Abstract
An inductive energy storage system pulsed power generator using semiconductor opening switch (SOS) diodes was employed to drive a co-axial cylinder plasma reactor for ozone synthesis with high yield. Fast recovery diodes were used as SOS diodes in the inductive energy storage system pulsed power generator to produce short-pulse high-voltage with high-repetition rate. The high-voltage pulse was applied to a 1 mm diameter center wire electrode in the reactor. The copper cylinder of 19 mm inner diameter was used as outer electrode and was connected to a ground. Oxygen and dry air were used as source gases and were injected into the plasma reactor with 2 L/min. gas flow rate. The synthesized ozone concentration increased in proportion to pulsed voltages repetition rate under oxygen gas condition. The ozone yield of about 230 g/kWh was obtained in oxygen gas and was independent of circuit parameter. The ozone yield decreased from 230 to 100 g/kWh by changing the source gas from oxygen to dry air. The ozone yield depended on circuit parameters such as capacitance of the primary energy storage capacitor and inductance of the secondary energy storage inductor under dry air condition.
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