NDLI: Primary control operation modes in islanded hybrid ac/dc microgrids

Content Provider	IEEE Xplore Digital Library
Author	Unamuno, E. Andoni Barrena, J.
Copyright Year	2015
Description	Author affiliation: Electron. & Comput. Dept., Mondragon Unibertsitatea, Mondragon, Spain (Unamuno, E.; Andoni Barrena, J.)
Abstract	Hybrid ac/dc microgrids are an interesting solution in order to improve the quality of the energy delivered by the electric grid. Typically a hierarchically configured control strategy is adopted, where primary level strategies perform the power control of devices connected to the microgrid. This paper analyzes and compares in simulation five operation modes of primary control strategies in islanded hybrid ac/dc microgrids. The results show that the use of multiple grid-forming units in the ac and dc network of the microgrid requires lower-size energy storage devices and the reliability of the microgrid is improved. The power management of the interface converter between networks is highlighted for improving the performance of the microgrid when different variations of frequency and voltage take place. It is shown that by applying a slightly higher control level strategy to this converter, power variations are shared among all the grid-forming devices and therefore voltage and frequency deviations are balanced.
Starting Page	1
Ending Page	6
File Size	776095
Page Count	6
File Format	PDF
e-ISBN	9781479985692
DOI	10.1109/EUROCON.2015.7313681
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-09-08
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Microgrids Voltage control Frequency conversion Frequency control Performance evaluation Energy storage Hybrid power systems primary control Decentralized control distributed control droop control hierarchical control hybrid microgrids power control
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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