Certain investigations onPerformance of shunt activePower filter for power quality Enhancement

Abstract

High quality power is vital for Engineering, research and industrial newlineapplications to bring good quality results and for accurate evaluation Power newlineelectronic circuits which are generally nonlinear in its nature are widely used newlinein various industrial commercial and residential applications An important newlineproblem associated with nonlinear loads is the generation of harmonics which newlineaffect the performance of other utilities connected to the same system The newlinehigher usage of nonlinear loads results in considerable source current newlinedistortion which is a major power quality problem in industries The nonlinear newlineloads generate non sinusoidal current in AC mains and cause reactive power newlineas a concern low power factor excessive neutral current and distortion in newlinequality of power The nonlinear loads are also responsible for lower newlineefficiency of the system Though passive filters are used to eliminate line newlinecurrent harmonics and to improve the power factor such filters also have newlinemany disadvantages like resonance bulk size and fixed compensation newlinecharacteristics In the proposed research work the problems mentioned are newlineaddressed and control strategies for Shunt Active Power Filter SAPFhave newlinebeen developed to improve the profile of source current thereby improving newlinethe quality of power newline newline