This article presents an experimental study of a DBD-driven plasma jet system. The aim the is to design whole system (the reactor, its electrical power supply, and gas-feeding apparatus) suitable for biomedical applications. describes test bench developed this purpose discusses parameters it controls. measurements show that studied solutions can be used control critical such as temperature dimensions. best results were obtained bipolar short-pulse voltage supply in 10–20 kHz frequency range...

In this paper, three dc/dc ladder multilevel converters are compared. The first one is the classical topology and two other topologies presented based on one. A mathematical calculation of output resistance gain converter as a function number levels carried out for in order to estimate voltage drop due current. These calculations validated with simulations experimental results. Finally, behavior compared through tests. Results show higher performance ladder.

With the aim of providing a power supply for study dielectric barrier discharge (DBD) excimer lamps (excilamps), current-mode converter that allows an accurate adjustment electrical injected into one those is designed and implemented. Starting from model DBD lamps, convenience using to control lamp demonstrated. proposed converter, current supplied has trapezoidal almost-square shape controlled by means three parameters, namely, amplitude, duty cycle, frequency, which provides full power....

Selective Harmonics Elimination is a high-efficiency modulation method for multilevel inverters that allows handling very high voltage applications. It eliminates the most significant harmonics and fixes desired fundamental component. The main issue of these techniques complex process to obtain appropriate switching-angles, being necessary calculate them offline, meaning if some disturbances occur, system will not be compensated. This article proposes real-time selective harmonic elimination...

UV excimer lamps are efficient narrowband sources of radiation with applications in various domains. The issue controlling the emission by means power supply associated such favors pulsed current-controlled generators. After having established previous statements, we propose a dedicated converter topology which implements needed performances. analysis degrees freedom this structure shows capability to realize control both pulses' current energy and mean transferred lamp. Actual experimental...

A pulsed current-mode converter specifically designed for the supply of dielectric barrier discharge excimer lamps is proposed in this paper. The power structure defined on basis causality criteria that are justified by lamp model. operation studied, and its design established using state-plane analysis. This converter, operating discontinuous conduction mode, controls directly both amplitude duration emitted ultraviolet (UV) pulses. Experimentally, UV radiation demonstrated to be...

Dielectric barrier discharge (DBD) lamps, being capacitive loads, must be associated with bidirectional current sources for an appropriate control of the transferred power. Pulsed source supplies, which are known to offer very interesting performances, require specific power switches that able manage voltage and unidirectional at much higher frequencies (several hundreds kilohertz) than commercial thyristors. This paper proposes detailed design such a high-speed synthesized thyristor, using...

This paper proposes an efficient modeling and identification method for dielectric barrier discharge (DBD) systems, based on input–output (current–voltage) experimental measurements. The DBD is modeled using equivalent electric circuit associated with a differential equation that describes the dynamics of its conductance. assumes homogeneous behavior gas. introduces series polynomial terms current gas into conductance equation. These terms, after identification, are very useful tool to...

In Dielectric Barrier Discharges (DBDs), the control of power transfer, from low-voltage static converter to high voltage DBD, is strongly affected by parasitic capacitive effects step-up transformer. Minimizing these capacitances major importance and this paper aims establish validate analytical expressions in order predict values ratio, transformers, according different windings arrangements using cylindrical conductors. Afterward, experimental validations are performed on three...

Three different electrical generators have been designed and used to supply an exciplex dielectric barrier discharge lamp in order elucidate the influence of each one these supplying strategies over system performance; first method consists on with short bipolar voltage pulses; second third methods are based semiresonant converters were current pulses, controlled duration magnitude, injected into lamp. For generators, measurements efficiency, performed analyzed, at levels power (up 130 W)...

In the present study, decolourization efficiencies of LP-Hg lamp, XeCl and KrCl excilamps at same power density were compared for dyes in water by UV UV/H2O2 processes a batch reactor. Laboratory prototypes commercial lamp studied as sources. Methylene Blue Eliamine used model pollutants. The effect initial concentrations dye H2O2 TOC removal kinetic parameters also studied. ratio to electric consumption excilamp evaluated. As result, showed significantly higher than excilamp, but rate was...

This document reviews the current-mode supply approach for dielectric barrier discharge (DBD) excilamps. It briefly demonstrates why this mode assures control of power injected into DBD. Considerations with step-up transformer required correct operation are developed. shows and compares four different converter topologies that comply principle. comparison is made in terms electric efficiency luminous efficacy using experimental measurements.

Power estimation of a DBD device supplied by current source converter is studied in this article, pointing out the prominent contribution transformer parasitic elements. The impact stray capacitance and magnetizing inductance stated an iterative method that estimates electrical power waveforms presented. Results show can enhance without changing ratings must be minimized. Moreover, experimental results reveal need for better model to properly estimate power. In consequence, improved proposed...

This work presents a simple power converter, without any high voltage transformer, able to supply and control plasma jet based on dielectric barrier discharge. The operating in pulsed current mode, requires single switch is fed by low DC source. It can deliver very short duration pulses the with amplitude. principle explained means of state plane analysis validated simulations experimental results. equations provided allow for calculation during design stage important characteristics as peak...

This paper presents the study of a series-resonant inverter for supply dielectric barrier discharge excimer lamp. Causal analysis, based on fundamental properties load, is used to detail reasoning which has led this topology. In order effectively control lamp power, operating mode converter combines discontinuous current and soft commutation (zero-current switching), obtaining low electromagnetic emissions reduced switching losses as well. The model briefly presented, it allows simple state...

The framework of this paper is the study gas treatments (NOx abatement) by dielectric barrier discharge (DBD) at atmospheric pressure. To investigate impact various solutions for electrical energy injection on treatment process, two diagnostic methods are considered to evaluate discharging ratio reactor surface: an image processing method and a DBD equivalent circuit analysis, both presented in paper. For area first translated into gray levels, then segmented using Otsu’s order perform...

Based on causality analysis relying the capacitive nature of Dielectric Barrier Discharge (DBD) excimer lamps, a converter that allows variation electrical power injected to KrCl lamp is designed and implemented. This capable controlling current by means three degrees freedom (D.O.F.) square shape: amplitude, duty cycle frequency. It has been conceived for study UV radiation DBD lamps; consequently, measurements excilamp under different combinations these D.O.F., are presented analyzed.

A cascade multilevel inverter is designed and implemented with low-voltage transistors using gallium nitride technology. Experimental comparison against silicon technology performed, in terms of total harmonic distortion efficiency. This topology avoids direct series interconnection batteries, allowing the use lithium-ion without battery management system. The input converter consists four 48 V Li-ion batteries output single-phase 120 <sub xmlns:mml="http://www.w3.org/1998/Math/MathML"...

This paper presents the design of a current converter to supply DBD exciplex lamp. The structure is implemented, based on Boost converter. An analysis in state plane used, determine stability and values voltage during discharge phase. electrical model lamp used simulate non measurable variables: gas conductance. Finally, relationship between UV emission presented.

This article deals with the modulation and control of a trinary hybrid multilevel inverter (THMI), which is cascade converter that maximizes number levels per full-bridge. The presented defines duty cycle switches as piecewise functions desired output voltage, minimizing processing time. In order to this converter, it modeled linear system bounded disturbance. A quasi-sliding mode (QSMC) designed, simulated, experimentally verified for THMI operating in grid-tie obtaining better results when...

This paper presents an analysis of the consequences using a step-up transformer in supply dielectric barrier discharge (DBD) excimer lamp. A simplified model is used to analyze effects different parasitic elements operation current mode power supply. Mathematical expressions are found for each element and experimental validation performed. The design developed on basis lamp specifications two configurations tested experimentally, analyzing effect evidencing influence grounding terminal.

This article presents a variation of sliding mode control to supply current the grid from Trinary Hybrid Multilevel Inverter. In order design control, inverter is modeled as nonlinear system, and then it converted into linear model with disturbance. The proposed does not ensure stability in all region. However, unknown region tends zero. paper validates comparing switching circuit. Then, shows two tests performed on control: changing amplitude angle reference generating disturbance voltage...

This work presents the design, implementation and tests of an energy conversion system, formed by a Buck converter bidirectional DC-DC converter. The system is able to obtain maximum power from photovoltaic solar module, using MPPT algorithm. Besides, capable of, obtaining, storing delivering in isolated way or interconnected DC bus, as defined user. paper also simulation, well its experimental tests.

This article presents a decentralized control strategy for the balancing of cell voltages flying capacitor multilevel converter, implementing large number cells to address high conversion ratio. The originality this is that no reference required regulating leading an auto-balance capability. It composed several local cell-voltage controllers and global load-current regulator. For theoretical analysis purposes, change state variables proposed, new model converter. Then, study method performed...