Work

Analyzing The Impact Of Rectifier-based LED Lighting Fixtures On The Electrical Power Distribution System

Year: 2025

Type: article

Abstract: The widespread use of single-phase rectifiers, particularly in residential buildings for LED lighting fixtures, has led to an increase in harmonics in power distribution systems. These harmonics pose significant challenges to power grids and require a thorough assessment of their impact on distribution networks. Therefore, the purpose of this work is to clarify how higher capacitance values at rectifiers' output, which are essential for reducing DC voltage waveform ripple, affect the quality of the input power supply. This study employs analyses and simulations conducted via MATLAB/Simulink to investigate the AC/DC converter circuit and its associated load. The analysis includes calculating output current and voltage ripples, as well as evaluating the total harmonic distortion (THD) in the input current with different capacitor values. The results highlight the adverse consequences of increasing filter capacitance values, which affect both the input current purity and the power factor. Notably, the THD showed a significant increase, reaching approximately 134%, with a low power factor of 0.5 when the output ripple voltage decreased from 307 V to 64 V using a capacitor filter of 1500 ?F.

Source: NTU Journal of Engineering and Technology

DOI: 10.56286/sj0th094

Authors: Noor Awad Assi, Wael Hashem Hamdon, Yasir Mohammed Younes Ameen

Institution: University of Mosul

Language: English

Topic: Power Quality and Harmonics

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Affordable and clean energy, Industry, innovation and infrastructure

Open Access status: diamond

Funder: University of Mosul