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

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

doi:10.3390/en13010257

Energies (Jan 2020)

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

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

Affiliations

Ramy Georgious: LEMUR Research Group, Deprtment of Electrical, Electronic, Computers and Systems Engineering, University of Oviedo, 33204 Gijon, Spain
Jorge Garcia: LEMUR Research Group, Deprtment of Electrical, Electronic, Computers and Systems Engineering, University of Oviedo, 33204 Gijon, Spain
Mark Sumner: PEMC Research Group, Deprtment of Electrical and Electronic Engineering, University of Nottingham, Nottingham NG7 2RD, UK
Sarah Saeed: LEMUR Research Group, Deprtment of Electrical, Electronic, Computers and Systems Engineering, University of Oviedo, 33204 Gijon, Spain
Pablo Garcia: LEMUR Research Group, Deprtment of Electrical, Electronic, Computers and Systems Engineering, University of Oviedo, 33204 Gijon, Spain

DOI: https://doi.org/10.3390/en13010257
Journal volume & issue: Vol. 13, no. 1
p. 257

Abstract

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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.

Published in Energies

ISSN: 1996-1073 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology
Website: http://www.mdpi.com/journal/energies

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