Efficiency improvement of Piezoelectric-Transformer DC-DC Converter

Takashi Yamane, Sunao Hamamura, Toshiyuki Zaitsu, Tamotsu Ninomiya, Masahito Shoyama, Yoshiaki Fuda

Research output: Chapter in Book/Report/Conference proceedingConference contribution

41 Citations (Scopus)

Abstract

Piezoelectric-Transformers (PT) have a lot of merits in comparison with magnetic transformers. We have previously presented some types of Piezoelectric-Transformer DC-DC Converters (PT-converters) for AC-adapters, but their efficiency was restricted. The maximum efficiency was less than 80%. Furthermore, the frequency characteristics of efficiency is not good due to the power loss generated in the input filter circuit of the PT. In this paper, the improvement of the converter efficiency by using a different rectifier circuit topology and a synchronous-rectifier technique is described. Furthermore, the frequency characteristics of efficiency is improved by using a different topology of the input filter circuit and its optimum design. As a result, the converter efficiency has been increased up to 88% and the frequency characteristics of the efficiency is also improved.

Original languageEnglish
Title of host publicationPESC Record - IEEE Annual Power Electronics Specialists Conference
Editors Anon
Pages1255-1261
Number of pages7
Volume2
DOIs
Publication statusPublished - 1998
EventProceedings of the 1998 IEEE 29th Annual Power Electronics Specialists Conference, PESC. Part 2 (of 2) - Fukuoka, Jpn
Duration: May 18 1998May 21 1998

Other

OtherProceedings of the 1998 IEEE 29th Annual Power Electronics Specialists Conference, PESC. Part 2 (of 2)
CityFukuoka, Jpn
Period5/18/985/21/98

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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  • Cite this

    Yamane, T., Hamamura, S., Zaitsu, T., Ninomiya, T., Shoyama, M., & Fuda, Y. (1998). Efficiency improvement of Piezoelectric-Transformer DC-DC Converter. In Anon (Ed.), PESC Record - IEEE Annual Power Electronics Specialists Conference (Vol. 2, pp. 1255-1261) https://doi.org/10.1109/PESC.1998.703167