TY - JOUR
T1 - A Self-Synchronized Decentralized Control for Series-Connected H-Bridge Rectifiers
AU - Hou, X.
AU - Sun, Y.
AU - Zhang, X.
AU - Zhang, G.
AU - Lu, J.
AU - Blaabjerg, Frede
PY - 2019/8
Y1 - 2019/8
N2 - This study proposes a decentralized coordination control scheme for series-connected H-bridge rectifiers. Each rectifier module is controlled as a voltage-controlled source by a local controller, which needs only individual information. The local controller is composed of an active power-frequency (P-ω) control and a fixed voltage amplitude control. Compared to the conventional methods based multi-level phase-shifting modulation where centralized controller is needed, the proposed control strategy allows indefinite modular expansion without increasing the computational load of the local controller. Therefore, it has decreased cost and increased scalability. The synchronization mechanism of series modules is analyzed and the stability of the system is proved. The feasibility of the proposed strategy is verified by experimental results.
AB - This study proposes a decentralized coordination control scheme for series-connected H-bridge rectifiers. Each rectifier module is controlled as a voltage-controlled source by a local controller, which needs only individual information. The local controller is composed of an active power-frequency (P-ω) control and a fixed voltage amplitude control. Compared to the conventional methods based multi-level phase-shifting modulation where centralized controller is needed, the proposed control strategy allows indefinite modular expansion without increasing the computational load of the local controller. Therefore, it has decreased cost and increased scalability. The synchronization mechanism of series modules is analyzed and the stability of the system is proved. The feasibility of the proposed strategy is verified by experimental results.
KW - decentralised control
KW - power generation control
KW - rectifiers
KW - synchronisation
KW - voltage control
KW - self-synchronized decentralized control
KW - series-connected H-bridge rectifiers
KW - decentralized coordination control scheme
KW - rectifier module
KW - voltage-controlled source
KW - local controller
KW - fixed voltage amplitude control
KW - multilevel phase-shifting modulation
KW - centralized controller
KW - control strategy
KW - series modules
KW - active power-frequency control
KW - Rectifiers
KW - Voltage control
KW - Impedance
KW - Decentralized control
KW - Reactive power
KW - Steady-state
KW - Synchronization
KW - scalability
KW - self-synchronization
KW - series-connected rectifiers
KW - Decentralized control
KW - scalability
KW - self-synchronization
KW - series-connected rectifiers
UR - http://www.scopus.com/inward/record.url?scp=85062648278&partnerID=8YFLogxK
U2 - 10.1109/TPEL.2019.2896150
DO - 10.1109/TPEL.2019.2896150
M3 - Journal article
SN - 0885-8993
VL - 34
SP - 7136
EP - 7142
JO - IEEE Transactions on Power Electronics
JF - IEEE Transactions on Power Electronics
IS - 8
M1 - 8629935
ER -