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

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

Energies, 2020, vol. 13, issue 1, 1-19

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.

Keywords: hybrid; energy storage system; buck-boost converter; fault ride-through capability (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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