Voltage-balancing of two controllers for a DC-DC converter-based DC microgrid with experimental verification

Imbalances are one of the major challenges encountered during DC microgrid operation. This study presents a DC-voltage-balancing strategy that uses a high-performance controller. Indirect-sliding-mode (ISM) control is used in the current control loop and voltage loop to achieve fast dynamics, and a...

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Bibliographic Details
Published inMathematics and computers in simulation Vol. 221; pp. 159 - 179
Main Authors Afkar, Mohammad, Gavagsaz-Ghoachani, Roghayeh, Phattanasak, Matheepot, Pierfederici, Serge
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.07.2024
Subjects
DC microgrids
Indirect sliding mode
Voltage balance
DC microgrids
Voltage balance
Indirect sliding mode
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Summary:Imbalances are one of the major challenges encountered during DC microgrid operation. This study presents a DC-voltage-balancing strategy that uses a high-performance controller. Indirect-sliding-mode (ISM) control is used in the current control loop and voltage loop to achieve fast dynamics, and a conventional proportional-integral (PI) controller with optimized parameters is designed. The performances of the nonlinear and linear controllers are compared and verified through a simulation performed using MATLAB/Simulink, along with an experimental analysis. The voltage-balancing dynamics of the two controllers are also compared. These results demonstrate that the ISM scheme can achieve better DC voltage balancing performance in the transient regime than the conventional PI scheme for the DC-DC converter.
ISSN:0378-4754
1872-7166
DOI:10.1016/j.matcom.2024.02.019