Research on hydrodynamic performance of modular offshore wave energy platform

This paper presents a new type of modular wave energy generation platform model which is based on wave energy conversion system and offshore platform. In this paper, a hydrodynamic analysis commercial software was used to analyze motion responses to different wave conditions at the joints of each two unit modules of this platform in irregular waves. This wave energy generation device mainly has two kinds of working states: generating state and platform-working state, though this article only considered the former state. Results of simulation analysis were used to establish a quantitative model between the relative angular velocity and power generation efficiency of unit. The results demonstrate that the amplitude of angular velocity becomes larger while the wavelength and wave height increases. It is also demonstrated that there will be a resonance phenomenon when the wavelength is close to the feature size of the floating body. Furthermore, the power generation efficiency presents the characteristics of periodicity and attenuation gradually over time.