An isolated high-voltage high-frequency pulsed power converter for non-thermal plasma ozone generation

An isolated high-voltage high-frequency pulsed power converter for non-thermal plasma ozone generation is proposed in this paper. With an input of 500 VDC, the output pulsed voltage can reach -12 kV through the inductor-capacitor resonance together with a step-up transformer. The pulse duration is designed as 1.66 μs. An anti-series connected switch pair at the input terminal enables the energy stored in the passive component to be recovered and transferred back to the DC source which results in great energy saving. A hardware prototype with 500 VDC input and -12 kV pulsed voltage output has been developed. The pulse generating frequency can go up to 15 kHz. Both the simulation and experimental results are presented to validate the proposed pulsed power converter and its operating principle.