Soomro, A. H.; Larik, A. S.; Mahar, M. A.; Sahito, A. A.; Sohu, I. A. Simulation-Based Analysis of a Dynamic Voltage Restorer under Different Voltage Sags With the Utilization of a PI Controller. Eng. Technol. Appl. Sci. Res. 2020, 10, 5889-5895.