磁性液体摩擦-电磁复合能量收集器的力电耦合机制研究  

Study on Mechanical-electrical Coupling Mechanism of Magnetic Liquid Triboelectric-electromagnetic Composite Energy Harvester

作　　者：杨晓锐 郑昊 龙辉 安国庆 杨文荣[2] YANG Xiaorui;ZHENG Hao;LONG Hui;AN Guoqing;YANG Wenrong(College of Electrical Engineering,Hebei University of Science and Technology,Shijiazhuang 050018,Hebei Province,China;State Key Laboratory of Reliability and Intelligence of Electrical Equipment(Hebei University of Technology),Beichen District,Tianjin 300000,China)

机构地区：[1]河北科技大学电气工程学院,河北省石家庄市050018 [2]省部共建电工装备可靠性与智能化国家重点实验室(河北工业大学),天津市北辰区300000

出　　处：《中国电机工程学报》2024年第11期4406-4416,I0019,共12页Proceedings of the CSEE

基　　金：国家自然科学基金项目(51877066);河北省自然科学基金项目(E2020208039)。

摘　　要：基于摩擦发电和电磁感应发电原理,利用磁性液体同时作为摩擦层和磁体,文中提出一种将低频振动能转化为电能输出的磁性液体摩擦-电磁复合发电机。理论分析磁场作用下复合振动能量收集系统不同工作模块的动力学特性和力电耦合机制,借助有限元仿真软件建立复合能量收集系统磁场、电场、流体场和输出电动势的多场耦合仿真模型,设计低频正弦激励下复合能量收集系统输出电能实验测试平台,探究外部激振频率和外磁场强度等因素对电能输出特性的影响。实验结果表明,所提磁性液体摩擦-电磁复合能量收集器可以在低频环境中将振动能量有效转换为电能。Based on the principle of triboelectric nanogenerator and electromagnetic induction power generation,using magnetic liquid as friction layer and magnet at the same time,a magnetic liquid triboelectric-electromagnetic composite energy harvester is proposed in this paper,which can convert low-frequency vibration energy into electric energy and output it.The dynamic characteristics and electromechanical coupling mechanism of different working modules of the compound vibration energy collection system under the action of magnetic field are theoretically analyzed.With the help of finite element simulation software,the multi-field coupling simulation model of magnetic field,electric field,fluid field,and output electromotive force of the compound energy collection system is established.The experimental test platform of compound energy collection system under low-frequency sinusoidal excitation is designed,and the influence of external excitation and external magnetic field intensity on the output characteristics of electric energy is explored.The experimental results show that the designed magnetic liquid triboelectric-electromagnetic composite energy harvester can effectively convert vibration energy into electric energy in low frequency environment.

关 键 词：磁性液体 复合能量收集器 摩擦纳米发电机 电磁感应 能量转换 

分 类 号：TM271[一般工业技术—材料科学与工程]