Autonomous operation of hybrid microgrid with AC and DC subgrids

This paper investigates on power-sharing issues of an autonomous hybrid microgrid. Unlike existing microgrids which are purely ac, the hybrid microgrid studied here comprises dc and ac subgrids interconnected by power electronic interfaces. The main challenge here is to manage power flows among all...

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Bibliographic Details
Main Authors: Loh, Poh Chiang, Li, Ding, Chai, Yi Kang, Blaabjerg, Frede
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Published: 2013
Subjects:
Online Access:https://hdl.handle.net/10356/99485
http://hdl.handle.net/10220/17601
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Institution: Nanyang Technological University
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Summary:This paper investigates on power-sharing issues of an autonomous hybrid microgrid. Unlike existing microgrids which are purely ac, the hybrid microgrid studied here comprises dc and ac subgrids interconnected by power electronic interfaces. The main challenge here is to manage power flows among all sources distributed throughout the two types of subgrids, which is certainly tougher than previous efforts developed for only ac or dc microgrid. This wider scope of control has not yet been investigated, and would certainly rely on the coordinated operation of dc sources, ac sources, and interlinking converters. Suitable control and normalization schemes are now developed for controlling them with the overall hybrid microgrid performance already verified in simulation and experiment.