T-Type Based Cascaded H-bridge Converter Operating as a Split AC Battery and Modified State-of-Charging Hierarchical Balancing Method

Eskandari, Reyhaneh; Venugopal, Prasanth; Watson, Alan; Wheeler, Pat; Soeiro, Thiago Batista

Abstract

This work focuses on the so-called split batteries and proposes the T-type cascaded H-bridge circuit, as a suitable candidate for this application. Furthermore, state-of-charge (SoC) balancing between the battery modules is done by a hierarchical algorithm without requiring any ancillary balancing hardware. To minimize the number of switches in the conduction path and to increase efficiency, the conventional hierarchical algorithm is modified for the T-type based cascaded H-bridge. Finally, a simulation in MATLAB Simulink is performed to verify the feasibility of the proposed AC battery and both conventional and modified balancing algorithms.

• Conference Name: COBEP 2023 - 17th Brazilian Power Electronics Conference and SPEC 2023 - 8th IEEE Southern Power Electronics Conference, Proceedings
• Conference Location: Florianopolis, Brazil
• Start Date: Nov 26, 2023
• End Date: Nov 29, 2023
• Acceptance Date: Nov 26, 2023
• Online Publication Date: Feb 1, 2024
• Publication Date: Nov 26, 2023
• Deposit Date: Jun 14, 2024
• Publisher: Institute of Electrical and Electronics Engineers
• Series ISSN: 2832-2983
• Book Title: 2023 IEEE 8th Southern Power Electronics Conference and 17th Brazilian Power Electronics Conference (SPEC/COBEP)
• ISBN: 979-8-3503-2113-5
• DOI: https://doi.org/10.1109/SPEC56436.2023.10407340
• Public URL: https://nottingham-repository.worktribe.com/output/31435445
• Publisher URL: https://ieeexplore.ieee.org/document/10407340