文献类型：期刊文献

英文题名：Multilevel converter with capacitor voltage actively balanced using reduced number of voltage sensors for high power applications

作者：Gao, Congzhe[1];Liu, Xiangdong[1];Liu, Jingyun[2];Guo, Youguang[3];Chen, Zhen[1]

第一作者：Gao, Congzhe

通讯作者：Gao, CZ[1]

机构：[1]Beijing Inst Technol, Sch Automat, Beijing 100081, Peoples R China;[2]Beijing Union Univ, Coll Automat, Beijing 100101, Peoples R China;[3]Univ Technol Sydney, Sch Elect Mech & Mechatron Syst, Sydney, NSW 2007, Australia

第一机构：Beijing Inst Technol, Sch Automat, Beijing 100081, Peoples R China

通讯机构：[1]corresponding author), Beijing Inst Technol, Sch Automat, Beijing 100081, Peoples R China.

年份：2016

卷号：9

期号：7

起止页码：1462-1473

外文期刊名：IET POWER ELECTRONICS

收录：;EI(收录号：20162302478696);Scopus(收录号：2-s2.0-84971613883);WOS:【SCI-EXPANDED(收录号:WOS:000377079700015)】；

基金：This work was supported by the National Natural Science Foundations of China (grant nos. 51347009 and 51207010).

语种：英文

外文关键词：Pulse width modulation - Topology - Voltage control

摘要：Capacitor voltage balance control has attracted increasing attention in the studies of cascaded multilevel converters and modular multilevel converters. This study proposes a novel multilevel converter topology based on diode clamped half-bridge cascaded converter for medium/high voltage and high power applications. In this converter, capacitor voltage balancing using clamping diodes is achieved. Thus very little capacitor voltage control code has to be executed by the digital controller. Furthermore, only two voltage sensors are required for the capacitor voltage control, and the control scheme can be designed as simple as that of a two-level converter. The phase shifted pulse width modulation (PWM) method is employed for the converter, and a control strategy for the converter utilised as a static Var generator is presented. The proposed converter and control strategy were simulated with PSIM. Experiments were also carried out with a laboratory prototype. Results showed that the proposed converter topology with capacitor voltage balancing could work effectively. The applied PWM and control method were also validated.