Iranian Journal of Electrical and Electronic Engineering

Marx generators that produce output pulses in the range of a few kilovolts (kV) with energies of a few millijoules (mJ) and rise times of a few nanoseconds (ns) have a variety of applications, including enhancing hydrogen production through electrolysis. In these generators, bipolar junction transistors (BJTs) operating in avalanche breakdown mode are employed as switches. This study explores the use of transistors specifically designed for avalanche breakdown to improve hydrogen generation efficiency from renewable energy sources. For this purpose, the FMMT415 transistor was implemented in the generator. The designed circuit was simulated with the transistors in avalanche breakdown mode, and the effects of various parameters on the output voltage were examined, particularly in the context of optimizing electrolysis performance. Based on the simulation results, the circuit was constructed and tested, and the differences in transistor parameters were evaluated. The simulation outcomes were then compared with the actual results. From these investigations, criteria were developed to determine the parameters that ensure suitable output voltage for Marx generator applications in hydrogen production. The optimal number of stages for the Marx generator was estimated based on the findings, highlighting its potential role in advancing sustainable hydrogen energy systems.