Energy Generation Efficiency due to Wave Overtopping on Floating-Overflow-Type Wave Energy Converter

Research on Wave Energy Converters

“…Overall, OBWEC performs better. Power and conversion efficiency of the WECs in the references: (a) P of WECs [40,45,75,89,97,103,104,107,109], (b) conversion efficiency of WECs under physical test [11,41,[54][55][56][57][58][59]79,[81][82][83]96,98,108], and (c) conversion efficiency of WECs under numerical simulation [1,6,62,[68][69][70]75,79,[84][85][86][87][88][89][90][91][92]101,105,110]. Note: Except for the maximum values in references [45,76,89], the other values are the average power generation (the approximate words such as 'stable' and 'maintenance' in the reference are regarded as average).…”

“…Interlayer water turbulence was not conducive to the converter's capturing energy. Dong Soo et al [45] studied the overtopping structure (FOWEC) of wave-proof and wave energy converters through physical experiments. FOWEC was divided into two parts.…”

“…It was found that the position on the slope with the same height as the water depth was the first impacted by the wave, and it spread up and down when H increased. Based on the data, the slope force exceeded 120 N. Liu et al [48] used numerical simulation to analyze the structure of the disc-shaped OWEC and concluded that the overtopping performance could be promoted by having more guide vanes (12 guide vanes), a slope ratio of 1:2, a dry-docking height of 0.1 m, and a return plate length of 0.15 m. The slope-type OWEC with double reservoirs [43,44], the floating OWEC [45], the sliding-baffle OWEC [47] and saucer-like WEC [48] are shown in Figure 6.…”

“…Energies 2024, 17, x FOR PEER REVIEW 6 of 24 force exceeded 120 N. Liu et al [48] used numerical simulation to analyze the structure of the disc-shaped OWEC and concluded that the overtopping performance could be promoted by having more guide vanes (12 guide vanes), a slope ratio of 1:2, a dry-docking height of 0.1 m, and a return plate length of 0.15 m. The slope-type OWEC with double reservoirs [43,44], the floating OWEC [45], the sliding-baffle OWEC [47] and saucer-like WEC [48] are shown in Figure 6. Fixed OWECs are constructed in coastal or near-shore areas, which are easy to build and maintain.…”