| Autor: |
Godinho, Marcelo Oliveira, Leal, Wagner Coelho, Moreto, Raphael Francisco, de Aguiar, Cassius Rossi, Machado, Ricardo Quadros |
| Zdroj: |
IEEE Journal of Emerging and Selected Topics in Industrial Electronics; October 2023, Vol. 4 Issue: 4 p1224-1234, 11p |
| Abstrakt: |
A nonlinear state-of-charge (SoC)-adaptive management and control scheme is applied to dc microgrids (MGs) supplied by energy storage systems (ESSs) and connected to the grid. The management and control strategies are performed via decentralized methodologies, allowing power sharing between the battery banks with or without a low-speed communication link, while their limits of operation for charging and discharging are not exceeded. In addition, the aforementioned technique is based on the sigmoidal function where the solution shows two degrees of freedom as the dc-link voltage error and the SoC in the outer loop (dc-link voltage control), and classical proportional-integral (PI) controllers regulating the current flow through the dc/dc power converters in the inner loop. To analyze the system stability, the dc MG model was calculated to evaluate the poles movement, frequency, and step responses at different scenarios. Finally, the authors rely on a set of results in the Typhoon 602+ hardware to demonstrate the effectiveness of the proposed solution as well as, a comparison between it and the classical droop controller. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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