模块化多电平换流器子模块故障仿真与诊断  

Fault simulation and diagnosis for submodule of modular multilevel converter

作　　者：苏雪婷[1] 刘振兴[1] 

机构地区：[1]武汉科技大学信息科学与工程学院,湖北武汉430081

出　　处：《武汉科技大学学报》2016年第4期302-308,共7页Journal of Wuhan University of Science and Technology

基　　金：国家自然科学基金资助项目(61174107)

摘　　要：分析了模块化多电平换流器(MMC)的工作原理和故障特性,搭建了基于MATLAB/Simulink的五电平MMC故障仿真平台,对子模块中IGBT器件的开路、短路和高阻等故障状态进行模拟,总结出发生不同故障时输出直流电压、子模块电容电压和交流侧三相电流的变化特征,可为MMC故障诊断与故障模块定位提供参考。This paper analyzes the working principle and fault characteristics of modular multilevel converter（MMC）and builds a five-level MMC fault simulation platform based on MATLAB/Simulink.Open circuit,short circuit and high impedance faults of IGBT devices in a submodule are simulated,and the variation patterns of output DC voltage,capacitance voltages of sub-modules and three-phase AC currents when IGBT has different faults are summarized,which provides the reference for MMC fault diagnosis and location.

关 键 词：模块化多电平换流器 子模块 故障诊断 绝缘栅双极型晶体管 MATLAB/SIMULINK 

分 类 号：TM72[电气工程—电力系统及自动化]