Energy Efficiency Evaluation of HV Power Supplies for Non-Thermal Plasma Generation

Non-thermal plasma (NTP) technologies play an important role in different applications such air and water pollutants treatment or biological applications. The energy efficiency of the NTP reactors strongly depends on the type of the power supplies used to generate the electrical discharges. This study presents the evaluation of the energy efficiency for two different High Voltage power supplies (HVP): first is 9 kV, 50 Hz high voltage AC transformer and the second one is a pulse HV supply with frequency and pulse width control. In order to compare the energy efficiency of the power supplies, the concentration of the hydrogen peroxide generated in DI water treated by non-thermal plasma was measured.