面向变速抽蓄的M3C电容电压波动及环流特性建模分析  

Modeling and Analysis of Capacitor Voltage Fluctuation and Circulating Currents Characteristics of M3C for Variable Speed Pumped Storage

作　　者：张明琦 叶宏 梁浩 赵博 王超[1] 王奎[1] ZHANG Mingqi;YE Hong;LIANG Hao;ZHAO Bo;WANG Chao;WANG Kui(State Key Laboratory of Power System Operation and Control(Department of Electrical Engineering,Tsinghua University),Beijing 100084,China;State Grid Xinyuan Company Ltd.,Beijing 100761,China;State Grid Jibei Electric Power Research Institute,Beiing 100045,China;Pumped-storage Technological&Economic Research Institute State Grid Xinyuan Co.,Ltd.,Beijing 100761,China)

机构地区：[1]新型电力系统运行与控制全国重点实验室(清华大学电机系),北京100084 [2]国网新源控股有限公司,北京100761 [3]国网冀北电力有限公司电力科学研究院,北京100045 [4]国网新源控股有限公司抽水蓄能技术经济研究院,北京100761

出　　处：《电气传动》2025年第4期9-17,共9页Electric Drive

基　　金：国家电网有限公司总部科技项目(4000-202343072A-1-1-ZN)。

摘　　要：针对目前模块化多电平矩阵变换器(M3C)中环流分析不够深入、环流频率分量不明确的问题,对M3C子模块电容电压波动、桥臂电压波动和环流的耦合过程进行深入分析,得到M3C环流的一次耦合模型,并得到其所包含的4种主要频率分量,分析结果为使用比例谐振(PR)控制器抑制对应频率分量的环流提供了理论依据。通过实验对环流的理论分析和环流抑制进行验证,实验结果证明了对环流所含频率分量的理论分析的正确性,同时也证明了根据分析结果设计的PR控制器相比P控制器对环流具有更好的抑制作用。Aiming at the problem that the circulating currents analysis of modular multilevel matrix converter(M3C)is not deep enough and the frequency component of circulating currents is not clear,the coupling process of submodule capacitor voltage fluctuation,bridge voltage fluctuation and circulating currents in M3C was deeply analyzed,and the primary coupling model of M3C circulating currents and its four main frequency components were obtained.The analysis results provided a theoretical foundation for using PR controller to suppress the circulating currents of corresponding frequency components.The theoretical analysis and suppression of circulating currents were verified by experiments.The experimental results prove that the theoretical analysis of the frequency components of circulating currents is correct,and it is also proved that the PR controller designed according to the analysis results has better suppression effect on circulating currents than the P controller.

关 键 词：变速抽水蓄能 模块化多电平矩阵变换器 电容电压波动 环流 

分 类 号：TM28[一般工业技术—材料科学与工程]