摘要
海浪能作为一种丰富可再生能源,其产生不受季节、时间和气候条件影响,具有比较稳定的能量输出和很高的利用潜力。为了能够捕获和利用海浪中更多低频能量,提高发电效率,通过对现有发电装置的特点、海浪的能量特征及压电效应原理进行分析研究,提出了一种小型浮子结构发电装置,其是利用磁铁之间磁力引起悬臂梁的振动,采用弹簧与压电振子进行增频,对波浪能进行能量收集并转换的装置设计。通过仿真计算得出结构参数对电压和发电能力的影响曲线,并采用Comsol对装置悬臂梁长度、固有频率与输出电压之间的关系进行模拟分析,得出系统一阶固有频率和输出电压随悬臂梁长度和外力变化的规律。根据海浪特性及模拟结果优化设计系统参数,提高小型便携装置的发电能力,以满足远海和孤岛等偏远区域能源供给问题,同时,该小型磁力悬臂振动压电发电装置结构简单、体积小、易于携带和使用。
As a rich and renewable energy source,wave energy is not affected by seasons,time or climatic conditions,and has relatively stable energy output and high utilization potential.To capture and utilize more low-frequency energy in waves and improve power generation efficiency,a small float structure power generation device was proposed through the analysis and research of the characteristics of existing power generation devices,the energy characteristics of waves and the principle of piezoelectric effect.This device utilized the vibration of the cantilever beam caused by the magnetic force between magnets,and used springs and piezoelectric oscillators to increase the frequency,collecting and converting wave energy.Through simulation calculations,the influence curves of structural parameters on voltage and power generation capacity were obtained,and the relationship between the length of the cantilever beam,the natural frequency and the output voltage of the device was simulated and analyzed by Comsol,and the laws of the first-order natural frequency and output voltage of the system with the change of the length of the cantilever beam and external force were obtained.According to the characteristics of waves and simulation results,the system parameters are optimized to improve the power generation capacity of the small portable device,to meet the energy supply problems in remote areas such as the far sea and isolated islands.At the same time,this small magnetic cantilever vibration piezoelectric power generation device has a simple structure,small volume,and is easy to carry and use.
作者
贾小溪
孔繁星
JIA Xiaoxi;KONG Fanxing(School of Information and Control Engineering,Jilin University of Chemical Technology,Jilin City 132022,China;School of Mechanical and Electrical Engineering,Jilin University of Chemical Technology,Jilin City 132022,China)
出处
《吉林化工学院学报》
2025年第7期29-35,共7页
Journal of Jilin Institute of Chemical Technology
基金
吉林化工大学博士启动基金项目(吉化院博基合字[2021]31号)。
关键词
波浪能
压电效应
悬臂梁
发电装置
wave energy
piezoelectric effect
cantilever beam
power generation device
