不同激励方式下电力电容器振动特性研究  

Study on Vibration Characteristics of Power Capacitor Under Different Excitation Modes

作　　者：崔鑫[1] 李志远[1] 陆益民[1] 程金英[1] 

机构地区：[1]合肥工业大学噪声振动工程研究所,安徽合肥230009

出　　处：《电力电容器与无功补偿》2012年第5期53-58,83,共7页Power Capacitor & Reactive Power Compensation

基　　金：国家"十一五"科技支撑计划基金(No.2006BAA02A21)资助~~

摘　　要：采用试验模态分析方法研究了电力电容器的振动特性。在实验室搭建了1套电容器试验模态分析测试系统,分别采用3种不同激励方式对电容器进行测试。模态参数表明,正弦扫频和白噪声激励的测试结果比脉冲激励精确。一方面规范试验的激励方式,另一方面获得电容器的各主要模态参数,为电容器的低振动、低噪声设计提供依据。The vibration characteristics of power capacitor are studied by way of experimental modal analysis（EMA）.A set of EMA testing system is set up in the test laboratory to test the capacitor by adopting three different kinds of excitation modes respectively.It is shown by the modal parameters that the testing result excited by sine sweep and white noise is more accurate than that by impulse excitation.The excitation mode of the test is,on the one hand,normalized and,on the other hand,each main modal parameters of capacitor is obtained,which provides a reference for low vibration and noise design of capacitor.

关 键 词：试验模态分析(EMA) 激励方式 振动特性 模态参数 

分 类 号：TM531.4[电气工程—电器] TB535[理学—物理]