Indian Journal of Science and Technology

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Design of a Simple Inductor-less AC-AC Converter Realizing High Input Power Factor


Affiliations
1 Department of Information Electronics, Fukuoka Institute of Technology, Japan
2 Faculty of Engineering, King Mongkut’s Institute of Technology, Ladkrabang, Thailand
 

Switched capacitor (SC) techniques is used in order to design a simple inductor-less ac-ac converter with small size and high input power factor. Comparing conventional inductor-less ac-ac converters with the proposed converter, an input/ output (I/O) terminal is connected alternately to one of capacitors to achieve ac-ac conversion. To realize the new topology, the new designed converter is composed of two capacitors and four switches in the conversion ratios of 2 and 1/2. For this reason, as well as high input power factor, the proposed converter can achieve small size. To explain how the proposed converter is operated with the conversion ratios of 2 and 1/2, operation’s law, analysis in theory, and results of circuit simulation are written on this paper. The validity of the proposed converter is confirmed by circuit simulations using SPICE simulator.

Keywords

Direct AC-AC Converters, Power Converters, Switched Capacitor Techniques, Switching Mode Power Supply
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  • Design of a Simple Inductor-less AC-AC Converter Realizing High Input Power Factor

Abstract Views: 178  |  PDF Views: 0

Authors

Kei Eguchi
Department of Information Electronics, Fukuoka Institute of Technology, Japan
Wanglok Do
Department of Information Electronics, Fukuoka Institute of Technology, Japan
Kanji Abe
Department of Information Electronics, Fukuoka Institute of Technology, Japan
Krit Smerpitak
Faculty of Engineering, King Mongkut’s Institute of Technology, Ladkrabang, Thailand
Sawai Pongswatd
Faculty of Engineering, King Mongkut’s Institute of Technology, Ladkrabang, Thailand

Abstract


Switched capacitor (SC) techniques is used in order to design a simple inductor-less ac-ac converter with small size and high input power factor. Comparing conventional inductor-less ac-ac converters with the proposed converter, an input/ output (I/O) terminal is connected alternately to one of capacitors to achieve ac-ac conversion. To realize the new topology, the new designed converter is composed of two capacitors and four switches in the conversion ratios of 2 and 1/2. For this reason, as well as high input power factor, the proposed converter can achieve small size. To explain how the proposed converter is operated with the conversion ratios of 2 and 1/2, operation’s law, analysis in theory, and results of circuit simulation are written on this paper. The validity of the proposed converter is confirmed by circuit simulations using SPICE simulator.

Keywords


Direct AC-AC Converters, Power Converters, Switched Capacitor Techniques, Switching Mode Power Supply



DOI: https://doi.org/10.17485/ijst%2F2017%2Fv10i4%2F139724