多路并联直线型变压器驱动源装置的二维电路模型

范思源; 魏浩; 李鹏超; 邱爱慈

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多路并联直线型变压器驱动源装置的二维电路模型

更新时间：2025-07-23

- 多路并联直线型变压器驱动源装置的二维电路模型
- A Two-Dimensional Transmission Line Circuit Model for Multi-Module LTD-Based Pulsed Power Accelerators
- 默认刊物名称 2025年
- 作者机构：
  
  1.西安交通大学电工材料电气绝缘全国重点实验室,陕西省西安市710049
  2.西北核技术研究所强脉冲辐射环境模拟与效应全国重点实验室,陕西省西安市710024
- 作者简介：
- 基金信息：
  
  数百kV序列脉冲X射线分能区分幅闪光照相系统研制(12027811)
- DOI：
  中图分类号： TM89
- 收稿：2025-06-15，
  
  修回：2025-07-21，
  
  录用：2025-07-23，
- 稿件说明：
移动端阅览
范思源, 魏浩, 李鹏超, 等. 多路并联直线型变压器驱动源装置的二维电路模型[J/OL]. 默认刊物名称, 2025.

FAN Siyuan, WEI Hao, LI Pengchao, et al. A Two-Dimensional Transmission Line Circuit Model for Multi-Module LTD-Based Pulsed Power Accelerators[J/OL]. Moren Journal, 2025.
范思源, 魏浩, 李鹏超, 等. 多路并联直线型变压器驱动源装置的二维电路模型[J/OL]. 默认刊物名称, 2025. DOI：

FAN Siyuan, WEI Hao, LI Pengchao, et al. A Two-Dimensional Transmission Line Circuit Model for Multi-Module LTD-Based Pulsed Power Accelerators[J/OL]. Moren Journal, 2025. DOI：

摘要

为了准确理解多路并联高功率脉冲装置的功率流传输特性并对脉冲源不同步馈电或故障状态时的电参数进行诊断，基于传输线电路编码方法，建立了六路并联直线型变压器驱动源（linear transformer drivers

LTD）脉冲功率装置的二维电路模型，采用LTD脉冲源同步馈电和波形调控两种工作模式下的实验结果对模型进行验证。结果表明，与一维电路模型相比，二维电路模型能够更精确地预测装置输出特性，模拟和实验测量的电压或电流峰值相对偏差小于5%，并可对实验中难以直接测量的电场强度和线电流密度的空间分布特性进行分析。沿绝缘堆-磁绝缘传输线（magnetically insulated transmission line

MITL）系统径向向内，电场强度的角向不均匀系数从29%下降到3%，线电流密度的角向不均匀系数从120%下降到3%。在多路LTD脉冲源输出波形调控时，二维电路模型不仅给出了典型触发时序下负载电流波形，并且获得了绝缘堆-MITL系统不同角向位置的电压和电流空间分布。绝缘堆-MITL的电场强度和线电流密度空间分布极不均匀，沿绝缘堆向内，电场角向不均匀系数从319%下降到26%，线电流密度的角向不均匀系数从1 330%下降到265%。建立的二维电路模型可用于多路并联LTD装置的波形调控和功率传输特性分析。

Abstract

To accurately characterize the power-flow in multi-module pulsed power accelerators and diagnose electrical parameters under asynchronous feeding or fault conditions

a two-dimensional circuit model of a six-module LTD-based pulsed power accelerator was developed using the transmission line circuit code (TL-code). The model was validated against experimental data obtained from two operational modes: synchronous feeding of multiple LTD pulse sources and pulse waveform shaping. Comparative analysis demonstrates that the 2-D circuit model provides significantly improved accuracy in predicting system output characteristics over conventional 1-D models

the relative deviation between the simulated and experimentally measured peak voltages and currents is less than 5%

and the 2-D model is capable of analyzing the spatial distribution characteristics of the electric field strength and the lineal current density that are challenging to measure directly in experiments. Radially inward along the insulator stack-Magnetically Insulated Transmission Line (MITL) system

the angular non-uniformity coefficient of electric field strength decreases from 29% to 3%

and the angular non-uniformity coefficient of lineal current density decreases from 120% to 3%. When the accelerator is working in the pulse shaping mode

the 2-D model successfully simulated both the load current waveform under precisely configured trigger sequences and the spatial distributions of voltage and current at different azimuthal positions in the insulator stack-MITL system. The spatial distribution of electric field strength and lineal current density in the stack-MITL is extremely non-uniform. Moving inward along the insulator stack

the angular non-uniformity coefficient of the electric field decreases from 319% to 26%

while the angular non-uniformity coefficient of the lineal current density decreases from 1 330% to 265%. The established 2-D circuit model serves as an effective tool to analyze power transmission characteristics and optimize pulse waveform control for multi-module LTD-based pulsed power accelerators.

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