全固态参数可调脉冲电流源的研制  

Development of an All-Solid-State Pulse Current Generator with Adjustable Parameters

作　　者：董守龙[1] 赵立胜 项思哲 姚陈果[1] 余亮[1] Dong Shoulong;Zhao Lisheng;Xiang Sizhe;Yao Chenguo;Yu Liang(State Key Laboratory of Power Transmission Equipment Technology Chongqing University,Chongqing 400044 China)

机构地区：[1]输变电装备技术全国重点实验室(重庆大学),重庆400044

出　　处：《电工技术学报》2025年第3期812-820,共9页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金重点项目(52237010,52477229);中央高校基本科研业务费专项资金(2023CDJYGRH-ZD04,2023CDJKYJH075);重庆市自然科学基金面上项目(CSTB2024NSCQ-MSX0618)资助。

摘　　要：针对小负载阻值测量场景,该文提出了一种基于全固态方波脉冲电流源的新测量方法。全固态方波脉冲电流源采用现场可编程逻辑门阵列(FPGA)作为控制系统,使用金属-氧化物半导体场效应晶体管(MOSFET)作为控制开关,该系统采用模块化设计,每个模块包括一个二极管、一个开关和一个电感。开关导通时,电感串联充电;开关断开时,电感并联向负载放电。通过仿真验证了该拓扑的正确性和可行性。搭建了实验样机,样机可以在5?负载下产生800 ns灵活可调脉冲电流方波。最后,采用标称为0.05?的小负载进行系统测试,系统测试结果与商用精密电阻测试仪测试结果误差在1.5%以内。Pulsed power technology is an electrophysical technology that rapidly compresses energy of low amplitude over a long period of time and releases it to the load side in a short period of time.It is widely used in biomedicine,plasma discharge,electromagnetic catapult and other military and defense fields.Pulsed power technology is widely used in the direction of wide bandwidth and high power.Pulsed power supply is divided into pulsed voltage source and pulsed current source(XRAM).Pulsed voltage source of the form of energy storage for the electric field,energy storage device for the capacitor,which can produce high amplitude narrow pulse width voltage.A pulsed current source stores energy in the form of a magnetic field,and the storage device is an inductor,which generates a high amplitude narrow pulse width current,and the output is in the form of a current.Nowadays,whether semiconductor devices,patch components or contact parts,due to the inherent characteristics of materials and process limitations,they are not ideal components and have certain parasitic parameters.Traditionally,the main methods of small load measurement include Ohm's law method,bridge measurement,impedance analyzer measurement and so on,which should avoid the problem of resistance change due to temperature rise in the process of application.The pulse current source proposed in this paper uses FPGA as the controller,MOSFET as the control switch,the pulse width is flexible and adjustable,and the output waveform is a square wave pulse.Firstly,in order to facilitate the elucidation of its operation,a four-stage pulse current source is illustrated in this paper.The circuit uses a MOSFET as the main switch,and the pulse-forming circuit includes a switch,an inductor,and two diodes for each stage of the module.Mode 1 is the charging phase:all switches are on and the pulse source operates in charging mode.The DC voltage source charges the inductor in series,all diodes are in cutoff state in this charging phase.Mode 2 is the discharge phase:all switches

关 键 词：脉冲功率技术 脉冲恒流源 小负载测试 脉冲电流 

分 类 号：TN78[电子电信—电路与系统] TM93[电气工程—电力电子与电力传动]