A Robust Fractional-Order Control Scheme for PV-Penetrated Grid-Connected Microgrid

Nikhil Pachauri, Vigneysh Thangavel, Velamuri Suresh, Mvv Prasad Kantipudi, Hossam Kotb, Ravi Nath Tripathi () and Mohit Bajaj ()
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Nikhil Pachauri: Department of Mechatronics, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal 576104, India
Vigneysh Thangavel: School of Electrical and Electronics Engineering, SASTRA Deemed to Be University, Thanjavur 613401, India
Velamuri Suresh: Symbiosis Institute of Technology, Symbiosis International (Deemed University), Pune 412115, India
Mvv Prasad Kantipudi: Symbiosis Institute of Technology, Symbiosis International (Deemed University), Pune 412115, India
Hossam Kotb: Department of Electrical Power and Machines, Faculty of Engineering, Alexandria University, Alexandria 21544, Egypt
Ravi Nath Tripathi: Nagamori Actuator Research Center, Kyoto University of Advanced Science, Kyoto 6158577, Japan
Mohit Bajaj: Department of Electrical Engineering, Graphic Era (Deemed to Be University), Dehradun 248002, India

Mathematics, 2023, vol. 11, issue 6, 1-18

Abstract: This article presents a new cascaded control strategy to control the power flow in a renewable-energy-based microgrid operating in grid-connected mode. The microgrid model is composed of an AC utility grid interfaced with a multi-functional grid interactive converter (MF-GIC) acting as a grid-forming converter, a photovoltaic (PV) power-generation system acting as grid-feeding distributed generation unit, and various sensitive/non-sensitive customer loads. The proposed control strategy consists of a fractional order PI (FO-PI) controller to smoothly regulate the power flow between the utility grid, distributed generation unit, and the customers. The proposed controller exploits the advantages of FO (Fractional Order) calculus in improving the steady-state and dynamic performance of the renewable-energy-based microgrid under various operating conditions and during system uncertainties. To tune the control parameters of the proposed controller, a recently developed evaporation-rate-based water-cycle algorithm (ERWCA) is utilized. The performance of the proposed control strategy is tested under various operating conditions to show its efficacy over the conventional controller. The result shows that the proposed controller is effective and robust in maintaining all the system parameters within limits under all operating conditions, including system uncertainties.

Keywords: microgrid; renewable energy; power management; FO-PI; ER-WCA (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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