M3C谐波环流分析及抑制策略研究  

Research on Analysis and Suppression Strategies of M 3C Harmonic Circulation

作　　者：丁宇 刘沈全 王钢[1] Ding Yu;Liu Shenquan;Wang Gang(School of Electric Power Engineering,South China University of Technology,Guangzhou Guangdong 510641,China)

机构地区：[1]华南理工大学电力学院,广东广州510641

出　　处：《电气自动化》2025年第1期99-101,共3页Electrical Automation

摘　　要：模块化多电平矩阵变换器(modular multilevel matrix converter,M3C)存在谐波抑制问题。为了降低谐波对M3C稳定运行的影响,通过建立M3C双基频纹波、谐波模型,分析其耦合机理,建立了谐波环流近似模型;基于比例控制器对谐波环流进行抑制,通过仿真对近似模型以及谐波抑制效果进行验证。结果表明,谐波环流主要含2ω_(S)+ω_(L)、2ω_(S)-ω_(L)、ω_(S)+2ω_(L)和ω_(S)-2ω_(L)这四种频率分量,所建谐波环流近似模型具有较高精度,谐波抑制策略效果显著,近似模型与谐波抑制策略具有精确性和有效性。The modular multilevel matrix converter(M 3C)has harmonic suppression issues.In order to reduce the impact of harmonics on the stable operation of M 3C,a dual fundamental ripple and harmonic model of M 3C was established,and its coupling mechanism was analyzed.An approximate model of harmonic circulation was established,and a proportional controller was used to suppress harmonic circulation.The results show that the harmonic circulation mainly consists of four frequency components:2ω_(S)+ω_(L),2ω_(S)-ω_(L),ω_(S)+2ω_(L)andω_(S)-2ω_(L).The proposed approximate harmonic circulation model has high precision and the harmonic suppression strategy is effective.

关 键 词：模块化多电平矩阵变换器 分频输电系统 电容电压纹波 谐波分析 谐波环流抑制 

分 类 号：TM46[电气工程—电器]