高压电器2023，Vol.59Issue(12)：145-151,7.DOI:10.13296/j.1001-1609.hva.2023.12.017
基于电磁感应和压电效应复合的变压器振动能量收集研究
Research on Hybrid Vibration Energy Collection Based on Electromagnetic Induction and Piezoelectric Effect for Transformer
摘要
Abstract
How to supply energy to massive sensors is an urgent problem to be solved in the construction of power In-ternet of things.Energy harvest technology provides a feasible solution to this problem.Transformer generates signifi-cant vibration energy with a main frequency at 100 Hz under action of the power frequency magnetic field.However,an effective harvest mode has been lacking.In this paper,a vibration energy harvester with electromagnetic induction and piezoelectric effect is designed and made by using the resonant structure of cantilever beam.The frequency re-sponse characteristics of the energy collector are tested.The resonant frequency of the element is 100 Hz,and the 3 dB bandwidths of the piezoelectric part and the electromagnetic part are 4.1 Hz and 2.0 Hz,respectively.Under the vibration condition of 100 Hz/5 m·s-2,the open-circuit voltages of the piezoelectric part and the electromagnetic part are 44.98 V and 6.85 V respectively.Under the same conditions,the maximum output power is 28.17 mW and har-vester can charge a 100 mF capacitor to 3.81 V in 300 s.Under the conditions of laboratory simulation and transform-er field test,the application prospect of the energy harvester is tested.The energy harvester can harvest the vibration energy of the transformer shell,charge the capacitor and drive the sensor.关键词
振动能量收集/压电效应/电磁感应/变压器/100HzKey words
vibration energy collection/piezoelectric effect/electromagnetic induction/transformer/100 Hz引用本文复制引用
吕品雷,王子乔,杨爱军,袁欢,褚继峰,王小华,荣命哲..基于电磁感应和压电效应复合的变压器振动能量收集研究[J].高压电器,2023,59(12):145-151,7.基金项目
国家电网有限公司科技项目(面向能源互联网自供电传感关键技术研究).Project Supported by Science and Technology Project of the State Grid Corporation of China(Research on Key Technologies of Self-powered Sensing for Energy Internet). （面向能源互联网自供电传感关键技术研究）
