Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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A New Unity Power Factor Rectifier System using an Active Waveshaping Technique

  • Choi, Se-Wan (Dept. of Control and Instrumentation Eng., Seoul National University of Technology) ;
  • Bae, Young-Sang (Dept. of Control and Instrumentation Eng., Seoul National University of Technology)
  • Published : 2009.03.20
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Abstract

This paper proposes a new three-phase diode rectifier system with a sinusoidal input current at unity power factor and a regulated and isolated output voltage at low level. The inherent natural wave-shaping capability of the reduced kVA polyphase transformer together with an active current wave-shaping technique results in a significant reduction of input and output filter requirements associated with switching ripple and EMI. The operation principles are described along with a design example and a comparative evaluation. Experimental results on a 1.5kW prototype are provided to validate the proposed concept.

Keywords

References

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