PT - JOURNAL ARTICLE AU - SzelÄ…g, Adam AU - Steczek, Marcin TI - Analysis of Input Impedance of the Traction Vehicle with DC Chopper as a Function of Operation Mode DP - 2007 Dec 31 TA - Communications - Scientific Letters of the University of Zilina PG - 10--13 VI - 9 IP - 4 AID - 10.26552/com.C.2007.4.10-13 IS - 13354205 AB - A problem of analysis of the input impedance of a converter traction vehicle is presented in the paper. The value of input impedance of a traction vehicle has significant influence of compatibility between track circuits and traction vehicles. The model of chopper controlled DC series motor vehicle was implemented as a simulation model including all significant parameters of the whole system: substation-catenary-input filter-chopper. Exemplary results of analysis of the specific locomotive EM10 are included. The results both of analytical and simulation approach for low frequency input impedance computations were compared.