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20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
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Research on high-precision pulse power supply.

Qi Zhu1, Ling Dai1, Yuchen Zhang1

  • 1State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan, Hubei 430000, China.

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|September 1, 2022
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Summary
This summary is machine-generated.

This study develops a high-precision pulse power supply, achieving precision within 2.1‰ with active temperature control. The research guides device selection and temperature management for enhanced pulse power systems.

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Area of Science:

  • Electrical Engineering
  • Pulse Power Systems
  • High-Precision Measurement

Background:

  • Advancements in pulse power technology necessitate higher precision in power supply systems.
  • Improving the precision of pulse power supplies is a critical area of current research.
  • Existing systems face challenges in maintaining stability and accuracy under varying conditions.

Purpose of the Study:

  • To establish and evaluate a 20 kJ high-precision pulse power supply.
  • To define and quantify the precision of pulse power supplies using key characteristic parameters.
  • To investigate the impact of active temperature control on power supply precision and stability.

Main Methods:

  • Construction of a 20 kJ pulse power supply utilizing a high-capacity capacitor, pulse-forming inductor, thyristor, and diodes.
  • Theoretical derivation of numerical expressions for power supply precision based on electrical parameters.
  • Experimental validation of active temperature control and life testing of the pulse power supply.

Main Results:

  • Achieved precision parameters: current peak (Imax) < 1.2‰, rise time (Tr) < 1.8‰, and pulse width (Tw) < 2.1‰ within 10-30°C ambient temperature.
  • Identified a 6.5‰ error in rated Imax due to ambient temperature variations (0.7 kA extreme difference).
  • Life test revealed a decrease in capacitance (1.19‰) and inductance (3.73‰) with increased discharge cycles.

Conclusions:

  • The developed 20 kJ pulse power supply demonstrates high precision, reaching thousandths with active temperature control.
  • Active temperature control is crucial for maintaining the precision of pulse power supplies.
  • Controlling device temperature and discharge voltage are key strategies for sustaining power supply accuracy over time.