Research on vibration energy harvesting technology of power equipment based on alternating magnet array
作者机构：State Key Laboratory of Electrical Insulation and Power EquipmentXi'an Jiaotong UniversityXi'anChina State Grid Sichuan Electric Power Research InstituteChengduChina
出 版 物：《High Voltage》 (高电压（英文）)
年 卷 期：2024年第9卷第2期
页 面：336-345页
核心收录：
学科分类：0808[工学-电气工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）]
基 金：Science and Technology Project of SGCC Grant/Award Number:5209402006Z。
主 题：power energy alternating
摘 要：Vibration with a frequency of 100 Hz is widely distributed in the power equipment,and it can provide a new way to supply energy for sensors by vibration energy harvesting.The vibration energy harvesting method based on electromagnetic induction principle was studied through the arrayed structure of magnets and coils.Static magnetic field models were established for four magnet array structures and it was found that the alternating magnet array has the largest magnetic flux and magnetic flux gradient.Based on the alternating magnet array,prototypes of energy harvester with vertical and parallel movement mode were proposed.Through structural parameter optimisation analysis,two different energy harvesters were fabricated and it was found that the energy harvester with a parallel movement mode has better output performances.The energy harvester could provide output voltage/current and power of 8.35 V/17.39 mA and 15.13 mW(matched resistance is 200Ω)at an acceleration of 5 m⋅s^(-2).The 100 mF capacitor could be charged to 2.72 V within 300 s,and the final voltage of the capacitor is greater than 3 V,which could sustainably drive commercial wireless temperature/humidity sensors.
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