TY - JOUR
T1 - Multipurpose FCS Model Predictive Control of VSC-Based Microgrids for Islanded and Grid-Connected Operation Modes
AU - Ghiasi, Mohammad
AU - Niknam, Taher
AU - Dehghani, Moslem
AU - Reza Baghaee, Hamid
AU - Wang, Zhanle
AU - Mehdi Ghanbarian, Mohammad
AU - Blaabjerg, Frede
AU - Dragicevic, Tomislav
PY - 2023/6
Y1 - 2023/6
N2 - This article presents an enhanced control strategy for renewable energy resources connected to the grid through voltage-sourced converters (VSCs) in microgrids. The proposed scheme contains a voltage control loop with the minimum inverter switching, a power-sharing controller with the minimum inverter switching, a negative-sequence current controller, and a loop to identify the control system operation mode. All the controllers are designed using the multipurpose finite control set-model predictive control (FCS-MPC) strategy. Since these controllers use the dynamic current and VSC voltage, they can be applied in grid-connected and island operation modes and transferred between them. The method uses voltage–frequency control instead of power control for VSCs. One inverter controls voltage, and the other controls current. The conventional FCS-MPC is enhanced to reduce the computation power by eightfold. This improvement is significant because the maximum switching frequency is limited in practical implementations. Also, the superiority of the proposed multipurpose control scheme is proved theoretically. Simulation is implemented using MATLAB software and compared with methods in the literature. The simulation demonstrates that the presented control strategy is efficient, authentic, and compatible. The proposed method is also tested and validated in hardware experiments.
AB - This article presents an enhanced control strategy for renewable energy resources connected to the grid through voltage-sourced converters (VSCs) in microgrids. The proposed scheme contains a voltage control loop with the minimum inverter switching, a power-sharing controller with the minimum inverter switching, a negative-sequence current controller, and a loop to identify the control system operation mode. All the controllers are designed using the multipurpose finite control set-model predictive control (FCS-MPC) strategy. Since these controllers use the dynamic current and VSC voltage, they can be applied in grid-connected and island operation modes and transferred between them. The method uses voltage–frequency control instead of power control for VSCs. One inverter controls voltage, and the other controls current. The conventional FCS-MPC is enhanced to reduce the computation power by eightfold. This improvement is significant because the maximum switching frequency is limited in practical implementations. Also, the superiority of the proposed multipurpose control scheme is proved theoretically. Simulation is implemented using MATLAB software and compared with methods in the literature. The simulation demonstrates that the presented control strategy is efficient, authentic, and compatible. The proposed method is also tested and validated in hardware experiments.
KW - Current controller
KW - finite control set-model predictive control (FCS-MPC)
KW - grid-connected operation mode (GCOM)
KW - islanded operation mode
KW - voltage controller
UR - http://www.scopus.com/inward/record.url?scp=85141563715&partnerID=8YFLogxK
U2 - 10.1109/JSYST.2022.3215437
DO - 10.1109/JSYST.2022.3215437
M3 - Journal article
SN - 1932-8184
VL - 17
SP - 2558
EP - 2569
JO - I E E E Systems Journal
JF - I E E E Systems Journal
IS - 2
M1 - 9933637
ER -