Fuzzy Logic Controller-Based Dynamic Voltage Restorer for Mitigation of Voltage Sag

摘要

The Dynamic Voltage Restorer (DVR) is a commercially available, popular device to eliminate voltage sags and swells in the distribution lines. Its basic function is to inject the voltage difference (difference between the pre-sag and sag voltage) to the power line and maintains the pre-sag voltage condition in the load side. In this paper, a fast PWM-based Dynamic Voltage Restorer (DVR) has been modeled and simulated with a Fuzzy Logic Controller (FLC) to investigate its performance and the relevant results are presented.