To meet the requirements of engineering research on a large caliber electrothermal chemical gun system

we developed a compact pulsed power module. According to the conclusions of previous launch tests and the requirements of the launching system for the ability of working continuously at a repeated frequency and in a constrained space

we determined the technical parameters

circuit topology

and power device schemes of the module. Moreover

aiming at the characteristics of power devices

we proposed an integrated structure of the common electrode and the active-passive embedded heat management scheme. The improvement of structure and manufacturing technology ensured the power devices to adapt to the strong vibration environment of artillery firing and also verified its anti-vibration ability by scaled prototypes. On the basis of studies on the design of embedded heat dissipation structure

the anti-vibration test

and the design of integrated structure

the module with compact structure

high energy storage density

adaptability to strong vibration environment and continuous working ability at a repeated frequency was developed by means of multi-physical field simulation and analysis. The feasibility of the research scheme of the compact module was verified by simulated load discharge tests and launching experiments of the electrothermal chemical gun. The compact module

whose energy storage density is 1.4 MJ/m3

can work continuously for three times at a frequency of six times per minute under short-circuit load condition and the natural cooling mode. The research results can promote the engineering developments in electrothermal chemical launch technology

and provide a technical reserve for the future development of miniaturized pulsed power supply with large energy storage.