光学精密工程2024，Vol.32Issue(24)：3594-3602,9.DOI:10.37188/OPE.20243224.3594
间接激励磁耦合式压电旋转发电机
Piezoelectric rotational energy harvester with indirect magnetic excitation
摘要
Abstract
In order to meet the demand of self-power supply of remote monitoring systems under special environment,a piezoelectric rotational energy harvester with indirect magnetic excitation was proposed.The dynamic response of the system was improved by changing the height of the damping cavity,and the volume energy density of the system was increased by coupling the piezoelectric vibrators.Through model-ing and simulation analysis of harvester,the effects of exciting magnet number ratio,excited magnet dis-tance,system equivalent stiffness and other parameters on the amplitude-magnification ratio of the system are obtained.On this basis,a prototype is designed and made,and the effects of exciting magnet number ratio,excited magnet distance,the cavity height and load resistance on the output voltage characteristics of the harvester are obtained.The results show that the number ratio of exciting magnets and the distance be-tween exciting and excited magnets have a great influence on the maximum output voltage of the harvest-er,and the bandwidth of the harvester can be significantly adjusted by the cavity height,so the output volt-age and effective bandwidth of harvester can be adjusted through the design of structural parameters.When other conditions are given,there is an optimal load resistance(16 kΩ)to maximize the output power(12 mW).关键词
旋转/间接激励/发电机/能量收集/压电Key words
rotational/indirect excitation/harvester/energy harvesting/piezoelectricity分类
信息技术与安全科学引用本文复制引用
王淑云,刘盼盼,任泽峰,周积俊,阚君武,张忠华..间接激励磁耦合式压电旋转发电机[J].光学精密工程,2024,32(24):3594-3602,9.基金项目
国家自然科学基金资助项目(No.51877109,No.52077201) （No.51877109,No.52077201）
浙江省重点研发计划资助项目(No.2021C01181) （No.2021C01181）
浙江省自然科学基金资助项目(No.LY20F010006) （No.LY20F010006）
