金属化膜电容器研究进展  

Research Progress on Metallized Film Capacitors

作　　者：李化[1] 李智威[1] 黄想 李浩原 王文娟[1] 王博闻[1] 

机构地区：[1]华中科技大学强电磁工程与新技术国家重点实验室,湖北武汉430074

出　　处：《电力电容器与无功补偿》2015年第2期1-4,18,共5页Power Capacitor & Reactive Power Compensation

基　　金：国家自然科学基金(51377070)

摘　　要：金属化膜电容器是脉冲功率系统广泛使用的储能器件,具有储能密度高和可靠性好等特点。文中介绍高储能密度金属化膜电容器关键技术的研究进展。结合金属化膜自愈特性的研究,提出自愈性能优化方法;研究电容器的泄漏特性,提出导致高储能密度电容器电压下降的原因有薄膜体积泄漏和松弛极化效应,研究表明松弛极化效应是主要因素;分析影响电容器通流能力的主要限制性因素;研制出的高储能密度电容器储能密度达到2.7 MJ/m3,寿命大于850次。Metalized film capacitor with high energy density and good reliability is a kind of energy storage device used widely in pulsed power systems. In this paper, the research progress on metalized film capacitor with high energy storage is introduced. The optimization scheme of self-healing performance of the metalized film is proposed with combination of its self-healing characteristic; the dielectric leakage of the capacitor is studied and it is pointed out that the reason causing voltage drop of the capacitor with high energy storage density is due to film volume leakage and relaxation polarization effects which is the main factor.The main limit factor affecting current-carrying capability is analyzed and the density and service life of the capacitor developed reach 2.7 MJ/m3 over 850 shots respectively.

关 键 词：电容器 自愈 泄漏 松弛极化 通流能力 

分 类 号：TM53[电气工程—电器]