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State-Space Modeling and Stability Analysis of MMC-Based Distributed Generation Units in Islanded Microgrids

Authors

  • Saeed Ahmad Rana

    Department of Electrical Engineering, Bahria University Karachi Campus, Pakistan
    Author

  • Haroon Rasheed

    Department of Electrical Engineering, Bahria University Karachi Campus, Pakistan
    Author

DOI:

https://doi.org/10.22581/0569

Keywords:

Modular Multilevel Converter (MMC) , Renewable Energy, Islanded Microgrids, State-Space Modeling, Model Predictive Control, Voltage Regulation

Abstract

The study aims to incorporate Modular Multilevel Converters (MMCs) into islanded microgrids that are now dependent upon off-grid energy systems. As more renewable power sources are integrated into power microgrids, such as solar and wind power, the stability and effective management of power in these microgrids have become complicated. This study was intended to create a state-space formulation of MMC-based distributed generation units in islanded microgrids, conduct stability analysis, and apply a Model Predictive Control (MPC) approach to improve the voltage regulation and power flow. The system dynamics were modelled with the help of MATLAB, and the stability of small signals was evaluated with the help of eigenvalue analysis. The DC voltage was regulated and flow optimization was realized between renewable energy sources, storage, and loads using MPC. The system was dynamically stable and the voltage changes reduced by MPC. Also the system was resilient to the disturbances in terms of fault detection and protection. The proposed structure showed promising results of MMC-based microgrids optimization in islanded mode, and more works will be done to talk about the accuracy of model and improve the harmonic mitigation and real time control optimization.

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Author Biography

  • Haroon Rasheed, Department of Electrical Engineering, Bahria University Karachi Campus, Pakistan

    Department of Electrical Engineering

    Associate Professor

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Published

2026-04-01

Issue

Vol. 45 No. 2 (2026): April Issue

Section

Articles

License

Copyright (c) 2026 Mehran University Research Journal of Engineering and Technology

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

How to Cite

State-Space Modeling and Stability Analysis of MMC-Based Distributed Generation Units in Islanded Microgrids. (2026). Mehran University Research Journal of Engineering and Technology, 45(2), 74-87. https://doi.org/10.22581/0569

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