A Dual-Buck–Boost AC/DC Converter for DC Nanogrid With Three Terminal Outputs

Weimin Wu, Houqing Wang, Yuan Liu, Huang Min, Frede Blaabjerg

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24 Citationer (Scopus)

Abstrakt

Due to the widely used dc characterized loads and more distributed power generation sources, the dc nanogrid becomes more and more popular, and it is seen as an alternative to the ac grid. For safety considerations, the dc nanogrid should provide reliable grounding for the residential loads such as the low-voltage ac power system. There are three typical grounding configurations for a dc nanogrid: the united grounding, the unidirectional grounding, and the virtual isolated grounding. Each grounding configuration has its own specifications to ac/dc converters. In this paper, a dual-buck-boost ac/dc converter for use in the united-grounding-configuration-based dc nanogrid with three terminal outputs is proposed. The working principle of this converter is presented in detail through analyzing the equivalent circuits. Experiments are carried out to verify the theoretical analysis.
OriginalsprogEngelsk
TidsskriftI E E E Transactions on Industrial Electronics
Vol/bind64
Udgave nummer1
Sider (fra-til)295-299
Antal sider5
ISSN0278-0046
DOI
StatusUdgivet - jan. 2017

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