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Wireless Coupler Design Theory Establishment Exploiting Generalized kQ Criterion and Hamiltonian Algorithm

Research Project

Project/Area Number 17K06384
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Electron device/Electronic equipment
Research InstitutionToyohashi University of Technology

Principal Investigator

OHIRA Takashi  豊橋技術科学大学, 工学(系)研究科(研究院), 教授 (30395066)

Co-Investigator(Kenkyū-buntansha) 阿部 晋士  豊橋技術科学大学, 工学(系)研究科(研究院), 助手 (20847884)
坂井 尚貴  豊橋技術科学大学, 工学(系)研究科(研究院), 助教 (10736177)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2019: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2018: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000)
Fiscal Year 2017: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Keywordsワイヤレス電力伝送 / ワイヤレス結合器 / 最適化 / ハミルトニアンアルゴリズム / ワイヤレス結合kQ積 / ワイヤレス結合kQ積
Outline of Final Research Achievements

We have developed a Hamiltonian algorithm, which enables us to rapidly sweep the variable for parameter optimization in wireless coupler’s electrode dimensions, material characteristics (relative permittivity and dielectric loss tangent), and other multiple indexes. Using this result, we clarified which factor dominates the system performance in the electrode design process. In comparison to conventional algorithms currently used in other oversea and domestic organizations, the algorithm developed in this study is advantageous because we can explore the possible solution without resorting to random numbers while preventing the risk of falling into any local minimum or maximum. This outcome contributes to the accurate prediction of power transfer efficiencies of wireless power transfer systems.

Academic Significance and Societal Importance of the Research Achievements

ハミルトニアン演算により、高速パラメータスイープが実現できたことで電極寸法、材料特性(誘電率、誘電正接)など多変数から最適値を求められるようになった。これにより、電極設計の際に、どのパラメータがボトルネックになるかを明らかにしやすくなった。本提案方式は他の手法と比べて探索時間が短く、局所解に陥らない。加えて, 乱数を用いないため再現性があることから, 学術研究に適した方式と言える.
本研究により得られた理論により、初めてkQ積による最大効率試算値に損失を考慮できるようになった。これにより電力伝送効率の解析精度が大きく向上した。今後のワイヤレス給電システムの設計に与えるインパクトが大きい。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (13 results)

All 2019 2018 Other

All Journal Article (5 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 5 results,  Open Access: 1 results) Presentation (5 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results) Book (1 results) Remarks (2 results)

  • [Journal Article] 回路図で理解する複比保存則2019

    • Author(s)
      大平 孝
    • Journal Title

      電子情報通信学会誌

      Volume: vol.102, no.11 Pages: 1061-1064

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] スミスチャートの縮尺とポアンカレ距離2019

    • Author(s)
      大平 孝
    • Journal Title

      電子情報通信学会誌

      Volume: vol.102, no.4 Pages: 359-361

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 今更ながらkって何2019

    • Author(s)
      大平 孝
    • Journal Title

      電子情報通信学会誌

      Volume: 102 Pages: 79-82

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Power Transfer Theory on Linear Passive Two-Port Systems2018

    • Author(s)
      Takashi Ohira
    • Journal Title

      IEICE Transactions on Electronics

      Volume: E101.C Issue: 10 Pages: 719-726

    • DOI

      10.1587/transele.E101.C.719

    • NAID

      130007494788

    • ISSN
      0916-8524, 1745-1353
    • Year and Date
      2018-10-01
    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Power transfer efficiency formulation for reciprocal and non-reciprocal linear passive two-port systems2018

    • Author(s)
      Ohira Takashi
    • Journal Title

      IEICE Electronics Express

      Volume: 15 Issue: 3 Pages: 20171196-20171196

    • DOI

      10.1587/elex.15.20171196

    • NAID

      130006342191

    • ISSN
      1349-2543
    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Hamiltonian Approach to Electrode Shape Exploration of Strong Capacitive Couplers for Wireless Power Transfer2019

    • Author(s)
      Tsukasa YOSHIDA
    • Organizer
      2019 Asian Wireless Power Transfer Workshop
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 非相反素子を含む線形受動2ポート網における電力伝送効率のZパラメータ表現2018

    • Author(s)
      大平 孝
    • Organizer
      電気・電子情報通信関係学会東海支部連合大会
    • Related Report
      2018 Research-status Report
  • [Presentation] 基調講演:電界結合ワイヤレス電力伝送2018

    • Author(s)
      大平 孝
    • Organizer
      MWE2018
    • Related Report
      2018 Research-status Report
  • [Presentation] 一般化kQ積の理論とWPTへの応用2018

    • Author(s)
      大平 孝
    • Organizer
      CEATEC Japan 2018
    • Related Report
      2018 Research-status Report
  • [Presentation] ワイヤレス結合の一般化kQ積とポアンカレ距離2018

    • Author(s)
      大平 孝
    • Organizer
      自動車技術会2018年春季大会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Book] IET, Wireless Power Transfer: theory, technology, and applications2018

    • Author(s)
      Takashi Ohira
    • Total Pages
      296
    • Publisher
      The Institution of Engineering and Technoligy
    • ISBN
      9781785613463
    • Related Report
      2018 Research-status Report
  • [Remarks] 豊橋技術科学大学波動工学研究室

    • URL

      http://www.comm.ee.tut.ac.jp/we/ja/

    • Related Report
      2019 Annual Research Report
  • [Remarks] 豊橋技術科学大学波動工学研究室

    • URL

      http://www.comm.ee.tut.ac.jp/we/ja/ach_iframe.html

    • Related Report
      2017 Research-status Report

URL: 

Published: 2017-04-28   Modified: 2021-02-19  

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