钝体摆动间接激励式压电风力发电机的研究  

Indirect excitation piezoelectric wind power generator based on the oscillation of the cylindrical bluff body

作　　者：阚君武[1,3] 廖卫林 林仕杰 张忠华[1,3] 黄鑫[1] 文一杰 王淑云 KAN Jun-wu;LIAO Wei-lin;LIN Shi-jie;ZHANG Zhong-hua;HUANG Xin;WEN Yi-jie;WANG Shu-yun(Institute of Precision Machinery and Intelligent Structure,Zhejiang Normal University,Jinhua 321004,China;School of Aerospace Engineering,Xiamen University,Xiamen 361005,China;Key Laboratory of Urban Rail Transit Intelligent Opera-tion 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]厦门大学航空航天学院,福建厦门361005 [3]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》2021年第3期577-583,共7页Journal of Vibration Engineering

基　　金：国家自然科学基金资助项目(51877199,52077201);浙江省重点研发项目(2021C01181);浙江省自然科学基金资助项目(LY20F010006);国家级大学生创新创业训练计划项目(201910345047);浙江省新苗人才计划项目(2019R404056)。

摘　　要：为满足风场环境中传感监测系统的自供电需求,提出一种钝体摆动间接激励式压电风力发电机,利用圆柱形钝体涡激振动产生的往复摇摆带动磁铁间接激励密封腔内压电换能器振动发电。介绍了发电机结构及工作原理,并进行了理论和试验研究,证明了其结构和原理的可行性。研究结果表明:其他条件确定时,输出电压随柔性梁长度和换能器质量增加以及耦合器的质量降低而增加,锁频带宽随柔性梁长度增加以及耦合器和换能器的质量降低而增加;此外,存在最佳负载电阻使输出功率达到最大。To meet the self-powered requirements of the sensing monitoring system in the wind environment,an indirect excitation piezoelectric wind power generator(PWPG)based on the oscillation of the cylindrical bluff body is proposed.The vortex-induced vibration of bluff body is used to indirectly excite the piezoelectric transducer in the sealed cavity by the magnets to vibrate and generate electric energy.The system structure and working principle are introduced,and theoretical and experimental studies are carried out to prove the feasibility of principle.The research results show that the output voltage and lock-in bandwidth of frequency for PWPG can be adjusted by changing the flexible beam length,coupler mass and transducer mass.Moreover,there is an optimal external load resistance to maximizing the output power of PWPG.

关 键 词：压电 风力发电机 涡激振动 间接激励 风场环境 

分 类 号：TN384[电子电信—物理电子学] TK83[动力工程及工程热物理—流体机械及工程]