Fuzzy Logic–Based Active Power Filtering for Power Quality Enhancement in Industrial and Commercial Electrical Systems

Paper ID: EIJTEM_2025_12_4_106-115

Author's Name: Kundarapu Vaishnavi, Dr. S. Jagadish Kumar

Volume: 12

Issue: 4

Year: 2025

Page No: 106-115

Abstract:

In modern electrical networks, particularly in commercial and industrial sectors, the rapid proliferation of non-linear loads, renewable energy sources, and power electronic interfaces has introduced complex challenges to power quality and system stability. Phenomena such as harmonic distortion, voltage sags and swells, flicker, and instantaneous power oscillations often lead to equipment malfunctions, reduced efficiency, and increased operational costs. This study presents an intelligent control strategy for comprehensive power quality enhancement and mitigation of power oscillations using a fuzzy logic–based control framework. The proposed system integrates conservative power theory (CPT) with an Active Power Filter (APF) to dynamically compensate for harmonics and reactive power under diverse disturbance conditions. MATLAB/Simulink-based simulations demonstrate the superior performance of the fuzzy-controlled APF in achieving improved voltage regulation, harmonic suppression, oscillation damping, and enhanced dynamic stability compared to conventional control techniques. The findings confirm the robustness and adaptability of the proposed approach for real-time applications in smart grid environments.

Keywords: Conservative power theory, instantaneous power oscillations, active power filters, fuzzy logic, harmonic distortions, power quality.

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