TY - JOUR
T1 - Predictive Control of Cascaded H-Bridge Converters under Unbalanced Power Generation
AU - Aguilera, Ricardo P.
AU - Acuna, Pablo
AU - Yu, Yifan
AU - Konstantinou, Georgios
AU - Townsend, Christopher D.
AU - Wu, Bin
AU - Agelidis, Vassilios G.
PY - 2017/1/1
Y1 - 2017/1/1
N2 - This paper presents a predictive control strategy for grid-connected cascaded H-bridge (CHB) converters under unbalanced power generation among each converter phase. The proposed controller belongs to the finite-control-set model predictive control (FCS-MPC) family and is designed to extract unbalanced power from each CHB converter phase while providing balanced power to the grid. The key novelty of this strategy lies in the way the unbalanced power generation among the phases is explicitly considered into the optimal control problem. Power balance is achieved by enforcing the CHB converter to work with a suitable zero-sequence voltage component. The proposed predictive controller is directly formulated in the original abc-framework to account for the common-mode voltage. Simulation and experimental results are provided to verify the effectiveness of the proposed FCS-MPC strategy.
AB - This paper presents a predictive control strategy for grid-connected cascaded H-bridge (CHB) converters under unbalanced power generation among each converter phase. The proposed controller belongs to the finite-control-set model predictive control (FCS-MPC) family and is designed to extract unbalanced power from each CHB converter phase while providing balanced power to the grid. The key novelty of this strategy lies in the way the unbalanced power generation among the phases is explicitly considered into the optimal control problem. Power balance is achieved by enforcing the CHB converter to work with a suitable zero-sequence voltage component. The proposed predictive controller is directly formulated in the original abc-framework to account for the common-mode voltage. Simulation and experimental results are provided to verify the effectiveness of the proposed FCS-MPC strategy.
KW - Cascaded H-bridge (CHB) converters
KW - controller performance
KW - dc-ac power converters
KW - finite control set
KW - model predictive control (MPC)
KW - multilevel converters (MCs)
KW - photovoltaics
KW - power quality
KW - smart grids
UR - http://www.scopus.com/inward/record.url?scp=85019003985&partnerID=8YFLogxK
U2 - 10.1109/TIE.2016.2605618
DO - 10.1109/TIE.2016.2605618
M3 - Article
AN - SCOPUS:85019003985
VL - 64
SP - 4
EP - 13
JO - IEEE Transactions on Industrial Electronics
JF - IEEE Transactions on Industrial Electronics
SN - 0278-0046
IS - 1
ER -