Open AccessDesign and Simulation of three Phase three Wire Shunt Active Filter using Instantaneous PQ Theory
Author(s) -
Tilak Giri,
Ram Prasad Pandey,
Sabin Bhandari,
Sujan Moktan,
Lagat Karki
Publication year - 2020
Publication title -
journal of the institute of engineering
Language(s) - English
Resource type - Journals
ISSN - 1810-3383
DOI - 10.3126/jie.v15i1.27728
Subject(s) - harmonics , power factor , ac power , shunt (medical) , active filter , total harmonic distortion , electronic engineering , control theory (sociology) , electronic filter , converters , computer science , engineering , electrical engineering , voltage , medicine , control (management) , artificial intelligence , cardiology
Due to intensive use of power converters and other non-linear loads, power quality is degrading. The presence of harmonics in the power lines result in greater power losses in distribution, interference problems in communication systems. Non linearity reduces the efficiency and power factor of the system. As the power factor reduces, the reactive power demanded from the supply increases which have no any contribution in energy transfer, so compensation is required. For this, shunt passive filter has been developed but it is bulky and frequency dependent and has many drawbacks. In contrast to passive filter, shunt active filter (SAF) has been developed which is smaller and has wide range of applications. In this paper, shunt active filter based on p-q theory is demonstrated for compensating reactive power and current harmonics. Simulation has been done with and without SAF and results are presented and ended with recommendation and conclusion. An effort is made to reduce the THD of the source current below 5% (specified by IEEE).