TY - GEN
T1 - Stabilization of the DC-link voltage in a two stage cascaded H-Bridge multilevel converter for battery energy storage systems
AU - Lahlou, Taha
AU - Wittmann, Daniel
AU - Abdelrahem, Mohamed
AU - Herzog, Hans Georg
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2016/7/14
Y1 - 2016/7/14
N2 - Multilevel converters and battery energy storage systems are key components in present and future medium and low voltage grids. Cascaded H-bridge multilevel converters offer the capability of embedding such energy storage units in a split manner, given the existence of several submodules operating at lower voltages. This paper presents a two stage cascaded multilevel converter with bidirectional buck/boost DC-DC converters as a charge/discharge unit for energy storage applications. A control algorithm for the DC-DC converters is proposed for balancing the batteries state of charges and reducing the DC-link voltage fluctuation under all operation conditions. Moreover, a vector control system is proposed for regulating the active and reactive power exchange between the grid and the cascaded multilevel converter. The performance of the proposed system is illustrated via simulation results.
AB - Multilevel converters and battery energy storage systems are key components in present and future medium and low voltage grids. Cascaded H-bridge multilevel converters offer the capability of embedding such energy storage units in a split manner, given the existence of several submodules operating at lower voltages. This paper presents a two stage cascaded multilevel converter with bidirectional buck/boost DC-DC converters as a charge/discharge unit for energy storage applications. A control algorithm for the DC-DC converters is proposed for balancing the batteries state of charges and reducing the DC-link voltage fluctuation under all operation conditions. Moreover, a vector control system is proposed for regulating the active and reactive power exchange between the grid and the cascaded multilevel converter. The performance of the proposed system is illustrated via simulation results.
KW - CHB
KW - DC-link voltage control
KW - battery energy storage system
KW - bidirectional DC-DC converter
KW - cascaded multilevel converter
KW - vector control
UR - http://www.scopus.com/inward/record.url?scp=84980425299&partnerID=8YFLogxK
U2 - 10.1109/ENERGYCON.2016.7513908
DO - 10.1109/ENERGYCON.2016.7513908
M3 - Conference contribution
AN - SCOPUS:84980425299
T3 - 2016 IEEE International Energy Conference, ENERGYCON 2016
BT - 2016 IEEE International Energy Conference, ENERGYCON 2016
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2016 IEEE International Energy Conference, ENERGYCON 2016
Y2 - 4 April 2016 through 8 April 2016
ER -