Constant voltage control of high voltage high frequency power supply for ozone quantity adjustment

Hothongkham, Prasopchok; Kinnares, Vijit

doi:10.1109/iscas.2009.5118178

Cited by 8 publications

(3 citation statements)

References 8 publications

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“…From the results, it can be deduced that the performance of the ozone generator (both in terms of lower initiation voltage and higher yield), is superior when operated at higher frequency. These observations are consistent with the findings from other researchers, for example [6, 27].…”

Section: Resultssupporting

confidence: 94%

Design and implementation of a high‐frequency LC‐based half‐bridge resonant converter for dielectric barrier discharge ozone generator

Amjad

Salam

2014

IET Power Electronics

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This study describes the design and implementation of a high-frequency resonant converter based on the transformerless half-bridge inverter topology. The transformer can be omitted because the voltage gain of the 'LC' tank circuit (without transformer) is sufficiently high to overcome the initiation voltage and to maintain steady ozone yield. Another important contribution of the work is the increase in operating frequencies, that is, up to 95 kHz. This increase has two main benefits: (i) smaller resonant component values (which lead to a smaller size of converter) and (ii) lower initiation voltage. To validate the theory, the high-frequency power converter is designed and tested on a dielectric barrier discharge chamber. It is shown that ozone yield is improved and the ozone formation starts at lower chamber voltages. The experimental and simulation results are found to be in close agreement and hence to validate the design procedures.

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Section: Resultssupporting

confidence: 94%

Design and implementation of a high‐frequency LC‐based half‐bridge resonant converter for dielectric barrier discharge ozone generator

Amjad

Salam

2014

IET Power Electronics

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“…In these circuits, the inductance is placed at the secondary of the transformer to stabilize the discharge. In [14]- [17], a full bridge inverter using a resonant inductor at the primary side is used to reduce the tuned resonant frequency. For both cases, the presence of the inductor increases the complexity of the circuit and reduces its efficiency.…”

Section: Introductionmentioning

confidence: 99%

Design and Development of a High-Voltage Transformer-less Power Supply for Ozone Generators Based on a Voltage-fed Full Bridge Resonant Inverter

Amjad¹,

Salam²,

Facta³

et al. 2012

Journal of Power Electronics

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It is known that transformer based power supplies for ozone generators have low efficiency, high cost and exhibits a limited frequency range of operation. To overcome these disadvantages, this paper proposes a high frequency ozone generator with the absence of a transformer. The voltage step-up is achieved only by utilizing the resonant tank. This is made possible by a novel combination of ozone chamber materials that allow ozone to be generated at only 1.5 ̶ 3.5 kV p-p . The input to the resonant tank is driven by a PWM full bridge resonant inverter. Furthermore, zero-current zero-voltage switching (ZCZVS) operation is achieved by employing a duty factor of 25% between the switches of the full bridge. The advantages of the proposed system include high efficiency, low cost and the ability to control ozone production by varying the input voltage to the inverter. The prototype is verified by both simulation and experimental results.

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“…Many converter topologies have been proposed in order to improve efficiency and reduce size [3,7]. One of those is based on the voltage source type IGBT resonant inverter [3][4][5][6][7][8][9][10][11][12]. This technique offers soft switching, reduced losses, and electro interference (EMI) / radio frequency interference (RFI).…”

Section: Introductionmentioning

confidence: 99%

Analysis and comparison study of PWM and Phase-Shifted PWM full-bridge inverter fed high-voltage High-Frequency Ozone Generator

Hothongkham

Kongkachat

Thodsaporn

2011

2011 IEEE Ninth International Conference on Power Electronics and Drive Systems

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This paper presents the analysis and the comparison study of a High-voltage High-frequency Ozone Generator using PWM and Phase-Shifted PWM full-bridge inverter as a power supply. The circuits operations of the inverters are fully described. In order to ensure that zero voltage switching (ZVS) mode always operated over a certain range of a frequency variation, a series-compensated resonant inductor is included. The comparison study are ozone quantity and output voltage that supplied by the PWM and Phase-Shifted PWM full-bridge inverter. The ozone generator fed by Phase-Shifted PWM fullbridge inverter, is capability of varying ozone gas production quantity by varying the frequency and phase shift angle of the converter whilst the applied voltage to the electrode is kept constant. However, the ozone generator fed by PWM full-bridge inverter, is capability of varying ozone gas production quantity by varying the frequency of the converter whilst the applied voltage to the electrode is decreased. As a consequence, the absolute ozone quantity affected by the frequency is possibly achieved.

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Constant voltage control of high voltage high frequency power supply for ozone quantity adjustment

Cited by 8 publications

References 8 publications

Design and implementation of a high‐frequency LC‐based half‐bridge resonant converter for dielectric barrier discharge ozone generator

Design and implementation of a high‐frequency LC‐based half‐bridge resonant converter for dielectric barrier discharge ozone generator

Design and Development of a High-Voltage Transformer-less Power Supply for Ozone Generators Based on a Voltage-fed Full Bridge Resonant Inverter

Analysis and comparison study of PWM and Phase-Shifted PWM full-bridge inverter fed high-voltage High-Frequency Ozone Generator

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