Research On The Characteristics Of The Special Power Supply For Atmospheric Pressure Gas Discharge

Atmospheric pressure gas discharge cold plasmas have bright prospects in the fields of material surface modification,etc,and the matching plasma excitation power supplies have also attracted much attention.At present,the plasma excitation power supplies usually use power-frequency alternating current as the power input and its volume is large,which does not match with the portable plasma generators and limits its application.With this as the background,this paper carried out the design,simulation,development and performance research of portable dielectric barrier discharge power supply.For the surface dielectric barrier discharge(SDBD)plasma generators,the characteristics of electrostatic field under different parameters are numerically simulated,and the effects of different parameters on the distribution of electric field intensity are studied.Based on this,the parameter range of portable power supply is proposed.A miniaturized and portable power supply for atmospheric pressure dielectric barrier discharge is designed.This power supply weights 200 g including inverter and boost module.The main circuit adopts quasi-resonant zero voltage switch(ZVS)double-tube self-excited circuit,and is designed with simulation software.The results show that when the input voltage is 3 to 12 V,an output voltage of 2 to 5 k V and an output frequency of20 to 30 k Hz can be obtained with a maximum power output of 60 W.The power-toweight ratio is 300 W/kg,which is higher than that of the commercialized power supplies.Through the design of power output parameters,combined with laminated SDBD plasma generator,floating-electrode dielectric barrier discharge(FE-DBD)flexible plasma generators based on PU(Polyurethane)and PDMS(Polydimethylsiloxane)materials,discharge experiments are conducted to analyze the emission spectra and discharge characteristics.The results show that the designed power supply can excite the air discharges to produce cold plasma and meet the requirements of atmospheric pressure air DBD.This provides a technical support for the portability of the power supply.Figure 48;Table 6;Reference 83...