Design of an Inductor-less Direct AC-AC Converter Realizing 1/4x and 4x Conversion

Creative Commons License

Eguchi K., Asadi F., Kuwahara K., Oota I.

International Conference on Electronics, Communications and Control Engineering (ICECC), Male, Maldives, 6 - 08 March 2018, vol.1026 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 1026
  • Doi Number: 10.1088/1742-6596/1026/1/012012
  • City: Male
  • Country: Maldives
  • Kocaeli University Affiliated: Yes


In this paper, an inductor-less direct AC-AC converter realizing 1/4x and 4x conversion is designed by using switched-capacitor (SC) techniques. Unlike conventional SC AC-AC converters, the proposed AC-AC converter is synthesized with two converter blocks. By converting an AC input twice by these converter blocks, the 1/4x step-down / 4x step-up conversion is achieved by the proposed converter. The proposed converter has a simple circuit configuration, where each converter block consists of only four bidirectional switches and two capacitors. Hence, the proposed converter can realize smaller circuit components and higher input power factor than conventional converters. The effectiveness of the proposed converter was confirmed by simulation program with integrated circuit emphasis (SPICE) simulations and theoretical analysis. The SPICE simulation revealed that the proposed converter outperforms the conventional AC-AC converter using a flying capacitor.