Integrating Multiple Control Actions in Advanced Microgrids: an Analogy to Well-Established Inverter Control

João M. S. Callegari; Lucas S. Araujo; Dener A. de L. Brandão; Braz J. Cardoso Filho; Danilo I. Brandão

doi:10.18618/REP.e202516

Authors

João M. S. Callegari Universidade Federal de Minas Gerais https://orcid.org/0000-0001-6264-351X
Lucas S. Araujo Universidade Federal de Minas Gerais https://orcid.org/0000-0001-9463-6699
Dener A. de L. Brandão Universidade Federal de Minas Gerais
Braz J. Cardoso Filho Universidade Federal de Minas Gerais
Danilo I. Brandão Universidade Federal de Minas Gerais https://orcid.org/0000-0002-5878-1167

DOI:

https://doi.org/10.18618/REP.e202516

Keywords:

Centralized advanced microgrid, disturbance decoupling control, feedback control, feedforward control

Abstract

This paper proposes multiple control actions applied to centralized advanced microgrids (MGs). The well-established control actions feedback (FB), feedforward (FF), and disturbance decoupling (D) commonly used in current control of distributed energy resources (DERs) are herein extended to advanced MGs. Analytical expressions are derived to show the effect of each control action on the well-established DER current control and then on advanced MG control. Comprehensive comparisons between the feedback and all control action strategies are performed for both DER and MG controls. Simulation and experimental results show a dynamic response improvement in load disturbance rejection when all control actions are considered, as well as a reduction in steady-state error for the grid power flow control. By employing low-bandwidth communication between DERs and central controller, no hardware retrofit is required in comparison to what is needed in other state-of-the-art centralized MG controls.

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Author Biographies

João M. S. Callegari, Universidade Federal de Minas Gerais

received the B.Sc. degree in electrical engineering from the Federal University of Viçosa, Brazil, in 2019, the M.Sc. degree in electrical engineering from the Federal Center of Technological Education of Minas Gerais, Brazil, in 2021, and the doctorate degree in electrical engineering at the Federal University of Minas Gerais, Brazil, in 2024. His current research and technical interests include the design and control of grid-connected multifunctional inverters, the reliability of power electronics-based systems, and AC microgrids. Mr. Callegari was the recipient of the President Bernardes Silver Medal in 2019 and the IEEE IAS CMD Student Thesis Contest 2022 (Non-PhD Category).

Lucas S. Araujo, Universidade Federal de Minas Gerais

received the Ph.D. degree in electrical engineering from the Federal University of Minas Gerais (UFMG), Belo Horizonte, Brazil, in 2022. He was a Visiting Researcher at University of Padova, Italy, in 2022. His research is related to control of grid-forming converters, control of microgrids, electric transport and power electronics applied to renewable sources and storage systems.

Dener A. de L. Brandão, Universidade Federal de Minas Gerais

born in 1994 in Belo Horizonte, Brazil, is an electrical engineer (2018) and holds a master’s degree (2021) from the Federal University of Minas Gerais (UFMG). He is currently pursuing a doctorate in Electrical Engineering with a focus on Power Electronics, also at UFMG. Since 2021, he has been a student member of IEEE, and since 2024, a student member of the Brazilian Power Electronics Society (SOBRAEP). His research interests include simultaneous control of microgrids and fast-charging stations, high-power converters for industrial applications, electric drives, power quality, and electric vehicles.

Braz J. Cardoso Filho, Universidade Federal de Minas Gerais

received the Ph.D. degree in electrical engineering from the University
of Wisconsin–Madison, Madison, WI, USA, in 1998. Since 1989, he has been a Faculty Member with the Department of Electrical Engineering, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil, where he is currently a Full Professor, and the Founder and the Head of the TESLA Power Engineering Laboratory. He has authored/co-authored more than 300 technical papers on the topics of power electronics and electrical drives and holds 15 patents and patent applications. His research interests include utility applications of power electronics, renewable energy sources, semiconductor power devices, electrical machines and drives, and vehicle electrification.

Danilo I. Brandão, Universidade Federal de Minas Gerais

received the doctorate degree in electrical engineering from the State University of Campinas (Unicamp), Brazil, in 2015. He was visiting positions at Colorado School of Mines (2009 and 2013), Università degli Studi di Padova (2014) and Norwegian University of Science and Technology (2018 and 2020). He is currently an assistant professor at Federal University of Minas Gerais (UFMG), Brazil. His main research interests are control of grid-tied converters and microgrids. He is a member of SOBRAEP.

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