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A Proposal of Novel Integrated On-board Converter for EVs with Dynamic Wireless Power Transfer System

Research Project

Project/Area Number 20K14723
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 21010:Power engineering-related
Research InstitutionTokyo University of Science

Principal Investigator

Ota Ryosuke  東京理科大学, 理工学部電気電子情報工学科, 助教 (60866193)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2020: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Keywordsワイヤレス給電 / 非接触給電 / 走行中給電 / マルチポートコンバータ / Wireless power transfer / Inductive power transfer / Dynamic charging / Multiport converter / ワイヤレス電力伝送 / 高効率化
Outline of Research at the Start

近年,EVの走行距離を飛躍的に伸ばす技術として,走行中ワイヤレス給電が注目されているが,電力変換効率が低い等の課題を抱え,実用化には至っていない。これは,これまで,EV側のワイヤレス給電システムとモータドライブシステムを統合する考え方がなく,ワイヤレス給電システムの搭載がスイッチングデバイス数と電力変換回数の大幅増加を招いていたためである。そこで本研究は,走行中給電システムとモータドライブシステムを統合する次世代車載システム用コンバータを提案・構築し,飛躍的な小型化及び高効率化を目指す。

Outline of Final Research Achievements

This study aims to integrate the existing onboard power electronics system in electric vehicles with a power electronics system for dynamic wireless power transfer. The goal is to achieve high power-conversion efficiency while minimizing system costs.
Throughout the research period, three novel circuit topologies were proposed, and their effectiveness was validated through experiments using their prototypes. Circuit topology 1 achieved a substantial increase in efficiency and cost reduction. Circuit topology 2 achieved significant improvements in efficiency and noise reduction. Lastly, circuit topology 3 allowed for cost reduction.

Academic Significance and Societal Importance of the Research Achievements

2050年のカーボンニュートラル化の達成に向け,電気自動車の普及が強く求められている。しかし,電気自動車は価格,走行距離,充電時間等に課題を抱え,劇的な普及には至っていない。これらの課題に対して,走行中ワイヤレス給電が注目を浴びているが,その実装には高効率化をはじめとする多くの課題を抱える。
本研究では,既存の車載システムとワイヤレス給電システムを機能統合する,新たなる3つの回路方式を提案し,高効率化と低コスト化を達成した。これらの成果は基礎検討段階のものであるが,今後,より実践的な検討を重ねることで,DWPTシステムの実現や電気自動車の普及に貢献することが期待できる。

Report

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

    (9 results)

All 2023 2022 2021

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (5 results) (of which Int'l Joint Research: 4 results,  Invited: 1 results) Patent(Industrial Property Rights) (2 results)

  • [Journal Article] Novel Soft-Switching Active-Bridge Converter for Bi-directional Inductive Power Transfer System2022

    • Author(s)
      Okada Ryohei、Ota Ryosuke、Hoshi Nobukazu
    • Journal Title

      IEEJ Journal of Industry Applications

      Volume: 11 Issue: 1 Pages: 97-107

    • DOI

      10.1541/ieejjia.21004206

    • NAID

      130008139361

    • ISSN
      2187-1094, 2187-1108
    • Year and Date
      2022-01-01
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] A Novel Soft-Switching Active-Bridge Converter for Bi-directional Inductive Power Transfer System2021

    • Author(s)
      Ryohei Okada, Ryosuke Ota, Nobukazu Hoshi
    • Journal Title

      IEEJ Journal of Industry Applications

      Volume: -

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Development of Integrated On-board Converter for Wireless Power Transfer2023

    • Author(s)
      Ryosuke Ota, Ryohei Okada, Nobukazu Hoshi
    • Organizer
      6th International Electric Vehicle Technology Conference 2023
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Soft-switching Converter for Inductive Power Transfer System with Double-sided LCC Resonant Network2022

    • Author(s)
      Ryohei Okada,Ryosuke Ota, Nobukazu Hoshi
    • Organizer
      The 24th European Conference on Power Electronics and Applications
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Multi-port Inductive Power Transfer System Considering Charging Auxiliary Battery in EVs2022

    • Author(s)
      Zhuoqi Zhang, Ryosuke Ota, Ryohei Okada, Nobukazu Hoshi
    • Organizer
      The 24th European Conference on Power Electronics and Applications
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 非接触給電用ソフトスイッチングアクティブブリッジコンバータの高効率化のための動作モード選択指針2022

    • Author(s)
      岡田涼平,太田涼介,星伸一
    • Organizer
      電子情報通信学会
    • Related Report
      2021 Research-status Report
  • [Presentation] Basic Study of Integrated On-board Converter for Dynamic WPT EV2021

    • Author(s)
      Ryosuke Ota, Nobukazu Hoshi
    • Organizer
      5th International Electric Vehicle Technology Conference
    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Patent(Industrial Property Rights)] マルチポートコンバータ及びコンバータシステム2021

    • Inventor(s)
      太田涼介,星伸一
    • Industrial Property Rights Holder
      太田涼介,星伸一
    • Industrial Property Rights Type
      特許
    • Filing Date
      2021
    • Related Report
      2021 Research-status Report
  • [Patent(Industrial Property Rights)] マルチポートコンバータ及びコンバータシステム2021

    • Inventor(s)
      太田 涼介,星 伸一
    • Industrial Property Rights Holder
      太田 涼介,星 伸一
    • Industrial Property Rights Type
      特許
    • Filing Date
      2021
    • Related Report
      2020 Research-status Report

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

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