• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Study on the wireless power transmission system for the railway vehicles using the high-temperature superconducting coils with thermal stability

Research Project

Project/Area Number 20K22414
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0302:Electrical and electronic engineering and related fields
Research InstitutionOkayama University

Principal Investigator

Inoue Ryota  岡山大学, 自然科学学域, 助教 (80881127)

Project Period (FY) 2020-09-11 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords非接触給電システム / 高温超電導コイル / 交流損失 / 熱的安定性 / 鉄道 / 冷却システム / 低損失化 / 保護 / 熱的安定化
Outline of Research at the Start

近年,温室効果ガスの削減と鉄道運転の安全性確保の観点から,鉄道用非接触給電システムのニーズが高まっている。しかし,非接触給電システムに銅コイルを用いた場合,コイルでの発熱から急速・大電力伝送が制限される欠点があった。そこで,申請者はこれまでに,高温超電導(HTS)コイルを用いた非接触給電システムを提案し,その有効性について実験と数値解析の両面から検討してきた。しかし,突発的にHTSコイルが焼損する問題があったため,本課題では,焼損の原因およびその対策方法を明確し,これまで実現できなかった熱的に安定な鉄道用非接触給電システムにおける基礎技術の確立を目指す。

Outline of Final Research Achievements

In order to design the WPT system using the HTS coil with thermal stability, we analyzed the frequency characteristics of the critical current in the HTS coil above 1 kHz using FEM analysis, and investigated the operating conditions considering thermal stability in the WPT system using HTS coil for the railway vehicles. As a result, we found that the thermally stable WPT system using the HTS coil for the railway vehicle capable of fast charging can be realized by operating current at the frequency of about 2 kHz. Also, the receiving power density of the WPT system for the railway vehicles was improved by the HTS coil structures using the narrow REBCO wires.

Academic Significance and Societal Importance of the Research Achievements

本研究課題では,kHz帯におけるHTSコイルの発熱と冷媒間の伝熱特性が非接触給電システムへ与える影響について検討した。その結果,1 kHz以上の高周波電流通電時におけるHTS線材の焼損原因が交流損失の増加に伴う臨界電流の低下であることを明らかにした点に学術的意義がある。また,本研究課題で提案したHTSコイル形状により,熱的に安定な高温超電導コイルを用いた非接触給電システムの基本設計が可能となるため,非接触給電技術の鉄道への適用拡大を促す点に社会的意義がある。

Report

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

    (7 results)

All 2022 2021 2020

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (5 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results)

  • [Journal Article] Study on Low-Loss and High-Energy Density Coil Structure of a Wireless Power Transmission System Using High Temperature Superconducting Coils for Railway Vehicle2022

    • Author(s)
      Inoue Ryota、Ueda Hiroshi、Kim Seokbeom
    • Journal Title

      IEEE Transactions on Applied Superconductivity

      Volume: - Issue: 6 Pages: 1-1

    • DOI

      10.1109/tasc.2022.3169997

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Thermal Characteristics of REBCO Coil in a Wireless Power Transmission System for the Railway Vehicle in Liquid Nitrogen2021

    • Author(s)
      Inoue Ryota、Ueda Hiroshi、Kim SeokBeom、Tsuda Makoto
    • Journal Title

      IEEE Transactions on Applied Superconductivity

      Volume: 31 Issue: 5 Pages: 1-5

    • DOI

      10.1109/tasc.2021.3059234

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 非接触給電システム用HTSコイルの高エネルギー密度化および低損失化のための基本構造に関する検討2021

    • Author(s)
      井上良太, 植田浩史, 金錫範
    • Organizer
      2021年度春季低温工学・超電導学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Study on Low Loss Coil Structure for High Energy Density of a Wireless Power Transmission System Using High Temperature Superconducting Coils for Railway Vehicle2021

    • Author(s)
      Ryota Inoue, Hiroshi Ueda, SeokBeom KIM
    • Organizer
      27th International Conference on Magnet Technology
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Fundamental research on development of 100 kW-class wireless power transmission system using high temperature superconducting coils2021

    • Author(s)
      Ryota Inoue, Hiroshi Ueda, SeokBeom KIM
    • Organizer
      34th International Symposium on Superconductivity
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Thermal Characteristics of REBCO Wire by kHz-class AC Current in Liquid Nitrogen for a Wireless Power Transmission System2020

    • Author(s)
      Ryota Inoue, Hiroshi Ueda, SeokBeom Kim, Makoto Tsuda
    • Organizer
      2020 Applied Superconductivity Conference
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] HTSコイルを用いた鉄道用非接触給電システムの熱的安定性を考慮した運転条件の検討2020

    • Author(s)
      井上 良太,植田 浩史,金 錫範,津田 理
    • Organizer
      2020年度秋季低温工学・超電導学会
    • Related Report
      2020 Research-status Report

URL: 

Published: 2020-09-29   Modified: 2023-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi