TY - JOUR
T1 - A Novel Unified Controller for Grid-Connected and Islanded Operation of PV-Fed Single-Stage Inverter
AU - Moustafa, Mohamed M.Zakaria
AU - Aboushal, Mohamed
AU - El-Fouly, Tarek
AU - Al-Durra, Ahmed
AU - Zeineldin, Hatem
N1 - Funding Information:
Manuscript received August 4, 2020; revised November 25, 2020 and March 9, 2021; accepted April 8, 2021. Date of publication April 20, 2021; date of current version September 20, 2021. This work was supported by the Khalifa University of Science and Technology under Award CIRA-2019-049. Paper no. TSTE-00834-2020. (Corresponding author: Mohamed M. Zakaria Moustafa.) Mohamed M. Zakaria Moustafa is with the Electrical Engineering Department, Alexandria University, Alexandria 21544, Egypt, also with Khalifa University, Abu Dhabi, UAE (e-mail: [email protected]).
Publisher Copyright:
© 2010-2012 IEEE.
PY - 2021/10
Y1 - 2021/10
N2 - This paper presents a novel robust current droop controller (RCDC) using a single droop loop. This scheme is unified supporting dual mode of operation for micro-grids (MGs), including grid connected mode (GCM) and islanded mode (ISM) while ensuring seamless transition between the two modes with proportional power sharing maintained. The proposed controller is further incorporated with an improved maximum power point tracking (MPPT) technique presented for the parallel operation of single-stage inverters fed by multi-string PV array topology. In addition, an improved phase-locked-loop-less (PLL-less) method is presented supporting self-synchronization strategy of the parallel operation of PV-inverters with the main grid while maintaining the full capabilities of the unified control architecture. This obviates the usage of conventional PLLs, which are widely used with active synchronization techniques. The performance of the proposed control scheme is validated using real time simulations (RTS) developed by dSPACE MicroLabBox.
AB - This paper presents a novel robust current droop controller (RCDC) using a single droop loop. This scheme is unified supporting dual mode of operation for micro-grids (MGs), including grid connected mode (GCM) and islanded mode (ISM) while ensuring seamless transition between the two modes with proportional power sharing maintained. The proposed controller is further incorporated with an improved maximum power point tracking (MPPT) technique presented for the parallel operation of single-stage inverters fed by multi-string PV array topology. In addition, an improved phase-locked-loop-less (PLL-less) method is presented supporting self-synchronization strategy of the parallel operation of PV-inverters with the main grid while maintaining the full capabilities of the unified control architecture. This obviates the usage of conventional PLLs, which are widely used with active synchronization techniques. The performance of the proposed control scheme is validated using real time simulations (RTS) developed by dSPACE MicroLabBox.
KW - Distributed Generation
KW - MPPT
KW - Self-Synchronization
KW - Smart Grid
KW - Unified Droop Controller
UR - http://www.scopus.com/inward/record.url?scp=85104658527&partnerID=8YFLogxK
U2 - 10.1109/TSTE.2021.3074248
DO - 10.1109/TSTE.2021.3074248
M3 - Article
AN - SCOPUS:85104658527
SN - 1949-3029
VL - 12
SP - 1960
EP - 1973
JO - IEEE Transactions on Sustainable Energy
JF - IEEE Transactions on Sustainable Energy
IS - 4
ER -
