Robust Control Strategies for Microgrids: A Review

Author ORCID Identifier

https://orcid.org/0000-0002-9811-350X - Fazel Mohammadi

Document Type

Article

Publication Date

6-8-2021

Publication Title

IEEE Systems Journal

Keywords

Microgrids, Voltage control, Power system stability, Frequency control, Uncertainty, Robust control, Power quality

Abstract

Microgrids consisting of photovoltaic (PV) power plants and wind farms have been widely accepted in power systems for reliability enhancement and power loss reduction. Microgrids are capable of providing voltage and frequency support, improving power quality, and achieving proper power-sharing. To achieve such goals and deal with the nonlinear behavior in such systems, appropriate robust control strategies are required to be adopted. This article presents a comprehensive review of robust control methods for microgrids, including AC, DC, and hybrid microgrids, with different topologies and different types of interconnection to conventional power systems based on recently published research studies. The main control objectives, along with proposed control methods, are comparatively discussed for different types of microgrids. Furthermore, several research gaps in this area related to the scalability, robustness assessment, and evaluation approach are discussed. Recommendations are made that can potentially open new research lines to enhance the effectiveness of robust controllers for AC, DC, and hybrid microgrids.

DOI

10.1109/JSYST.2021.3077213

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