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 language | English |
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| Title of host publication | 2019 4th International Conference on Emerging Trends in Engineering, Sciences and Technology, ICEEST 2019 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| ISBN (Electronic) | 9781728151496 |
| DOIs | |
| State | Published - Dec 2019 |
| Externally published | Yes |
| Event | 4th International Conference on Emerging Trends in Engineering, Sciences and Technology, ICEEST 2019 - Karachi, Pakistan Duration: 10 Dec 2019 → 11 Dec 2019 |
Publication series
| Name | 2019 4th International Conference on Emerging Trends in Engineering, Sciences and Technology, ICEEST 2019 |
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Conference
| Conference | 4th International Conference on Emerging Trends in Engineering, Sciences and Technology, ICEEST 2019 |
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| Country/Territory | Pakistan |
| City | Karachi |
| Period | 10/12/19 → 11/12/19 |
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