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Creation of Fundamental Technology for Noise-Free Power Electronics

Research Project

Project/Area Number 20H02126
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 21010:Power engineering-related
Research InstitutionYokohama National University

Principal Investigator

Obara Hidemine  横浜国立大学, 大学院工学研究院, 准教授 (50772787)

Co-Investigator(Kenkyū-buntansha) 藤本 康孝  横浜国立大学, 大学院工学研究院, 教授 (60313475)
河村 篤男  横浜国立大学, 大学院工学研究院, 名誉教授 (80186139)
下野 誠通  横浜国立大学, 大学院工学研究院, 准教授 (90513292)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2022: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Fiscal Year 2021: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2020: ¥9,360,000 (Direct Cost: ¥7,200,000、Indirect Cost: ¥2,160,000)
Keywordsパワーエレクトロニクス / マルチレベルリニアアンプ / マルチレベルコンバータ / 電磁ノイズ / 高効率 / モジュラーカスケードリニアアンプ(MCLA) / フライングキャパシタリニアアンプ(FCLA) / ダイオードクランプリニアアンプ(DCLA) / マルチレベルインバータ / 効率 / 電力変換
Outline of Research at the Start

現在広く使用されているパワーエレクトロニクス機器は,パワー半導体デバイスのスイッチング動作を用いることで高効率な電力変換を実現している。一方,スイッチング動作の欠点として,原理的に電磁ノイズの発生が避けられず,しばしば電力変換器は「ノイズを撒き散らす箱」と認識されてしまっている。本研究では,高い変換効率を維持しつつ原理的に電磁ノイズを一切発生しない電力変換方式を提案,実証,技術体系化し,新しいノイズフリーのパワーエレクトロニクス分野を創生しようとするものである。そのコア技術は,パワー半導体デバイスの超マルチレベル化,線形動作化とその制御およびそれらの高密度実装である。

Outline of Final Research Achievements

This research aims to solve the problem of noise generated by power converters such as electromagnetic interference and harmonics with a fundamental approach rather than a symptomatic approach. The concept of a multi-level linear amplifier has been proposed as a new power conversion principle and circuits that achieve high efficiency and noise-free without switching operation of power semiconductor devices. Operation characteristics of three basic topologies and advanced topologies have been analyzed and summarized, and they were experimentally verified in laboratory prototypes. Furthermore, as an implementation method for a large number of power devices to achieve higher efficiency in the multilevel converters, a monolithic IC consisting of eight MOSFETs was designed and developed. A 5-level inverter using the prototype IC with eight MOSFETs has been experimentally verified.

Academic Significance and Societal Importance of the Research Achievements

高度な電力変換を行うインバータ等の電力変換装置は,現代の高度電力化社会に必要不可欠なものとして重要な役割を担っている。パワー半導体デバイスや回路技術の発展により,今や電力変換回路の効率は95%以上が当たり前となっているが,このような高効率化のためにはパワー半導体デバイスを高速にスイッチング動作させる必要があり,近年のSiCやGaNといった高速動作可能なデバイスの登場も相まって電磁ノイズの問題が顕在化している。本研究成果は,このような電磁ノイズの問題を根本的に解決し,周囲の機器への悪影響や大きなノイズフィルタに頼らない低コストの電力変換装置の実現に貢献することが期待される。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (9 results)

All 2023 2022 2021 Other

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (5 results) (of which Int'l Joint Research: 3 results) Remarks (1 results)

  • [Journal Article] Multilevel Cascaded H-Bridge Linear Amplifier with Unequal DC Capacitor Voltages Using a DC Voltage Source2022

    • Author(s)
      Setiadi Hadi、Obara Hidemine
    • Journal Title

      IEEJ Journal of Industry Applications

      Volume: 11 Issue: 3 Pages: 522-530

    • DOI

      10.1541/ieejjia.21011915

    • NAID

      130008145469

    • ISSN
      2187-1094, 2187-1108
    • Year and Date
      2022-05-01
    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Systematization of a Multilevel-Topology-Based Linear Amplifier Family for Noiseless DC?AC Power Conversion2021

    • Author(s)
      Obara Hidemine、Ohno Tatsuki、Kawamura Atsuo
    • Journal Title

      IEEE Access

      Volume: 9 Pages: 159627-159639

    • DOI

      10.1109/access.2021.3130681

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Flying-Capacitor Linear Amplifier With Capacitor Voltage Balancing for High-Efficiency and Low Distortion2021

    • Author(s)
      Obara Hidemine、Ohno Tatsuki、Katayama Masaya、Kawamura Atsuo
    • Journal Title

      IEEE Transactions on Industry Applications

      Volume: 57 Issue: 1 Pages: 614-627

    • DOI

      10.1109/tia.2020.3034560

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Development of a Monolithic Five-Level Flying Capacitor Converter with Extendability for the Number of Levels2023

    • Author(s)
      Hidemine Obara
    • Organizer
      International Conference on Power Electronics - ECCE Asia (ICPE 2023-ECCE Asia)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Efficiency Improvement of Flying-Capacitor Linear Amplifier by Unequal Capacitor Voltage Ratio2022

    • Author(s)
      Hidemine Obara and Keiichi Matsushima
    • Organizer
      International Power Electronics Conference 2022 (IPEC-Himeji 2022 -ECCE Asia-)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A Study on Flying Capacitor Linear Amplifier Configured by Only N-channel MOSFETs2021

    • Author(s)
      Hidemine Obara and Keiichi Matsushima
    • Organizer
      IEEE International Future Energy Electronics Conference (IFEEC 2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] フライングキャパシタ線形増幅回路における不均等なキャパシタ電圧比を用いた高効率化2021

    • Author(s)
      松島敬一, Hadi Setiadi, 小原秀嶺
    • Organizer
      電気学会半導体電力変換/モータドライブ合同研究会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Study on Advanced Modular Cascaded Linear Amplifier with Unequal Capacitor Voltages of H-bridge Cells2021

    • Author(s)
      Setiadi Hadi,小原秀嶺,河村篤男
    • Organizer
      電気学会,電力技術/電力系統技術/半導体電力変換合同研究会
    • Related Report
      2020 Annual Research Report
  • [Remarks] 横浜国立大学 小原研究室

    • URL

      https://obalab.ynu.ac.jp/

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report

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Published: 2020-04-28   Modified: 2024-01-30  

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