Pulsed corona driven by a compact repetitive Marx generator

Abstract

As a part of a pulsed corona system for pollution control applications, Marx type pulse generator was constructed and tested. It consists of ten capacitor banks which can be connected on different ways to give required voltage and energy and it is able to produce up to 200 kV and 15 J pulses with a respectable repetition rate. For this work we used three and four stages, 40-50 kV generator which gives 4 J per pulse and repetition rate up to 100 pps, according to our laboratory plasma reactor configuration. The generator delivers pulses to the wire-plate reactor with the 40 ns risetime and FWHM of 200 ns. The pulse power system may be used with or without DC bias, with no needs for additional power supply. This arrangement has been tested through the measurement of ozone generation. Finally, the whole system has been used for NO treatment in the laboratory conditions.