电压反峰对脉冲电容器寿命特性的影响  

Effect of reverse voltage on lifetime performance of pulsed capacitors

作　　者：王博闻[1] 李化[1] 赖厚川 林福昌[1] 李智威[1] 刘德[1] 李浩原 张钦[1] 

机构地区：[1]强电磁工程与新技术国家重点实验室(华中科技大学),武汉430074 [2]西南技术物理研究所,成都610041

出　　处：《强激光与粒子束》2014年第4期135-138,共4页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(51377070)

摘　　要：以金属化聚丙烯膜电容器电压反峰为研究对象,探讨了脉冲电流对电容器寿命的影响机制,通过对电容器在不同电压反峰系数下进行寿命测试,研究了电压反峰系数与电容器寿命之间的关系.研究结果表明：当电压反峰系数在10％～65％时,电容器寿命成指数下降.基于试验结果,通过统计分析的方法,拟合出寿命随电压反峰系数变化的经验公式,可以用来预测不同反峰系数下金属化聚丙烯膜电容器的寿命特性.Metallized polypropylene film capacitors(MPPFCs)are key components in pulsed power systems.This paper mainly concentrates on the effect of the reverse voltage on the lifetime performance.Firstly the effect of discharge current on the lifetime performance of capacitors is introduced.Secondly experiment is designed to investigate the lifetime under different voltage reversal coefficients(β).The results indicate that the lifetime is extremely sensitive toβin the range of 9.4%to 65%,and the lifetime of MPPFCs decreases withβin index.Based on the experimental results,an empirically derived life-scaling equation is given by statistical analysis,which can predict the lifetime of MPPFCs under differentβ.

关 键 词：金属化聚丙烯膜电容器 电压反峰系数 电容器寿命 

分 类 号：TM533[电气工程—电器]