Abstract

This paper presents the comparison of harmonic elimination in AC electric railway system using two different active power filters, a three-phase shunt active power filter (TP-SAPF) and a co-phase shunt active power filter (CP-SAPF). The indicator for performance evaluation of two shunt active power filters is the total current harmonic distortion (%THD I ) on the three-phase and two-phase sides of the AC electric railway system. Simulink/MATLAB program is used to simulate the harmonic elimination in the considered AC electric railway system. The simulation results show that the TP-SAPF can compensate harmonic only the three-phase side of the system. On the other hand, the CP-SAPF can provide good performance to eliminate harmonic on both the three-phase and two-phase sides of the system. Furthermore, the %THD I values of the source currents after compensation are followed by the IEEE std 519-2014.

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