Investigation on a low-impedance solid-state pulse forming line based on (Ba,Sr)TiO3 ceramics

Area of Science:

• Materials Science
• Electrical Engineering
• Physics

Background:

• Solid-state dielectric materials are crucial for compact pulsed power systems.
• Barium strontium titanate (BST) ceramic offers high relative permittivity and voltage tolerance.
• Pulse forming lines (PFLs) require efficient dielectric materials for modulation.

Purpose of the Study:

• To investigate BST ceramic as a pulse modulation dielectric in a PFL.
• To design and analyze an Ω-shaped electrode structure for enhanced PFL performance.
• To experimentally validate the developed BST ceramic-based PFL.

Main Methods:

• Numerical analysis of pulse transmission and modulation in the Ω-shaped BST PFL.
• Fabrication of the BST ceramic-based PFL with specific dimensions (174 × 84 × 10 mm³).
• Experimental testing of the PFL with a charging voltage of 24 kV and a 3 Ω matched load.

Main Results:

• The Ω-shaped electrode design improved voltage strength and output pulse duration.
• Achieved square-shaped pulses with a peak voltage of 12 kV and a duration of approximately 141 ns.
• The PFL demonstrated a high energy density of 11.7 J/L.

Conclusions:

• BST ceramic is a viable dielectric for compact solid-state pulsed power systems.
• The Ω-shaped electrode configuration is effective for enhancing PFL performance.
• The developed PFL meets the requirements for practical pulsed power applications.