A review on different control strategies applied to power filter for power quality improvement

Abstract

In the present power system scenario, wide use of harmonics generated nonlinear loads leads to a challenging job in overcoming the power quality (PQ) challenges like voltage sag and swell, voltage flickering etc. Therefore, much advancement is done in designing various custom power devices (CPD) for compensating harmonics. Further, researches are made based on the renewable energy sources (RES) connected to the grid through the CPD. Several controlling techniques are implemented for switching the CPD at point of common coupling (PCC). This paper focuses on the basic fundamentals of harmonics and its effect in the supply system, comparison of various CPDs and its role in various grid-based applications. Also this paper focuses the research study on the role of CPDs in enhancing the PQ and stability with the grid-connected distributed generation sources or the RES. Recent advancements or trends in PQ improvement are discussed in this literature. Therefore, this literature would helpful for the engineers and researchers to improve PQ in various domestic, industrial and commercial sectors. For convenient reference, a volume of periodicals with over 180 papers on the subject are listed.