• Sunil Kumar

Non-linear loads (NLL) from domestic appliances, adjustable speed drives of small businesses, and industrial sources flow over the grid unintended harmonics, which affect Power Quality (PQ) negatively. The local compensation method is especially effective in the presence of concentrated nonlinear loads (NLLs) and unbalanced loads (UBLs). Nevertheless, scattered NLLs and UBLs (with small power ratings) make it difficult to detect all load currents and source currents by an APF. Consequently, multiple SAPFs are required , the result may be high costs due to SAPFs not being fully utilized. For multinode systems with distributed NLLs and UBLs, voltage detection based shunt active filters may be the most economical solution. Harmonic resonance has multiplied voltage and current harmonics in industrial power plants and utility power distribution systems due to harmonic propagation between line inductances and shunt capacitors installed for power factor correction.. Therefore, the active power filter based on voltage detection exhibits low resistance for harmonic frequencies, while presenting infinite impedance for fundamental frequencies In order to execute more efficient compensation for distortion caused using downstream and upstream distorted variations in load, this manuscript presents an improved technique for Shunt active power filters. In a three-phase system operating with NLL, the introduced Second-Order Generalized Integrator based harmonic extraction and gain control using the Fuzzy Logic Controller successfully detects the harmonic component of Voltage and current as a result, the system's harmonics are eliminated. The effectiveness of the introduced controller is evaluated in a 3-phase distributed system with dynamic load conditions using the MATLAB/Simulink environment. According to the experimental findings, the novel controller enhances the system's performance by reducing Total voltage Harmonic Distortion to a value of about 2%..

Keywords: Voltage Regulation, Harmonic Mitigation, SOGI-FLC, Shunt Active Power Filter, Power Quality

"Simultaneous compensation of both voltage and current harmonics by shunt active filter using second order generalized integrator in micro grid applications with distributed non linear loads", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.686-698, May-2019, Available :http://www.jetir.org/papers/JETIR1905Y95.pdf

"Simultaneous compensation of both voltage and current harmonics by shunt active filter using second order generalized integrator in micro grid applications with distributed non linear loads", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp686-698, May-2019, Available at : http://www.jetir.org/papers/JETIR1905Y95.pdf