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This paper reports the ongoing effort of the development of efficient, compact pulsed corona sources for pollution control applications. The systems comprise all-solid state 1-kW or 4-kW average-power nanosecond pulsers and a plasma reactor. The former is based on a one-stage magnetic compressor generating 1-5 J, 50-100-ns pulses across a reactor having an impedance of approximately 100 Omega, at...
This paper investigates the characteristics of forward conduction of high voltage fast recovery rectifiers at short duration high-current pulses. In these regimes, the devices' datasheets do not provide data on forward voltage drop. Four relevant HV fast recovery rectifiers are reported here: BYX104G, UX-FOB, 1N6519, DH 60-18A. For the experimental investigation, a low-inductive breadboard was assembled...
A technical overview of a European project on pulsed corona (PC) treatment of polluted streams is presented. Versatile high-power systems that are capable of cleaning both aqueous and gaseous streams in heterogeneous media, in either a corona above water reactor or an aerosol reactor, have been developed. Both reactors are capable of high-phenol removal yields from aqueous streams and increase the...
This paper reports the ongoing effort on development of efficient, compact pulsed corona sources for pollution control applications 1. The system comprises an all-solid state 2-kW average power (it can be doubled without change of size), compact (<130 kg) nanosecond pulser and a plasma reactor. The pulser makes use of magnetic compression techniques. One compression stage suffices for the forming...
A concept and implementations of an innovative HV capacitor charger system based on resonant modular converter are described. This system may function also as a DC power supply. The charger will be a part of a HV pulsed power supply in a corona discharge system for pollution control applications. The system comprises N identical modules fed in parallel and connected in series at their outputs. They...
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