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中性束注入系统加速极电源高压部件设计

张鸿淇 李志恒 马少翔 张明

张鸿淇, 李志恒, 马少翔, 等. 中性束注入系统加速极电源高压部件设计[J]. 强激光与粒子束, 2024, 36: 025011. doi: 10.11884/HPLPB202436.230159
引用本文: 张鸿淇, 李志恒, 马少翔, 等. 中性束注入系统加速极电源高压部件设计[J]. 强激光与粒子束, 2024, 36: 025011. doi: 10.11884/HPLPB202436.230159
Zhang Hongqi, Li Zhiheng, Ma Shaoxiang, et al. Design of high-voltage components for acceleration grid power supply of neutral beam injection system[J]. High Power Laser and Particle Beams, 2024, 36: 025011. doi: 10.11884/HPLPB202436.230159
Citation: Zhang Hongqi, Li Zhiheng, Ma Shaoxiang, et al. Design of high-voltage components for acceleration grid power supply of neutral beam injection system[J]. High Power Laser and Particle Beams, 2024, 36: 025011. doi: 10.11884/HPLPB202436.230159

中性束注入系统加速极电源高压部件设计

doi: 10.11884/HPLPB202436.230159
基金项目: 国家重点研发计划项目(2017YFE0300104); 国家自然科学基金项目(51821005)
详细信息
    作者简介:

    张鸿淇,hardyzane@hust.edu.cn

    通讯作者:

    马少翔,mashaoxiang@hust.edu.cn

  • 中图分类号: TM832

Design of high-voltage components for acceleration grid power supply of neutral beam injection system

  • 摘要: 基于负离子的中性束注入是未来大型托卡马克装置不可或缺的辅助加热方式。中性束系统中的加速极电源需要输出−200 kV电压和5 MW的功率,还经常面临负载短路和断路的特殊工况。过去对加速极电源的研究中缺少高压部分的方案设计,而电源中高压部件的绝缘设计是电源研制过程中必不可少的关键环节。据电源指标和特殊工况的特点,计算了电源高压部分的隔离升压变压器、高压整流器和高压滤波器的电路参数,并对这些部件基于油浸式绝缘进行了工程设计,通过有限元仿真分析进行了绝缘验证。仿真结果表明,这些部件中的电场强度最高为16.22 kV/mm,小于变压器油击穿场强并具有2倍的绝缘裕度。设计的高压部件结构可以满足电源的绝缘要求。
  • 图  1  加速极电源电路方案

    Figure  1.  Circuit scheme of the acceleration grid power supply

    图  2  逆变器输出相电流波形

    Figure  2.  Waveform of the inverter output phase current

    图  3  隔离升压变压器主体电磁结构示意图

    Figure  3.  Schematic diagram of the electromagnetic structure of the step-up transformer

    图  4  主绝缘仿真计算模型

    Figure  4.  Computational model for the main insulation simulation

    图  5  雷电冲击下隔离升压变压器电场强度分布

    Figure  5.  Electric field distribution of step-up transformer under the lightning impulse

    图  6  二极管缓冲电路

    Figure  6.  Snubber circuits for the diodes

    图  7  整流器结构设计

    Figure  7.  Structure design of the rectifier

    图  8  隔离升压变压器副边等效电路

    Figure  8.  Equivalent circuit of the secondary side of the step-up transformer

    图  9  整流器电场强度有限元计算结果

    Figure  9.  Finite element calculation results on the electric field strength of the rectifier

    图  10  高压滤波器等效电路

    Figure  10.  Equivalent circuit of the high-voltage filter

    图  11  高压滤波器结构设计

    Figure  11.  Structural design of the high-voltage filter

    图  12  滤波器电场强度仿真结果

    Figure  12.  Simulated electric field strength of the filter

    表  1  加速极电源的主要设计指标

    Table  1.   Main design indexes of the acceleration grid power supply

    input voltage/kV rated output voltage/kV output voltage ripple/% rated output current/A DC-bus voltage/V pulse width time/s
    10 (50 Hz) −200 ±5 25 ±2500 3600
    peak fault voltage/kV short-circuit peak current/A fault energy/J switch-off time/μs restart time/ms breakdown frequency/h−1
    −250 3000 <10 <100 20 200
    下载: 导出CSV

    表  2  隔离升压变压器的主要电磁设计结果

    Table  2.   Main electromagnetic design results for the step-up transformer

    silicon steel
    sheet
    sectional area of
    the core column/cm2
    core diameter/mm unit loss of
    iron core/(W·kg−1)
    magnetic flux
    density/T
    core weight/kg single-turn
    voltage/V
    B27R095742.63202.651.2457059.39
    material of
    winding wire
    primary side
    turns
    secondary side
    turns
    primary-side
    winding
    secondary-side
    winding
    primary-winding
    current
    density/(A·mm−2)
    secondary-winding
    current
    density/(A·mm−2)
    oxygen-free copper591387helix typeinner screen continuous type2.531.74
    下载: 导出CSV

    表  3  滤波器RfCf的元件组合及配置

    Table  3.   Component combination and configuration of Rf and Cf in the filter

    Cf /nF operating voltage/kV component combination number of components
    300 360 6 series 12 parallel 72
    Rf operating voltage/kV component combination number of components
    68 220 4 series 10 parallel 40
    下载: 导出CSV
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出版历程
  • 收稿日期:  2023-04-30
  • 修回日期:  2023-10-17
  • 录用日期:  2023-10-17
  • 网络出版日期:  2023-10-23
  • 刊出日期:  2024-01-12

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