Note: Compact, reusable inductive-storage-cum-opening-switch based 1.5 GW single-shot pulsed power generator

Area of Science:

• Pulsed Power Technology
• Electrical Engineering
• High Energy Density Physics

Background:

• Developing compact and efficient pulsed-power generators is crucial for applications requiring high peak power.
• Existing systems often face limitations in size, weight, and complexity.
• Inductive storage combined with high-voltage switching presents a promising avenue for miniaturization.

Purpose of the Study:

• To present the design and performance of a very-compact and lightweight pulsed-power generator.
• To demonstrate the effectiveness of an optimized exploding wire switch and air switches in such a system.
• To highlight the self-inductance capability of the Marx generator design.

Main Methods:

• The generator integrates a Marx generator and an inductor within a 0.20 m diameter and 0.75 m length cylinder.
• A single optimized exploding copper wire serves as the opening switch.
• Air is utilized for all generator switches, including the Marx generator's closing switches and the exploding wire's opening switch.

Main Results:

• The generator is compact (0.20 m diameter, 0.75 m length) and lightweight (<15 kg).
• A peak power of 1.5 GW was achieved with a load voltage of 125 kV.
• The pulse width at half maximum (FWHM) was measured at 150 ns.

Conclusions:

• The developed pulsed-power generator offers a highly compact and lightweight solution.
• The use of an optimized exploding wire and air switches simplifies the design and enhances attractiveness.
• The inherent inductance of the Marx generator shape contributes to efficient inductive storage.