太原理工大学学报2019，Vol.50Issue(1)：36-41,6.DOI:10.16355/j.cnki.issn1007-9432tyut.2019.01.006
改进的最近电平调制策略在模块化多电平变换器中的应用
Modified Nearest Level Modulation for Modular Multilevel Converter
摘要
Abstract
In order to enhance the quality of output voltage of a modular multilevel converter (MMC) with the low amount of submodules, as well as the balance of the upper and lower arms voltage when using nearest-level modulation (NLM), an improved NLM method is adopted.Compared with conventional NLM method, the advantage of proposed method is that it can increase the level number of output voltage from N+1to 2 N+1, reduce the total harmonic distortion (THD) without changing the average voltage of submodules' capacitor and reduce the fluctuation of submodules' capacitor voltage as well as the difference between the upper and lower arms average voltage.Simulation results verified the validity of the proposed method.关键词
模块化多电平变换器/最近电平调制/输出电压质量/桥臂电压均衡Key words
modular multilevel converter (MMC)/nearest level modulation (NLM)/output voltage quality/arm voltage balancing分类
信息技术与安全科学引用本文复制引用
胡文华,董运,张军仁..改进的最近电平调制策略在模块化多电平变换器中的应用[J].太原理工大学学报,2019,50(1):36-41,6.基金项目
国家自然科学基金资助项目(51567009) （51567009）
