Design of Fuzzy Logic Controller-Based DPFC Device for Solar-Wind Hybrid System

Abstract

A grid-connected system, in particular, relies heavily on the generation of electricity from Renewable Energy Sources. Because of the Renewable Energy Sources connection to a grid, problems with power quality have arisen. Harmonics, voltage swells, sags and other grid concerns are caused by power quality issues. As solar and wind energy are both free and environmentally beneficial, they are regarded as the finest options for remote (or rural) electricity. The combination of solar power and wind power is a reliable source of energy creating a constant energy flow by avoiding the fluctuations. But this hybrid system gives rise to complications related to power system stability. Most of the industrial loads are controlled by power electronic converters that are sensitive to power system disturbances. Hence the power quality issues diminution is more focused in recent times as it is vital in power supply industry. A number of power semiconductor devices have been developed to overcome the above power quality issues. Distributed Power Flow Controller, which is emerged from Unified Power Flow Controller, is considered as the best reliable device among the others. The DC link is the key distinction between these devices. In case of Distributed Power Flow Controller, the DC connection that links both converters does not exist. Later the system is examined with Fuzzy Logic Controller for Shunt control of Distributed Power Flow Controller. The results of the investigation demonstrate Distributed Power Flow Controller has improved achievement in conditions of harmonics reduction and voltage compensation. MATLAB/Simulink has been used to study the anticipated integrated hybrid system under unbalanced voltage situations.