An Enhanced Distributed State Feedback for Secondary Control in an Islanded Microgrid

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Alizadeh Morteza; Askarian Abyaneh Hossein; Bakhshai Alireza; Khodabakhshi Javinani Naser

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Journal Paper

Paper Information

Journal: International Journal of Industrial Electronics, Control and Optimization Year:2022 | Volume:5 | Issue:2 Page(s): 123-132

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Information Journal Paper

Title

An Enhanced Distributed State Feedback for Secondary Control in an Islanded Microgrid

Author(s)

Alizadeh Morteza | Askarian Abyaneh Hossein | Bakhshai Alireza | Khodabakhshi Javinani Naser | Issue Writer Certificate

Keywords

Distributed cooperative control

Islanded microgrid State feedback control

Secondary voltage control

Secondary frequency control

Abstract

This paper applies a new state feedback control to a distributed secondary voltage and frequency control in an islanded microgrid. The problem is focused on the output consensus of the multi-agent systems, which is converted to a first-order dynamic system. The inverter-based distributed generations play as agents in the proposed control strategy. It is assumed that the distributed generators communicate through a communication network modeled by a directed graph (digraph). The distributed output consensus is used to design the secondary controllers. Such innovative controllers synchronize distributed generators' output voltages and frequencies to their reference values by a novel state feedback approach. Compared to the existing consensus protocols, the proposed method provides a different innovative solution to the secondary voltage and frequency control of microgrids, which has a better response in case of communication failures. Finally, extensive and comparative simulations have been presented to verify the validity of the proposed control strategy and the system performance.

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