A Fuzzy Logic-Based Control Strategy for Power Balance and Enhance Power Quality in a Grid-Tied PV System

Abstract

This study emphasizes grid-connected solar photovoltaic systems and fuzzy controllers to optimize the duty cycle of the DC-DC converter and separate the essential components from load current and produce firing signals for voltage source converter operation. The power demand requirement and minimize power quality problems at the common point of coupling were ensured by a fuzzy-based MPPT used to change the duty cycle of the controller and extract the fundamental signals based on the fuzzy similarity index under variable irradiance and ambient temperature conditions. The control approach was applied to a PV system feeding both linear and non-linear loads connected to the grid. The simulation results show a considerable improvement in the performance of the control strategy in mitigating the harmonic disturbances in the system and were inconsist with the requirements of IEEE-519.