Perbandingan Performa Reduksi Arus Harmonisa pada Stasiun Pengisian Daya Cepat DC dengan Menggunakan Filter Aktif Shunt (SAF) dan Modulasi Lebar Pulsa Sinusoidal (SPWM)

Abstract

In supporting the transition to clean energy, DC fast-charging stations for electric vehicles face significant power-quality challenges due to harmonic currents generated by non-linear power converters. These harmonics can reduce system efficiency and accelerate equipment wear. This study compares two harmonic-mitigation techniques—Shunt Active Filter (SAF) and Sinusoidal Pulse Width Modulation (SPWM)—in a three-phase, 100 kW DC fast-charging system modeled in MATLAB/Simulink. Simulation results indicate that SAF reduces the current Total Harmonic Distortion (THD) on phases R, S, and T from 26.99%, 24.56%, dan 21.80% down to 1.20%, 1.06%, dan 1.98%, respectively. Meanwhile, SPWM lowers THD to 0.77%, 0.88%, dan 1.58% on the same phases. Therefore, SAF demonstrates superior effectiveness in mitigating current harmonics and is recommended for enhancing power quality in DC fast-charging stations