Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Soft Switching Bridgeless PFC Buck Converters

  • Emrani, Amin (Dept. of Electrical and Computer Engineering, Isfahan University of Technology) ;
  • Mahdavi, Mohammad (Dept. of Electrical and Computer Engineering, Isfahan University of Technology) ;
  • Adib, Ehsan (Dept. of Electrical and Computer Engineering, Isfahan University of Technology)
  • Received : 2011.08.22
  • Published : 2012.03.20
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Abstract

Based on the standards that limit the harmonic pollution of electronic systems, the use of PFC converters is mandatory. In this paper, a new resonant bridgeless PFC converter is introduced. By eliminating the input bridge diodes, the efficiency is improved. Moreover, soft switching conditions for all of the semiconductor elements are achieved without adding any extra switches. As a result, high efficiency is attained. The proposed converter is analyzed and the theoretical and simulation results of the proposed converter are presented. In order to verify the validity of the analysis, a 40 w prototype converter is implemented and experimental results are presented. The experimental results show that high efficiency is attained while achieving a high power factor.

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References

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  1. New Bridgeless Buck PFC Converter with Improved Input Current and Power Factor vol.65, pp.10, 2018, https://doi.org/10.1109/TIE.2018.2801782