TY - GEN
T1 - A novel individual voltage balancing scheme with reduced voltage sensors for modular multilevel cascade converter-single star bridge cell (MMCC-SSBC) based STATCOM
AU - Xiao, Qian
AU - Jin, Yu
AU - Dong, Chaoyu
AU - Hu, Pengfei
AU - Jia, Hongjie
AU - Mu, Yunfei
AU - Chaudhary, Sanjay K.
AU - Teodorescu, Remus
N1 - Funding Information:
This work was supported in part by the National Key Research and Development Foundation of China under Grant (2017YFB0903300), and in part by the National Natural Science Foundation of China under Grant (U1766210, 51625702, and 51807135).
Publisher Copyright:
© 2019 Institution of Engineering and Technology. All rights reserved.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2019
Y1 - 2019
N2 - Capacitor voltage balancing is indispensable in normal operation for modular multilevel cascade converter- single star bridge cell (MMCC-SSBC) based static synchronous compensator (STATCOM). This paper proposes a novel individual voltage balancing scheme with dramatically reduced voltage sensors. First, zero-sequence voltage injection is enabled to regulate the cluster voltage based on only one voltage sensor in each phase; Then, through the additional inserted hardware units, individual voltage balancing can be achieved. Compared with conventional software voltage balancing method, the proposed balancing scheme has the advantage of simple implementation, lower transportation delay, fast balancing speed, and dramatically reduced voltage sensors. In addition, only some popular power modules are added to balance the individual capacitor voltage. The effectiveness of the proposed individual voltage balancing scheme is verified by simulation results in MMCC-SSBC based STATCOM. With the proposed scheme, the individual voltage balancing and reactive power compensation can be realized simultaneously.
AB - Capacitor voltage balancing is indispensable in normal operation for modular multilevel cascade converter- single star bridge cell (MMCC-SSBC) based static synchronous compensator (STATCOM). This paper proposes a novel individual voltage balancing scheme with dramatically reduced voltage sensors. First, zero-sequence voltage injection is enabled to regulate the cluster voltage based on only one voltage sensor in each phase; Then, through the additional inserted hardware units, individual voltage balancing can be achieved. Compared with conventional software voltage balancing method, the proposed balancing scheme has the advantage of simple implementation, lower transportation delay, fast balancing speed, and dramatically reduced voltage sensors. In addition, only some popular power modules are added to balance the individual capacitor voltage. The effectiveness of the proposed individual voltage balancing scheme is verified by simulation results in MMCC-SSBC based STATCOM. With the proposed scheme, the individual voltage balancing and reactive power compensation can be realized simultaneously.
KW - Individual voltage balancing
KW - Modular multilevel cascade converter (MMCC)
KW - Reduced voltage sensors
KW - Single star bridge cell (SSBC)
KW - STATCOM
UR - http://www.scopus.com/inward/record.url?scp=85095973178&partnerID=8YFLogxK
U2 - 10.1049/cp.2019.1180
DO - 10.1049/cp.2019.1180
M3 - Article in proceeding
AN - SCOPUS:85095973178
SN - 978-1-83953-390-7
BT - 2019 Tsinghua International Doctoral Forum
PB - Institution of Engineering and Technology
T2 - 2019 Tsinghua International Doctoral Forum
Y2 - 22 November 2019 through 24 November 2019
ER -