基于最近电平调制的MMC控制策略研究及仿真  

Control strategy research and simulation for MMC based on NLM

作　　者：赵永[1] 赵艳雷[1] 巩晓[1] 梁世林 

机构地区：[1]山东理工大学电气与电子工程学院,山东淄博255049

出　　处：《山东理工大学学报（自然科学版）》2017年第2期22-26,共5页Journal of Shandong University of Technology:Natural Science Edition

基　　金：山东省自然科学基金项目(ZR2011EEQ025)

摘　　要：模块化多电平换流器(MMC)因其开关耗损小、不依赖于器件串联技术等优势,成为高压大功率变流领域的研究热点.简要分析了基于MMC的最近电平调制(NLM)的原理,在电容电压排序法的基础上提出了上下桥臂电压的平衡控制.在Matlab/Simulink仿真环境下搭建了基于MMC的最近电平逼近调制及其整流的仿真,结果表明最近电平逼近调制方式十分适用于MMC的大功率场合.Modular multilevel converter was hot in the research field of high-voltage power converter, for its advantages of small switching loss, independent device tandem technology. Then, the principles of MMC for the nearest level was briefly analyzed, and the balance control of the upper and lower arms voltage on the basic of the capacitor voltage sequencing method was proposed. The MMC modulation and rectifier based on NLM was simulated by Matlab/Simulink software. And the results showed that NLM method was extremely suitable for large power application.

关 键 词：模块化多电平变流器 最近电平逼近 子模块 电容电压 排序 

分 类 号：TM46[电气工程—电器]