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The present work aims to reduce dominant current harmonics (5th, 7th, 11th and 13th) for a harmonically balanced system, at the point of common coupling, of a 240V (rms) utility by using two shunt hybrid active filters, connected parallel to each other. Phase Locked Loop free, Modified Synchronous Reference frame theory has been used for detection of harmonics. A three phase uncontrolled bridge rectifier,...
Paper is produced to grant a concept regarding the use of shunt hybrid active power filter to counteract the deteriorating effect of harmonics in electrical power utility system. 3-phase uncontrolled bridge rectifier has been used as a source of current harmonics of order 6n±1 where n is an integer, producing Harmonically Balanced Condition by drawing equal magnitude of (6n±1)th current harmonic in...
Present work aims to remove the source current harmonics of order 6n±1 where, n is an integer present in power utility system under realistic scenario. This realistic scenario represents a harmonically unbalanced condition which is caused by multiple non-linear loads attached to different phases of 3-phase power supply. It creates different amplitude spectrum of individual source current harmonic...
The present work aims to remove dominant current harmonics (5th,7th,11th and 13th) of a 240V(rms) utility at the point of common coupling for the harmonically unbalanced condition of source current, using parallel combination of two shunt hybrid active filters. The harmonically unbalanced condition of source current has been created by connecting different types of non-linear loads in different phases...
Present work aims to improve the dynamic response and reliability of Shunt Hybrid Active Filter (SHAF) configuration using improved methods of harmonic detection. A method of introduction of only “positive inductance” through an active filter for mistuned conditions of the passive filter has been presented. “PLL free” scheme of harmonic detection for an uncontrolled rectifier type of non linear load...
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