High Power Laser and Particle Beams, Volume. 36, Issue 2, 025011(2024)

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

Hongqi Zhang, Zhiheng Li, Shaoxiang Ma*, and Ming Zhang
Author Affiliations
  • International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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    Figures & Tables(15)
    Circuit scheme of the acceleration grid power supply
    Waveform of the inverter output phase current
    Schematic diagram of the electromagnetic structure of the step-up transformer
    Computational model for the main insulation simulation
    Electric field distribution of step-up transformer under the lightning impulse
    Snubber circuits for the diodes
    Structure design of the rectifier
    Equivalent circuit of the secondary side of the step-up transformer
    Finite element calculation results on the electric field strength of the rectifier
    Equivalent circuit of the high-voltage filter
    Structural design of the high-voltage filter
    Simulated electric field strength of the filter
    • Table 1. Main design indexes of the acceleration grid power supply

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

      input voltage/kVrated output voltage/kVoutput voltage ripple/%rated output current/ADC-bus voltage/Vpulse width time/s
      10 (50 Hz)−200±525±25003600
      peak fault voltage/kVshort-circuit peak current/Afault energy/Jswitch-off time/μsrestart time/msbreakdown frequency/h−1
      −2503000<10<10020200
    • Table 2. Main electromagnetic design results for the step-up transformer

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

      silicon steel sheetsectional area of the core column/cm2core diameter/mmunit loss of iron core/(W·kg−1)magnetic flux density/Tcore weight/kgsingle-turn voltage/V
      B27R095742.63202.651.2457059.39
      material of winding wireprimary side turnssecondary side turnsprimary-side windingsecondary-side windingprimary-winding current density/(A·mm−2)secondary-winding current density/(A·mm−2)
      oxygen-free copper591387helix typeinner screen continuous type2.531.74
    • Table 3. Component combination and configuration of Rf and Cf in the filter

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

      Cf /nFoperating voltage/kVcomponent combinationnumber of components
      3003606 series 12 parallel72
      Rfoperating voltage/kVcomponent combinationnumber of components
      682204 series 10 parallel40
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    Hongqi Zhang, Zhiheng Li, Shaoxiang Ma, Ming Zhang. Design of high-voltage components for acceleration grid power supply of neutral beam injection system[J]. High Power Laser and Particle Beams, 2024, 36(2): 025011

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    Paper Information

    Category:

    Received: Apr. 30, 2023

    Accepted: Oct. 17, 2023

    Published Online: Mar. 21, 2024

    The Author Email: Shaoxiang Ma (mashaoxiang@hust.edu.cn)

    DOI:10.11884/HPLPB202436.230159

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