20 kV/20 kHz/100 A高压脉冲源设计

石小燕; 丁恩燕; 梁勤金; 杨周炳; 张运检

doi:10.11884/HPLPB201830.170360

20 kV/20 kHz/100 A高压脉冲源设计

doi: 10.11884/HPLPB201830.170360

中国工程物理研究院应用电子学研究所, 高功率微波技术重点实验室, 四川绵阳 621900

基金项目:

国家重点研发计划资助项目 2017YFF0104300

详细信息

作者简介:
石小燕(1971—)，女，高级工程师，从事固态脉冲功率技术研究；368229630@qq.com

中图分类号: TN788
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- 被引次数: 0
出版历程
- 收稿日期: 2017-09-07
- 修回日期: 2017-11-27
- 刊出日期: 2018-04-15

Design of 20 kV/20 kHz /100 A high voltage pulse generator

Science and Technology on High Power Microwave Laboratory, Institute of Applied Electronics, CAEP, Mianyang 621900, China

摘要

摘要: 设计了一种基于功率金属氧化物半导体场效应晶体管(MOSFET)为开关的高压脉冲电源。采用自匹配传输线结构线路形式，串联多个以光纤信号隔离触发的MOSFET作为高耐压开关，在传输线的外皮产生2个纳秒脉冲，再用传输线变压器对2个纳秒脉冲进行功率合成，在200 Ω负载上输出了幅度20 kV，重复频率20 kHz，脉冲宽度约40 ns的脉冲。分析脉冲源装置结构，对实验装置建立仿真模型，阐述了输出波形畸变的原因，给出了影响输出脉冲波形特性的因素，为下一步优化波形工作提供了理论参考。
- 高压脉冲 /
- 自匹配传输线 /
- 光隔离 /
- 传输线变压器 /
- 功率合成
Abstract: The paper presents a design of high voltage pulse generator based on high voltage switch formed by a stack of metal oxide semiconductor field-effect transistor (MOSFET). Two pulses at both ends of out metal layer in transmission line are generated by the self-matched transmission line circuit using high voltage switch made by many opto-isolator triggering MOSFETs in series. Then, a higher power pulse with amplitude of 20 kV on 200 Ω load, duration of about 40 ns and repetition frequency of 20 kHz is generated by the technique that transmission line transformers (TLTs) synthesize two pulses. An emulational circuit model is designed after the structure of pulse generation device is analyzed. The distortion of output pulse is analyzed by the model. Factors influencing the output pulse waveform are discussed. A reference for optimizing output pulse is put forward.
- high voltage pulse /
- self-matched transmission line /
- opto-isolator /
- transmission line transformer /
- power-combining

HTML全文

图 1 脉冲产生线路原理图

Figure 1. Circuit schematics of pulse generator

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图 2 单级MOSFET线路结构图

Figure 2. Electrical schematic of single cell

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图 3 MOSFET时序产生部件示意图

Figure 3. Functional block diagram of MOSFET timing device

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图 4 脉冲源主要结构装置

Figure 4. Main structure of pulse generator

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图 5 25级脉冲源输出波形

Figure 5. Output pulse wave of 25-cell stack

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图 6 脉冲发生器仿真线路及仿真波形

Figure 6. Emulational circuit and waveform of pulse generator

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