Sangu Ravindra, Dr.V.C.Veera Reddy, Dr.S.Sivanagaraju. “Style of Shunt Active Power Filter to get rid of the harmonic currents and also to compensate the reactive power under distorted as well as imbalanced source voltages in steady condition”. Worldwide Journal of Engineering Trends and Technology (IJETT) ,V2(3):20-24 November to 12 , 2011. ISSN:2231-5381. world wide web.ijettjournal.org. Printed by Seventh Sense Research Group.

Abstract — The shunt active power filter has demonstrated to become a helpful device to get rid of harmonic currents and also to compensate react ive power for straight line/nonlinear loads. This paper presents a manuscript method of determine reference compensation currents from the 3 – phase shunt active power filter (APF) under distorted and/or imbalanced source voltages in steady condition. The suggested appro ach is in contrast to three reviewed shunt APF reference compensation strategies. Results acquired by simulations with Matlab and Simulink reveal that the suggested approach works better compared to reviewed approaches on paying reactive power and harm onic/neutral currents from the load, whether or not the source voltages are seriously distorted and imbalanced. Additionally, the suggested approach yields a less complicated style of the shunt APF controller.

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Keywords
Shunt active power filter, Current source convert ers, Straight line and nonlinear loads. PI Controllers .