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Investigation of Autotransformer Configuration to Enhance Collecting Voltage in Train  

Kim, Joo-Rak (한국철도기술연구원)
Kim, Jung-Hoon (홍익대학교 전자전기공학부)
Publication Information
Journal of the Korean Society for Railway / v.13, no.1, 2010 , pp. 65-70 More about this Journal
Abstract
AC traction power supply system has adopted autotransformer (AT) feeding method. This system has an advantage as long feeding distance. However, the countermeasure for voltage drop should be considered, because load capacity grows larger and headway grows shorter in recent electric railway system. This paper proposes the improved system configuration to enhance voltage drop in ac railway system without additional power electronic device. That is to increase turn ratio between contact wire and rail of AT. By modifying turn ratio of AT at SSP or SP, collecting voltage on train will be enhanced.
Keywords
ac traction power supply system; autotransformer; voltage drop; train voltage;
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