Optimal duty ratio maximum power point tracking technique using the SEPIC topology for photovoltaic systems applications

Darbali-Zamora, Rachid; Ortiz-Rivera, Eduardo I.

doi:10.1109/andescon.2016.7836257

Cited by 10 publications

(1 citation statement)

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“…This paper presents a control strategy based on equalizing voltages at both ends of a transaction converter to improve operations with and without local generation-load mismatch. MATLAB is used to develop state-space equations of the DCMG [33], [34], [35], [36]. Simulink is used to simulate the interconnected DCMG system dynamics within the realtime (RT) simulator while having the transactional converter as the equipment under test (EUT).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of an Autonomous Control Scheme for Interconnected DC Microgrids Using a Power Hardware-in-the-Loop Platform

Gonzalez-Candelario,

Darbali-Zamora,

Aponte-Bezares

et al. 2023

IEEE Access

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DC microgrids (DCMGs), typically envisioned with high bandwidth communications, may well expand their application range by considering additional autonomous control strategies, especially to increase resiliency in contingency situation. These strategies are based on the droop control methods, enabling voltage regulation and proportional load sharing based only on local measurements. Control challenges arise when coordinating the output of multiple DCMGs, each composed of several distributed energy resources through bus-to-bus transactional converters. This paper proposes an autonomous control strategy for transactional converters when multiple DCMGs are connected through a common bus. This control strategy seeks to match the external bus voltage with the internal bus voltage, balancing power. Three case scenarios are considered: standalone operation of each DCMG, excess generation on one DCMG, and generation deficit in one DCMG. Results using Sandia National Laboratories' Secure Scalable Microgrid Simulink library, and models developed in MATLAB are compared. These results demonstrated that the proposed control strategy supported the advantage of seamless operation with and without local generation-load mismatches and expanded the range of autonomous operation between DCMGs.

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