Reconfigurable Quadratic Converters for Electrolysers Utilised in DC Microgrids

In this paper, three topologies of quadratic buck DC-DC converters were proposed that are capable of reconfiguring to semi-quadratic buck-boost converters, in case of an open-circuit fault in their power switch. In other words, with the aid of graph-based circuit synthesis concepts, a topology is ob...

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Bibliographic Details
Published in:IEEE access 2022, p.1-1
Main Author: Gorji, Saman A.
Format: Article
Language:English
Subjects:
Batteries
Buck converters
DC microgrid
DC-DC converter
DC-DC power converters
electrolyser
green hydrogen
Green products
Hydrogen
Microgrids
reconfigurabale converter
Switching circuits
Topology
Voltage control
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Summary:In this paper, three topologies of quadratic buck DC-DC converters were proposed that are capable of reconfiguring to semi-quadratic buck-boost converters, in case of an open-circuit fault in their power switch. In other words, with the aid of graph-based circuit synthesis concepts, a topology is obtained for a safe transition from one switch to another, where all other components maintain their role in contributing to optimal power conversion. Knowing that the quadratic buck converters have been proven to be an effective DC-DC circuit to supply an electrolyser as a load with specific characteristics i.e., low-voltage and high-current, the reconfigurability feature adds an extra measure of success for safer power delivery for such a load that an undesirable shut-down would negatively impact its life-cycle. The performance of three proposed synthesised topologies were compared and validated through simulation and experiments on laboratory prototypes.
ISSN:2169-3536
DOI:10.1109/ACCESS.2022.3214581