基于磁芯复位的脉冲变压器剩磁抑制与输出特性分析
Analysis of Residual Magnetism Suppression and Output Characteristics on Pulse Transformer Based on Core Reset
- 高压电器 2026年
- 作者机构：
1.三峡大学电气与新能源学院，湖北 宜昌 443002
2.湖北省输电线路工程技术研究中心（三峡大学），湖北 宜昌 443002
3.国网河南省电力公司三门峡供电公司，河南 三门峡，472000
- 作者简介：
支玉婷(2002—)女，硕士研究生，主要研究方向为脉冲功率技术。(E-mail: 17839238786@163.com)
张家兴(2000—)男，硕士研究生，主要研究方向为脉冲功率技术。(Email: ezjiaxing@163.com)
魏笔洋(1999—)男，硕士研究生，主要研究方向为脉冲功率技术。(Email: WeiBy0601@163.com)
江进波(1988—)男，博士，副教授，主要研究方向为脉冲功率技术和高电压与绝缘技术。(通讯作者)(E-mail: jinbojiang@163.com)
- 基金信息：国家自然科学基金青年基金(51707105);强脉冲辐射环境模拟与效应全国重点实验室基金项目资助(NKLIPR2406)
DOI：
中图分类号：收稿：2025-11-25，
修回：2025-12-17，
录用：2025-12-22，
- 稿件说明：
移动端阅览
支玉婷, 张家兴, 魏笔洋, 等. 基于磁芯复位的脉冲变压器剩磁抑制与输出特性分析[J/OL]. 高压电器, 2026.
ZHIYuting, ZHANGJiaxing, WEIBiyang, et al. Analysis of Residual Magnetism Suppression and Output Characteristics on Pulse Transformer Based on Core Reset[J/OL]. High Voltage Apparatus, 2026.
摘要
脉冲变压器广泛应用于气体开关触发器，磁芯剩磁导致触发器在重频运行时输出波形的一致性不高，使气体开关导通时延和抖动发生变化。磁芯复位是消除剩磁影响的有效方法，目前研究多基于经验公式估算复位电流，存在复位时间长、精度不足的问题。通过测试磁芯的脉冲磁化特性，建立了基于磁芯非线性的脉冲变压器场路耦合模型，分析剩磁与复位过程对输出特性的影响，并对复位电流大小、隔离电感及旁路电容等关键参数进行了仿真优化。针对20kV级气体开关触发器，依据优化的磁芯复位电路，测试其重频工况下的输出性能。实验结果表明，设计的直流复位电路可以隔离脉冲高压，提高磁芯利用率，脉冲输出波形的平均幅值为19.88kV，离散系数为0.08%，脉冲前沿平均值为3.32μs，离散系数为0.42%，脉宽平均值为3.77μs，离散系数为0.21%
波形的一致性较高。
Abstract
Pulse transformers are widely used in gas switch triggers. Residual magnetism in the magnetic core causes inconsistent output waveforms during operation in trigger repetition frequency conditions
resulting in changes in the turn-on delay and jitter of the gas switch. Magnetic core demagnetization is an effective method for eliminating the influences of residual magnetism. Current research primarily relies on empirical formulas to estimate the reset current
resulting in problems such as long demagnetization time and insufficient accuracy. According to testing the pulse magnetization characteristics of the magnetic core
a pulse transformer field-circuit coupling model based on core nonlinearity was established. The effects of remanence and reset processes on the output characteristics of the magnetic were analyzed
and key parameters such as reset current
isolation inductance
and bypass capacitance were simulated and optimized. For 20kV-class gas switch triggers
the output performance under repeated-frequency conditions was tested based on an optimized magnetic core reset circuit. Experimental results demonstrate that the designed DC reset circuit effectively isolates high-voltage pulses and enhances core utilization. The average amplitude of the pulse output waveform is 19.88 kV
with a coefficient of variation of 0.08%. The average pulse rise time is 3.32μs
with a coefficient of variation of 0.42%. The average pulse width is 3.77μs
with a coefficient of variation of 0.21%. The waveform exhibits high consistency.
关键词
Keywords
references
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