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Development of load-independent single-input multiple-output wireless power transfer system with high frequency

Research Project

Project/Area Number 21K04029
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 21010:Power engineering-related
Research InstitutionChiba Institute of Technology

Principal Investigator

WEI XIUQIN  千葉工業大学, 工学部, 教授 (80632009)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2023: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2022: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2021: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Keywordsワイヤレス給電 / 負荷非依存モード / 高周波化 / 高効率化 / 定格出力 / ソフトスイッチング / フィードバック / 無線通信機構 / 高周波 / 高効率 / 定電圧モード / 負荷非依存 / 最適化 / 基礎理論 / 実機実装 / ワイヤレス給電システム / 負荷変動 / 高電力伝送効率 / 簡素化 / 小型化 / 位置ずれ / 一送電多受電 / 協調動作
Outline of Research at the Start

本研究では、負荷変動と位置ずれにロバストな一送電多受電ワイヤレス給電システムを開発することを目的とする。本研究のアイディアは負荷変動に依存せず、安定した出力電圧とソフトスイッチングを常に達成できる「負荷非依存モード」に光を当て、これをワイヤレス給電システム設計に応用することにある。まず、ワイヤレス給電システムに負荷非依存モードを適用するための設計理論を確立し、同モードを使いこなせるようにする。さらに、申請者がこれまでの研究で明らかにしてきた理論を組み込むことで、負荷変動、位置ずれによらない高電力伝送効率・定格出力を常に達成できるワイヤレス給電システムを設計し、実機実験でその妥当性を検証する。

Outline of Final Research Achievements

This study aims to develop a wireless power transfer (WPT) system with high frequency and high efficiency that remains robust against load variations and misalignment in a single-transmitter and multiple-receiver configuration. The focus of this study is to explore the load-independent mode, which was proposed 30 years ago but has not yet been fully investigated. This mode allows for stable output voltage and soft switching regardless of load variations. We aimed to apply this concept to the design of WPT systems. We established a design theory to apply the load-independent mode to WPT systems. Specifically, we designed a WPT system that can always achieve high power-transmission efficiency and rated output regardless of load variations or misalignment of transmitting and receiving coils, and we validated its feasibility and effectiveness through practical experiments.

Academic Significance and Societal Importance of the Research Achievements

近年、送受電器の設計により制御システムを簡素化する研究成果がほとんどである。これらの動向は、無線通信を伴う制御システムの構築がワイヤレス給電システムの開発のボトルネックとなっていることを示していた。これまでの研究は、いずれも負荷変動に対する検討にとどまっており、無線通信システムを不要とするワイヤレス給電システムを志向している研究は存在しなかった。本研究では、負荷変動や位置ずれに対応し、かつ、無線通信フィードバックを不要とする一対多ワイヤレス給電システムの開発に成功した。本研究により、ワイヤレス給電システムの設計が大幅に簡素化されることとなり、新たな実応用の創成、社会実装への展開が期待される。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (36 results)

All 2024 2023 2022 2021 Other

All Journal Article (5 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 5 results,  Open Access: 2 results) Presentation (30 results) (of which Int'l Joint Research: 14 results) Remarks (1 results)

  • [Journal Article] Load-Independent Class-E Frequency Multipliers2024

    • Author(s)
      Xie Yinchen、Zhu Wenqi、Komiyama Yutaro、Komanaka Ayano、Konishi Akihiro、Wei Xiuqin、Nguyen Kien、Sekiya Hiroo
    • Journal Title

      IEEE Transactions on Circuits and Systems I: Regular Papers

      Volume: Not yet Issue: 5 Pages: 1-14

    • DOI

      10.1109/tcsi.2024.3369649

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Analysis and Design of Class-Φ<sub>2</sub><sup>2</sup> Wireless Power Transfer System2023

    • Author(s)
      LUO Weisen、WEI Xiuqin、SEKIYA Hiroo
    • Journal Title

      IEICE Transactions on Communications

      Volume: E106.B Issue: 12 Pages: 1402-1410

    • DOI

      10.1587/transcom.2023EBP3044

    • ISSN
      0916-8516, 1745-1345
    • Year and Date
      2023-12-01
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Design of Isolated Class-Φ<sub>2</sub> DC-DC Converter Based on Harmonic Analysis Technology2022

    • Author(s)
      Kentaro Nakayama, Tomoyuki Tamura, Xiuqin Wei, Nobuo Satoh
    • Journal Title

      IEEJ Transactions on Industry Applications

      Volume: 142 Issue: 3 Pages: 177-186

    • DOI

      10.1541/ieejias.142.177

    • NAID

      130008165823

    • ISSN
      0913-6339, 1348-8163
    • Year and Date
      2022-03-01
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Load‐independent inverse class‐E ZVS inverter and its application to wireless power transfer systems2022

    • Author(s)
      Komanaka Ayano、Zhu Wenqi、Wei Xiuqin、Nguyen Kien、Sekiya Hiroo
    • Journal Title

      IET Power Electronics

      Volume: 15 Issue: 7 Pages: 644-658

    • DOI

      10.1049/pel2.12256

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Generalized Analysis of Load-Independent ZCS Parallel-Resonant Inverter2021

    • Author(s)
      Komanaka Ayano、Zhu Wenqi、Wei Xiuqin、Nguyen Kien、Sekiya Hiroo
    • Journal Title

      IEEE Transactions on Industrial Electronics

      Volume: In press Issue: 1 Pages: 1-1

    • DOI

      10.1109/tie.2021.3053888

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Study of load-independent class-ED converter2024

    • Author(s)
      Soraki Aizawa, Tsukasa Yasuda, Azuma Uchida, Weisen Luo, and Xiuqin Wei
    • Organizer
      2024 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing(NCSP’24)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Resonant converter with class-E^-1 inverter with constant voltage2024

    • Author(s)
      Ayano Komanaka, Wenqi Zhu, Xiuqin Wei, Kien Nguyen, and Hiroo Sekiya
    • Organizer
      2024 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing(NCSP’24)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Load-independent high-frequency WPT system for multiple receivers with single transmitter2023

    • Author(s)
      Hanxiao Wang, Yutaro Komiyama, Xiuqin Wei, Akihiro Konishi, Kien Nguyen, and Hiroo Sekiya
    • Organizer
      The 49th Annual Conference of the IEEE Industrial Electronics Society (IECON 2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Reconfigurable class-E/EF load-independent inverter with CC-CV output2023

    • Author(s)
      Wenqi Zhu, Ayano Komanaka, Yutaro Komiyama, Xiuqin Wei, Kien Nguyen, and Hiroo Sekiya
    • Organizer
      2023 IEEE Energy Conversion Congress and Exposition (ECCE)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Design of a high-efficiency 13.56 MHz multi-coil wireless power transfer system2023

    • Author(s)
      Yota Matsui, Weisen Luo, Keijiro Senzaki, and Xiuqin Wei
    • Organizer
      2023 IEEE Energy Conversion Congress and Exposition (ECCE)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Load-independent class-E inverter with a class-D rectifier2023

    • Author(s)
      Soraki Aizawa, Tsukasa Yasuda, Azuma Uchida, Weisen Luo, and Xiuqin Wei
    • Organizer
      2023 12th International Conference on Renewable Energy Research and Applications (ICRERA)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Design of high-frequency CC/CV output load-independent WPT system2023

    • Author(s)
      Jiaxin Yan, Wenqi Zhu, Akihiro Konishi,Xiuqin Wei, Kien Nguyen, and Hiroo Sekiya
    • Organizer
      2023 12th International Conference on Renewable Energy Research and Applications (ICRERA)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Load-independent multiple output WPT system with fixed coupling coils2023

    • Author(s)
      Akihiro Konishi, Ken Onodera, Yutaro Komiyama, Xiuqin Wei, Kien Nguyen, Hiroo Sekiya
    • Organizer
      The 20th International SoC Conference (ISOCC 2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Self-tuned series resonant power oscillator with load-independent operation2023

    • Author(s)
      Yutaro Komiyama, Wenqi Zhu, Ayano Komanaka, Xiuqin Wei, Nguyen Kien, and Hiroo Sekiya
    • Organizer
      2023 IEEE International Symposium on Circuits and Systems (ISCAS)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 負荷非依存E/F級インバータを用いた多受電無線電力伝送システム2023

    • Author(s)
      王寒簫, 小宮山裕太郎, 魏秀欽, 小西晃央, グエンキエン, 関屋大雄
    • Organizer
      電子情報通信学会電子通信エネルギー技術研究会
    • Related Report
      2023 Annual Research Report
  • [Presentation] CC/CV出力負荷非依存高周波WPTシステムの設計2023

    • Author(s)
      厳佳欣, 朱聞起, 小宮山裕太郎, 小西晃央, 魏秀欽, グエンキエン, 関屋大雄
    • Organizer
      電子情報通信学会電子通信エネルギー技術研究会
    • Related Report
      2023 Annual Research Report
  • [Presentation] EF^2級WPTシステムの解析2023

    • Author(s)
      伊原侑我, 黒澤洋史, 武藤雅希, 魏秀欽
    • Organizer
      電気学会半導体電力変換研究会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 負荷非依存ED級コンバータに関する検討2023

    • Author(s)
      相澤宙輝, 内田東, 羅イ森, 魏秀欽
    • Organizer
      電気学会半導体電力変換研究会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 負荷非依存モードを搭載したEF級インバータ2023

    • Author(s)
      羅イ森, 安田司, 内田東, 魏秀欽
    • Organizer
      電気学会半導体電力変換研究会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 負荷変動及び位置ずれに対してロバストな 6.78MHz 一送電多受電無線電力転送システム2023

    • Author(s)
      王寒簫, 小宮山裕太郎, 魏秀欽, グエンキエン, 関屋大雄
    • Organizer
      NOLTAソサイエティ大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Design of load-independent class-EF inverter with nonsinusoidal output current2023

    • Author(s)
      Yutaro Komiyama, Wenqi Zhu, Xiuqin Wei, Kien Nguyen, and Hiroo Sekiya
    • Organizer
      2023 International Workshop on Nonlinear Circuits, Communications and Signal Processing (NCSP'23)
    • Related Report
      2022 Research-status Report
  • [Presentation] Design of load-independent class-EF inverter with nonsinusoidal output current2023

    • Author(s)
      Aoi Noda, Yota Matui, Weisen Luo, and Xiuqin Wei
    • Organizer
      2023 International Workshop on Nonlinear Circuits, Communications and Signal Processing (NCSP'23)
    • Related Report
      2022 Research-status Report
  • [Presentation] Power losses and efficiency of class-E-D WPT system at any output voltage2023

    • Author(s)
      Takuya Iwami, Hiroki Kagawa, and Xiuqin Wei
    • Organizer
      2023 International Workshop on Nonlinear Circuits, Communications and Signal Processing (NCSP'23)
    • Related Report
      2022 Research-status Report
  • [Presentation] An easy-to-use design approach of class-E-D WPT system2023

    • Author(s)
      Hiroki Kagawa, Takuya Iwami, Yota Matui, and Xiuqin Wei
    • Organizer
      2023 International Workshop on Nonlinear Circuits, Communications and Signal Processing (NCSP'23)
    • Related Report
      2022 Research-status Report
  • [Presentation] Design of class-EF^2 WPT system with relay coil2022

    • Author(s)
      Yota Matsui, Kisara Nakajima, Weisen Luo, and Xiuqin Wei
    • Organizer
      19th International SoC Design Conference (ISOCC 2022)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] eGaNを用いたE級インバータの設計2022

    • Author(s)
      町澤改, 中島樹咲果, 羅イ森, 魏秀欽
    • Organizer
      電気学会半導体電力変換研究会 (SPC)
    • Related Report
      2022 Research-status Report
  • [Presentation] MOSFETのドレイン-ソースとゲート-ドレイン間の非線形寄生容量を考慮したEF_2級発振器の設計2022

    • Author(s)
      内田東, 中島樹咲果, 羅イ森, 魏秀欽
    • Organizer
      電気学会半導体電力変換研究会 (SPC)
    • Related Report
      2022 Research-status Report
  • [Presentation] Design of a 27.12 MHz class-E inverter using an eGaN FET2022

    • Author(s)
      Kai Machizawa, Kazuki Tanaka, Kisara Nakajima, Weisen Luo, and Xiuqin Wei
    • Organizer
      2022 International Workshop on Nonlinear Circuits, Communications and Signal Processing (NCSP'22)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Design of class-EF_2 oscillator with nonlinearities of MOSFET drain-to-source and gate-to-drain parasitic capacitances2022

    • Author(s)
      Azuma Uchida, Kisara Nakajima, Weisen Luo, and Xiuqin Wei
    • Organizer
      022 International Workshop on Nonlinear Circuits, Communications and Signal Processing (NCSP'22)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Design of class-Φ^2 wireless power transfer system2022

    • Author(s)
      Kisara Nakajima, Yusuke Hagiwara, Weisen Luo, and Xiuqin Wei
    • Organizer
      2022 International Workshop on Nonlinear Circuits, Communications and Signal Processing (NCSP'22)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Load Independent Class-E^-1 Inverter with Shunt Capacitance2021

    • Author(s)
      Ayano Komanaka, Wenqi Zhu, Kien Nguyen, Hiroo Sekiya, and Xiuqin Wei
    • Organizer
      The 30th International Symposium on Industrial Electronics(ISIE2021)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] EF_2級インバータを用いたE^2級WPTシステムの解析2021

    • Author(s)
      萩原佑亮, 中島樹咲果, 羅イ森, 魏秀欽
    • Organizer
      電気学会半導体電力変換研究会 (SPC)
    • Related Report
      2021 Research-status Report
  • [Presentation] EF^2級コンバータを用いたワイヤレス給電システム2021

    • Author(s)
      中島樹咲果, 萩原佑亮, 羅イ森, 魏秀欽
    • Organizer
      電気学会半導体電力変換研究会 (SPC)
    • Related Report
      2021 Research-status Report
  • [Presentation] Φ^2級ワイヤレス給電システムの解析設計手法2021

    • Author(s)
      羅イ森, 中島樹咲果, 萩原佑亮, 魏秀欽
    • Organizer
      電気学会半導体電力変換研究会 (SPC)
    • Related Report
      2021 Research-status Report
  • [Presentation] 負荷非依存ZVS並列共振インバータの解析と設計2021

    • Author(s)
      駒中綾乃, 朱聞起, 魏秀欽, グエンキエン, 関屋大雄
    • Organizer
      電気学会半導体電力変換研究会 (SPC)
    • Related Report
      2021 Research-status Report
  • [Remarks]

    • URL

      https://www.eee.it-chiba.ac.jp/staff/wei.html

    • Related Report
      2023 Annual Research Report

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Published: 2021-04-28   Modified: 2025-01-30  

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