Fault Blocking Performance Analysis of Enhanced Flexible Reverse Blocking Multilevel Modular Converter

被引：0
作者：
Yang X. [1 ]
Li Z. [1 ]
Xue Y. [1 ]
Chen B. [1 ]
机构：
[1] School of Electrical Engineering, Beijing Jiaotong University, Beijing
来源：
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2019年 / 34卷 / 12期
关键词：
Bridge damping module; Enhanced; Fault blocking; Flexible reverse blocking sub-module; Modular multilevel converter;
D O I：
10.19595/j.cnki.1000-6753.tces.L80488
中图分类号：
学科分类号：
摘要：
The traditional half-bridge sub-module based modular multilevel converter (HBSM-MMC) cannot block the DC fault current effectively. Thus an enhanced flexible reverse blocking MMC topology (EFRB-MMC) is proposed by improving the HBSMs and adding the bridge damping modules (BDMs). This paper focuses on its fault blocking performance analysis. Both operation principle and fault current limiting mechanism analysis of EFRB-MMC are carried out firstly, and the analytical formula of fault current and clamp voltage are further derived in detail. Moreover, based on the analysis of fault blocking time and device electrical stress, the design principles of key parameters of EFRB-MMC are further proposed. Finally, the simulation results show the effectiveness of the proposed topology. © 2019, Electrical Technology Press Co. Ltd. All right reserved.
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页码：2549 / 2557
页数：8
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