电工技术学报2017，Vol.32Issue(4)：250-259,10.
Buck变换器的多频率矩阵模型及其在分布式供电系统中的应用
A Multifrequency Matrix Model for Buck Converters and Its Application in Distributed Power System
摘要
Abstract
Power electronic converters are typical single input multiple output (SIMO) systems in frequency domain. When a perturbation frequency is input, the state variables contain not only the perturbation frequency but also its sidebands. In distributed power system (DPS), the switching frequency ripples of one converter are the perturbations of the other converter. Such interaction may introduce thebeat frequency oscillation. However, traditional small-signal models mainly focus on the design and analysis of single converter, which ignore some inherent features of the switching converters. These models are questionable to analyze the interactions of power converter around their switching frequencies. Therefore, a matrix-basedmulti-frequency model is proposed. The voltage mode controlled buck converters are taken as examples. The proposedmodel could describe the SIMO characteristics of power electronic converters and explain the beat frequencyoscillations in DPS, while the traditional models fail to do. Detailed comparison shows that traditionalsmall-signal modelsare thesimplifications of the proposed model in different situations. The simulation and experimental results validate the proposed model.关键词
分布式供电系统/Buck变换器/多频率矩阵模型/差频振荡Key words
Distributed power system/Buck converter/multifrequency matrix model/beat frequency oscillation分类
信息技术与安全科学引用本文复制引用
岳小龙,卓放,杨书豪,裴云庆,孙力,孙亮..Buck变换器的多频率矩阵模型及其在分布式供电系统中的应用[J].电工技术学报,2017,32(4):250-259,10.基金项目
国家高科技研究发展计划(863计划)(2015AA050606)和国家自然科学基金(51177130)资助项目. （863计划）
