A Novel Fault-Tolerant Control Method for Modular Multilevel Converter with an Improved Phase Disposition Level-Shifted PWM

被引：0
|
作者：
Xiao, Qian [1 ,4 ]
Jin, Yu [2 ,4 ]
Wang, Jinyu [3 ]
Wang, Songda [4 ]
Chen, Linglin [5 ]
Jia, Hongjie [1 ]
Mu, Yunfei [1 ]
Dragicevic, Tomislav [4 ]
Teodorescu, Remus [4 ]
机构：
[1] Tianjin Univ, Minist Educ, Key Lab Smart Grid, Tianjin, Peoples R China
[2] Harbin Inst Technol, Dept Elect Engn & Automat, Harbin, Peoples R China
[3] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore, Singapore
[4] Aalborg Univ, Dept Energy Technol, Aalborg, Denmark
[5] Univ Nottingham, Dept Elect & Elect Engn, Nottingham, England
来源：
45TH ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY (IECON 2019) | 2019年
基金：
中国国家自然科学基金;
关键词：
submodule (SM) fault; fault-tolerant control; modular multilevel converter (MMC); improved phase disposition level-shifted (PD-LS) PWM; virtual voltage;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper proposes a novel fault-tolerant control method for modular multilevel converter (MMC) with an improved level-shifted carrier PWM, based on the concept of virtual voltage. First, an improved phase disposition level-shifted (PD-LS) PWM with only one carrier in each arm is adopted. Then, based on the virtual voltage idea, a simplified control method is proposed to realize fault-tolerant operation without carriers reconfiguration. Compared with traditional fault-tolerant control methods, due to the reduced carriers generation and decreased comparisons between carriers and modulation waves, the modulation process of the proposed scheme can be dramatically simplified during both the pre-fault and the post-fault process. The effectiveness of the proposed method is verified by simulation and experiment results.
引用
收藏
页码：3839 / 3844
页数：6
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