TY - JOUR
T1 - Design and analysis of a transformerless STATCOM based on hybrid cascaded multilevel converter
AU - Hu, Pengfei
AU - Guerrero, Josep M.
AU - He, Zhengxu
PY - 2019/1
Y1 - 2019/1
N2 - This paper presents a new concept of Static Synchronous COMpensator (STATCOM) based on a Hybrid Cascaded Multilevel Converter (HCMC). The HCMC consists of a two- level voltage converter and a wave-shaping circuit formed by cascaded H-bridge Sub-Modules (SM). Firstly, the operation principle and overall control strategy of HCMC are presented. After that, some key parameters including size of capacitors, numbers of sub-modules are in-depth analyzed. And then, a thorough comparison between the proposed HCMC-based STATCOM and conventional cascaded H-bridge based STATCOM is made, which turns out that the proposed HCMC-based STATCOM requires less number, size and stored energy of capacitors and has less power loss. Finally, a 35 kV/±50 Mvar HCMC-based STATCOM simulation model is constructed in PSCAD/EMTDC software platform. The simulation results validate the feasibility of the proposed HCMC-based STATCOM and the correctness of the analysis.
AB - This paper presents a new concept of Static Synchronous COMpensator (STATCOM) based on a Hybrid Cascaded Multilevel Converter (HCMC). The HCMC consists of a two- level voltage converter and a wave-shaping circuit formed by cascaded H-bridge Sub-Modules (SM). Firstly, the operation principle and overall control strategy of HCMC are presented. After that, some key parameters including size of capacitors, numbers of sub-modules are in-depth analyzed. And then, a thorough comparison between the proposed HCMC-based STATCOM and conventional cascaded H-bridge based STATCOM is made, which turns out that the proposed HCMC-based STATCOM requires less number, size and stored energy of capacitors and has less power loss. Finally, a 35 kV/±50 Mvar HCMC-based STATCOM simulation model is constructed in PSCAD/EMTDC software platform. The simulation results validate the feasibility of the proposed HCMC-based STATCOM and the correctness of the analysis.
KW - Control strategy
KW - Hybrid Cascaded Multilevel Converter (HCMC)
KW - Sizing of capacitor
KW - Static Synchronous COMpensator (STATCOM)
UR - http://www.scopus.com/inward/record.url?scp=85050728486&partnerID=8YFLogxK
U2 - 10.1016/j.ijepes.2018.07.059
DO - 10.1016/j.ijepes.2018.07.059
M3 - Journal article
AN - SCOPUS:85050728486
SN - 0142-0615
VL - 104
SP - 694
EP - 704
JO - International Journal of Electrical Power and Energy Systems
JF - International Journal of Electrical Power and Energy Systems
ER -