High-voltage pulsed-power supplies for automotive exhaust gas treatmentwith dielectric barrier reactor

摘要

One of the promising post-processingrnmethods to reduce the emission of soot in automotiverndiesel engines is based on the generation of pulsatingrnelectric discharges in the exhaust gas. For that purposerna system is needed that generates high voltage pulsesrnin the range 10 to 20kV at a repetition rate of 1-100rnkHz, which is fed from the next generation 42Vrnautomotive PowerNet bus. This paper concerns thernpower supply and an electrical circuit model of thernreactor. From the geometric dimensions, materials andrnmeasurements, an electric network model of the DBrnreactor is compiled. This model is required to be ablernto design a dedicated high-voltage pulsed powerrnsupply. The requirements for the power supply havernbeen investigated and suitable circuits topologies arernproposed. Experiments have been carried out with anrnexperimental pulsed power supply to verify the reactorrnmodel. The experiments show that the model can bernused for design purposes of the power supply.