• DocumentCode
    3678735
  • Title

    Efficiency study of coaxial contactless power transmission for electric railway

  • Author

    Kenta Moriki;Atsuo Kawamura;Tomoyuki Shimono;Takahiro Nozaki;Kunio Ikeda;Junichi Sato;Hitoshi Hayashiya;Hiroshi Yamamoto

  • Author_Institution
    DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING, YOKOHAMA NATIONAL UNIVERSITY, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa, 240-8501, Japan
  • fYear
    2015
  • Firstpage
    1
  • Lastpage
    10
  • Abstract
    A novel contactless power supply system for electric trains is discussed based on structure of an air gapped coaxial transformer. Theoretical analysis, simulation results and verification experiments were conducted and the results are shown in this paper. The 94.0% efficiency was observed with air gap coaxial structure. Moreover, the power factor corrector (PFC) circuit are introduced to increase sending power. However, the efficiency drops to 86.8% for the internal resistance (ESR) of inserted parallel capacitor Cp. In order to reduce the effect of ESR, parallelization of Cp are introduced. This method achieves power transmission efficiency of 88.0%.
  • Keywords
    "Magnetic hysteresis","Rail transportation","Coaxial cables","Transformer cores","Electronic mail"
  • Publisher
    ieee
  • Conference_Titel
    Power Electronics and Applications (EPE´15 ECCE-Europe), 2015 17th European Conference on
  • Type

    conf

  • DOI
    10.1109/EPE.2015.7309111
  • Filename
    7309111
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3678735