Fixed Switching Frequency Model Predictive Control for Parallel Inverters in Microgrids

Fernanda Carnielutti; Mokhtar Aly; Margarita Norambuena; Jiefeng Hu; Josep Guerrero; Jose Rodriguez

doi:10.18618/REP.e202430

Authors

Fernanda Carnielutti Universidade Federal de Santa Maria https://orcid.org/0000-0001-8257-7580
Mokhtar Aly San Sebastián University https://orcid.org/0000-0002-9236-7840
Margarita Norambuena Universidad Técnica Federico Santa María https://orcid.org/0000-0002-2530-2000
Jiefeng Hu Federation University https://orcid.org/0000-0001-6725-4564
Josep Guerrero Aalborg University
Jose Rodriguez San Sebastián University https://orcid.org/0000-0002-1410-4121

DOI:

https://doi.org/10.18618/REP.e202430

Keywords:

Master-Slave, Parallel Inverters, Microgrids Model, Predictive Control

Abstract

A Fixed-Switching-Frequency Model Predictive Control (FSF-MPC) for Master-Slave inverters in microgrids is proposed in this paper. The Master is a three-phase, two-level inverter with an LC filter, while the Slave is a three-phase, two-level inverter with an LCL filter. The inverters are connected in parallel in a microgrid, composed of different loads. The voltage and current inner control loops of the Master-Slave FSF-MPC are presented for both inverters. Then, two modes of operation are proposed: grid-connected and islanded, and the primary control for both cases is developed. Finally, Hardware-in-the-Loop (HIL) results are presented for different operational conditions of the microgrid with load-related disturbances. The HIL results validate the good performance of the proposed Master-Slave FSF-MPC, including fast dynamic response, multi-objective control, and fixed switching frequency.

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Author Biographies

Fernanda Carnielutti, Universidade Federal de Santa Maria

received the bachelor degree in electrical engineering in 2010 from the Federal University of Santa Maria (UFSM), Santa Maria, Brazil, where she received the master and doctoral degrees in electrical engineering in 2012 and 2015. She is currently a Professor with the Federal University of Santa Maria and a Researcher with the Power Electronics and Control Research Group (GEPOC), UFSM. Her research interests include modulation of static power converters, multilevel converters power electronics for renewable energies, microgrids and model predictive control. Dr. Carnielutti is a member of the IEEE Power Electronics Society, the IEEE Industrial Electronics Society, the IEEE Industry Applications Society, and the Associação Brasileira de Eletrônica de Potência.

Mokhtar Aly, San Sebastián University

received the B.Sc. and M.Sc. degrees in electrical engineering from Aswan University, Aswan, Egypt, in 2007 and 2012 and the Ph.D. degree from the Department of Electrical Engineering, Faculty of Information Science and Electrical Engineering, Kyushu University, Japan in 2017. In 2008, he joined the Department of Electrical Engineering, Aswan University, as an Assistant Lecturer, where he has been an Assistant Professor with the Faculty of Engineering since 2017. He worked as a Postdoctoral Researcher with the Solar Energy Research Center (SERC-Chile), Universidad Técnica Federico Santa María, Chile from 2019 to 2021. He is currently an Assistant Professor with Universidad San Sebastián, Santiago, Chile since 2021. His research interests include reliability of power electronics systems in renewable energy applications, multi-level inverters, fault tolerant control, electric vehicles and light emitting diode (LED) drivers. He is a member in IEEE Power Electronics Society (PELS), IEEE Industrial Electronics Society (IES), and IEEE Power and Energy Society (PES).

Margarita Norambuena, Universidad Técnica Federico Santa María

Margarita Norambuena received the B.S. and M. Sc. degrees in electrical engineering from the Universidad Tecnica Federico Santa Maria (UTFSM), Valparaiso, Chile, in 2013. She received her Ph.D. degree (summa cum laude) in electronics engineering from the UTFSM in 2017. She received the Doktoringenieur (Dr-Ing.) degree (summa cum laude) from the Technische Universitat Berlin (TUB) in 2018. She received the IEEE IES Student Best Paper Award 2019 for her doctoral work. She is an Assistant Professor at Universidad Tecnica Federico Santa Maria. Her research interest are multilevel converters, model predictive control of power converters and drives, energy storage systems, renewable energy, and electromobility. Dr. Norambuena is Associate Editor for IEEE JESTPE.

Jiefeng Hu, Federation University

received a Ph.D. degree in electrical engineering from University of Technology Sydney, Australia. He participated in minigrids research at Commonwealth Scientific and Industrial Research Organization, Newcastle, Australia. He was Assistant Professor at The Hong Kong Polytechnic University, Kowloon, Hong Kong. He is currently Associate Professor and Program Coordinator of Electrical Engineering at Federation University Australia, Ballarat, VIC, Australia, where he is also a Stream Leader of Centre for New Energy Transition Research. His research interests include power electronics, renewable energy, and smart microgrids. Dr. Hu is Associate Editor for IET Renewable Power Generation, Editor for IEEE Transactions on Energy Conversion, Associate Editor for IEEE Access, and was Guest Editor for IEEE Transactions on Industrial Electronics for a Special Issue “Applications of Predictive Control in Microgrids.”

Josep Guerrero, Aalborg University

received the B.S. degree in telecommunications engineering, the M.S. degree in electronics engineering, and the Ph.D. degree in power electronics from the Technical University of Catalonia, Barcelona, in 1997, 2000, and 2003. Since 2011, he is Full Professor at the Department of Energy Technology, Aalborg University, Denmark, where he is responsible for the Microgrid Research Program. He is Chair Professor with Shandong University since 2014, Distinguished Guest Professor with Hunan University since 2015, Visiting Professor Fellow with Aston University, U.K., since 2016, and Guest Professor with the Nanjing University of Posts and Telecommunications. In 2019, he became a Villum Investigator. He has published more than 500 journal articles in the fields of microgrids and renewable energy systems. His research interests are different microgrid aspects, including power electronics, distributed energy storage systems, hierarchical and cooperative control, energy management systems, smart metering, Internet of Things for AC/DC microgrid clusters and islanded minigrids, recently focusing on maritime microgrids for electrical ships, vessels, ferries, and seaports. In 2015, he was elevated to IEEE Fellow for his contributions on "Distributed power systems and microgrids." He received the Best Paper Award of IEEE Transactions on Energy Conversion from 2014 to 2015, the Best Paper Prize of IEEE-PES in 2015, and the Best Paper Award of the Journal of Power Electronics in 2016. For five consecutive years, from 2014 to 2018, he was awarded by Clarivate Analytics (former Thomson Reuters) as the Highly Cited Researcher. He is an associate editor for a number of IEEE Transactions.

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