Extended State Observer based Fault Detection and Location Method for Modular Multilevel Converters

被引：0

作者：

Hu, Xing ^{[1
]}

Zhang, Jianzhong ^{[1
]}

Xu, Shuai ^{[1
]}

Hang, Jun ^{[1
]}

机构：

[1] Southeast Univ, Sch Elect Engn, Nanjing, Jiangsu, Peoples R China

来源：

PROCEEDINGS OF THE IECON 2016 - 42ND ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY | 2016年

基金：

美国国家科学基金会;

关键词：

modular multilevel converter; fault diagnosis; extended state observer; modified switching models;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Modular multilevel converter (MMC) is a promising converter in medium and high voltage applications due to its modularity and easiness to meet any voltage level by cascading the sub-modules. However, large amount of modules not only increase the failure probability of the devices, but also increase the difficulty of the fault diagnosis, which have brought a challenging for popularization and application of the MMC. Therefore, an extended state observer based fault diagnosis strategy for MMC is proposed in this paper. The extended state observer is designed based on the circulating current equation. The output of the extended state observer is compared with the theoretical value calculated by the modified switching models to locate the fault. The simulation is modeled and carried out in Matlab/Simulink. The effectiveness of the proposed strategy is verified by the simulation results.

引用

页码：2166 / 2171

页数：6

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