System for experimental investigation of DBD excilamps in view of control and optimization of UV emission

Wiesner, Arnold; Díez, Rafael; Florez, David; Piquet, Hubert

doi:10.1016/j.matcom.2019.02.021

Cited by 3 publications

(1 citation statement)

References 29 publications

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“…Non-Thermal Plasma (NTP) are broadly used for applications such as ozone generation, treatment of surfaces, medical treatments, disinfection, and UV production [1][2][3][4][5][6]. In recent years, NTP has also become a rising technology for environmental protection.…”

Section: Introductionmentioning

confidence: 99%

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

2022

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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.

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Section: Introductionmentioning

confidence: 99%

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

2022

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Influence of the Bulb Geometry and Electrical Supply Parameters on the UV Emission of DBD Excimer Lamps

Wiesner,

Diez,

Piquet

2024

Plasma Chem Plasma Process

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The aim of this article is to improve the performance of DBD excimer lamps systems for UV production. Within this framework, our approach considers two distinct directions: the geometric dimensions of the double-barrier lamp bulb and the characteristics of the power supply. To explore these directions, a sampling of 19 bulbs of different geometries is considered, and a specially designed power supply is used, capable of controlling the shape (duration and magnitude) and frequency of current pulses injected into the plasma. A dedicated test bench, including a supervisory program that drives the power supply and collects system performance data, is used to perform parametric sweeps and guarantee measurement repeatability: the set of electrical parameters is fully explored for each lamp, and each experiment is characterized by UV emission performance and electrical generator operating conditions. Multiquadric response surfaces, used to format the results of this multi-variable exploration, reveal the most efficient directions for system optimization: increasing gas volume and, at a given operating frequency, providing the shortest possible current pulses with high amplitude can increase both UV emission and conversion efficiency.

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Impact of the Electrical Operating Point over a DBD Driven Plasma Jet

Florez¹,

Schitz²,

Piquet³

et al. 2019

2019 IEEE International Conference on Environment and Electrical Engineering and 2019 IEEE Industrial and Commercial Power Syst

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System for experimental investigation of DBD excilamps in view of control and optimization of UV emission

Abstract: System for experimental investigation of DBD excilamps in view of control and optimization of UV emission. (2019) Mathematics and Computers in Simulation, 165. 92-106.

Cited by 3 publications

References 29 publications

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

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

Influence of the Bulb Geometry and Electrical Supply Parameters on the UV Emission of DBD Excimer Lamps

Impact of the Electrical Operating Point over a DBD Driven Plasma Jet

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