Li, C.F., Fu, P., Ren, H.L., Xu, W.J. and Guedes Soares, C. (2017), “Ultimate bearing capacity assessment of hull girder with Asymmetric cross-section”, Proceedings of the ASME 2016 36th International Conference on Ocean, Offshore and Arctic Engineering (OMAE17), 25-30 June, Trondheim, Norway

The objective of this paper is to present a Power Take-Off concept to increase the wave power harvested by a point floater Wave Energy Converter. This is achieved by increasing the maximum admissible force supported by oil-hydraulic cylinders by arranging them in a reciprocating way. This paper presents the simulation results achieved with this cylinder arrangement and for a set of eleven standard cylinders with different piston sizes and admissible forces and compares them to the state-of-the-art cylinder design. According to the numerical results the gain on produced power with this approach depends on the cylinder piston size and wave condition state and it can be 1.2 to 2.2 times the power produced by the state-of-the-art design. This study also indicates that better power gains might be achieved by optimizing the reciprocating cylinder geometric layout and performing an adequate sizing of all hydraulic components in order to adapt the Power Take-Off design to these new and higher levels of harvested power.

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