Power Quality Improvement with Mitigation of Harmonic Distortion in Three-phase System Based on Shunt Active Power Filter Mechanism

Abstract

In response to rising business cost and global environmental concerns, this research proposes a mechanism to improve power quality by reducing total harmonic distortion (THD) in three-phase three-wire system using shunt active power filter (SAPF). Three control algorithms are utilized to achieve a reduction in THD: DC-link capacitor voltage, hysteresis current, and harmonic extraction algorithms. The proposed SAPF mechanism is ideal for small-scale businesses and residential projects keen on energy conservation and natural resources preservation. In the study, simulations were carried out using MATLAB/Simulink. To verify, a prototype was fabricated and experiments were undertaken. The simulation and experimental results are in good agreement. The proposed SAPF mechanism could reduce THD of the system from 41.47% to 15.07%.