基于导磁材料的电磁式振动能量采集器设计与仿真研究  

Design and Simulation of Electromagnetic Vibration Energy Harvester Based on Magnetic Conductive Material

作　　者：舒鑫华 杨俭[1] 袁天辰[1] 宋瑞刚[1] 苗晓丹 方宇 SHU Xinhua;YANG Jian;YUAN Tianchen;SONG Ruigang;MIAO Xiaodan;FANG Yu(School of Urban Rail Transit,Shanghai University of Engineering Science,Shanghai 201620;School of Mechanical and Automotive Engineering,Shanghai University of Engineering Science,Shanghai 201620)

机构地区：[1]上海工程技术大学城市轨道交通学院,上海201620 [2]上海工程技术大学机械与汽车工程学院,上海201620

出　　处：《计算机与数字工程》2025年第1期290-295,共6页Computer & Digital Engineering

摘　　要：针对现有的电磁式振动能量采集器中存在的磁路气隙大和漏磁问题,论文设计并提出了一种基于导磁材料的单自由度振动能量采集器。采集器系统设置有磁轭和衔铁,能够通过闭合磁路和降低磁阻来提高系统的磁感应强度,减少漏磁现象并增强系统的能量转换效率,使振动能量采集器输出更高的感应电压,并将环境中的振动能量转换成电能。论文通过有限元仿真对系统模型进行分析,仿真结果表明,衔铁和磁轭对磁感应强度有明显的增强效果,设置有磁轭和衔铁的采集器有限元模型的磁感应强度在最值处高是未设置的有限元模型出2.53倍,开路电压高出354.8%。通过对振动能量采集器的相关参数进行优化得到:当线圈匝数为1 300匝,线圈长度为134.67 m,磁轭上、下部分厚度为21 mm,中间部分厚度为5.5 mm时,系统输出功率最大,最大输出功率为0.403 W。In order to solve the problems of large air gap and magnetic leakage in magnetic circuit of electromagnetic vibration energy harvester,a kind of vibration energy harvester with single degree of freedom based on magnetic conductive material is de⁃signed and presented in this paper.The harvester system is equipped with a magnetic yoke and an armature,which can increase the system's magnetic induction by closing the magnetic circuit and reducing the magnetoresistance,reducing magnetic leakage and en⁃hancing the system's energy efficiency,the vibration energy harvester outputs a higher induced voltage and converts the vibration en⁃ergy in the environment into electrical energy.In this paper,the system model is analyzed through the finite element simulation.The simulation results show that the armature and the magnetic yoke have obvious enhancement effect on the magnetic induction,the magnetic induction of the finite element model with yoke and armature is 2.53 times higher than that of the finite element model with⁃out yoke and armature,and the open-circuit voltage is 354.8%higher than the magnetic induction value of the finite element model without armature and yoke.By optimizing the parameters of the vibration energy harvester,it is found that the output power of the system reaches its maximum when the number of turns is 1300,the length of the coil is 134.67 m,the thickness of the upper and lower parts of the magnetic yoke is 21 mm,and the thickness of the middle part is 5.5 mm,the maximum output power is 0.403 W.

关 键 词：电磁式振动 能量采集器 有限元模型 磁场 

分 类 号：O441.4[理学—电磁学]