DC/DC变换器稳态运行谐波状态空间模型王建宇1，李先允1，颜云松2，陈永华2，杨城1(1．南京工程学院电力工程学院，南京211167;2．南瑞集团(国网电力科学研究院)有限公司，南京211106)摘要:针对传统的状态空间平均法在建模中损失纹波信息的缺陷，基于线性时间周期理论和谐波线性化理论，采用傅里叶分解法，建立DC/DC变换器稳态运行下的谐波状态空间模型，绘制DC/DC变换器的谐波等效电路，从频域角度描述拓扑电流和电压的映射过程;在输入侧加入小扰动，建立DC/DC变换器的谐波状态空间小扰动描述矩阵，对稳态谐波和扰动间谐波进行分析。仿真与实验结果表明，基于谐波状态空间的DC/DC电路建模方法具有极高的精确性，在未来多变流器的配网场景谐波分析中具有一定的工程运用价值。关键词:线性时间周期;谐波线性化;谐波状态空间;谐波等效电路;间谐波DOI:10．19753/j．issn1001-1390．2023．04．016中图分类号:TM46文献标识码:B文章编号:1001-1390(2023)04-0113-08Harmonicstatespacemodelforsteady－stateoperationofDC/DCconvertersWangJianyu1，LiXianyun1，YanYunsong2，ChenYonghua2，YangCheng1(1．SchoolofElectricPowerEngineering，NanjingInstituteofTechnology，Nanjing211167，China．2．NAＲIGroupCorporation(StateGridElectricPowerＲesearchInstitute)Co．，Ltd．，Nanjing211106，China)Abstract:Thetraditionalstatespaceaveragingmethodcancausethelossofrippleinformationinthemodeling．Toad-dressthisdefect，theFourierdecompositionmethodisusedtoestablishharmonicsundersteady-stateoperationofDC/DCconverterstatespacemodel，basedonthelineartimeperiodtheoryandharmoniclinearizationtheory．Todescribethemappingprocessoftopologycurrentandvoltageinfrequencydomain，theharmonicequivalentcircuitofDC/DCconverterisdrawn;toanalyzethesteady-stateharmonicsanddisturbanceinter-harmonics，asmalldisturbanceontheinputsideisaddedandadisturbancedescriptionmatrixofsmallharmonicstatespaceoftheDC/DCconverterisestablished．Accord-ingtotheresultsofsimulationandexperiment，theDC/DCcircuitmodelingmethodbasedontheharmonicstatespacehashighaccuracy，whichalsoinsurescertainfutureengineeringapplicationvalueintheharmonicanalysisofdistributionnet-workscenarioswithmultipleconverters．Keywords:lineart...
