Power Quality Improvement in Photovoltaic Microgrid System Using FOPID Controller-Based DVR

Voltage distribution in the power grid can now be alleviated, due to rapid advances in power electronic technology. In today's power grid, where sensitive loads have been used, power quality is a critical concern that can affect consumers and utility companies. Damage to equipment, temporary shutdowns, product quality deterioration and voltage sag and swell are all major issues in a multi-site environment. The phase locked loop (PLL) methodology with controllers (FOPID) is used to construct the Dynamic voltage restorer (DVR) control logic, and its usefulness is illustrated in MATLAB/SIMULINK.