单相H桥型MMC直接功率控制策略研究
针对模块化多电平换流器（Modular Multilevel Converter,MMC）的研究主要集中在三相系统,很少有文献对单相MMC展开分析研究。文章分析了一种单相H桥型MMC的拓扑结构,建立其数学模型;通过构造和实际交流量成正交关系的虚拟交流量,提出一种基于αβ坐标系的直接功率控制（Direct Power Control,DPC）策略;单相MMC桥臂电流中的二次分量将流入直流侧,为此利用准比例谐振控制器设计环流抑制器;最后在PSCAD/EMTDC中搭建仿真模型,结果验证了所提出控制策略的有效性。...
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| Published in | 电测与仪表 Vol. 53; no. 5; pp. 42 - 46 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
华东交通大学 电气与电子工程学院,南昌,330013
2016
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1001-1390 |
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| Summary: | 针对模块化多电平换流器（Modular Multilevel Converter,MMC）的研究主要集中在三相系统,很少有文献对单相MMC展开分析研究。文章分析了一种单相H桥型MMC的拓扑结构,建立其数学模型;通过构造和实际交流量成正交关系的虚拟交流量,提出一种基于αβ坐标系的直接功率控制（Direct Power Control,DPC）策略;单相MMC桥臂电流中的二次分量将流入直流侧,为此利用准比例谐振控制器设计环流抑制器;最后在PSCAD/EMTDC中搭建仿真模型,结果验证了所提出控制策略的有效性。 |
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| Bibliography: | At present,the research of modular multilevel converter（ MMC） mainly concentrated in the three-phase system,but a little literature on single phase MMC. This paper analyzes the topology structure of a single-phase H bridge MMC（ SPH-MMC）,and establishes its mathematical model. By constructing a virtual component which is orthogonal relation between the actual ac components,a direct power control strategy（ DPC） based on αβ coordinates for SPH-MMC is proposed in this paper. The double frequency component of arm currents would flow into DC side,so a circulating current suppressing controller based on quasi proportional-resonant controller was designed. Finally,a simulation model of SPH-MMC was built in PSCAD / EMTDC to verify the proposed controller. The results show that the proposed control strategy is effective. 23-1202/TH modular multilevel converter（MMC）; single-phase H-bridge; direct power control（DPC）; quasi proportional-resonant controller; circulating current suppression Song Pinggang, Wu Jizhen, Lin Jiaton |
| ISSN: | 1001-1390 |