Three-phase Unidirectional Quasi-Single-Stage Delta-Switch Rectifier + DC-DC Buck Converter

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4 Citations (Scopus)


This work presents a unidirectional three-phase PFC rectifier well-suited for application targeting high efficiency and/or high power density, such as DC-type electric vehicle chargers. Herein, a quasi-single stage AC-DC converter is proposed where a conventional three-phase DELTA-switch voltage source rectifier is cascaded to a PWM interleaved buck-type DC-DC converter by means of a low energy storage DC-link. The characteristics of the presented power electronics, including the principles of operation, modulation strategy, suitable PWM control scheme, and dimensioning equations are described in this paper. The presented circuit is benchmarked against other solutions for a 50 kW power capability battery charger. The results show a superior power efficiency of the proposed system.
Original languageEnglish
Title of host publicationProceedings
Subtitle of host publicationIECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society
Number of pages6
ISBN (Electronic)978-1-7281-4878-6
Publication statusPublished - 2019
EventIECON 2019: IEEE 45th Annual Conference of the Industrial Electronics Society - Lisbon, Portugal
Duration: 14 Oct 201917 Oct 2019
Conference number: 45th

Publication series

NameIECON Proceedings (Industrial Electronics Conference)


ConferenceIECON 2019


  • Electric Vehicle
  • Fast Charger
  • PWM
  • Rectifier

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