新型电磁感应式无源触发器分析与设计  

Analysis and design of a new electromagnetic induction passive trigger

作　　者：吕智勇 岳海波 王向军[1] 庄劲武[1] 李思光[1] 薛婕 袁志方 武瑾[1] 马丽莉 LU Zhiyong;YUE Haibo;WANG Xiangjun;ZHUANG Jinwu;LI Siguang;XUE Jie;YUAN Zhifang;WU Jin;MA Lili(College of Electrical Engineering,Naval University of Engineering,Hubei Wuhan 430033,China;Marine Design and Research Institute of China,Shanghai 200011,China;National Key Laboratory of Science and Technology on Vessel Integrated Power System,Naval University of Engineering,Hubei Wuhan 430033,China;Jiangnan Shipbuilding(Group)Co.,Ltd.,Shanghai 201913,China)

机构地区：[1]海军工程大学电气工程学院,湖北武汉430033 [2]中国船舶集团第七〇八研究所,上海200011 [3]海军工程大学舰船综合电力技术国防科技重点实验室,湖北武汉430033 [4]江南造船(集团)有限责任公司,上海201913

出　　处：《工业仪表与自动化装置》2024年第3期3-8,共6页Industrial Instrumentation & Automation

基　　金：国家自然科学基金(电磁轨道发射混合储能系统尽限应用的短路保护机理研究,52107136)。

摘　　要：针对混合型限流熔断器中电子触发器存在的有源触发和不能全范围分断问题,该文提出了一种能够实现无源供电且具备全范围分断能力的新型电磁感应式无源触发器方案。首先介绍了新型触发器的工作原理,开展了自感应供电、幅值整定两个内容的分析设计;然后利用有限元仿真软件将电磁场和电路进行耦合建模,基于该模型分析了铁芯线圈磁感应强度随位置的变化特性;提出了采用单霍尔芯片进行短路电流幅值判断的方法,减小了芯片的功耗,从而解决了新型触发器在低上升率工况下感应供电不足的问题;同时为了提高触发器的可靠性,设计了延时控制电路;最后根据设计参数制造样机,在短路判断幅值10 kA的限流条件下分别对混合型限流熔断器进行了8 A/μs最小短路电流上升率和33 A/μs最大短路电流上升率的检测试验,试验结果验证了分析设计方法的可行性和有效性。In view of the problem that the electronic trigger active power supply and the arc trigger in the hybrid current limiting fuse cannot be fully disconnected and heated,this paper presents a passive electromagnetic induction trigger scheme with full range breaking capability.This paper introduces its working principle,and focuses on the analysis and design of two functional modules:self-induced power supply and amplitude setting.The electromagnetic field and circuit are coupled by the finite element method,and the variation characteristics of magnetic induction intensity of iron core coil with position are studied.At the same time,in order to solve the problem of insufficient supply of induced voltage under low rise rate,a single Hall chip is proposed to judge the amplitude of short-circuit current to reduce power consumption.In order to improve the reliability of trigger,a delay control circuit is designed.Finally,the engineering prototype is designed according to the simulation parameters,and the minimum short-circuit current rise rate of the rated 4000 V/6000 A fuse is 8 A/μs and maximum short circuit rise rate 33 A/μs.The test is carried out under the current limiting requirement of 10 kA short-circuit judgment amplitude,and the test results verify the feasibility and effectiveness of the design scheme.

关 键 词：短路 电磁感应 触发器 霍尔芯片 故障检测 

分 类 号：TM933[电气工程—电力电子与电力传动]