International Journal of Research in Advanced Electronics Engineering
2025, Vol. 6, Issue 2, Part A
Comparative analysis of hybrid AC/DC microgrids for renewable energy integration
Author(s): Nirosha Fernando, Suren Rajapaksa and Dilini Perera
Abstract: The study presents a comprehensive comparative analysis of hybrid AC/DC microgrids for renewable energy integration, evaluating their performance against conventional AC and DC configurations under both grid-connected and islanded modes. The primary objective was to examine the operational efficiency, voltage regulation, total harmonic distortion (THD), and energy loss characteristics of each architecture using a MATLAB/Simulink-based simulation framework. The hybrid model incorporated photovoltaic (PV) arrays, wind energy systems, and battery energy storage, interconnected through bidirectional converters for flexible energy flow. Statistical tools such as permutation-based ANOVA and bootstrap confidence intervals were applied to validate performance differences. Results revealed that the hybrid AC/DC microgrid consistently achieved higher energy efficiency (approximately 96% in grid-connected and 95% in islanded operation) and lower losses compared to AC (≈92% and 90%) and DC (≈94% and 92%) systems. Voltage deviation and frequency fluctuations were significantly reduced in hybrid operation due to coordinated droop and hierarchical control mechanisms, while THD remained within acceptable limits. The findings confirm that hybrid microgrids provide a superior balance of efficiency, power quality, and stability, effectively addressing the limitations of single-type systems. The research supports the hypothesis that hybrid configurations represent the most sustainable pathway for integrating variable renewable resources, enhancing system reliability, and enabling future smart-grid applications. Practical recommendations include promoting standardized hybrid design frameworks, advancing converter control strategies, integrating energy storage systems, and developing adaptive energy management protocols for improved resilience. This investigation underscores the potential of hybrid AC/DC microgrids as a transformative solution for modern power networks seeking to achieve high renewable penetration with minimal technical compromise.
Pages: 50-54 | Views: 9 | Downloads: 5
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How to cite this article:
Nirosha Fernando, Suren Rajapaksa, Dilini Perera. Comparative analysis of hybrid AC/DC microgrids for renewable energy integration. Int J Res Adv Electron Eng 2025;6(2):50-54.
