中国电机工程学报2016，Vol.36Issue(17)：4702-4711,10.DOI:10.13334/j.0258-8013.pcsee.151390
基于双dq坐标变换的M3C变换器的数学模型及控制策略研究
Research on Modeling and Control Strategy of Modular Multilevel Matrix Converter Based on Double dq Coordinate Transformation
摘要
Abstract
Modular multilevel matrix converter (M3C) is a new topology of ac/ac power converter, which has very broad application prospects in asynchronous interconnection of high-voltage and high-power systems. Therefore, it’s significant to study mathematical modeling and control strategy of M3C. By implementingαβ0 coordinate transformation in 3 subconverters respectively, it could be found that during symmetry operation the non-zero sequence component of each subconverter was only related to the components of input-side system and the zero sequence component was only related to the output-side components. Based on this conclusion, the paper first implementeddq coordinate transformation not only in the non-zero sequence components but also in the zero sequence components and thereby deduces the mathematical model of M3C underdq axis. The model decoupled two kinds of frequency components and converts them into DC components. The control strategy of the deduced M3C mathematical model was also proposed in this paper. Under this control strategy, all components were of clear physical concept and all controlled variables were dc components during steady state. Therefore, it was easier to ensure the non-error regulation of the control system compared to previous literatures which control M3C underαβ0 axis. The simulation results of M3C in Matlab environment verify the correctness of the mathematical model and superiority of the control strategy.关键词
模块化多电平矩阵式变换器/数学模型/双dq坐标变换/控制策略Key words
modular multilevel matrix converter (M3C)/mathematical model/doubledq coordinate transformation/control strategy分类
信息技术与安全科学引用本文复制引用
孟永庆,王健,李磊,王秀丽,罗辉勇,白森戈..基于双dq坐标变换的M3C变换器的数学模型及控制策略研究[J].中国电机工程学报,2016,36(17):4702-4711,10.基金项目
国家自然科学基金项目(51261130471)。Project Supported by National Natural Science Foundation of China (51261130471) （51261130471）
