Analysis and Comparative Study of Various Charging Methods Implemented for Solid-State Marx Generator

This paper mainly concentrates on the analysis of different charging techniques adopted in the solid-state Marx generator. The unipolar Marx topology has been simulated using resistance, inductive and input switch charging methods. Results obtained by simulations are validated from experimental set-up for a two-stage Marx generator circuit. The characteristics (traits) of each charging method are investigated based upon the parameters such as current drawn by source during charging and discharging instant of capacitors, voltage across the input charging elements, output voltage, load current, degree of isolation provided by each method. Finally, a comparison between all charging methods is carried out for all above-mentioned parameters. Resistance charging is simple and less complex method. Boosting phenomenon of the output voltage pulse is obtained from the RL charging method. This method also limits the source current too few milliamperes as compared to the other two methods. Switch charging method provides complete isolation from the high-voltage source during the erection of Marx generator.