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

doi:10.1109/EPE.2015.7309111

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

Department of System Design Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

4 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 C_p. In order to reduce the effect of ESR, parallelization of C_p are introduced. This method achieves power transmission efficiency of 88.0 %.

Original language	English
Title of host publication	2015 17th European Conference on Power Electronics and Applications, EPE-ECCE Europe 2015
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Print)	9789075815221
DOIs	https://doi.org/10.1109/EPE.2015.7309111
Publication status	Published - 2015 Oct 27
Event	17th European Conference on Power Electronics and Applications, EPE-ECCE Europe 2015 - Geneva, Switzerland Duration: 2015 Sept 8 → 2015 Sept 10

Other

Other	17th European Conference on Power Electronics and Applications, EPE-ECCE Europe 2015
Country/Territory	Switzerland
City	Geneva
Period	15/9/8 → 15/9/10

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

Access to Document

10.1109/EPE.2015.7309111

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 Article 7309111 Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/EPE.2015.7309111

Efficiency study of coaxial contactless power transmission for electric railway. / Moriki, Kenta; Kawamura, Atsuo; Shimono, Tomoyuki et al.
2015 17th European Conference on Power Electronics and Applications, EPE-ECCE Europe 2015. Institute of Electrical and Electronics Engineers Inc., 2015. 7309111.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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., 17th European Conference on Power Electronics and Applications, EPE-ECCE Europe 2015, Geneva, Switzerland, 15/9/8. https://doi.org/10.1109/EPE.2015.7309111

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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 = "Contactless power supply, Efficiency, Power factor correction, Rail vehicle, Transformer",

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

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AU - Moriki, Kenta

AU - Kawamura, Atsuo

AU - Shimono, Tomoyuki

AU - Nozaki, Takahiro

AU - Ikeda, Kunio

AU - Sato, Junichi

AU - Hayashiya, Hitoshi

AU - Yamamoto, Hiroshi

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N2 - 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 %.

AB - 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 %.

KW - Contactless power supply

KW - Efficiency

KW - Power factor correction

KW - Rail vehicle

KW - Transformer

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Efficiency study of coaxial contactless power transmission for electric railway

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Keywords

ASJC Scopus subject areas

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