MMC DC Fault Current Self-cleaning Strategy Based on Diode Reverse Blocking Double Sub-module

MA Wenzhong; WANG Xiao; SUN Yingxin; LIU Yong; ZHAO Huafang; WANG Yubin

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MMC DC Fault Current Self-cleaning Strategy Based on Diode Reverse Blocking Double Sub-module

更新时间：2025-12-08

- MMC DC Fault Current Self-cleaning Strategy Based on Diode Reverse Blocking Double Sub-module
- Vol. 44, Issue 7, Pages: 2143-2149(2018)
- 作者机构：
  
  1. 中国石油大学(华东)信息与控制工程学院
  2. 国网山东省电力公司潍坊供电公司
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published Online：30 July 2018，
  
  Published：2018
- 稿件说明：
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MA Wenzhong, WANG Xiao, SUN Yingxin, et al. MMC DC Fault Current Self-cleaning Strategy Based on Diode Reverse Blocking Double Sub-module[J]. 2018, 44(7): 2143-2149.
DOI：

MA Wenzhong, WANG Xiao, SUN Yingxin, et al. MMC DC Fault Current Self-cleaning Strategy Based on Diode Reverse Blocking Double Sub-module[J]. 2018, 44(7): 2143-2149. DOI：

摘要

针对传统半桥子模块无法实现直流故障电流阻断功能的问题

设计了一种二极管钳位逆阻型双子模块结构（D-RBSM）。在详细分析该子模块的直流故障清除机制

并与其他拓扑结构进行经济效益对比后

通过在MATLAB/Simulink环境下搭建仿真模型对该子模块拓扑的正确性和有效性进行验证。结果表明

二极管钳位逆阻型MMC能够实现对直流故障电流的闭锁

同时可有效降低RB-IGBT对触发脉冲同时性的严格要求

提高系统的安全系数。

Abstract

Modular multilevel converter（MMC） has been widely used in high-voltage direct-current（HVDC） transmission systems with its excellent characteristics. To solve the problem that the half-bridge sub-module is unable to block dc fault current

we designed a diode reverse blocking double sub-module（D-RBSM）. The DC fault clearing mechanism of the sub-module was analyzed in detail

and the economic benefit was compared with that of other topologies. Finally

the correctness and validity of the sub-module topology ware verified by building a simulation model in MATLAB/Simulink environment. The results show that the D-RBSM-MMC can realize the blocking of DC fault current. At the same time

it can effectively reduce the strict trigger pulse synchronization requirements of RB-IGBT and improve the safety factor of the system.

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