Analysis and Experimental Validation of Bidirectional Z-Source DC Circuit Breakers

This paper discusses the analysis and experimental validation of bidirectional Z-source breaker and bidirectional Z-source breaker using coupled inductor for low-voltage dc microgrid application. The proposed topologies use an SCR as a switch to isolate the fault from the system, and LC network to g...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2020-06, Vol.67 (6), p.4613-4622
Main Authors: Savaliya, Swati G., Fernandes, Baylon G.
Format: Article
Language:English
Subjects:
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Bidirectional control
Bidirectional operation
Capacitors
Circuit breakers
Circuit faults
Commutation
Converters
coupled inductor
Distributed generation
fault analysis
Fault detection
Filtration
Inductors
microgrid
Network topology
power system protection
Topology
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Summary:This paper discusses the analysis and experimental validation of bidirectional Z-source breaker and bidirectional Z-source breaker using coupled inductor for low-voltage dc microgrid application. The proposed topologies use an SCR as a switch to isolate the fault from the system, and LC network to generate required commutation conditions for the SCR under fault conditions. Thus, both topologies are able to isolate the fault naturally within a few microseconds without any fault detection and sensing circuit. In this paper, the breaker operating principle is discussed during fault condition and breaker design criteria are derived. When the breaker is connected in series with power electronic converter, Z-source components offer filtering characteristic. The filtering characteristic offered by the breaker components is analyzed. Functional prototypes are developed for both configurations to validate the breaker performance and experimental results are presented.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2019.2928284