Abstract
The Marx generator plays a vital role in a pulsed power system. In this paper, a modified compact bipolar output pulse solid-state Marx generator topology is developed. A three-stage prototype is designed and tested, in which pulse width, polarity, and peak voltage of the output pulse are made variable. It is possible to generate either positive or negative pulses with less rise time. Various components which affect the repetitive frequency of the developed Marx generator are evaluated. Analysis reveals that the total time period TO is a function of capacitor charging time. This is been validated experimentally by operating the Marx generator for different pulse repetition frequencies. The type of charging method solely controls the charging time of the capacitor and hence the repetition frequency.
Highlights
Pulse power technology is the discipline in which, the energy is accumulated over a period in a medium and is released into the load to generate a high voltage pulse instantaneously
We succeeded in building a simple Marx generator with optimum number of switching devices which can generate flexible output pulse with lowest rise time
Equations showing the repetitive frequency for the Marx generator were developed
Summary
Pulse power technology is the discipline in which, the energy is accumulated over a period in a medium and is released into the load to generate a high voltage pulse instantaneously. Authors in [3] proposed a compact monopolar pulsed power generator using solid-state devices widely used in Plasma Source Ion Implantation (PSII). In this topology, high return current flows through the DC source during the erection mode [3]. The major limitations of the topologies used for developing bipolar output pulse are the number of switches per stage. The authors proposed a high voltage solid-state bipolar rectangular pulse modulator having an H-bridge circuit across the load. A theoretical method is developed for the determination of the repetitive frequency of a solid- state bipolar output pulse Marx generator and it is validated from the modified topology. The influence of various elements on repetitive frequency is analysed and the key parameters are identified
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