A high-voltage-gain DC-DC converter for powering a multi-mode monopropellant-electrospray propulsion system in satellites

This paper introduces a high-voltage-gain dc-dc converter designed to act as a power processing unit for a multi-mode monopropellant-electrospray propulsion system used in satellites. The high-voltage-gain converter is capable of offering a voltage gain ranging from 200 to 350. This converter is made up of two stages: 1). A two-phase interleaved boost stage on the input side and 2). A Cockcroft-Walton voltage multiplier on the output side. This converter is employed to boost a 15 V battery voltage to 3400 V required for operating the thruster in electrical mode. The theoretical analysis and design procedure of the converter is discussed in detail. Hardware test results supporting the converter operation and analysis are also provided.