TY - GEN
T1 - Control strategy study of STATCOM based on cascaded PWM H-bridge converter with delta configuration
AU - Du, Sixing
AU - Liu, Jinjun
AU - Lin, Jiliang
AU - He, Yingjie
PY - 2012
Y1 - 2012
N2 - This paper describes a transformerless static synchronous compensator (STATCOM) system based on cascaded pulse-width-modulation (PWM) H-Bridge converter with delta configuration. It is intend for dynamically compensating reactive power and negative-sequence load current, as well as for improving power quality and reliability of power distribution system. In this paper, attention is paid to reactive-power control, negative-sequence current compensation, along with voltage-balancing control consisting of clustered balancing control and individual balancing control. Clustered balancing control that keeps the dc voltage of each cluster equal to the dc mean value of all the three clusters is achieved by introducing a zero-sequence current flowing through the loop of the three delta-connected clusters in three phases. The aim of this control scheme is to fully extend power-quality- improving capability of STATCOM system. A 100-V 3-kVA downscaled laboratory system is designed, constructed and tested, using large-capacity electrolytic capacitors as dc-voltage sources. Experimental results obtained from the laboratory system verify the viability of this cascaded multilevel PWM STATCOM system.
AB - This paper describes a transformerless static synchronous compensator (STATCOM) system based on cascaded pulse-width-modulation (PWM) H-Bridge converter with delta configuration. It is intend for dynamically compensating reactive power and negative-sequence load current, as well as for improving power quality and reliability of power distribution system. In this paper, attention is paid to reactive-power control, negative-sequence current compensation, along with voltage-balancing control consisting of clustered balancing control and individual balancing control. Clustered balancing control that keeps the dc voltage of each cluster equal to the dc mean value of all the three clusters is achieved by introducing a zero-sequence current flowing through the loop of the three delta-connected clusters in three phases. The aim of this control scheme is to fully extend power-quality- improving capability of STATCOM system. A 100-V 3-kVA downscaled laboratory system is designed, constructed and tested, using large-capacity electrolytic capacitors as dc-voltage sources. Experimental results obtained from the laboratory system verify the viability of this cascaded multilevel PWM STATCOM system.
KW - Cascade multilevel converter
KW - compensating unbalanced load
KW - reactive power
KW - STATCOM
KW - voltage balancing control
UR - https://www.scopus.com/pages/publications/84866779028
U2 - 10.1109/IPEMC.2012.6258870
DO - 10.1109/IPEMC.2012.6258870
M3 - 会议稿件
AN - SCOPUS:84866779028
SN - 9781457720864
T3 - Conference Proceedings - 2012 IEEE 7th International Power Electronics and Motion Control Conference - ECCE Asia, IPEMC 2012
SP - 345
EP - 350
BT - Conference Proceedings - 2012 IEEE 7th International Power Electronics and Motion Control Conference - ECCE Asia, IPEMC 2012
T2 - 2012 IEEE 7th International Power Electronics and Motion Control Conference - ECCE Asia, IPEMC 2012
Y2 - 2 June 2012 through 5 June 2012
ER -