A Two-Phase Interleaved Single-Stage Isolated Boost-Half-Bridge AC-DC Converter using a Transformer with Flux Cancellation

  • Naradhipa, Adhistira M. (Seoul National University of Science and Technology) ;
  • Kang, Suhan (Seoul National University of Science and Technology) ;
  • Choi, Sewan (Seoul National University of Science and Technology)
  • 발행 : 2019.07.02

초록

This paper proposes a two-phase interleaved bridgeless single-stage ac-dc converter with magnetic integration that can achieve CCM power factor correction without input current sensing. All switches achieve ZVS turn-on and all diodes achieve ZCS turn-on for the whole grid cycle. SDAB-based modulation strategy is applied which results in simple power control and wide range output voltage. A flux cancellation method to integrate the interleaved transformer is firstly proposed in this paper to reduce the core size and loss. Experimental results on a 1.7-kW, 50kHz prototype are given to verify the principle and advantages of the proposed ac-dc converter.

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