Self-Tuning High-Voltage and High-Frequency Sinusoidal Power Supply for Dielectric Barrier Discharge Plasma Generation

Abstract

In this paper a high-voltage sinusoidal power supply controlled by Arduino DUE micro-controller is described. This generator can feed a dielectric barrier discharge (DBD) load with sinusoidal voltages up to 20 kV peak and frequencies in the range 10–60 kHz, with a maximum output power of 200 W. Output voltage can be produced either in a continuous mode, or with on/off modulation cycles, according to treatment/application requirements. This power source is equipped with on-board diagnostics used to measure the output voltage and the charge delivered to the load. With a sample frequency of 500 kHz, Arduino DUE allows to evaluate both the high voltage and the average power feeding the discharge without the use of an expensive external measurement setup. Lissajous techniques are utilized to calculate discharge average power in a quasi-real-time manner. When a load is connected to high-voltage terminals, a self-tuning procedure is carried out to obtain the best working frequency. This parameter allows to minimize power-electronic component stress and to maximize generator efficiency.

Atmospheric‐pressure plasma actuators: Enhancement of the free charges' transport mechanism

“…The potential distribution and the resulting charge density had been determined in tests at the same room temperature (20°C) and humidity (45%) of the experiments of Ricchiuto et al and Neretti and Ricco. [ 23,24 ] The potential distribution values and extension increase by increasing the time for which the plasma is on. As a matter of fact, the incoming jet hits the surface after about 15–25 ms after the discharge ignition.…”

“…A sinusoidal supply system constituted by a push–pull HV transformer controlled by an Arduino has been utilized to feed the discharge. [ 24 ] It allows to change both voltage and frequency in the ranges 0–20 kVp and 15–50 kHz, respectively. In a previous work, our research group evaluated the amount of free charges transported by the Actuator 3 (annular geometry) supplied with a peak voltage of 6 kV and a frequency of 31 kHz.…”

“…Charge distribution has been obtained from surface potential measurements by means of the numerical approach described in Neretti and Ricco. [ 24 ] A plexiglass target was placed at a distance of 1 cm from the actuator end (in the x direction in Figure 2), perpendicularly to the actuator dielectric slab. When Actuator 3 was used, the dielectric surface was placed parallel to the target surface, at a distance of 1 cm, with the PSJA producing a jet hitting the target surface itself.…”

Validation of an indirect nonthermal plasma sterilization process for disposable medical devices packed in blisters and cartons

“…The power supply was driven using the duty cycle control strategy, alternatively supplying the discharge with ON/OFF cycles. [28] The duty cycle is defined as:…”

Effect of the controlled‐atmosphere helium plasma jet on chemical modification of glycated enzymatic protein

“…where q p is the stored charge in the capacitor, C p and V p are the capacitance and voltage of the capacitor, respectively, C r is the capacitance of the reactor, V(t) is the applied voltage, and f is the frequency of the applied voltage. [26] 2.2.2 Optical emission spectroscopy CAP applicability is generally based on the production capacity of adequate reactive species amounts. Therefore, optical emission spectroscopy (OES) (Ocean Optics HR 2000 spectrometer) is applied to investigate the presence and qualitative intensity of each species.…”