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Fault Ride-Through Power Electronic Topologies for Hybrid Energy Storage Systems

Georgious, Ramy; Garcia, Jorge; Sumner, Mark; Saeed, Sarah; Garcia, Pablo

Authors

Ramy Georgious

Jorge Garcia

MARK SUMNER mark.sumner@nottingham.ac.uk
Professor of Electrical Energy Systems

Sarah Saeed

Pablo Garcia



Abstract

This work presents a fault ride-through control scheme for a non-isolated power topology used in a hybrid energy storage system designed for DC microgrids. The hybrid system is formed by a lithium-ion battery bank and a supercapacitor module, both coordinated to achieve a high-energy and high-power combined storage system. This hybrid system is connected to a DC bus that manages the power flow of the microgrid. The power topology under consideration is based on the buck-boost bidirectional converter, and it is controlled through a bespoke modulation scheme to obtain low losses at nominal operation. The operation of the proposed control scheme during a DC bus short-circuit failure is shown, as well as a modification to the standard control to achieve fault ride-through capability once the fault is over. The proposed control provides a protection to the energy storage systems and the converter itself during the DC bus short-circuit fault. The operation of the converter is developed theoretically, and it has been verified through both simulations and experimental validation on a built prototype.

Citation

Georgious, R., Garcia, J., Sumner, M., Saeed, S., & Garcia, P. (2020). Fault Ride-Through Power Electronic Topologies for Hybrid Energy Storage Systems. Energies, 13(1), https://doi.org/10.3390/en13010257

Journal Article Type Article
Acceptance Date Jan 1, 2020
Online Publication Date Jan 4, 2020
Publication Date Jan 1, 2020
Deposit Date Feb 7, 2020
Journal Energies
Publisher MDPI
Peer Reviewed Peer Reviewed
Volume 13
Issue 1
Article Number 257
DOI https://doi.org/10.3390/en13010257
Keywords hybrid ; energy storage system ; buck-boost converter ; fault ride-through capability
Public URL https://nottingham-repository.worktribe.com/output/3706100
Publisher URL https://www.mdpi.com/1996-1073/13/1/257

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