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Power converter suitable for very high-power applications

Research Project

Project/Area Number 06650318
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 電力工学・電気機器工学
Research InstitutionIBARAKI UNIVERSITY

Principal Investigator

OGUCHI Kuniomi  Ibaraki University, Professor, 工学部, 教授 (50037868)

Project Period (FY) 1994 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1995: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1994: ¥1,400,000 (Direct Cost: ¥1,400,000)
KeywordsPower converter / Multilevel voltage / High power / Harmonic distortion / 波形ひずみ率 / 相間リアクトル / 二重化
Research Abstract

A novel three-phase multilevel voltage converter has been proposed. The converter operates at low switching frequencies and produces 18-step voltages with the total harmonic distortion (T.H.D.) of 10.7%. The converter consists of a neutral-point-clamped (NPC) three-phase converter and an additional single-phase NPC converter. The main three-phase converter operates at a power line frequency, i.e.50 Hz or 60 Hz, and the additional Single-phase converter operates at three times the power line frequency, i.e.150 Hz or 180 Hz. A double converter system using the proposed converters generates 36-step voltages with T.H.D.of 5.1% and a quadruple system generates 72-step voltages with T.H.D.of 2.6%.
A simplified double converter system has been proposed, in which the two main converters share with one additional single-phase converter, i.e.one single-phase converter is omitted.
The theoretical and experimental results showed that the proposed converters have excellent performance and are suitable for very high-power applocations.

Report

(3 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • Research Products

    (11 results)

All Other

All Publications (11 results)

  • [Publications] 大口國臣: "Three-Phase Multilevel-Voltage Source Converters with Low Switching Frequencies and Less Distorted Input Voltages" IEEE Trans. on Industry Applications. 30. 1156-1165 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 大口國臣: "準36ステップ入力電圧波形をもつ二重化ダイオードブリッジ整流回路" 電気学会論文誌. 115-D. 172-173 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 大口國臣: "部分容量の非絶縁変圧器結合二重化ダイオードブリッジ整流回路の入力電流波形改善" 電気学会論文誌. 115-D. 1196-1197 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 大口國臣: "Novel 18-step Diode Rectifier circuit with Nonisolated Phase Shifting Transformers" IEE Proceedings Electric Power Applications. (投稿中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] K.Oguchi: "Three-phase mulitilevel-voltage source converters with low switching frequencies and less distorted input voltages" IEEE Trans. on Industry Applications. vol.30. 1156-1165 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] K.Oguchi: "Three-phase double diode-rectifier system with quasi 36-step input voltages" T.IEE Japan. vol.115-D. 172-173 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] K.Oguchi: "Improvement of input current waveforms of nonisolated-transformer-coupled double three-phase diode bridge rectifiers" T.IEE Japan. vol.115-D. 1196-1197 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] K.Oguchi: "Novel 18-step diode rectifier circuit with nonisolated phase shifting transformers" IEE Proceedings Electric Power Applications. (in contribution).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 大口國臣,山田卓志: "部分容量の非絶縁変圧器結合二重化三相ダイオードブリッジ整流回路の入力電流波形改善" 電気学会論文誌. 115-D. 1196-1197 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 大口 國臣: "Three-phase Multilevel-Voltage Source Converters with Low Switching Frequencies and Less Distorted Input Voltages" IEEE Trans.on Industry Applications. 30. 1156-1165 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 大口 國臣: "準36スッテプ入力電圧波形をもつ二重化三相ダイオードブリッジ整流回路" 電気学会論文誌D. 115. 172-173 (1995)

    • Related Report
      1994 Annual Research Report

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Published: 1994-04-01   Modified: 2016-04-21  

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