Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Design and Development of a High-Voltage Transformer-less Power Supply for Ozone Generators Based on a Voltage-fed Full Bridge Resonant Inverter

  • Amjad, Muhammad (Dept. of Energy Conversion, Faculty of Electrical Engineering, Universiti Teknologi Malaysia) ;
  • Salam, Zainal (Dept. of Energy Conversion, Faculty of Electrical Engineering, Universiti Teknologi Malaysia) ;
  • Facta, Mochammad (Dept. of Energy Conversion, Faculty of Electrical Engineering, Universiti Teknologi Malaysia) ;
  • Ishaque, Kashif (Dept. of Energy Conversion, Faculty of Electrical Engineering, Universiti Teknologi Malaysia)
  • Received : 2011.03.14
  • Published : 2012.05.20
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Abstract

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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References

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