Design and analysis three-phase shunt active power filter to mitigate harmonic

Zulkafli, Muhammad Nazri (2021) Design and analysis three-phase shunt active power filter to mitigate harmonic. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Nowadays, the power electronic equipment is widely used by industrial, commercial, and residential consumers which inject harmonic current in the power system. This harmonic will reduce the power quality and creates power quality issues. This report will analyze the three-phase shunt active power filter (SAPF) to improve the power system and to reduce the current harmonic in nonlinear load. Besides, the MATLAB/Simulink will use to verified the shunt active power filter in harmonic mitigate. This project, the harmonic extraction based on the instantaneous power theory (PQ theory) and synchronous reference frame (DQ theory) method is being used to produce a reference current signal. Besides, the conventional proportional-integral (PI) controlled and fuzzy control-based SAFP is being used in the DC-link capacitor voltage regulator. Then, different between DC voltage which is error signal and DC reference voltage will generate. After that, the PI controlled will compensate for the error signal. The subtracts between line current and the harmonic signal from the controlled will be obtained the reference current. After that, the switching signal will be generated in current control algorithm and follow to the switching active power filter. The result for this project will be compared and analyzed. Based on the simulation of the MATLAB/Simulink result, this project confirmed the efficient use of this method to reduce the harmonics in power system.

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