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Related Experiment Videos

A 16 MJ compact pulsed power system for electromagnetic launch.

Ling Dai1, Qin Zhang1, Heqing Zhong1

  • 1State Key Laboratory of Advanced Electromagnetic Engineering and Technology, HuaZhong University of Science and Technology (HUST), Wuhan 430074, China.

The Review of Scientific Instruments
|August 3, 2015
PubMed
Summary

A new 16 MJ pulsed power system (PPS) for electromagnetic railguns was developed. This system enhances discharge current estimation accuracy and optimizes coaxial cable design for improved performance and durability.

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Area of Science:

  • Electrical Engineering
  • Applied Physics
  • Materials Science

Background:

  • Electromagnetic railguns require high-energy pulsed power systems (PPS) for launch.
  • Accurate estimation of discharge current and component durability are critical for PPS design.
  • Existing PPS designs face challenges with component wear, particularly coaxial discharge cables.

Purpose of the Study:

  • To establish a compact 16 MJ pulsed power system (PPS) for electromagnetic railgun applications.
  • To improve the accuracy of discharge current estimation in pulse forming units (PFUs).
  • To enhance the durability and current-carrying capacity of coaxial discharge cables within the PPS.

Main Methods:

  • Development of a 16 MJ PPS comprising a pulsed forming network (PFN) with 156 PFUs, chargers, and monitoring systems.

Related Experiment Videos

  • Experimental investigation and logarithmic function modeling of pulse thyristor on-state characteristics.
  • Finite element method (FEM) analysis to calculate electromagnetic fields within coaxial cables.
  • Optimization of coaxial cable structure based on FEM results.

    • Main Results:

    • A functional 16 MJ PPS was successfully established.
    • Pulse thyristor on-state characteristics were accurately modeled, improving discharge current estimation.
    • The simulated and experimental current waveforms for single PFUs showed good agreement.
    • Optimized coaxial cable structure demonstrated improved limit current values.

    Conclusions:

    • The developed PPS meets the requirements for electromagnetic railgun applications.
    • The improved current estimation and cable design contribute to enhanced PPS reliability and performance.
    • The study provides a foundation for further advancements in high-power pulsed systems.