Power Quality Improvement Based on Impedance Matching Traction Transformer in Electrified Railway Traction System.

To solve various issues, encountered in single phase power system, In this paper, Impedance Matching Transformer as a Balance Traction transformer is proposed. The main components of the proposed scheme are Impedance Matching Transformer with a three phase full bridge converter (FBC) as controller. The balance transformer is used to supply to the two single phase electrical railway traction load with 27.5 kV and low level three voltages converter. Hence, there is no need of additional auxiliary transformer to match the voltage of the converter. The method has low cost and less area requirement. The paper elaborates the operating principles of Impedance matching transformer and shows the current transforming relationship, the compensating principle, mathematical model. Simulation results on MATLAB are presented to authenticate the performance of the traction transformer. [ABSTRACT FROM AUTHOR]