• Surendra

This paper proposes a novel three-phase Transformer less Hybrid Series Active Filter (THSeAF) based on Fuzzy controller can be used for robust performance to address major power quality issues related to residential and commercial buildings. This power quality compensator presents an affordable solution to overcome current related issues as well as integrating renewables to ensure a sustainable supply to the loads. The controller is based on a novel combination of Synchronous Reference Frame (SRF) and p-q theory to extract voltage and current harmonics as well as voltage unbalances. A proportional resonant (P+R) regulator is producing gate switching signals for the three-phase THSeAF. The generated duty-cycle waveforms will produce compensating voltage to rectify harmonic currents initiated from typical non-linear loads. The device ensures a reliable and dynamically restored power supply on the load’s point of common coupling (PCC) by means of three auxiliary DC supplies. The paper describes mitigation of power quality related issues of a micro-grid systems and Smart Distribution Grids along with the proposed solution to enhance the power system performances. In proposed method. Threshold values of existing and proposed methods has been compared and the proposed threshold value is less than the existing system. Hence by using the fuzzy logic controller in proposed system reduced the voltage and current threshold values. So that improves the performance of operation in proposed system. The proposed method has been simulated in 2013a MATLAB/SIMULINK.

Series hybrid active filter, power quality, current harmonics, voltage restoration, instantaneous power theory, proportional resonant controller.

"Implementation of a Three-phase THSeAF Based on Fuzzy controller to Improve Power Quality of Weak Distribution Systems", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 8, page no.827-834, August-2018, Available :http://www.jetir.org/papers/JETIR1808421.pdf

"Implementation of a Three-phase THSeAF Based on Fuzzy controller to Improve Power Quality of Weak Distribution Systems", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 8, page no. pp827-834, August-2018, Available at : http://www.jetir.org/papers/JETIR1808421.pdf