TY - JOUR
T1 - Adaptive backstepping control for master-slave AC microgrid in smart island
AU - Dehghani, Moslem
AU - Niknam, Taher
AU - Ghiasi, Mohammad
AU - Reza Baghaee, Hamid
AU - Blaabjerg, Frede
AU - Dragicevic, Tomislav
AU - Rashidi, Mohammadrashid
PY - 2022/5
Y1 - 2022/5
N2 - To control a smart-island (which comprises three distributed generation (DG) units with their autonomous converters), based on a nonlinear backstepping control (BSC) scheme, an adaptive reference signal, and a state observer are designed to improve the steady-state performance of the system. An adaptive reference value has been designed and used instead of a constant reference signal to improve the system's steady-state performance, e.g., total harmonic distortion (THD), peak value, and effective value in the voltage control mode. The presented adaptive reference is changed based on the error between the reference signal and the output voltage signal to tend the error to zero. Compared to the classical backstepping controllers, the reference signal is pursued with a fast response and a low steady-state of loads alternations. To demonstrate the efficiency, authenticity, and compatibility of the proposed control strategy, offline digital time-domain simulation studies are carried out on a master-slave organized inverter-based microgrids in various load variations like linear and nonlinear loads in MATLAB/Simulink software environment. The obtained results are compared with previously reported techniques. Moreover, the obtained simulation results are verified by performing laboratory-based experimental tests based on digital signal processing (DSP), which validate the proposed control strategy's accuracy, authenticity, and effectiveness under different conditions.
AB - To control a smart-island (which comprises three distributed generation (DG) units with their autonomous converters), based on a nonlinear backstepping control (BSC) scheme, an adaptive reference signal, and a state observer are designed to improve the steady-state performance of the system. An adaptive reference value has been designed and used instead of a constant reference signal to improve the system's steady-state performance, e.g., total harmonic distortion (THD), peak value, and effective value in the voltage control mode. The presented adaptive reference is changed based on the error between the reference signal and the output voltage signal to tend the error to zero. Compared to the classical backstepping controllers, the reference signal is pursued with a fast response and a low steady-state of loads alternations. To demonstrate the efficiency, authenticity, and compatibility of the proposed control strategy, offline digital time-domain simulation studies are carried out on a master-slave organized inverter-based microgrids in various load variations like linear and nonlinear loads in MATLAB/Simulink software environment. The obtained results are compared with previously reported techniques. Moreover, the obtained simulation results are verified by performing laboratory-based experimental tests based on digital signal processing (DSP), which validate the proposed control strategy's accuracy, authenticity, and effectiveness under different conditions.
KW - Smart island power grid
KW - Backstepping controller
KW - Master-slave
KW - Inverter
KW - Adaptive reference signal
KW - State observer
UR - http://www.scopus.com/inward/record.url?scp=85124501642&partnerID=8YFLogxK
U2 - 10.1016/j.energy.2022.123282
DO - 10.1016/j.energy.2022.123282
M3 - Journal article
SN - 0360-5442
VL - 246
SP - 1
EP - 15
JO - Energy
JF - Energy
M1 - 123282
ER -