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
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"
Conference_Titel :
Power Electronics and Applications (EPE´15 ECCE-Europe), 2015 17th European Conference on
DOI :
10.1109/EPE.2015.7309111
