Application of Power Electronic Converter for Actual Topologies AC Traction Substation

This paper describes the typical field of power electronic converter in the branch of traction substation. The main attention is paid to problematic of AC-traction substation. This topic is solved here due to the just started conversion from DC-traction system to AC-traction system in Czech Republic. These new AC-traction substations use semiconductor power converters for purpose to minimize un-symmetrical unbalance of input current consumption, to compensate reactive power, to filtrate high-order harmonics etc. This article describe and compare basic attributes of these modern topologies of AC-traction substation.