Abstract
This work presents several analysis and design results for primary droop control and secondary control in inductive microgrids. Building on our recent work, we study the problem of set point design in droop-controlled microgrids, and provide a choice of droop coefficients leading to the desired power flows. We then compare and contrast two distributed secondary controllers, and extend them to the case where only a fraction of inverters cooperate in regulating the network frequency. We show that both these secondary-control schemes achieve frequency regulation in the presence of resistive losses.
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