| Abstract |
This paper proposes a DC-bus signaling (DBS) method for a power management in a DC microgrid. In order to autonomously increase its reliability and response speed. As opposed to a centralized power management system, which needs communication among the power sources and load, the proposed DBS method uses the common DC-bus voltage to determine proper operation and does not require communication. The DC-bus voltage is the information that signals the status of the DC-bus. In addition, DC-bus voltage bands are proposed to classify the scenarios of DC-bus conditions. The DC microgrid components operate individually to achieve the functionality of the system control in the DC-bus voltage band. This paper suggests a control strategy for power management of various independent components when in islanding mode. A microgrid test-bed is used to test the power management algorithm. The proposed power management algorithm in the islanding mode is analyzed and verified via simulation result from the proposed DC microgrid test-bed. |
