Power Quality Enhancement in Electrical Systems Using Shunt Active Power Filter: A Literature Review
Year: 2026
Type: article
Abstract: Increased use of nonlinear loads, power electronic converters, industrial automation systems has intensified power quality problems in modern electrical distribution networks. Problems like harmonic distortion, reactive power demand, voltage imbalance, poor power factor causes reduced system efficiency, reliability and performance of sensitive electrical equipment. Passive filters used traditionally for harmonic mitigation but their fixed compensation characteristics, resonance problems and poor adaptability under varying load conditions limit their effectiveness. This paper presents a comprehensive review of Shunt Active Power Filters (SAPFs) as a advanced solution for power quality enhancement. This study discusses the operating principles, configurations and compensation capabilities of SAPFs in the single-phase and three-phase systems both. Various reference current extraction methods including the Instantaneous Reactive Power (p-q) theory and Synchronous Reference Frame (SRF) theory are analyzed along with control techniques such as the hysteresis current control, sinusoidal PWM, fuzzy logic, neural networks, sliding mode control and optimization-based methods. Also Intelligent optimization approaches including PSO, GA and GWO are reviewed for controller tuning and DC-link voltage regulation. This review highlights significant improvements in the THD reduction, power factor correction, reactive power compensation and system stability while identifying the future research challenges in adaptive control, real-time implementation and cost-effective SAPF design.
DOI: 10.55041/ijsrem64224
Author: Brijesh Kumar Brijesh Kumar
Institution: Dr. C. V. Raman University
Language: English
Topic: Power Quality and Harmonics
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W7162695779