sea state are
estimated. Secondly, an analytical formulation linking the operational conditions of the turbine
to the instantaneous air pressure inside the pneumatic chamber is identified. Results
show that a sea state-based controller works better than a wave-to wave fast-acting
control
