基于磁隔离驱动的双极性Marx脉冲源研制  

The Development of Bipolar Marx Pulse Generator Based on Magnetic Isolated Driver

作　　者：董守龙[1] 周晓宇 余亮 刘鑫[1,2] 姚陈果[1] Dong Shoulong;Zhou Xiaoyu;Yu Liang;Liu Xin;Yao Chenguo(State Key Laboratory of Power Transmission Equipment&System Security and New Technology Chongqing University,Chongqing 400030 China;Institute of Electronic Engineering China Academy of Engineering Physics,Mianyang 621999 China)

机构地区：[1]输配电装备及系统安全与新技术国家重点实验室(重庆大学),重庆400030 [2]中国工程物理研究院电子工程研究所,绵阳621999

出　　处：《电工技术学报》2023年第8期2015-2024,共10页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金青年科学基金项目(51807016,51907011);重庆市自然科学基金面上项目(cstc2020jcyj-msxmX0932);中央高校基本科研业务费(2020CDJYGSX001,2020CDJYGDQ008);重庆市高等教育教学改革研究项目(213052)资助。

摘　　要：该文针对脉冲功率技术在食品杀菌处理等领域的双极性高电压应用需求,设计了一种基于磁隔离驱动的全固态双极性Marx脉冲源。该双极性脉冲源主电路采用双Marx型电路拓扑。驱动电路采用磁心传递控制信号,利用磁心堆叠和次级绕组反并联方式,使得系统仅需两路驱动信号即可实现双Marx主电路拓扑中四种开关的控制。驱动电路结构简单可靠,开关同步性高。基于此驱动电路和主电路,筛选了主要器件,开展了相应仿真,最终研制出全固态双极性脉冲源样机,并开展了样机的性能测试。测试结果表明,该脉冲源输出电压为0~±20 kV,脉冲宽度为3~10μs,最大重复频率为200 Hz。脉冲源的输出电压、脉冲宽度、重复频率及正负脉冲间距均灵活可调,并可通过增加Marx模块的数量来实现更高等级的输出电压。In liquid food sterilization,a bipolar high-voltage pulsed electric field provides a better sterilization effect and inhibits electrode corrosion to prevent food contamination.Traditional bipolar Marx pulse generator contains the main and truncated switches(MS&TS).The MS and TS are usually driven by an optical fiber signal,and the optical fiber modules are powered by DC isolated sources.Hence,the output amplitude of the bipolar Marx generator is limited by isolated DC sources,making it difficult to achieve high-voltage output.The conventional magnetic isolated driver can solve the high overhang problem of driving potential,but needs to meet the control requirements of these two types of switches.Therefore,this paper proposes a design of the bipolar pulse generator based on a magnetic isolated drive.It can solve the problem of high-voltage isolated drive and meet the control requirement of bipolarity,finally realizing the bipolar high-voltage pulse output.Firstly,the circuit design is carried out in this paper.The dual Marx-type circuit topology is adopted for the main circuit of the bipolar pulse generators.The drive circuit for this topology uses the magnetic core to transfer the control signal,including core stacking,in-phase winding,and inverse paralleled winding.It only needs one drive signal to realize the synchronous conduction of the MS or TS,and the complementary conduction of both.To ensure a reliable deadtime between the complementary conduction,the gate resistance value of the sub-driver circuit of the magnetic isolated drive is adjusted accordingly.The gate different resistance values of the sub-driver circuits can form conduction delays of their sub-switches,so the MS and TS own a sufficient deadtime during the on-off process.Then the second delayed control signal realizes the control of the MS and TS in another Marx module,which finally meets the control requirements of the dual Marx-type pulse generator.Secondly,the selection of key components,such as MOSFET,fast recovery isolation diode,energy sto

关 键 词：脉冲功率技术 双极性脉冲 MARX电路 磁隔离驱动 固态开关 

分 类 号：TM832[电气工程—高电压与绝缘技术]