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

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

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), Article 257. 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
• Publicly Available Date: Feb 11, 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