Major Challenges towards Energy Management and Power Sharing in a Hybrid AC/DC Microgrid: A Review

Sohail Sarwar (), Desen Kirli, Michael M. C. Merlin and Aristides E. Kiprakis
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Sohail Sarwar: School of Engineering, University of Edinburgh, Faraday Building, King’s Buildings, Mayfield Road, Edinburgh EH9 3JL, UK
Desen Kirli: School of Engineering, University of Edinburgh, Faraday Building, King’s Buildings, Mayfield Road, Edinburgh EH9 3JL, UK
Michael M. C. Merlin: School of Engineering, University of Edinburgh, Faraday Building, King’s Buildings, Mayfield Road, Edinburgh EH9 3JL, UK
Aristides E. Kiprakis: School of Engineering, University of Edinburgh, Faraday Building, King’s Buildings, Mayfield Road, Edinburgh EH9 3JL, UK

Energies, 2022, vol. 15, issue 23, 1-30

Abstract: A fundamental strategy for utilizing green energy from renewable sources to tackle global warming is the microgrid (MG). Due to the predominance of AC microgrids in the existing power system and the substantial increase in DC power generation and DC load demand, the development of AC/DC hybrid microgrids (HMG) is inevitable. Despite increased theoretical efficiency and minimized AC/DC/AC conversion losses, uncertain loading, grid outages, and intermittent complexion of renewables have increased the complexity, which poses a significant threat toward system stability in an HMG. As a result, the amount of research on the stability, management, and control of HMG is growing exponentially, which makes it imperative to recognize existing problems and emerging trends. In this survey, several strategies from the most recent literature developed to address the challenges of HMG are reviewed. Power flow analysis, power sharing (energy management), local and global control of DGs, and a brief examination of the complexity of HMG’s protection plans make up the four elements of the review technique in this article. During critical analysis, the test system employed for validation is also taken into consideration. A comprehensive review of the literature demonstrates that MILP is a frequently employed technique for the supervisory control of HMG, whereas tweaking bidirectional converter control is the most common approach in the literature to achieve efficient power sharing. Finally, this review identified the limitations, undiscovered challenges, and major hurdles that need to be addressed in order to develop a sustainable control and management scheme for stable multimode HMG operation.

Keywords: hybrid AC/DC microgrid; power sharing; interlinking converter control; energy management (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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