Academic Journal of Engineering and Technology Science, 2023, 6(1); doi: 10.25236/AJETS.2023.060108.

## Optimal design of wave energy maximum output power based on equation model

Author(s)

Zhangjie Wu1, Liangkun Fang2

Corresponding Author:
Zhangjie Wu
Affiliation(s)

1School of Information Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, Zhejiang, 310018, China

2School of Science, Zhejiang Sci-Tech University, Hangzhou, Zhejiang, 310018, China

### Abstract

Wave energy is an important marine renewable energy at present. How to improve the energy conversion efficiency of wave energy conversion devices is one of the key issues to achieve the comprehensive utilization of wave energy. In this paper, the differential equation model is established by analyzing the motion model of the wave energy device during heave and pitch, and the optimization model is established to maximize the average output power of the wave energy device. In this paper, according to the fact that the wave energy device is subjected to gravity and buoyancy in still water and the two forces are balanced, combined with the given parameters of the float and vibrator, it is found that the height of the cylinder part of the float submerged in water is 2m. The float only makes heave motion in the wave. The force of the float and the vibrator is analyzed respectively and the differential equation model is established to solve them. The variation trend of the heave displacement and velocity of the float and the vibrator with time is obtained under the given two conditions. It is found that the initial movement of the whole device under wave excitation is relatively violent, then tends to be stable and presents a periodicity, and fluctuates within 0.8m of the offset balance position.

### Keywords

Differential equation model; Moment of inertia; Optimization model

### Cite This Paper

Zhangjie Wu, Liangkun Fang. Optimal design of wave energy maximum output power based on equation model. Academic Journal of Engineering and Technology Science (2023) Vol. 6, Issue 1: 50-54. https://doi.org/10.25236/AJETS.2023.060108.