中国电机工程学报Issue(1)：167-176,10.DOI:10.13334/j.0258-8013.pcsee.2015.01.021
模块化多电平变换器的系统状态方程及等效模型
The System State Equation and Equivalent Model of Modular Multilevel Converters
摘要
Abstract
Applications of the modular multilevel converter (MMC) in the mid- and high voltage places have received extensive attention, but the numerous sub-modules bring difficulties for the analysis. In this paper, assuming the system is continuous and ideal, the system state equations of single phase are deduced about the four variables as the circulating current, the load current, the sum and the difference of the capacitor voltages between the positive and the negative legs in a phase. Based on the system state equations, the system equivalent model is established, which makes the physical relationship among the variables of the system become very clear. And then, effects of the dead time and the IGBT saturation voltage drop on the system are analyzed to improve the equivalent model, and the corresponding s-domain model is presented that can be used for simulation study of the MMC. Finally, simulation and experimental results confirm the accuracy of the proposed model.关键词
模块化多电平变换器/状态方程/等效模型/死区/IGBT饱和压降Key words
modular multilevel converter (MMC)/state equation/equivalent model/dead time/IGBT saturation voltage drop分类
信息技术与安全科学引用本文复制引用
陈耀军,陈柏超,田翠华,袁佳歆..模块化多电平变换器的系统状态方程及等效模型[J].中国电机工程学报,2015,(1):167-176,10.基金项目
国家自然科学基金项目(50807041)。Project Supported by National Natural Science Foundation of China (50807041) （50807041）
