Ocean wave energy extraction device with two or more floats

Abstract

An ocean wave energy extraction device with two or more floats for extracting energy from the sea waves, is disclosed. It comprises at least two floats (3), a float spacing changing mechanism which enables the spacing between the at least two floats (3) to be variable and actively controlled during the operation, and a power take-off system (4) which extracts wave energy. The variable spacing between the at least two floats (3) during the operation enables high wave energy extraction efficiency in a broader range of sea wavelengths, which also improves scalability. Furthermore, the at least two floats (3) may comprise a number of repurposed shipping containers (3) which enable cost reduction, modularity, circularity in case the repurposed shipping containers (3) are decommissioned, scalability, and repairability.