1、奪肥HefejUnive‰——單位代碼：—地塹!學號041坐!!!L碩士學位論文MASTERDISSERTATIoN③論文題目：基于三維空間矢量調制的三相四橋臂逆變器研究學位類別：——學歷碩d學科專業(yè)：(工程領域)!三里堡!塹苧變作者姓名導師姓名完成時間吳玉楊張等教授2007年5月警咖犬～夢n工螄TheResearchonThreePhaseFourLegInverterBasedOn3DSVMAbstractGenerallythet

2、raditionalthreephasethreeleginvertersaleused謝delywiththreephasebalancedloadsButwhenthethreephaseloadsareunbalancedornonlinearthreephasevoltageoutputscannotbesymmetricalTllispaperpresentsathreephasefourleginverterThethree

3、phasefourleginvertercansupplyamidpointtothethreephaseunbalmacedloadsRCallcontrolthezerosequencevoltagesandcurrents，sothethree—phasefourleginverteroutputsthreephasesymmetricalvoltagesUsingsymmetricalcomponents，thispaperan

4、alysisessteadystateofthreephasefourleginverter11鵬edimensionalspacevectormodulationscheme。thathashi匝DCvoltageutilizationandcartresetinalowdistortionisproposedforthree—phasefourleginvertern圮algorithmofthreedimensionalspace

5、vectormodulationisdepictindetailThenthemathematicmodelofthreephasefourleginverteriSestablishedintwodifferenteoordinatesBasedoncompaliSOnofthreephasefourleginvertercontrolstrategiesthispaperintroducesanovelcontrollerinthr

6、eephasefourleginverterunderelockwiseandanticlockwiserotatingsynchronousflame田1epositivesequencenegativesequenceandzerosequencecomponentsareeentroHedindependently11圮controlstrategyaccomplishesthedecouplingofthethreephasef

7、our1eginverterUsiIlgMATLABsofbuvale。thesimulationofsystemcontrolstrategyvalidatesconsistencywiththeoryanalysisunderoDen100pandclosedloop111econtrolstrategyis島asib王eFinallytheexperimentsalecompletedusingthe1MS320LF2407dig