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Studies on Self-excited Oscillation of Traveling Wave Direct Energy Converter by Simulation Experiment

Research Project

Project/Area Number 18560277
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 電力工学・電気機器工学
Research InstitutionKobe University

Principal Investigator

TAKENO Hiromasa  Kobe University, Graduate School of Engineering, Associate Professor (90216929)

Co-Investigator(Kenkyū-buntansha) YASAKA Yasuyoshi  Kobe University, Graduate School of Engineering, Professor (30109037)
NAKAMOTO Satoshi  Kobe University, Graduate School of Engineering, Assistant (10198260)
Project Period (FY) 2006 – 2007
Project Status Completed (Fiscal Year 2007)
Budget Amount *help
¥3,830,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥330,000)
Fiscal Year 2007: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2006: ¥2,400,000 (Direct Cost: ¥2,400,000)
KeywordsHelium 3 Fusion / Direct Energy Conversion / TWDEC
Research Abstract

The research project treats self-oscillation of traveling wave direct energy converter (TWDEC), which is desirable for commercialization of electric power generation by nuclear fusion. The project aims at simulating work of self-excited oscillation of TWDEC, and experimental and numerical studies were performed.
In the experimental study, an external transmission circuit of decelerator of a TWDEC simulator was arranged by toroidal core and variable capacitor, and self-excited signals produced by modulated beam flowing were examined. Relative gain of the signal to modulation voltage was -75dB, which was lower than the previous experiments. To examine the difference, especially, evaluation of noise components, a dam for flowing beam to the decelerator was settled with keeping the RF environment the same. The signal was measured for various conditions in which the noise components were eliminated by estimating from those without beam flowing. The results revealed the existence of different working modes which was hard to control as it depended on plasma production. The improvement of plasma source is necessary.
As for numerical study, a numerical code constructed previously was extended to examine the work of TWDEC. One is supplement of works of external circuit, and the suitable results were obtained in the case of a simple linear transmission circuit. In the next, the spatial structure was extended into two dimension. This enabled to evaluate difference of electric field according to difference of geometry of electrodes, and collision of particle to the electrodes. The other extension is introduction of field due to charge of particles. In the results, however, huge field was performed at the entrance of the beam. This was because of insufficient model of calculation. As field due to charge of particles is essential for precise evaluation of self-excited oscillation, this point is planned to be improved.

Report

(3 results)
  • 2007 Annual Research Report   Final Research Report Summary
  • 2006 Annual Research Report
  • Research Products

    (21 results)

All 2008 2007 2006

All Journal Article (9 results) (of which Peer Reviewed: 4 results) Presentation (12 results)

  • [Journal Article] 先進燃料核融合における直接エネルギー変換の実験則の研究2008

    • Author(s)
      竹野裕正
    • Journal Title

      Journal of Plasma and Fusion Research Vol.84,No.2

      Pages: 117-120

    • NAID

      110006835273

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Studies of Scaling Law on Direct Energy Conversion for Advanced Fusion2008

    • Author(s)
      H. Takeno, Y. Yasaka, Y. Nakashima, T. Cho, Y. Tomita, M. Ishikawa
    • Journal Title

      Journal of Plasma and Fusion Research Vol. 84, No. 2

      Pages: 117-120

    • NAID

      110006835273

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] 先進燃料核融合における直接エネルギー変換の実験則の研究2008

    • Author(s)
      竹野裕正
    • Journal Title

      Journal of Plasma and Fusion Research Vol.84,NO.2

      Pages: 117-120

    • NAID

      110006835273

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Optization of Decelerator Structure of Traveling Wave Direct Energy Converter Simulator for D-^3He Fusion2007

    • Author(s)
      T. Yamamoto
    • Journal Title

      Transactions of Fusion Science and Technology Vol.51,No.2T

      Pages: 388-390

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Optimization of Decelerator Structure of Traveling Wave Direct Energy Converter Simulator for D^-3He Fusion2007

    • Author(s)
      T. Yamamoto, K. Takada, H. Takeno, Y. Yasaka
    • Journal Title

      Transactions of Fusion Science and Technology Vol. 51, No. 2T

      Pages: 388-390

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Optimization of Decelerator Structure of Traveling Wave Direct Energy Converter Simulator for D-^3He Fusion2007

    • Author(s)
      T.Yamamoto
    • Journal Title

      Transactions of Fusion Science and Technology Vol. 51(in Press)

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Deceleration Experiment on a Simulator of Traveling Wave Direct Energy Converter for D-^3He Fusion Reactor2006

    • Author(s)
      K. Sugihara
    • Journal Title

      Journal of the Korean Physical Society Vol.49I

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Deceleration Experiment on a Simulator of Traveling Wave Direct Energy Converter for D^-3He Fusion Reactor2006

    • Author(s)
      K. Sugihara, T. Yamamoto, H. Takeno, Y. Yasaka
    • Journal Title

      Journal of the Korean Physical Society Vol. 49I

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Analysis of Secondary Electrons in a Plasma Direct Converter Simulator for Advanced Fusion2006

    • Author(s)
      H.Takeno
    • Journal Title

      Proceedings of the XXIInd International Symposium on Discharges and Electrical Insulation in Vacuum VOL. 2

      Pages: 710-713

    • Related Report
      2006 Annual Research Report
  • [Presentation] 先進燃料核融合における直接エネルギー変換の実験則の研究2007

    • Author(s)
      竹野裕正
    • Organizer
      プラズマ・核融合学会第24回年会
    • Place of Presentation
      姫路
    • Year and Date
      2007-11-29
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Annual Research Report 2007 Final Research Report Summary
  • [Presentation] Studies of Scaling Law on Direct Energy Conversion for Advanced Fusion2007

    • Author(s)
      H, Takeno., Y, Yasaka., Y, Nakashima., T, Cho
    • Organizer
      24th JSPF Annual Meeting
    • Place of Presentation
      Himeji
    • Year and Date
      2007-11-29
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] 進行波型直接エネルギー変換器の動作過程のイオンビームエネルギー依存性に関する研究2007

    • Author(s)
      面屋大輔
    • Organizer
      平成19年電気関係学会関西支部連合大会
    • Place of Presentation
      神戸
    • Year and Date
      2007-11-18
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Annual Research Report 2007 Final Research Report Summary
  • [Presentation] Studies on Beam Energy Dependence of Working Process of Traveling Wave Direct Energy Converter2007

    • Author(s)
      D, Omoya., K, Takada., H, Takeno., Y, Yasaka
    • Organizer
      The 2007 Kansai-section Joint Convention of Institutes of Electrical Engineering, JAPAN
    • Place of Presentation
      Kobe
    • Year and Date
      2007-11-18
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Experiments and Numerical Analyses of Deceleration Process on a Traveling Wave Direct Energy Converter Simulator2007

    • Author(s)
      K. Takada
    • Organizer
      2007 Japan-Korea Joint Symposium on Electrical Discharge and High Voltage Engineering
    • Place of Presentation
      Tokyo
    • Year and Date
      2007-11-16
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Annual Research Report 2007 Final Research Report Summary
  • [Presentation] Experimental Study of Deceleration Process of Traveling Wave Direct Energy Converter for Advanced Fusion2007

    • Author(s)
      H. Takeno
    • Organizer
      8th International Symposium on Fusion Nuclear Technology
    • Place of Presentation
      Heidelberg
    • Year and Date
      2007-10-03
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Annual Research Report 2007 Final Research Report Summary
  • [Presentation] 進行波型直接エネルギー変換模擬実験装置におけるビーム減速実験2006

    • Author(s)
      竹野裕正
    • Organizer
      プラズマ・核融合学会第23回年会
    • Place of Presentation
      つくば
    • Year and Date
      2006-11-29
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Experiments of the Beam Deceleration on a Traveling Wave Direct Energy Converter Simulator2006

    • Author(s)
      H. Takeno, T. Yamamoto, K. Takada, Y. Yasaka
    • Organizer
      23rd JSPF Annual Meeting
    • Place of Presentation
      Tsukuba
    • Year and Date
      2006-11-29
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] 進行波型直接エネルギー変換器における減速器電極の最適配置2006

    • Author(s)
      高田幸佑
    • Organizer
      平成18年電気関係学会関西支部連合大会
    • Place of Presentation
      枚方
    • Year and Date
      2006-11-26
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Optimized Arrangement of Decelerator Electrodes on Traveling Wave Direr Energy Converter2006

    • Author(s)
      K. Takada, T. Yamamoto, H. Takeno, Y. Yasaka
    • Organizer
      The 2006 Kansai-section Joint Convention of Institutes of Electrical Engineering, JAPAN
    • Place of Presentation
      Hirakata
    • Year and Date
      2006-11-26
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Analysis of Secondary Electrons in a Plasma Direct Converter Simulator for Advanced Fusion2006

    • Author(s)
      H. Takeno
    • Organizer
      XXIInd International Symposium on Discharges and Electrical Insulation in Vacuum
    • Place of Presentation
      Matsue
    • Year and Date
      2006-09-28
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Analysis of Secondary Electrons in a Plasma Direct Converter Simulator for Advanced Fusion2006

    • Author(s)
      H. Takeno, T. Yamamoto, R. Kurumatani, T. Mori, Y. Yasaka
    • Organizer
      XXIInd International Symposium on Discharge and Electrical Insulation in Vacuum
    • Place of Presentation
      Matsue
    • Year and Date
      2006-09-28
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary

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Published: 2006-04-01   Modified: 2016-04-21  

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