Harmonics Suppression in Distribution Networks composed of Uninterruptible Power Supply Systems

Asad Waqar, M. Amir, Imtiaz Alam, Zeashan Hameed Khan, Sohaib Ali Khan, Tausif Zahid, M. Zahid

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

In recent years, utilization of power electronic converters has been drastically increased. These converters act like non-linear loads for utility grid. Such non-linear loads distort the supply current through injection of harmonics. One such example is the uninterruptible power supply (UPS) system, which is a major source of current harmonics. These harmonics affect the performance of distribution transformers in terms of losses, heating of core, stress on insulation and tripping of the protection relays. In this paper, the increase of total harmonic distortion (THD) of the supply current, caused by uncontrolled rectifiers used in UPS systems, has been minimized. Two methods including passive filters (PF) and active filters (AF) have been applied to minimize the THD. The simulations have been performed in MATLAB/Simulink environment where the results of both schemes have been compared under various load conditions (RL and unbalanced load). It has been found that AF provides a better solution as compared to PF for such load conditions.

Original languageEnglish
Title of host publication2019 4th International Conference on Emerging Trends in Engineering, Sciences and Technology, ICEEST 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728151496
DOIs
StatePublished - Dec 2019
Externally publishedYes
Event4th International Conference on Emerging Trends in Engineering, Sciences and Technology, ICEEST 2019 - Karachi, Pakistan
Duration: 10 Dec 201911 Dec 2019

Publication series

Name2019 4th International Conference on Emerging Trends in Engineering, Sciences and Technology, ICEEST 2019

Conference

Conference4th International Conference on Emerging Trends in Engineering, Sciences and Technology, ICEEST 2019
Country/TerritoryPakistan
CityKarachi
Period10/12/1911/12/19

Bibliographical note

Publisher Copyright:
© 2019 IEEE.

Keywords

  • Harmonics
  • Passive filters
  • Power quality
  • Total Harmonic Distortion
  • active filters
  • distribution network

ASJC Scopus subject areas

  • Artificial Intelligence
  • Computer Networks and Communications
  • Computer Science Applications
  • Information Systems and Management
  • Safety, Risk, Reliability and Quality
  • Health Informatics

Fingerprint

Dive into the research topics of 'Harmonics Suppression in Distribution Networks composed of Uninterruptible Power Supply Systems'. Together they form a unique fingerprint.

Cite this