摘要
提出截止型输出短路保护方式下本质安全型开关变换器火花放电的容性等效电路模型。通过在IEC火花试验装置上进行试验,研究截止型保护方式下容性电路火花放电的规律,建立截止型保护方式下容性电路火花放电数学模型。分析与实验表明,建立的数学模型与实际基本相符;截止放电模式与自然放电模式在火花放电规律方面有显著的差异;截止放电模式下减小截止时间和减小电容值均能提高本质安全性能,但在不同取值范围效果不同。
It was proposed that the equivalent circuit model of intrinsically safe switching converter with cut-off type output short circuit protection was capacitive circuit with cut-off type protection.The discharge characteristic of the capacitive circuit with cut-off type protection was found out through a large number of spark discharge experiment in IEC spark test apparatus.The spark discharge mathematical model was established.Analysis and experimental results show that mathematical model is consistent with the reality.The spark discharge laws are significant differences between natural discharge mode and cut-off discharge mode.Under natural discharge mode,both shortening the discharge time and reducing the capacitance value could improve the performance of intrinsical safety,but there are different effects in different value range.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2013年第3期517-521,共5页
Journal of China Coal Society
基金
中央高校基本科研业务费专项资金资助项目(2012QNB30)
国家高技术研究发展计划(863)资助项目(2008AA062200)
江苏省"青蓝工程"基金资助项目(苏教师[2010]27号)
关键词
容性电路
截止放电模式
火花放电
数学模型
本质安全
capacitive circuit
cut-off discharge mode
spark discharge
mathematical model
intrinsical safety
