Continuous-Control-Set Model Predictive Control for Three-Level DC–DC Converter with Unbalanced Loads in Bipolar Electric Vehicle Charging Stations

Muhammad Sadiq, Carlos Alfaro Aragon, Yacine Terriche, Syed Wajahat Ali, Chun-Lien Su (), Ľuboš Buzna (), Mahmoud Elsisi and Chung-Hong Lee
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Muhammad Sadiq: Department of Electrical Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City 807618, Taiwan
Carlos Alfaro Aragon: Department of Electronics and Electrical Engineering, Technical University of Catalonia, 08800 Villanova, Spain
Yacine Terriche: Center for Research on Microgrids, Department of Energy Technology, Aalborg University, 9220 Aalborg, Denmark
Syed Wajahat Ali: Department of Electrical Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City 807618, Taiwan
Chun-Lien Su: Department of Electrical Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City 807618, Taiwan
Ľuboš Buzna: Department of Mathematical Methods and Operations Research, University of Zilina, Univerzitna 8215/1, SK-01026 Zilina, Slovakia
Mahmoud Elsisi: Department of Electrical Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City 807618, Taiwan
Chung-Hong Lee: Department of Electrical Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City 807618, Taiwan

Mathematics, 2022, vol. 10, issue 19, 1-23

Abstract: Zero-emission transportation is currently a public priority, especially in big cities. For this reason, the use of electric vehicles (EVs) is receiving much attention. To facilitate the adoption of EVs, a proper charging infrastructure together with energy management is essential. This article proposes a design guideline for a direct current (DC) charging station with bipolar properties. A bipolar system can convert a two-wire system into three wires in a microgrid system with a neutral line. The configuration of the bipolar system supports different loads; therefore, the unbalanced operation is inherent to the system. The proposed bipolar DC charging station (CS) has a three-level balancing converter that reduces the step-down effort chargers. Moreover, this paper proposes the continuous-control-set model predictive control (CCS-MPC)-based balancing strategy that allows the handling of different output loads while keeping the neutral-line voltage efficiently regulated with improved dynamic performance compared to a traditional controller. Stability and parameter robustness analyses are also performed for the control parameter selection. To ensure the performance of the proposed method, both simulation and experimental results are presented and compared with those obtained from the traditional methods.

Keywords: bipolar DC bus; DC charging station; energy management; electric vehicles; model predictive control (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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