Virtual Impedance-Based Advanced Droop Control for Improved Dynamic Power Sharing in Islanded Microgrid

In this paper, a virtual impedance-based advanced droop control for improved dynamic power sharing in islanded microgrid is presented. A microgrid can be associated to or isolated from the main grid. But the current microgrid is making it difficult for sustainable energy sources to give consumers better quality power. Designing an effective microgrid control is crucial for creating a dependable and sufficient power sharing system. The most promising way for sharing the demand power between microgrid generators and supporting the parallel operation is droop control. But the conventional droop control has an issue with line impedance. In practical, the line impedance in a microgrid between inverters and the point of common coupling is not necessarily the same. So, in this paper, a solution using a virtual impedance loop in the traditional droop control technique is presented in an islanding microgrid to solve the issue. To verify the usefulness of the autonomous operations of the microgrid is demonstrated by the simulation verification.