摘要
根据陶瓷介质材料具有高介电常数和高工作场强的特性,从理论上分析了陶瓷电容器具有的储能密度高、可工作在数kHz至数MHz的振荡放电回路中和老化缓慢等特性。对试制的1μF/500V的多层陶瓷电容器(MLC)试样品进行了750V的1min直流耐压和100Hz重复充放电等可靠性试验研究,结果表明:该MLC在500V工作电压下(对应的体积储能密度达到720J/L)重复充放电寿命达107次以上;50kHz振荡放电输出电流峰值达320A;试验前后电气性能保持不变。因此,这种陶瓷电容器适合用作强脉冲大功率电源的储能元件。
Ceramic dielectric material is characterized of high dielectric constant and high working electric field. According to the excellent performance of the ceramic, this paper theoretically analyzes the capacitors made from such materials, which can work in oscillated discharging circuit in the frequency from some kHz to several MHz with slow-aging. The reliability of high energy density multi-layer ceramic capacitor (MLC) has been studied by the 1 μF/500 V species with DC voltage withstanding 750 V 1 min test and repeated charge-discharge in the frequency of 100 Hz. The results show that under the operating voltage of 500 V (the energy density reaches 720 J/L), the MLC has long lifetime over 107 shot times and large output peak current of 320 A in the frequency of 50 kHz, and steady electric performance after the whole experimentation. It can be used as energy storage component in large pulse power electric sources.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2004年第10期1341-1344,共4页
High Power Laser and Particle Beams
基金
国家863计划项目资助课题
关键词
多层陶瓷电容器
高储能密度
频率
老化
可靠性
Aging of materials
Energy storage
Frequencies
Nondestructive examination
Operations research
Reliability
