Role of DC Capacitor in VSI Based Active Power Line Conditioning System

TitleRole of DC Capacitor in VSI Based Active Power Line Conditioning System
Publication TypeConference Paper
Year of Publication2009
AuthorsGeorge, M, Basu K P
Conference NameProceedings of the 44th International Universities Power Engineering Conference
Date PublishedSeptember
Conference LocationUniversity of Strathclyde
KeywordsPower electronic devices and applications Power Quality
Abstract

This manuscript is aimed to differentiate the role of DC capacitor in voltage source inverter based active power line conditioning (APLC) system. To achieve this objective, a single six-pulse converter and three-phase parallel converters with different firing angles have been chosen as the load. A novel control circuit based on instantaneous p-q theory has been proposed to determine the compensation current associated with three-phase parallel converters. It has been observed that APLC system having separate DC supply is able to deliver all the components of power other than the positive sequence fundamental average power to achieve balanced sinusoidal source currents in phase with respective source voltages and thereby minimizes the power delivered from the ac source.