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A Modified Redundancy-Based Energy Management System for Microgrids: An SoC Enhancement Approach

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Author(s):
Fagundes, Thales Augusto ; Favaro Fuzato, Guilherme Henrique ; Quirino Magossi, Rafael Fernando ; Ribeiro Silva, Lucas Jonys ; Vasquez, Juan C. ; Guerrero, Josep M. ; Machado, Ricardo Quadros
Total Authors: 7
Document type: Journal article
Source: IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS; v. 71, n. 10, p. 10-pg., 2024-01-04.
Abstract

This article proposes a dc microgrid (MG) composed of a cascaded bidirectional Cuk converter (CBC) connected to a cascaded bidirectional boost converter (CBB) sharing two battery energy storage systems (BESSs) as common inputs. Then, the dc-link from CBC also receives a boost converter, which interfaces the dc utility. Thus, this configuration can coordinate the BESSs and the dc utility by employing the state-of-charge (SoC)-sharing function and the droop controller. In this context, the combination of CBC and CBB can improve the reliability of the SoC-sharing function with the battery-to-battery equalization on CBB and can enhance the availability of power production on the CBC dc-link. Therefore, the main advantage of the proposed method is to ensure the SoC equalization even when the MG is under maintenance or electrical fault. Additionally, the dc MG involves a modified energy management system while Lyapunov's indirect method proves the stability analysis. Finally, the experimental setup validates the feasibility of the proposed approach. (AU)

FAPESP's process: 20/05865-3 - Equalization of energy storage devices for the management and optimization of DC microgrids that use alternative sources as main source
Grantee:Thales Augusto Fagundes
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 22/02721-6 - Equalization of energy storage devices for the management and optimization of DC microgrids that use alternative sources as main source
Grantee:Thales Augusto Fagundes
Support Opportunities: Scholarships abroad - Research Internship - Doctorate
FAPESP's process: 13/20721-4 - Sistem for interconection of distributed generators to the grid: sintesis of micro grids
Grantee:Ricardo Quadros Machado
Support Opportunities: Regular Research Grants
FAPESP's process: 22/00628-9 - Energy management system of a hybrid-flex light urban vehicle
Grantee:Lucas Jonys Ribeiro Silva
Support Opportunities: Scholarships in Brazil - Doctorate