Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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A Voltage-fed Single-stage PFC Full-bridge Converter with Asymmetric Phase-shifted Control for Battery Chargers

  • Qian, Qinsong (National ASIC System Engineering Research Center, Southeast University) ;
  • Sun, Weifeng (National ASIC System Engineering Research Center, Southeast University) ;
  • Zhang, Taizhi (National ASIC System Engineering Research Center, Southeast University) ;
  • Lu, Shengli (National ASIC System Engineering Research Center, Southeast University)
  • Received : 2016.06.04
  • Accepted : 2016.11.15
  • Published : 2017.01.20
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Abstract

A novel voltage-fed single-stage power factor correction (PFC) full-bridge converter based on asymmetric phase-shifted control for battery chargers is proposed in this paper. The attractive feature of the proposed converter is that it can operate in a wide output voltage range without an output low-frequency ripple, which is indispensable in battery charger applications. Meanwhile, the converter can maintain a high power factor and a controllable dc bus voltage over a wide output voltage range. In this paper, the realization of PFC and the operation principle of asymmetric phase-shifted control are given. A small-signal analysis of the proposed single-stage power factor correction (PFC) full-bridge converter is performed. Experimental results obtained from a 1kW experimental prototype are given to validate the feasibility of the proposed converter. The PF is higher than 0.97 over the entire output voltage range with the proposed control strategy.

Keywords

References

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