Power Quality Improvement using Passive & Active Filters

  IJETT-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
© 2016 by IJETT Journal
Volume-36 Number-3
Year of Publication : 2016
Authors : Anuj Chauhan, Ritula Thakur
DOI :  10.14445/22315381/IJETT-V36P225


Anuj Chauhan, Ritula Thakur"Power Quality Improvement using Passive & Active Filters", International Journal of Engineering Trends and Technology (IJETT), V36(3),130-136 June 2016. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group

Poor quality of electric supply is normally caused by power line disturbances such as transients, notches, momentary interruptions, voltage sag and swell, over-voltage, under-voltages and harmonic distortions. Filters are used for improving the power quality. Active and Passive filters eliminate major fluctuating factors. Hybrid filters are the combination of active and passive filters. Conventional Active Filtering using PLL also reduces the harmonics. Total Harmonic Distortion (THD) can be reduced by implementing combination of active and passive filters. To design a hybrid power filter to reduce the harmonics for enhancing the quality of power. Also compare various topologies of filters to evaluate the best filter for power quality enhancement using MATLAB.


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Active filters, Hybrid filters, Phase lock loop (PLL) Passive Filter, Total Harmonic Distortion (THD)