DOI:https://doi.org/10.1007/s40565-018-0466-5 |
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Primary and secondary control in DC microgrids: a review |
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Net amount: 1303 |
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Author:
Fei GAO1, Ren KANG2, Jun CAO3, Tao YANG4
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Author Affiliation:
1. Department of Engineering Science, University of Oxford,
Oxford, UK
2. Mixergy, Oxford, UK
3. School of Geography, Geology and the Environment, Keele
University, Keele, UK
4. Department of Electric and Electronic Engineering, The
University of Nottingham, Nottingham, UK
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Abstract: |
With the rapid development of power electronics
technology, microgrid (MG) concept has been widely
accepted in the field of electrical engineering. Due to the
advantages of direct current (DC) distribution systems such
as reduced losses and easy integration with energy storage
resources, DC MGs have drawn increasing attentions
nowadays. With the increase of distributed generation, a
DC MG consisting of multiple sources is a hot research
topic. The challenge in such a multi-source DC MG is to
provide voltage support and good power sharing performance.
As the control strategy plays an important role in
ensuring MG’s power quality and efficiency, a comprehensive
review of the state-of-art control approaches in DC
MGs is necessary. This paper provides an overview of the
primary and secondary control methods under the hierarchical
control architecture for DC MGs. Specifically, inner
loop and droop control approaches in primary control are
reviewed. Centralized, distributed, and decentralized
approach based secondary control is discussed in details.
Key findings and future trends are also presented at last. |
Keywords: |
Primary control, Secondary control, DC
microgrids, Droop control, Power sharing |
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Online Time:2019/03/08 |
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