一种磁耦合激励的涡轮式压电气流俘能器  

Magnetic coupling gas piezoelectric energy harvester based on turbine structure

作　　者：阚君武[1,2] 杨泽盟 王淑云 黄鑫[1] 张忠华 廖泳 文一杰[1] KAN Jun-wu;YANG Ze‑meng;WANG Shu-yun;HUANG Xin;ZHANG Zhong-hua;LIAO Yong;WEN Yi-jie(Institute of Precision Machinery and Intelligent Structure,Zhejiang Normal University,Jinhua 321004,China;Key Laboratory of Urban Rail Transit Intelligent Operation and Maintenance Technology and Equipment of Zhejiang Province,Jinhua 321004,China)

机构地区：[1]浙江师范大学精密机械与智能结构研究所,浙江金华321004 [2]浙江省城市轨道交通智能运维技术与装备重点实验室,浙江金华321004

出　　处：《振动工程学报》2022年第5期1174-1180,共7页Journal of Vibration Engineering

基　　金：国家自然科学基金资助项目(51877199,52077201);浙江省自然科学基金资助项目(LY20F010006);浙江省重点研发计划资助项目(2021C01181);国家级大学生创新创业训练计划资助项目(201910345047,202010345068,202010345044)。

摘　　要：为满足气流管道监测系统的自供电需求,提出一种磁耦合激励的涡轮式压电气流俘能器。建立了俘能器的理论模型并进行了仿真分析,设计制作了样机并进行了试验测试,获得了磁铁排布、附加质量、压电振子串并联及负载电阻对其输出特性的影响规律。结果表明:在其他条件确定时,存在多个较佳气压使输出电压出现峰值,主频峰值的大小和分频的位置均与激励磁铁排布有关;通过附加质量可以调节最佳气压和输出电压峰值,采用多个不同附加质量的压电振子串联或并联可以拓宽俘能器的气压适应范围;存在不同的最佳负载使多个压电振子串联和并联时俘能器的输出功率达到最大,最佳负载及其所对应的最大输出功率分别为(40 kΩ,41 mW),(15 kΩ,50 mW)。To satisfy the demands of self-powered monitoring system for gas pipe,a magnetic coupling gas piezoelectric turbine en‐ergy harvester based on turbine structure is presented.The theoretical model of the energy harvester is established,simulated and analyzed.The prototype is designed and fabricated for test,obtaining the influence of magnets arrangements,proof masses,con‐nections and resistance on the output capability.The results show that multiple appropriate pressures lead to the peak voltage,and the peak value of the main frequency and the position of the frequency division are related to the magnets arrangements.The best pressure and peak output voltage value can be adjusted by proof masses,and the best range of input air pressure can be widened by series or parallel connected PZT oscillators with different proof masses.Besides,there are different optimal loads(40 kΩ,15 kΩ)to maximize the output power(41 mW,50 mW)for series or parallel connected piezoelectric oscillator.

关 键 词：压电俘能器 气流俘能 涡轮 旋磁 间接激励 

分 类 号：TM619[电气工程—电力系统及自动化]