基于双稳态磁耦合效应的瓦级高功率电磁振动能量收集器

doi:10.3901/JME.2022.20.092

机械工程学报 ›› 2022, Vol. 58 ›› Issue (20): 92-100.doi: 10.3901/JME.2022.20.092

• 特邀专栏：振动俘能器件与系统 • 上一篇下一篇

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基于双稳态磁耦合效应的瓦级高功率电磁振动能量收集器

黄曼娟^1,2, 冯孝为^1,2, 刘会聪^1,2, 孙立宁^1,2

1. 苏州大学机电工程学院苏州 215123;
2. 江苏省先进机器人技术重点实验室苏州 215123

收稿日期:2021-12-05 修回日期:2022-06-06 出版日期:2022-10-20 发布日期:2022-12-27
通讯作者: 刘会聪(通信作者)，女，1982年出生，博士，教授，博士研究生导师。主要研究方向为微能源与自供能系统、智能感知与人机交互等。E-mail：hcliu078@suda.edu.cn
作者简介:黄曼娟，女，1995年出生，博士研究生。主要研究方向为振动能量收集。E-mail：szdxhmj@126.com
基金资助:
国家重点研发计划资助项目(2019YFB2004800)。

Bistable Electromagnetic Vibration Energy Harvester Based on Magnetic Coupling Effect Realizing Watt-level Power Output

HUANG Manjuan^1,2, FENG Xiaowei^1,2, LIU Huicong^1,2, SUN Lining^1,2

1. School of Mechanical and Electric Engineering, Soochow University, Suzhou, 215123;
2. Jiangsu Provincial Key Laboratory of Advanced Robotics, Soochow University, Suzhou, 215123

Received:2021-12-05 Revised:2022-06-06 Online:2022-10-20 Published:2022-12-27

摘要/Abstract

摘要： 提出一种基于双稳态磁耦合效应的高密度电磁振动能量收集器，通过引入导磁铁心绕组对中间悬浮磁铁产生非线性磁力，可以产生双稳态势能阱实现低频段工作频带的拓宽。同时，导磁铁心与悬浮磁铁之间的强磁耦合作用能够增强线圈内部的磁通量变化进而提高输出功率。针对双稳态磁耦合振动能量收集器进行动力学建模仿真和试验测试分析，结果表明悬浮磁铁与导磁铁心之间的非线性磁耦合效应促使磁铁在两个势能阱之间进行大振幅的混沌或周期性振动，将工作频率范围拓宽至8～18 Hz。在受到加速度为4g的正弦振动直接激励时，能量收集器的输出功率为1.082 W，达到瓦级高功率输出，有望实现工业物联网传感节点的自供电，助力万物互联。

关键词: 振动能量收集, 电磁能量收集器, 双稳态, 宽频带, 高功率

Abstract: A high power output electromagnetic vibration energy harvester based on the bistable magnetic coupling effect is proposed. By introducing a permeable iron core to generate a nonlinear magnetic force on the suspended magnet in the middle, a bistable potential energy trap can be generated to achieve a widening of the operating bandwidth under low frequency vibration. At the same time, the strong magnetic coupling between the permeable core and the suspended magnet can enhance the magnetic flux variation inside the coil and thus increase the output power. The results show that the nonlinear magnetic coupling effect between the suspended magnet and the permeable core drives the magnet to vibrate chaotically or periodically with large amplitude between the two potential energy traps, widening the operating frequency band to 10 Hz. When directly excited by sinusoidal vibration with an acceleration of 4g, the output power of the energy harvester is as high as 1.082 W, reaching a watt-level high power output. This research will provide a technical support for the self-powered and wireless development of sensor network nodes in the industrial internet of things.

Key words: vibration energy harvesting, electromagnetic energy harvester, bistable, wide bandwidth, high power

中图分类号:

TM619

黄曼娟, 冯孝为, 刘会聪, 孙立宁. 基于双稳态磁耦合效应的瓦级高功率电磁振动能量收集器[J]. 机械工程学报, 2022, 58(20): 92-100.

HUANG Manjuan, FENG Xiaowei, LIU Huicong, SUN Lining. Bistable Electromagnetic Vibration Energy Harvester Based on Magnetic Coupling Effect Realizing Watt-level Power Output[J]. Journal of Mechanical Engineering, 2022, 58(20): 92-100.

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基于双稳态磁耦合效应的瓦级高功率电磁振动能量收集器

Bistable Electromagnetic Vibration Energy Harvester Based on Magnetic Coupling Effect Realizing Watt-level Power Output

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