Power Estimation of a Current Supplied DBD Considering the Transformer Parasitic Elements

Rueda, Vanesa; Wiesner, Arnold; Díez, Rafael; Piquet, Hubert

doi:10.1109/tia.2019.2933519

Cited by 12 publications

(7 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The charge delivered to the reactor is measured through the measurement capacitor C m (see Figure 2). These quantities are used to estimate the average power absorbed by the reactor through Lissajous figures [22]. These quantities are used by the microcontroller unit (MCU) to adjust both the power supply input voltage and frequency.…”

Section: Power Supply Architecturementioning

confidence: 99%

Real Time Power Control in a High Voltage Power Supply for Dielectric Barrier Discharge Reactors: Implementation Strategy and Load Thermal Analysis

et al. 2022

View full text Add to dashboard Cite

Atmospheric-pressure plasma treatments for industrial and biomedical applications are often performed using Dielectric Barrier Discharge reactors. Dedicated power supplies are needed to provide the high voltage frequency waveforms to operate these nonlinear and time-dependent loads. Moreover, there is a growing technical need for reliable and reproducible treatments, which require the discharge parameters to be actively controlled. In this work, we illustrate a low-cost power supply topology based on a push–pull converter. We perform experimental measurements on two different reactor topologies (surface and volumetric), showing that open loop operation of the power supply leads to a temperature and average power increase over time. The temperature increases by ΔTvol~120 °C and ΔTsup~70 °C, while the power increases by ΔPvol~78% and ΔPsup~60% for the volumetric (40 s) and superficial reactors (120 s), respectively. We discuss how these changes are often unwanted in practical applications. A simplified circuital model of the power supply–reactor system is used to infer the physical relation between the observed reactor thermal behavior and its electrical characteristics. We then show a control strategy for the power supply voltage to ensure constant average power operation of the device based on real-time power measurements on the high voltage side of the power supply and an empirical expression relating the delivered power to the power supply output voltage. These are performed with an Arduino Due microcontroller unit, also used to control the power supply. In a controlled operation the measured power stays within 5% of the reference value for both configurations, reducing the temperature increments to ΔTvol~80 °C and ΔTsup~44 °C, respectively. The obtained results show that the proposed novel control strategy is capable of following the transient temperature behavior, achieving a constant average power operation and subsequently limiting the reactor thermal stress.

show abstract

Section: Power Supply Architecturementioning

confidence: 99%

Real Time Power Control in a High Voltage Power Supply for Dielectric Barrier Discharge Reactors: Implementation Strategy and Load Thermal Analysis

et al. 2022

View full text Add to dashboard Cite

show abstract

“…C d represents the capacitive behavior of the dielectric barrier(s), in this case the series equivalent capacitance of the two quartz cylinders. The gas is modeled as a dielectric (C g ) as long as it is not conductive (|v gas |< Vth, thus i gas = 0), and after breakdown it is represented with a constant voltage (v gas = ±Vth), the sign of which depends on the direction of the gas current [15,18,19]. The slopes of the parallelogram are used to define the dielectric and series equivalent capacitances (respectively, C d for the ON state and C eq for the OFF state-C eq being the value of the series connection of C d and C g ).…”

Section: Partial Surface Discharging Analysis Via the Electric Modelmentioning

confidence: 99%

“…A specific power supply has been also developed to create the plasma and to control the energy injected into the NTP. This one delivers square current waveforms (Figure 3a), which is generated by the power converter presented in [18,19]. This converter consists of a DC current source connected in cascade with a full-bridge current inverter and a step-up transformer.…”

mentioning

confidence: 99%

Combined Image Processing and Equivalent Circuit Approach for the Diagnostic of Atmospheric Pressure DBD

2022

Self Cite

View full text Add to dashboard Cite

The framework of this paper is the study of gas treatments (NOx abatement) by dielectric barrier discharge (DBD) at atmospheric pressure. To investigate the impact of various solutions for electrical energy injection on the treatment process, two diagnostic methods are considered to evaluate the discharging ratio on the reactor surface: an image processing method and a DBD equivalent circuit analysis, both presented in this paper. For the image analysis, the discharge area is first translated into gray levels, then segmented using the Otsu’s method in order to perform the discharging ratio diagnostic. The equivalent circuit approach, derived from the classical Manley’s diagram analysis, includes the behavior of the part of the reactor in which no discharge is happening. The identification of its parameters is used to estimate the discharging ratio, which evaluates the percentage of the reactor surface covered by the discharge. Experimental results with specifically developed power supplies are presented: they show a good agreement between the two methods. To allow a quantitative comparison of the discharge uniformity according to the operating conditions, the statistical analysis of gray level distribution is performed: non-uniform discharges with intense energy channels are shown to be clearly distinguished from more diffuse ones.

show abstract

“…The size and weight of the proposed power supply can be established as a benchmark to further miniaturize and optimize DBDPA power supplies. Rueda et al (2019) studied power estimation of a DBD device supplied by a current source converter, pointing out the prominent contribution of the transformer parasitic elements. Krishna et al (2020) introduce the power supply design of diode bridge rectifier, PWM (pulse width modulation) inverter and driving circuit.…”

Section: Introductionmentioning

confidence: 99%

A half-bridge IGBT drive and protection circuit in dielectric barrier discharge power supply

Wang

Lü

Chen

et al. 2021

View full text Add to dashboard Cite

Purpose This paper aims to improve the general circuit of driving and protection based on insulated gate bipolar transistor (IGBT) in dielectric barrier discharge power supply by designing a novel half-bridge inverter circuit with discrete components. Design/methodology/approach With one SG3524 chip, the structure based on discrete components is used to design the IGBT drive circuit. The driving waveform is isolated and sent out by photo-coupler 6N137. The protection circuit is realized by Hall sensor directly detecting the main circuit current, supplemented by a few components, including diodes, resistors, capacitors and triodes. It improves the reliability of the protection circuit. Findings In the driving circuit, the phase difference of signals from two channels are 180°. Moreover, when the duty cycle is set at 40%, it can ensure sufficient pulse width modulation response time. In the protection circuit, when over-current occurs, an intermittent output signal is automatically sent out. Furthermore, the over-current response time can be controlled independently. The peak voltage can be adjusted continuously from 0 to 30 kV with its frequency from 8 to 25 kHz and the power output up to 150 W. Originality/value The novel circuit of driving and protection makes not only its structure simpler and easier to be realized but also key parameters, such as frequency, the duty cycle and the driving voltage, continuously adjustable. Moreover, the power supply is suitable for other discharges such as corona discharge and jet discharge.

show abstract

Power Estimation of a Current Supplied DBD Considering the Transformer Parasitic Elements

Cited by 12 publications

References 27 publications

Real Time Power Control in a High Voltage Power Supply for Dielectric Barrier Discharge Reactors: Implementation Strategy and Load Thermal Analysis

Real Time Power Control in a High Voltage Power Supply for Dielectric Barrier Discharge Reactors: Implementation Strategy and Load Thermal Analysis

Combined Image Processing and Equivalent Circuit Approach for the Diagnostic of Atmospheric Pressure DBD

A half-bridge IGBT drive and protection circuit in dielectric barrier discharge power supply

Contact Info

Product

Resources

About