Energy extraction of wave energy converters embedded in a very large modularized floating platform

An embedded wave energy converter installed in a super-scale modularized floating platform is proposed for wave-induced kinetic energy extraction. The platform consists of multiple blocks where on-top huge modular decks are flexibly supported by floating semi-submergible modules via elastic cushions. For the connection between adjacent blocks, neighboring decks are joined by rigid hinges and neighboring floating modules are connected by two piston-type devices that are embedded wave energy converters (WEC), designed by the linear hydraulic power take-off (PTO) mechanism. Based on linear wave theory and rigid module flexible connector (RMFC), the dynamic model for the modularized floating platform is developed by using a network modeling method. In numerical case studies, the wave energy extraction of a five-block platform is investigated and the design region for the key parameters of the WEC is recommended. In addition the effects of the WECs on the dynamic responses and the connector loads of the modularized platform are studied. These results can improve the understanding on the performance of the specific platform. (C) 2018 Elsevier Ltd. All rights reserved.