Fig. 20From: A survey on control issues in renewable energy integration and microgridGrid Voltage Tracking Using PID Controller for (a) Consumer Load, (b) Dynamic Load, (c) Harmonics Load, (d) Unknown Load, (e) Asynchronous Machine Load, (f) Non-linear Load. The Blue (-) and Green (-) Solid Line Represents the Reference and Open-Loop Voltage Respectively and Red (- -) Dashed Line Represents the Closed-Loop Grid VoltageBack to article page