Analysis, Design, and Experimentation of a High-Voltage Power Supply for Ozone Generation Based on Current-Fed Parallel-Resonant Push–Pull Inverter

Alonso, J.M.; Garcia, J.; Calleja, A.J.; Ribas, J.; Cardesin, J.

doi:10.1109/tia.2005.853379

Cited by 85 publications

(32 citation statements)

References 14 publications

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“…The independent evaluation of inpackage ozone levels allows for comparison to extent of MB discolouration. DBD is generally recognized as one of the most efficient method to produce ozone [22]. In this study, concentration of ozone inside the package increased steadily with the duration of plasma discharge as shown in Fig.…”

Section: Ozone Measurementmentioning

confidence: 56%

Generation of In-Package Cold Plasma and Efficacy Assessment Using Methylene Blue

Misra¹,

Keener

Bourke³

et al. 2015

Plasma Chem Plasma Process

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In-package cold plasma processing is highly desirable in the food and biomedical industries as it allows for efficient sterilisation, and prevents against postpackaging contamination. The sensitivity of methylene blue dye to the reactive species generated from cold plasma is tested in this work for possible use as a marker of process efficacy. A large gap dielectric barrier discharge (DBD) operating in air was employed to generate the plasma discharge within the sealed package. The discolouration of methylene blue dye placed inside the package was studied as a function of DBD operation time, applied voltage and spatial position. Ozone concentrations were measured immediately after treatment as an indicator of one of the key meta-stables produced by the approach with values of up to 1800 ppm recorded. Visible absorption spectra and pH changes of the dye were measured. A decrease in peak absorbance of the dyes and pH was observed as a function of treatment time and ozone concentration. Optical emission spectroscopy of the discharge revealed the generation of excited nitrogen and reactive oxygen species. The results of kinetic modelling revealed that the dye discolouration can be used as a suitable marker reaction for treatment times within the order of 30 s.

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Section: Ozone Measurementmentioning

confidence: 56%

Generation of In-Package Cold Plasma and Efficacy Assessment Using Methylene Blue

Misra¹,

Keener

Bourke³

et al. 2015

Plasma Chem Plasma Process

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“…In these applications, the ozone is generated by installing a slit mica barrier between corona wires. This method allows producing non-thermal plasma, which is required to comply with safety requirements [5], [6].…”

Section: Introductionmentioning

confidence: 99%

On the employment of 1φ, voltage-source, switch-mode PWM, DC-AC converters for supplying dielectric barrier discharge devices

Saleh

Allen

Meng

et al. 2015

2015 IEEE Industry Applications Society Annual Meeting

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This paper presents the performance of a dielectric barrier discharge (DBD) device, when powered by a single phase, voltage source, 4-pulse, PWM inverter. The main focus of this paper is to investigate the applicability of switch-mode inverters in supplying DBD devices to generate plasma body forces. Also, this paper aims to establish relationships between the frequency of the inverter output voltage, switching frequency, and modulation index with the plasma-generated body force. A plate made of Plexiglas dielectric material, which has a relative permittivity of ≈ 3.2, is utilized in all experimental tests. Moreover, the test dielectric barrier discharge device is modeled using the linear high frequency model in order to demonstrate its applicability to simulate the responses of these devices. Test results show that the plasmagenerated body force has a direct dependence on the frequency of the inverter output voltage and modulation index, while it has a minor dependence on the switching frequency. Furthermore, test results show close matches between the experimental and simulation results that support the use of the linear high frequency model in designing, controlling, and operating inverters for supplying dielectric barrier discharge devices.Index Terms-Dielectric barrier discharge, Plasma-generated body force, and 1φ, 4-pulse, PWM, switch-mode DC-AC converters.

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“…These materials, by nature, are fragile, and hence, the chamber is constructed with a typical thickness between 1 and 4 mm. For 1-mm thickness, the initiation voltage (the voltage that is required to initiate ozone formation) is approximately 20 kV [6]. Consequently, with these materials, a high-voltage power supply is required.…”

Section: Introductionmentioning

confidence: 99%

“…Consequently, a significant ozone output can be achieved at a lower voltage. Among the high-frequency topologies, the resonant inverters are widely employed; these include full-bridge [13]- [15], push-pull [6], [16], and class E [17]- [19] resonant circuits. In majority of the cases, a high-frequency transformer is utilized to boost the voltage to a sufficiently high level to initiate ozone formation.…”

Section: Introductionmentioning

confidence: 99%

Analysis, Design, and Implementation of Multiple Parallel Ozone Chambers for High Flow Rate

Amjad

Salam

2014

IEEE Trans. Ind. Electron.

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It is well known that ozone concentration depends on air/oxygen input flow rate and power consumed by the ozone chamber. For every chamber, there exists a unique optimum flow rate that results in maximum ozone concentration. If the flow rate is increased (beyond) or decreased (below) from this optimum value, the ozone concentration drops. This paper proposes a technique whereby the concentration can be maintained even if the flow rate increases. The idea is to connect n number of ozone chambers in parallel, with each chamber designed to operate at its optimum point. Aside from delivering high ozone concentration at high flow rate, the proposed system requires only one power supply to drive all these (multiple) chambers simultaneously. In addition, due to its modularity, the system is very flexible, i.e., the number of chambers can be added or removed as demanded by the (output) ozone requirements. This paper outlines the chamber design using mica as dielectric and the determination of its parameters. To verify the concept, three chambers are connected in parallel and driven by a single transformer-less LCL resonant power supply. Moreover, a closed-loop feedback controller is implemented to ensure that the voltage gain remains at the designated value even if the number of chambers is changed or there is a variation in the components. It is shown that the flow rate can be increased linearly with the number of chambers while maintaining a constant ozone concentration.Index Terms-Dielectric barrier discharge (DBD), high-voltage power supply, ozone chamber, ozone concentration, resonant inverter.

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Analysis, Design, and Experimentation of a High-Voltage Power Supply for Ozone Generation Based on Current-Fed Parallel-Resonant Push–Pull Inverter

Cited by 85 publications

References 14 publications

Generation of In-Package Cold Plasma and Efficacy Assessment Using Methylene Blue

Generation of In-Package Cold Plasma and Efficacy Assessment Using Methylene Blue

On the employment of 1φ, voltage-source, switch-mode PWM, DC-AC converters for supplying dielectric barrier discharge devices

Analysis, Design, and Implementation of Multiple Parallel Ozone Chambers for High Flow Rate

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