高压电器2026，Vol.62Issue(4)：56-65,10.DOI:10.13296/j.1001⁃1609.hva.2026.04.006
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
摘要
Abstract
Pulse transformers are widely used in gas switch triggers.Residual magnetism in the magnetic core leads to weak consistency of the output waveforms during repretitive frequency operation,causing variations in the con⁃duction delay and jitter of the gas switch.Magnetic core reset is an effective method for eliminating the influence of residual magnetism.The current research is primarily based on empirical formulas to estimate the reset current,re⁃sulting in such problems as long resetting time and insufficient accuracy.By testing the pulse magnetization charac⁃teristics of the magnetic core,a field⁃circuit coupling model of the pulse transformer based on core nonlinearity is set up.The effects of remanence and reset processes on the output characteristics are analyzed,and such key param⁃eters as reset current,isolation inductance and bypass capacitance are simulated and optimized.For 20 kV⁃class gas switch triggers,its output performance under repeated⁃frequency conditions is tested in accordance with the op⁃timized magnetic core reset circuit.The experimental results show that the designed DC reset circuit can effectively isolate high⁃voltage pulses and enhances core utilization rate.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 3.32 μs,with a coefficient of variation of 0.42％.The average pulse width is 3.77 μs,with a coefficient of variation of 0.21％.The waveform exhib⁃its high consistency.关键词
脉冲变压器/场路耦合仿真/输出特性/磁芯复位Key words
pulse transformer/field⁃circuit coupling simulation/output characteristics/core reset引用本文复制引用
支玉婷,张家兴,魏笔洋,邱立,方春华,江进波..基于磁芯复位的脉冲变压器剩磁抑制与输出特性分析[J].高压电器,2026,62(4):56-65,10.基金项目
国家自然科学基金项目(51707105) （51707105）
强脉冲辐射环境模拟与效应全国重点实验室基金项目(NKLIPR2406).Project Supported by National Natural Science Foundation of China(51707105),the Fund Project of the State Key Laboratory of Intense Pulsed Radiation Environment Simulation and Effects(NKLIPR2406). （NKLIPR2406）
