Title :
Power module voltage balancing method for a ±350 kV/ 1000 MW modular multilevel converter
Author :
Zixin Li;Fanqiang Gao;Fei Xu;Zunfang Chu;Ping Wang;Yaohua Li
Author_Institution :
Key Laboratory of Power Electronics and Electric Drive, Institute of Electrical Engineering, Chinese Academy of Sciences, No. 6 Beiertiao, Zhongguancun, Haidian District, Beijing, China
Abstract :
In this paper, a power module capacitor voltage balancing method is presented for a ±350 kV/ 1000 MW modular multilevel converter (MMC) oriented for a back-to-back grid interconnecting project. In this method, a Balancing Adjusting Number (BAN) is proposed to adjust the voltage balancing effect and the switching frequency of the power modules. An accurate switching frequency calculation method is also presented. Verification results show the effectiveness of the proposed voltage balancing method and the correctness of the switching frequency calculation method.
Keywords :
"Switches","Switching frequency","Capacitors","Voltage control","Insulated gate bipolar transistors","Converters"
Conference_Titel :
Power Electronics and Applications (EPE´15 ECCE-Europe), 2015 17th European Conference on
DOI :
10.1109/EPE.2015.7309195
