SYSTEMS AND METHODS OF POWER-VOLTAGE DROOP CONTROL FOR A DIRECT CURRENT (DC) MICROGRID

A direct current (DC) microgrid is provided. The microgrid includes a power converter, a power-voltage (PV) droop control loop, and an inner current control loop of the power converter. The PV droop control loop is configured to receive measurements of a droop current quantity that is not a DC bus current of the DC microgrid. The droop current quantity is used to determine a droop power quantity selected as a power quantity in a PV relationship. The PV droop control loop is further configured to derive a current reference based on droop in the droop power quantity. The inner current control loop is configured to control operation of the power converter by deriving a measured current corresponding to the control quantity based on the measurements of the droop current quantity, directly comparing the current reference with the measured current, and generating switching signals of switches in the power converter.