Stability analysis of droop control for inverter using dynamic phasors method

This paper use the dynamic phasors method to analyze the stability of droop control for inverter, and got the stability judge criterion, based on the analysis results, the virtual impedance is introduced to improve the stability of droop control. Comparing with the conventional method, it is more simple, clear and useful for the design of a stable droop controller. The simulation and experimental results are shown to verify this method.