TY - GEN
T1 - Research on the Unbalanced Compensation Range of Delta-connected Cascaded H-bridge Multilevel SVG
AU - Luo, Rui
AU - He, Yingjie
AU - Tu, Yiming
AU - Chen, Xingxing
AU - Liu, Jinjun
N1 - Publisher Copyright:
© 2018 IEEJ Industry Application Society.
PY - 2018/10/22
Y1 - 2018/10/22
N2 - Delta-connected cascaded H-bridge multilevel SVG can compensate the reactive and negative-sequence current synthetically and it is one of the most effective solutions for improving power quality in high-voltage and large-power applications. Focusing on the dc-link voltage control problems for SVG under unbalanced conditions, the asymmetric active powers between three-phase clusters produced by line voltages and phase currents are analyzed and the expression of zero-sequence current for cluster voltage control is also derived on this paper. On the basis of this, the quantitative relationship between the unbalance degree of the supply voltage, the unbalance degree of the compensation current and the compensation ability is analyzed. Finally, the correctness of the relevant theoretical analysis is verified by simulation. These quantitative analyses have directive significance for the application and selection of the delta-connected cascaded H-bridge multilevel SVG.
AB - Delta-connected cascaded H-bridge multilevel SVG can compensate the reactive and negative-sequence current synthetically and it is one of the most effective solutions for improving power quality in high-voltage and large-power applications. Focusing on the dc-link voltage control problems for SVG under unbalanced conditions, the asymmetric active powers between three-phase clusters produced by line voltages and phase currents are analyzed and the expression of zero-sequence current for cluster voltage control is also derived on this paper. On the basis of this, the quantitative relationship between the unbalance degree of the supply voltage, the unbalance degree of the compensation current and the compensation ability is analyzed. Finally, the correctness of the relevant theoretical analysis is verified by simulation. These quantitative analyses have directive significance for the application and selection of the delta-connected cascaded H-bridge multilevel SVG.
KW - Delta-connected cascaded H-bridge multilevel SVG
KW - unbalance degree
KW - zero-sequence current
UR - https://www.scopus.com/pages/publications/85057326330
U2 - 10.23919/IPEC.2018.8507702
DO - 10.23919/IPEC.2018.8507702
M3 - 会议稿件
AN - SCOPUS:85057326330
T3 - 2018 International Power Electronics Conference, IPEC-Niigata - ECCE Asia 2018
SP - 3439
EP - 3444
BT - 2018 International Power Electronics Conference, IPEC-Niigata - ECCE Asia 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 8th International Power Electronics Conference, IPEC-Niigata - ECCE Asia 2018
Y2 - 20 May 2018 through 24 May 2018
ER -