A Novel Variant of Marx Generator Circuit Using Hybrid Energy Storage

Abstract

With the development of pulsed power technology and the expansion of its application areas, the requirements for pulsed high-voltage supplies are getting sophisticated. Many researchers are exploring new circuits or trying to improve the performance of the existing circuits. In this study, we introduce a variant circuit of the Marx generator based on hybrid energy storage (HES). This circuit topology, referred to as the LCL circuit in this article, allows two inductors and one capacitor to discharge simultaneously to obtain a higher output voltage. By observing the simulation results, we compared the performance of this proposed circuit with circuits based on other energy-storage methods, including capacitive energy storage (CES), inductive energy storage (IES), and the previously studied HES. After confirming the operation process of an LCL module, a two-stage experimental circuit has been built using power MOSFET switches for carrying out the verification experiments. With a charging voltage of 800 V, the output voltage of <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\sim$</tex-math> </inline-formula> 8.4 kV with a rise time of <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\sim$</tex-math> </inline-formula> 30 ns has been obtained on a 200- <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\Omega$</tex-math> </inline-formula> load. The voltage addition of two modules has indicated the potential of a Marx circuit for a much higher output voltage.