Power Quality Improvement Features Grid Interconnection of Renewable Energy Sources by Active Shunt Filter Using Fuzzy Logic Controller

Abstract

This paper deals with the solar photovoltaic (SPV) based shunt active power filter (SAPF) modeling, as it is an effective power devices for many applications. It diminishes the long extent harmonics of current and also reduces the reactive power. The SAPF contains parallel interconnection of storage capacitor and voltage source inverter (VSI) through the DC link. The compensation capability of SAPF is majorly stimulated with the help of control techniques, which is utilized to calculate the reference current. Additionally, the controller also decides the measurement practices and the number of devices requirement, thus the required costs and quantity will be estimated by controller. The second order generalized integrator (SOGI) based fuzzy logic controller (FLC) is used to calculate the reference current of the SAPF. The proposed control mechanism does not need the require voltage related data, since it uses the details with reference to the load currents and VSI. To deliver sufficient active power to electric grid, the SAPF utilizes the SPV system with the supplementary energy storage component, thus it offers the continuous compensation effectively. The analysis of the proposed method has implemented with multiple voltage conditions under different loads using the MATLAB/ Simulink environment.