Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title Energy Management Method of DC Microgridsby Using Voltage Compensation Term
Authors Byoung-Sun Ko ; Gi-Young Lee ; Seok-Woong Kim ; Rae-Young Kim
Page pp.328-335
ISSN 1229-2214
Keywords DC microgrid ; Voltage restoration ; DC bus signaling ; Low-bandwidth communication ; Communication delay
Abstract An energy management method of DC microgrids using voltage compensation term is proposed in this study. Droop control is often implemented to operate the DC microgrid. However, the droop control necessarily generates voltage variation. Energy flow is also difficult to control because the droop control mainly focuses on proportional load sharing. To solve these problems, the voltage compensation term based on the low-bandwidth communication is used to determine the operating band of the converter. Energy management and voltage variation minimization can be achieved by judging the operating band according to the magnitude of voltage compensation term. The validity of the proposed method is verified by simulation and experiments.