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Wireless power transfer system for radiative noise reduction with combined power supply and transmission coil

Research Project

Project/Area Number 19K14959
Research Category

Grant-in-Aid for Early-Career Scientists

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

Principal Investigator

Kusaka Keisuke  長岡技術科学大学, 工学研究科, 助教 (40826202)

Project Period (FY) 2019-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2019: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywordsワイヤレス給電 / 非接触給電 / 漏えい電磁界 / 伝送コイル / インバータ / CISPR / ICNIRP / EMC / 漏えい磁界 / 漏えい電界 / 電磁誘導 / マトリックスコンバータ
Outline of Research at the Start

ワイヤレス給電システムから生じる漏えい磁界は周辺の電子機器・通信回路の誤作動を招く恐れがある。そのため,各国の漏えい磁界基準値を満足するよう伝送コイルから生じる漏えい磁界の低減手法を検討してきた。しかし近年の研究により,伝送コイル起因の漏えい磁界のみならず,高周波電流が通じる電源ケーブル(高周波電源からコイルまで)からの漏えいも製品化に向けて無視できないことが知られ始めた。本研究ではコイル直下の高温下でも動作可能な高周波電源を開発し,伝送コイルと一体化する。これにより,漏えい磁界の発生源となる高周波電源ケーブル自体を除去することで,電磁環境への影響が小さいワイヤレス給電システムを実現する。

Outline of Final Research Achievements

In this project, a wireless power transfer (WPT) system for electric vehicles has been developed. The high-power WPT system emits a strong magnetic field owing to its operation principle from both the transmission coils and cables between a high-frequency power supply and the transmission coils. The magnetic field emission must be reduced because the magnetic field may interfere electrical equipment and radio communication nearby the system.
In order to solve the above problem, integration technology of the power supply and the transmission coils has been developed in this project. The magnetic field emission is reduced because a high-frequency current does not flow on the cable due to the integration.
The electromagnetic compatibility of the 22-kW prototype had been evaluated in a 10-m anechoic chamber in Nagaoka, Niigata. The measurement results show that the prototype fully satisfies the international guidelines (CISPR 11, Class A, Group 2).

Academic Significance and Societal Importance of the Research Achievements

漏えい電磁界は,システム周辺の電子機器や無線通信障害の原因となりうるため,電子機器の製品化にあたって遵守しなければならない国際的な基準が定められている。ワイヤレス給電システムは原理上漏えい電磁界の発生を妨げられないため,大電力化は困難とされていた。本研究の成果により,22kWワイヤレス給電システムにおいても,漏えい電磁界に関する国際的な基準を余裕をもって満足することが実証された。

Report

(3 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • Research Products

    (13 results)

All 2021 2020 2019

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (8 results) (of which Int'l Joint Research: 3 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] 漏洩磁界キャンセルコイルを用いたワイヤレス給電システムのキャンセルコイル短絡電流実効値補償に着目した漏えい磁界低減2021

    • Author(s)
      古川啓太, 日下佳祐, 伊東淳一
    • Journal Title

      電気学会論文誌D

      Volume: 141 Pages: 1-11

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Modeling of Coils for Wireless Power Transfer Systems with Reluctance Network Analysis2020

    • Author(s)
      古川 啓太, 日下 佳祐, 伊東 淳一
    • Journal Title

      IEEJ Transactions on Industry Applications

      Volume: 140 Issue: 10 Pages: 791-792

    • DOI

      10.1541/ieejias.140.791

    • NAID

      130007920868

    • ISSN
      0913-6339, 1348-8163
    • Year and Date
      2020-10-01
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] General Analytical Model of Inductance Variation by EMF-canceling Coil for Inductive Power Transfer System2019

    • Author(s)
      Keita Furukawa,Keisuke Kusaka,Jun-ichi Itoh
    • Journal Title

      IEEJ Journal of Industry Applications

      Volume: 8 Issue: 4 Pages: 660-668

    • DOI

      10.1541/ieejjia.8.660

    • NAID

      130007673086

    • ISSN
      2187-1094, 2187-1108
    • Year and Date
      2019-07-01
    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Comparative Verification of Radiation Noise Reduction Effect Using Spread Spectrum for Inductive Power Transfer System2019

    • Author(s)
      Keisuke Kusaka, Kent Inoue, Jun-ichi Itoh
    • Journal Title

      World Electric Vehicle Journal

      Volume: 10 Issue: 2 Pages: 1-12

    • DOI

      10.3390/wevj10020040

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 非接触給電システム向けフライングキャパシタ型線形増幅回路の電圧バランスの実機検証2021

    • Author(s)
      楠居琳太郎, 日下佳祐, 伊東淳一
    • Organizer
      令和3年電気学会全国大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 22kW三相12コイル非接触給電システムの漏えい電磁界評価2020

    • Author(s)
      日下佳祐, 楠居琳太郎, 伊東淳一, 司城徹, 尾林秀一, 石田正明
    • Organizer
      令和2年電気学会全国大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Three-Phase Wireless Power Supply System Using Matrix Converter2019

    • Author(s)
      J. Itoh, K. Yamanokuchi, S. Takuma, K. Kusaka
    • Organizer
      European Power Electronics Conference 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] A 22 kW-85 kHz Three-phase Wireless Power Transfer System with 12 coils2019

    • Author(s)
      K. Kusaka, R. Kusui, J. Itoh, D. Sato, S. Obayashi, M. Ishida
    • Organizer
      Energy Conversion Congress Exposition 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Design Method of Cooling Structure Considering Load Fluctuation of High-power Wireless Power Transfer System2019

    • Author(s)
      J. Itoh, M. Mizoguchi, L. H. Nam, K. Kusaka
    • Organizer
      IEEE INTERNATIONAL FUTURE ENERGY ELECTRONICS CONFERENCE IFEEC2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] マトリックスコンバータを用いた三相ワイヤレス給電システム2019

    • Author(s)
      山ノ口皓喜, 宅間春介, 日下佳祐, 伊東淳一
    • Organizer
      2019年電気学会産業応用部門大会
    • Related Report
      2019 Research-status Report
  • [Presentation] 三相12コイル非接触給電システムのコイル配置角度変更による小型化の検討2019

    • Author(s)
      楠居琳太郎, 古川啓太, 日下佳祐, 伊東淳一
    • Organizer
      電気関係学会北陸支部連合大会2019
    • Related Report
      2019 Research-status Report
  • [Presentation] 大容量ワイヤレス電力伝送システムの負荷変動を考慮した冷却器構造の設計法2019

    • Author(s)
      溝口洸輔, 日下佳祐, 伊東淳一
    • Organizer
      電気学会半導体電力変換研究会
    • Related Report
      2019 Research-status Report
  • [Patent(Industrial Property Rights)] 電子回路および無線電力伝送装置2019

    • Inventor(s)
      伊東淳一, 日下佳祐, 宅間春介, 山ノ口皓喜, 尾林秀一他1名
    • Industrial Property Rights Holder
      伊東淳一, 日下佳祐, 宅間春介, 山ノ口皓喜, 尾林秀一他1名
    • Industrial Property Rights Type
      特許
    • Filing Date
      2019
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2022-01-27  

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