基于介电弹性体的漂浮式振荡水柱发电分析

为解决海洋监测微型传感器供能问题,设计新型波浪能捕获装置,在海面振荡浮筒气室产生空气气柱,驱动介电弹性体形变发电为传感器供能。建立振荡浮子式气柱数值模型,研究新型振荡水柱发电计算理论。利用水动力仿真软件AQWA求解浮子所受波浪力作用振荡幅值、辐射阻尼和附加质量。基于Simulink软件分别计算波浪作用下浮子位移和气室内水柱位移,根据两者的位移差计算气室体积变化所产生的空气压强、介电弹性体发电薄膜形变量和系统输出电能,单次循环周期最大发电量达到24.6 mJ。分析波浪周期、发电薄膜几何参数等对输出电能的影响。

Calculation Theory of Floating Oscillating Water Column Electricity Generation Based on Dielectric Elastomer

A new wave energy harvesting device was designed to supply energy for the micro sensors of the marine monitoring.The air column producing in the central air chamber of sea float drives dielectric elastomer deform to generate electrical energy as a self-power system.The numerical model of oscillating buoy gas column was established to research on the calculation theory of oscillating water column power generation.The displacement differences are reduced based on Simulink software that depends on the buoy and the water column relative movement driven by wave energy.It is a necessary parameter to analyze the chamber pressure and the deformation of dielectric elastomer and the electromechanical coupled changes.The results show that the generator can produce more than 24.6 mJ electrical energy.The effects of wave period and geometric parameters of power generation film are analyzed about the output power.