TY - JOUR
T1 - Unbalanced Active Power Distribution of Cascaded Multilevel Converter-Based Battery Energy Storage Systems Gobble
AU - Liang, Gaowen
AU - Farivar, Glen G.
AU - Ceballos, Salvador
AU - Tafti, Hossein Dehghani
AU - Pou, Josep
AU - Townsend, Christopher D.
AU - Konstantinou, Georgios
N1 - Publisher Copyright:
© 1982-2012 IEEE.
PY - 2022/12/1
Y1 - 2022/12/1
N2 - In a battery energy storage system (BESS) based on the cascaded H-bridge (CHB) converter or modular multilevel converter (MMC), the active power distribution among the submodules (SMs) can be highly unbalanced, especially when batteries with different power ratings are used. Meanwhile, there are certain limits for the unbalanced power distribution among the SMs. It is a challenge to determine whether the active power distribution is viable for cascaded multilevel converters with unequal capacitor voltages because the complexity grows exponentially as the number of SMs increases. This article proposes a generalized analytic solution to this problem, which reduces the complexity significantly and is readily applicable to converters with large number of SMs. The validity of this method is proved theoretically and verified with simulation and experimental results on both the MMC and CHB converter.
AB - In a battery energy storage system (BESS) based on the cascaded H-bridge (CHB) converter or modular multilevel converter (MMC), the active power distribution among the submodules (SMs) can be highly unbalanced, especially when batteries with different power ratings are used. Meanwhile, there are certain limits for the unbalanced power distribution among the SMs. It is a challenge to determine whether the active power distribution is viable for cascaded multilevel converters with unequal capacitor voltages because the complexity grows exponentially as the number of SMs increases. This article proposes a generalized analytic solution to this problem, which reduces the complexity significantly and is readily applicable to converters with large number of SMs. The validity of this method is proved theoretically and verified with simulation and experimental results on both the MMC and CHB converter.
KW - Battery energy storage
KW - cascaded H-bridge (CHB)
KW - modular multilevel converter (MMC)
KW - power distribution
UR - http://www.scopus.com/inward/record.url?scp=85122325652&partnerID=8YFLogxK
U2 - 10.1109/TIE.2021.3137442
DO - 10.1109/TIE.2021.3137442
M3 - Article
AN - SCOPUS:85122325652
SN - 0278-0046
VL - 69
SP - 13022
EP - 13032
JO - IEEE Transactions on Industrial Electronics
JF - IEEE Transactions on Industrial Electronics
IS - 12
ER -
