Efficiency study of coaxial contactless power transmission for electric railway

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

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 %.

Original languageEnglish
Title of host publication2015 17th European Conference on Power Electronics and Applications, EPE-ECCE Europe 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)9789075815221
DOIs
Publication statusPublished - 2015 Oct 27
Event17th European Conference on Power Electronics and Applications, EPE-ECCE Europe 2015 - Geneva, Switzerland
Duration: 2015 Sep 82015 Sep 10

Other

Other17th European Conference on Power Electronics and Applications, EPE-ECCE Europe 2015
CountrySwitzerland
CityGeneva
Period15/9/815/9/10

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Keywords

  • Contactless power supply
  • Efficiency
  • Power factor correction
  • Rail vehicle
  • Transformer

ASJC Scopus subject areas

  • Fuel Technology
  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology

Cite this

Moriki, K., Kawamura, A., Shimono, T., Nozaki, T., Ikeda, K., Sato, J., Hayashiya, H., & Yamamoto, H. (2015). Efficiency study of coaxial contactless power transmission for electric railway. In 2015 17th European Conference on Power Electronics and Applications, EPE-ECCE Europe 2015 [7309111] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/EPE.2015.7309111