Improvement of Power Quality in a Three-Phase System Using an Adaline-Based Multilevel Inverter

Abstract

The existence of harmonics in the power distribution system (PDS) is treated as the most serious issue that affects its stability and reliability. The active power filter (APF) therefore plays a vital role in PDS to compensate for the harmonics for the improvement of the power quality (PQ) and to keep the total harmonic distortion (THD) below 5% as per IEEE-519. In this work, a three-phase four-wire (3P-4W) multi-level inverter (MLI)-based APF is proposed to overcome the shoot-through effect (STE) and reduce the distortions in the supply current. The control of the voltage source inverter (VSI) is achieved using an Adaline-based LMS (A-LMS) algorithm with a hysteresis current controller. The proposed filter that uses the ALMS technique is compared with the conventional recursive least square (RLS) algorithm. The ALMS approach is mainly operated for maintaining the dc link voltage of MLI, which follows the principle of capacitor energy and reduces the total harmonic distortion (THD) under different load variations. The performance of MLI under different load conditions is designed, developed, and validated by using a MATLAB/Simulink environment, and the preeminent features are established.

An Adaptive Neuro-Fuzzy Control Strategy for Improved Power Quality in Multi-Microgrid Clusters

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MPC with Space Vector Phase-Shift PWM (SV-PSPWM) Technique with Harmonic Mitigation Strategy for Shunt Active Power Filters Based on H-Bridge Multilevel Converter

“…This increasing number of connected devices causes problems such as increased reactive power and the harmonic distortion of the electrical current power grid. Consequently, other issues appear in the distribution grid, for instance, overheating of the conductors, current surges, high current consumption, which leads to resizing connections and possible damage to devices connected to the power grid (Motta and Faúndes, 2016;Das et al, 2020). Consequently, various types of equipment have been proposed to solve these power quality problems, namely.…”

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