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Novel Bidirectional Universal 1-Phase/3-Phase-Input Unity Power Factor Differential AC/DC Converter
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  • Héctor Sarnago,
  • Oscar Lucia,
  • Saransh Chhawchharia ,
  • David Menzi,
  • Johann W. Kolar
Héctor Sarnago
University of Zaragoza
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Oscar Lucia
Universidad de Zaragoza
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Saransh Chhawchharia
Power Electronic Systems Lab
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David Menzi
Power Electronic Systems Lab

Corresponding Author:[email protected]

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Johann W. Kolar
Power Electronic Systems Lab
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A common 400V dc bus for industrial motor drives advantageously allows the use of high-performance 600V power semiconductor technology in the inverter drive converter stages and to lower the rated power of the supplying rectifier system. Ideally, this supplying rectifier system features unity power factor operation, bidirectional power flow and nominal power operation in the three-phase and the single-phase grid. This paper introduces a novel bidirectional universal single-/three-phase-input unity power factor differential ac-dc converter suitable for the above mentioned requirements: The basic operating principle and conduction states of the proposed topology are derived and discussed in detail. Then, the main power component voltage and current stresses are determined and simulation results in PLECS are provided. The concept is verified by means of experimental measurements conducted in both three-phase and single-phase operation with a 6kW prototype system employing a switching frequency of 100 kHz and 1200V SiC power semiconductors.
03 May 2023Submitted to Electronics Letters
04 May 2023Assigned to Editor
04 May 2023Submission Checks Completed
01 Jun 2023Reviewer(s) Assigned
09 Jun 2023Review(s) Completed, Editorial Evaluation Pending
16 Jun 2023Editorial Decision: Accept