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戴斌,宋卫章.矩阵变换器系统小信号模型稳定性分析[J].电源学报,2019,17(5):73-79
矩阵变换器系统小信号模型稳定性分析
Stability Analysis of Matrix Converter System Based on Small Signal Model
投稿时间:2017-05-15  修订日期:2019-01-02
DOI:10.13234/j.issn.2095-2805.2019.5.73
中文关键词:  矩阵变换器  稳定性分析  传递函数  零极点
英文关键词:matrix converter  stability analysis  transfer function  zero-pole
基金项目:国家自然科学基金资助项目(51307138)
作者单位E-mail
戴斌 运城学院数学与信息技术学院, 运城 044000 daibin519@126.com 
宋卫章 西安理工大学自动化与信息工程学院, 西安 710048  
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中文摘要:
      提供了一种基于小信号模型的矩阵变换器稳定性分析方法。以电源、二阶输入L-C滤波器、矩阵变换器和R-L负载为对象,建立矩阵变换器系统小信号模型。获得传递函数,通过对其零极点的分布进行分析,探明了各参数对系统稳定性影响的规律,并着重研究了矩阵变换器管压降、换流和死区这些非线性因素对系统稳定性的影响。通过傅里叶分析给出了谐波表达式,分析了这些非线性因素与稳定性的关系。仿真结果验证了建模和分析结论的正确性。
英文摘要:
      A method for the stability analysis of matrix converter is proposed based on the small signal model. The small signal model of a matrix converter system is established with the objects of power supply, second-order input L-C filter, matrix converter and the R-L load. Its transfer function is obtained, and the distribution of zero-poles, as well as the effects of different parameters on the system stability, is analyzed. Specifically, the effects of some nonlinear factors including the on-state voltage drop, commutation process and dead zone are studied. Through Fourier analysis, the expression for harmonics is given, and the relation between these nonlinear factors and the system stability is analyzed. Simulation results verify the conclusions from the modeling and analyses.
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