基于准比例谐振控制的模块化多电平矩阵变换器环流抑制策略

TM461%TM464; 模块化多电平矩阵变换器(M3C)是分频输电系统中的核心装置.由于缺乏直流环节,所以不同频率的电气量在M3C内部直接耦合,导致M3C内部出现非常复杂的谐波,造成子模块均压困难,影响M3C的稳定运行.提出一种基于准比例谐振(PR)控制器的闭环控制策略,实现对M3C内部环流的抑制.首先,研究稳态时子模块电容纹波电压,详细分析子模块纹波电压与开关函数耦合产生谐波电流的机理,推导谐波环流的解析式,指出抑制环流的必要性.然后,针对4种频率成分的谐波环流设计并联的准PR环流抑制器,在抑制环流的同时减少桥臂电流的畸变,保障桥臂间电容电压均衡并且具备良好的动态性能.最后,在MATLAB...

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Published in上海交通大学学报 Vol. 59; no. 2; pp. 242 - 后插2
Main Authors 姜亚峰, 李仪博, 吴秋伟, 刘沈全, 吴小丹, 周前
Format Journal Article
LanguageChinese
Published 清华大学清华深圳国际研究生院,广东 深圳 518055%华南理工大学电力学院,广州 510641%南京南瑞继保电气有限公司,南京 211102%国网江苏省电力有限公司电力科学研究院,南京 211103 28.02.2025
山东大学电气工程学院,济南 250061%清华大学清华伯克利深圳学院,广东 深圳 518055
Subjects
modular multilevel matrix converter(M3C)
fractional frequency transmission system
quasi-proportional resonance(PR)control
circulating current suppression
模块化多电平矩阵变换器
准比例谐振控制
分频输电系统
环流抑制
capaci-tors ripple voltage
电容纹波电压
Online AccessGet full text
ISSN1006-2467
DOI10.16183/j.cnki.jsjtu.2023.193

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Abstract TM461%TM464; 模块化多电平矩阵变换器(M3C)是分频输电系统中的核心装置.由于缺乏直流环节,所以不同频率的电气量在M3C内部直接耦合,导致M3C内部出现非常复杂的谐波,造成子模块均压困难,影响M3C的稳定运行.提出一种基于准比例谐振(PR)控制器的闭环控制策略,实现对M3C内部环流的抑制.首先,研究稳态时子模块电容纹波电压,详细分析子模块纹波电压与开关函数耦合产生谐波电流的机理,推导谐波环流的解析式,指出抑制环流的必要性.然后,针对4种频率成分的谐波环流设计并联的准PR环流抑制器,在抑制环流的同时减少桥臂电流的畸变,保障桥臂间电容电压均衡并且具备良好的动态性能.最后,在MATLAB/Simulink中搭建仿真模型,通过仿真验证控制策略的有效性.
AbstractList TM461%TM464; 模块化多电平矩阵变换器(M3C)是分频输电系统中的核心装置.由于缺乏直流环节,所以不同频率的电气量在M3C内部直接耦合,导致M3C内部出现非常复杂的谐波,造成子模块均压困难,影响M3C的稳定运行.提出一种基于准比例谐振(PR)控制器的闭环控制策略,实现对M3C内部环流的抑制.首先,研究稳态时子模块电容纹波电压,详细分析子模块纹波电压与开关函数耦合产生谐波电流的机理,推导谐波环流的解析式,指出抑制环流的必要性.然后,针对4种频率成分的谐波环流设计并联的准PR环流抑制器,在抑制环流的同时减少桥臂电流的畸变,保障桥臂间电容电压均衡并且具备良好的动态性能.最后,在MATLAB/Simulink中搭建仿真模型,通过仿真验证控制策略的有效性.
Abstract_FL Modular multilevel matrix converter(M3C)is the core device of the fractional frequency transmission system.Due to the lack of direct current link,the electrical quantities of different frequencies are directly coupled inside the M3C,resulting in a complex harmonic condition,which makes it difficult to balance the capacitor voltage of the sub-module and affects the stable operation of the M3C.In this paper,a closed-loop control strategy based on quasi-proportional resonance(PR)controller is proposed to suppress the internal circulation of the M3C.First,the ripple voltage of the sub-module capacitor in steady state is studied.The mechanism of harmonic current generated by the coupling of sub-module ripple voltage and switching function is analyzed in detail.The analytical formula of harmonic circulating current is derived,and the necessity of suppressing the circulating current is pointed out.Then,a parallel quasi-PR circulation suppressor is designed for the harmonic circulation of four frequency components,which reduces the distortion of the bridge arm current while suppressing the circulating current,ensures the capacitor voltage balance between the bridge arms with a good dynamic performance.Finally,a simulation model is built in MATLAB/Simulink and the effectiveness of the control strategy is validated by simulation.
Author 姜亚峰
刘沈全
吴小丹
李仪博
吴秋伟
周前
AuthorAffiliation 山东大学电气工程学院,济南 250061%清华大学清华伯克利深圳学院,广东 深圳 518055;清华大学清华深圳国际研究生院,广东 深圳 518055%华南理工大学电力学院,广州 510641%南京南瑞继保电气有限公司,南京 211102%国网江苏省电力有限公司电力科学研究院,南京 211103
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LI Yibo
JIANG Yafeng
WU Qiuwei
ZHOU Qian
LIU Shenquan
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DocumentTitle_FL Circulating Current Suppression Strategy of Modular Multilevel Matrix Converter Based on Quasi-Proportional Resonant Control
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Keywords modular multilevel matrix converter(M3C)
fractional frequency transmission system
quasi-proportional resonance(PR)control
circulating current suppression
模块化多电平矩阵变换器
准比例谐振控制
分频输电系统
环流抑制
capaci-tors ripple voltage
电容纹波电压
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Publisher 清华大学清华深圳国际研究生院,广东 深圳 518055%华南理工大学电力学院,广州 510641%南京南瑞继保电气有限公司,南京 211102%国网江苏省电力有限公司电力科学研究院,南京 211103
山东大学电气工程学院,济南 250061%清华大学清华伯克利深圳学院,广东 深圳 518055
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Title 基于准比例谐振控制的模块化多电平矩阵变换器环流抑制策略
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