TY - JOUR N2 - Installation and operation of rail vehicles powered by multiple system voltages forces the construction of multi-system traction substation. The article describes a traction substation power supply with 15 kV output voltage and frequency Hz and 25 kV at 50 Hz. The topology of the power electronics system and the control structure of the power supply enables parallel connection of several power supplies. The selected topology and control structure ensures minimizing the rms value of the LCRL filter capacitor current used at the output of the inverters. The article analyses the influence of harmonics consumed by the active front end (AFE) rectifier used in traction vehicles on the rms current of the LCRL filter capacitor. L1 - http://www.czasopisma.pan.pl/Content/119417/PDF/14_01877_Bpast.No.69(2)_30.04.21_K2_G_OK.pdf L2 - http://www.czasopisma.pan.pl/Content/119417 PY - 2021 IS - 2 EP - e136733 DO - 10.24425/bpasts.2021.136733 KW - asymmetrical regular sampled PWM KW - voltage source inverters KW - traction power supply KW - active front end A1 - Płatek, Tadeusz A1 - Osypinski, Tomasz A1 - Chłodnicki, Zdziaław VL - 69 DA - 08.03.2021 T1 - Traction power supply with three paralleled single phase voltage source inverters SP - e136733 UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/119417 T2 - Bulletin of the Polish Academy of Sciences Technical Sciences ER -