摘要
高压脉冲功率技术在国防、绝缘材料、生物医学工程等领域具有广泛应用,为研究百纳秒脉冲电场对细胞产生的生物电学效应,设计了一种基于“背靠背”充电、混合式隔离的全固态Marx百纳秒脉冲发生装置。该装置共5级,以MOSFET作为放电主开关,共包含9个电容及5个开关,减少了开关使用数量。每级模块包含2个电容及1个MOSFET开关,并采用电阻隔离的正极性回路和二极管隔离的负极性回路两部分分别对2个电容充电,实现“背靠背”式连接。采用Pspice软件验证了该拓扑结构的可行性。该百纳秒脉冲装置采用可编程门阵列产生控制信号,输出的高压脉冲参数为:电压幅值0~4.3 kV,脉冲宽度0.3~5μs,重复频率0.001~10 kHz,上升沿42ns。该装置的脉冲宽度、幅值及频率均灵活可调,通过模块化设计,可增加模块数量进一步提高输出电压幅值。
High voltage pulsed power technology has a wide range of applications in the fields of national defense,insulation materials,biomedical engineering,etc.In order to study the bioelectric effect of hundreds-nanosecond pulse electric fields on cells,an all-solid-state Marx hundreds-nanosecond generator based on’back-to-back’charging and hybrid isolation has been designed.The device has 5 stages,with MOSFET as the main discharge switch,contains 9 capacitors and 5 switches,thus the switch usage is reduced.The module at each level contains 2 capacitors and 1 MOSFET switch,and 2 capacitors are charged separately by the positive polarity loop isolated by the resistance and the negative polarity loop isolated by the diode to achieve’back-to-back’connection.The Pspice software is used to verify the feasibility of the topology.The hundreds-nanosecond pulse device uses a field programmable gate array(FPGA)to generate control signals,and the output high-voltage pulse parameters are as follows:the voltage amplitude is 0~4.3 kV,the pulse width is 0.3~5μs,the repetition frequency is 0.001~10 kHz,and the rising edge is 42 ns.The pulse width,amplitude and frequency of the device are all flexibly adjustable.Through the modular design,the number of modules can be increased to further improve the output voltage amplitude.
作者
程显
卓远
吕彦鹏
王振伟
陈硕
CHENG Xian;ZHUO Yuan;LÜYanpeng;WANG Zhenwei;CHEN Shuo(School of Electrical Engineering,Zhengzhou University,Zhengzhou 450001,China;Henan Engineering Research Center of Power Transmission&Distribution Equipment and Electrical Insulation,Zhengzhou 450001,China)
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2022年第4期1582-1589,共8页
High Voltage Engineering
基金
国家自然科学基金(51977195
52007172)
河南省科技攻关计划项目(192102210142
212102310247)。
