用于本质安全电源的新型截流型保护电路  

A novel chopping current protection circuit for intrinsically safe power supply

作　　者：房绪鹏[1] 于志学[1] 秦明[1] 闫鹏[1] 赵珂[1] 

机构地区：[1]山东科技大学电气与自动化工程学院,山东青岛266510

出　　处：《工矿自动化》2016年第12期56-58,共3页Journal Of Mine Automation

基　　金：山东省自然科学基金资助项目(ZR2009FM017);中国博士后科学基金资助项目(20090461254);山东科技大学研究生教育创新计划资助项目(2014BK023)

摘　　要：针对传统截流型保护电路截流值小、抗负载冲击能力差、过流故障解除后需增加恢复电路或手动电路等问题,设计了一种用于本质安全电源的新型截流型保护电路。该电路采用双重并联控制结构,提高了电路可靠性;在负载过流时能够迅速截流,故障解除后可快速投入,且投入点可调节;具有微功耗电路,降低了轻载或空载时的电源损耗。实验结果表明,该电路能够在过流故障解除后自动恢复,负载效应低,带载能力较强。For problems that traditional chopping current protection circuit had small cut-off current value and poor anti load impact ability,and needed additional recovery circuit or manual circuit after overcurrent fault,a novel chopping current protection circuit for intrinsically safe power supply was designed.The circuit adopts double parallel control structure,so as to improve reliability.The circuit can chop circuit rapidly under condition of load over flowing,and put into operation fast after fault with adjusted input point.Meanwhile,the circuit has low power consumption part,so as to reduce power loss under condition of light load or no-load.The experimental results show that the circuit can recover automatically after over-current fault with low load effect and strong load capacity.

关 键 词：本质安全电源 过流保护 截流型保护 自动恢复 

分 类 号：TD60[矿业工程—矿山机电]