研制了一种主要用于测试电容器在不同电压下短路放电寿命的测试平台,采用谐振充电、脉冲变压器升压和可控火花开关相结合的技术路线,可在2.5 nF负载电容器上得到超过100 kV的高压,短路放电采用可控火花开关,最大放电电流约7 kA,最高重复频率为50 Hz,输出电压和重复频率都可调节,可测试在不同电压、不同重复频率和不同工作时间下电容器的失效机制。通过计算机控制平台的运行,可自动记录工作次数,方便统计电容器寿命。

In order to test the capacitors lifetime at different voltage under short circuit, a lifetime test platform is designed based on resonant charge and pulsed transformer and discharge switch. The platform has met the following design specifications on the 2.5 nF capacitor: more than 100 kV output voltage, about 7 kA discharge current, 50 Hz repetition frequency and up to 5 min runtime. The platform is controlled by a PC and can record runtime automatically.