TY - JOUR
T1 - Distributed Power Reserve Control in Grid-Connected Cascaded H-Bridge Converter-Based Photovoltaic Systems
AU - Haghighat, Mina
AU - Tafti, Hossein Dehghani
AU - Gholipour, Mehdi
AU - Niroomand, Mehdi
AU - Townsend, Christopher D.
AU - Barajas, Nestor Vazquez
AU - Liang, Gaowen
AU - Konstantinou, Georgios
AU - Pou, Josep
N1 - Publisher Copyright:
© 2013 IEEE.
PY - 2024/11/22
Y1 - 2024/11/22
N2 - Grid-connected photovoltaic (PV) systems enhance grid stability during frequency fluctuations by adopting power reserve control (PRC) and contributing to frequency regulation. The cascaded H-bridge (CHB) converter is a suitable choice for large-scale photovoltaic systems. This paper introduces a distributed PRC strategy designed for CHB-based PV systems, necessitating minimal inter-module communication and thus simplifying implementation. Each submodule (SM) within the CHB converter periodically engages in maximum power point tracking to assess the system’s total accessible PV power. Through coordinated control, the strategy evenly allocates the necessary power across sub-modules based on their PV power availability, offering a balanced power distribution while acknowledging operational constraints on power disparity among SMs. Simulation and experimental results confirm the efficiency of the proposed approach under various conditions, showcasing accurate PV power estimation, seamless transition between operating modes, fast dynamic response, and regulation of the dc-link voltages.
AB - Grid-connected photovoltaic (PV) systems enhance grid stability during frequency fluctuations by adopting power reserve control (PRC) and contributing to frequency regulation. The cascaded H-bridge (CHB) converter is a suitable choice for large-scale photovoltaic systems. This paper introduces a distributed PRC strategy designed for CHB-based PV systems, necessitating minimal inter-module communication and thus simplifying implementation. Each submodule (SM) within the CHB converter periodically engages in maximum power point tracking to assess the system’s total accessible PV power. Through coordinated control, the strategy evenly allocates the necessary power across sub-modules based on their PV power availability, offering a balanced power distribution while acknowledging operational constraints on power disparity among SMs. Simulation and experimental results confirm the efficiency of the proposed approach under various conditions, showcasing accurate PV power estimation, seamless transition between operating modes, fast dynamic response, and regulation of the dc-link voltages.
KW - Cascaded H-bridge converter
KW - distributed control
KW - flexible power point tracking
KW - photovoltaic systems
KW - power reserve control
UR - http://www.scopus.com/inward/record.url?scp=85210315533&partnerID=8YFLogxK
U2 - 10.1109/ACCESS.2024.3496518
DO - 10.1109/ACCESS.2024.3496518
M3 - Article
AN - SCOPUS:85210315533
SN - 2169-3536
VL - 12
SP - 168568
EP - 168580
JO - IEEE Access
JF - IEEE Access
ER -
