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Development of a coilless AC-DC converter for hybrid IC form

Research Project

Project/Area Number 10650388
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 情報通信工学
Research InstitutionKumamoto National College of Technology

Principal Investigator

NAKAOKA Toshifumi  Kumamoto National College of Technology, Department of Electronics Engineering, Associate Professor, 電子工学科, 助教授 (00044701)

Co-Investigator(Kenkyū-buntansha) OOTA Ichirou  Kumamoto National College of Technology, Department of Information and Communication Engineering, Professor, 情報通信工学科, 教授 (60149995)
Project Period (FY) 1998 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 1999: ¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1998: ¥1,600,000 (Direct Cost: ¥1,600,000)
KeywordsIC implementation of power supply / AC-DC converter / Differential type / Switched-capacitor transformer / Small-size and light-weight / AC adopter / Switching power supplies / AC-DCコンバータ
Research Abstract

In the first research period, an AC-DC converter using two charge-transfer capacitors is realized which can convert a commercial power line (100 V / 60 Hz) into a DC voltage (50 V) with more than 80 % power conversion efficiency. The basic characteristics are obtained and simulated by a computer. In the second research period, the number of the charge-transfer capacitors is increased by 5. The test circuit does not contain any magnetic material and converts the commercial power line (100 V / 60 Hz) into a DC voltage (20 V).
Since the circuit configuration becomes complex, the test circuit is built using a computer-aided manufacturing system (Quick circuit) and the clocks are generated by a timing pulse generator (Time 98) to avoid malfunction by noise. By the experiments the excellent characteristics are obtained. Namely, the test circuit can convert the commercial power line (100 V / 60 Hz) into a DC voltage (20 V / 0.5 A) and the measured maximum power conversion efficiency is 89.5 %. The regulated output voltage is obtained even if the input voltage is changed widely from 20 V to 120 V.

Report

(3 results)
  • 1999 Annual Research Report   Final Research Report Summary
  • 1998 Annual Research Report

Research Products

(18 results)

All Other

All Publications (18 results)

  • [Publications] 原憲昭: "直列固定方式DC-DCコンバータにおける電圧平均化キャパシタの接続の順番と解析"第52回電気関係学会九州支部連合大会. 360-360 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Ikko Harada: "Multi-Output SC Type DC-DC Converter Using a Flexible Capacitor Ring Operation"The 21st International Telecommunications Energy Conference(INTELEC'99). 17-1-17-4 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 原憲昭: "リング形SC変成器の応用"第51回電気関係学会九州支部連合大会. 304-304 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 大田一郎: "直列固定方式スイッチトキャパシタ変成器の寄生インダクタンスの影響について"第51回電気関係学会九州支部連合大会. 305-305 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Fumio Ueno: "IC Implementation of switched-capacitor power supply and its output resistance"UCSB Workshop on Signal and Image Processing. 69-73 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] I.Oota, N.Hara, T.Nakaoka, and F.Ueno: ""A general method for deriving the output resistance of serial parallel type switched-capacitor power supplies""14-th Kumamoto Technical Report between Universities, Industry, and Administration, Kumamoto. 14512. (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Oota, N.Hara, T.Nakaoka, and F.Ueno: ""A simple method for deriving the output resistance of switched-capacitor transformers""52-th electrical scientific society proceeding in Kyusyu branch. 755. (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] N.Hara, Oota, T.Nakaoka, and F.Uenoe: ""Connecting sequence of an averaging capacitor in the serial fixed type DC-DC converter and its analysis""52-th electrical scientific society proceeding in Kyusyu branch. 754. (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] I.Harada, N.Hara, F.Ueno, and I.Oota: ""Multi-output SC type DC-DC converter using a flexible capacitor ring operation""The 21-st International Telecommunications Energy Conference (INTELEC'99) Copenhagen, Denmark. 17-1. (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] I.Oota, N.Hara, and F.Ueno: ""Influence of line parasitic inductance on switched-capacitor power supplies""12-th Circuits and Systems Karuizawa Workshop, Karuizawa. 247-252 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] I.Oota, N.Hara, T.Nakaoka, and F.Ueno: ""Influence of parasitic inductance of power line on switched-capacitor power supplies""13-th Kumamoto Technical Report between Universities, Industry, and Administration, Kumamoto. 13303. (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] F.Ueno and I.Oota: ""IC implementation of switched-capacitor power supply and its output resistance""UCSB Workshop on Signal and Image Processing, Santa Barbara, CA, USA. 69-73 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 原憲昭: "直列固定方式のDC-DCコンバータにおける電圧平均化キャパシタの接続の順番と解析"第52回電気関係学会九州支部連合大会. 360-360 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Ikko Harada: "Multi-Output SC Type DC-DC onverter Using a Flexible Capacitor Ring Operation"The 21st International Telecommunications Energy Conference (INTELEC'99). Vol. 1. 17・1-17・4 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 原憲昭: "リング形SC変成器の応用"第51回電気関係学会九州支部連合大会. 304-304 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 大田一郎: "新しい差動形スイッチトキャパシタ変成器について" 第50回電気関係学会九州支部連合大会. No.140. 40-40 (1997)

    • Related Report
      1998 Annual Research Report
  • [Publications] Ichiro Oota: "An AC-DC converter using a differential switched-capacitor transformer" The 1998 IEEE Power Electronics Specialists Conference. Vol.1. 763-769 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 大田一郎: "差動形スイッチトキャパシタ変成器を用いた新しいAC-DCコンバータ" 第11回 回路とシステム(軽井沢)ワークショップ. 263-268 (1998)

    • Related Report
      1998 Annual Research Report

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Published: 1998-03-31   Modified: 2016-04-21  

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