Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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A New Zero Voltage Transition Bridgeless PFC with Reduced Conduction Losses

  • Mahdavi, Mohammad (Dept. of Electrical and Computer Eng., Isfahan University of Technology (IUT)) ;
  • Farzanehfard, Hosein (Dept. of Electrical and Computer Eng., Isfahan University of Technology (IUT))
  • Published : 2009.09.20
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Abstract

In this paper a new zero voltage transition PWM bridgeless PFC is introduced. The auxiliary circuit provides soft switching condition for all semiconductor devices. Also, in the resonant path of the auxiliary circuit, only two semiconductor devices exist. Therefore the resonant conduction losses are low. Furthermore, the auxiliary circuit semiconductor elements consist of only one diode and one switch. The proposed auxiliary circuit is applied to a bridgeless PFC converter to further reduce conduction and switching losses. In this paper, the operating modes of this converter are explained and the resulting ideal and simulation waveforms are shown. The presented experimental results justify the theoretical analysis.

Keywords

References

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