Nonlinear Output Feedback Droop Control for Parallel Inverters in Standalone Microgrids

Abstract

This paper proposes a nonlinear control scheme for power-sharing between parallel distributed generations in a standalone microgrids. Generally, a linear control-based droop method is applied to balance the power in between multigenerating units and demands; however, the poor performance of such types of schemes is observed under sudden change of operating point. To overcome this issue, this paper designs nonlinear output feedback linearized droop control for the active and reactive power sharing in a network. The performance of the proposed controller is demonstrated under load variation in using simulations of a Simulink for the standalone AC microgrids system.