Control Of Shunt Active Filter Based On Instantaneous Power Theory

Control Of Shunt Active Filter Based On Instantaneous Power Theory
Authors : B.Pragathi, G.Bharathi
Publication Date: 30-08-2012


Author(s):  B.Pragathi, G.Bharathi

Published in:   International Journal of Engineering Research & Technology

License:  This work is licensed under a Creative Commons Attribution 4.0 International License.

Website: www.ijert.org

Volume/Issue:   Vol.1 - Issue 6 (August- 2012)

e-ISSN:   2278-0181


Abstract: This paper presents a shunt active power filter based on instantaneous power theory. The active filter will be connected directly to utility in order to reduce THD of load current, in this case the utility is TNB. The objective is to study different control strategies for real time compensating current harmonics at different load conditions. The compensation process is based on the calculation of real power losses using p-q theory and the PI controller reduces the ripple voltage of the dc capacitor of the PWM-VSI. This approach is different from conventional methods and provides effective solution. The switching is done according to gating signals obtained from hysteresis band current controller.


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