級聯(lián)直流分布式電源分析與設計

1、南京航空航天大學碩士學位論文級聯(lián)直流分布式電源分析與設計姓名：陳小平申請學位級別：碩士專業(yè)：電力電子與電力傳動指導教師：張方華20070101級聯(lián)直流分布式電源分析與設計iiABSTRACTTheinteractionbetweensubsystemsofDCdistributedpowersystemsmightcausebothdynamicstaticbehavisofasingleconvertereventhewholesys

2、temdegradatedeveninstable.theinteractionisakeytechnologyofpowerelctronicssystemintegration.ThispaperstudiestwostageCadedDCDistributedPowerSystems.BasedonatwostageCadedDCconverterthispaperanalyzescomparesthedlebrook’scrit

3、eriontheimprovedimpedancespecificationfthesourceconverterthefactthataffectstheinputimpedancetheoutimpedanceofconverterisalsostudied.Whentheimprovedimpedancespecificationissatisfiedthesourceconverterhasthesamestabilitydyn

4、amicperfmance.Theeticalanalysisisverifiedbythesimulationalexperimentalresults.BasedonatwostagesinglephaseaeronauticalstaticinvertertheoperatingprincipleofpushpullfwardDCDCconverterwithanovellosslesssnubbercircuitisanalyz

5、ed.ThreeDCDCprototypeconvertersof27Vinput360V500W360V1000W360V1500WoutputarebuilttheefficiencyofDCDCprototypeconvertersishigh.BasedonthetwostageinvertersysteminteractionbetweenDCDCconverterinverterareexpled.DCDCconverter

6、outputvoltagecontainsplentifullowfrequencyripplecausedbythenonlinearinverterload.Inreversetheripplecausesbadsteploadresponse:inverteroutputvoltageisdistteddynamicperfmanceisdegraded.TwokindsofinductcurrentoperatemodeofDC

7、DCconverterwiththeinverterloadareproposed.Thequicktracemodetheslowtracemodeiscomparedverfiedbytheexperimentalresults.KeyWds:DCdistributedpowersystemsinputimpedanceoutimpedancedlebrook’scriterionimprovedimpedancespecifica