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Soft Switching of Modified Half Bridge Fly-Back Converter

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Advances in Power Electronics and Instrumentation Engineering (PEIE 2011)

Part of the book series: Communications in Computer and Information Science ((CCIS,volume 148))

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Abstract

This paper presents soft switching of modified half bridge fly-back converter. The power switches in this converter are turned on at ZVS and the rectifier diode is turned on and off at ZCS. The auxiliary switch is turned off at ZCS. The voltage stress across the switch is equal to the supply voltage and soft switching is achieved for all the switching devices. Compared to half bridge fly-back converter, this modified circuit has improved efficiency. A 5V/2A prototype is implemented to verify the practical results.

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References

  1. Aqik, A., Cadirci, I.: Active clamped ZVS forward converter with soft-switched synchronous rectifier for high efficiency, low output voltage applications. lEEE Proc. EIectr. Power Appl. 150(2) (March 2003)

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  2. Gu, Y., Lu, Z.: A Novel ZVS Resonant Reset Dual Switch Forward DC-DC Converter. IEEE Transactions on Power Electronics 22(1) (January 2007)

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  3. Watson, R., Lee, F.C., Hua, G.C.: Utilization of an Active-Clamp Circuit to Achieve Soft Switching in Fly back Converters. IEEE Trans. on Power Electronics 11(1), 162–169 (1996)

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  4. Wu, L.-M., Pong, C.-Y.: A Half Bridge Fly back Converter with ZVS and ZCS Operations. In: 7th International Conference on Power Electronics (October 2007)

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Author information

Authors and Affiliations

  1. Dept. of Electrical and Electronics Engineering, MVJ College of Engineering, Bangalore, India

    Jini Jacob

  2. Dept. of Electrical Engineering, University Visvesvaraya College of Engineering, Bangalore, India

    V. Sathyanagakumar

Authors
  1. Jini Jacob
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  2. V. Sathyanagakumar
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Editor information

Editors and Affiliations

  1. Engineers Network, Trivandrum, Kerala, India

    Vinu V Das

  2. College of Engineering, Trivandrum, Kerala, India

    Nessy Thankachan

  3. Winona State University, Winona, MN, USA

    Narayan C. Debnath

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© 2011 Springer-Verlag Berlin Heidelberg

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Jacob, J., Sathyanagakumar, V. (2011). Soft Switching of Modified Half Bridge Fly-Back Converter. In: Das, V.V., Thankachan, N., Debnath, N.C. (eds) Advances in Power Electronics and Instrumentation Engineering. PEIE 2011. Communications in Computer and Information Science, vol 148. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-20499-9_4

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  • DOI: https://doi.org/10.1007/978-3-642-20499-9_4

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-20498-2

  • Online ISBN: 978-3-642-20499-9

  • eBook Packages: Computer ScienceComputer Science (R0)

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