Power Control-Based Fuzzy and Modulated Hysteresis Methods for Micro-Grid using a Photovoltaic System

This paper discusses the smart grid integration of a photovoltaic system. Several methods can be applied for controlling the power injected into the grid by a photovoltaic system. These techniques ensure that the system operates safely and efficiently, and that the power levels are maintained within the required limits. Maximum power point tracking based on fuzzy logic control (FLC) is incorporated into the inverter control in our work. The inverter keeps the power factor by managing the reactive power while controlling the voltage and frequency of the photovoltaic system. Although the hysteresis current control is a useful technique, it has its limitations, particularly when it comes to the frequency control. In the present study, a modulated hysteresis control (MHC) was applied, to ensure that the inverter operates at a constant switching frequency, enhancing the efficiency of the system. The study was done using the Matlab software, and the findings demonstrate that the MHC-studied system supplied low-harmonic energy to a utility grid.