三電平逆變器的svpwm控制策略及其在spqc中的應(yīng)用

1、（類別：全日制碩士研究生題目：三電平逆變器的SVPWM控制策略及其在SPQC中的應(yīng)用英文題目：類別：全日制碩士研究生題目：三電平逆變器的SVPWM控制策略及其在SPQC中的應(yīng)用英文題目：ThreeLevelInverterWithSVPWMTechniqueanditsApplicationtoSPQC研究生：康寧學(xué)科名稱：電力電子與電力傳動(dòng)指導(dǎo)教師：李含善教授任永峰副教授研究生：康寧學(xué)科名稱：電力電子與電力傳動(dòng)指導(dǎo)教師：李含善教授任永

2、峰副教授二○○九年五月二○○九年五月碩士學(xué)位論文碩士學(xué)位論文分類號(hào):學(xué)校代碼:10128分類號(hào):學(xué)校代碼:10128UDC:學(xué)號(hào):20061186學(xué)號(hào):20061186AbstractWiththedevelopmentofpowerelectronictechnologymultilevelinvertingtechnologyhasbecomeapopresearchinhighpressurehighpowerconverting

3、fields.ItcansynthesizemultileveloutputvoltagewiththedistributionofDCvoltagethecombinationofdifferentswitchingactions.Multilevelinvertingtechnologycaneffectivelyenhancethecapacityvoltageenduranceofsystemlessenswitchinglos

4、softheinverterharmonicdisttionofoutputvoltage.Sinceitsemergencegreatemphasishasbeenputtingonitintheapplicationofpowersystem.Predigestingthecontrolalgithmbalancingtheneutralpointpotentialarethepivotalproblemsintheapplicat

5、ionsofmultilevelconvertingtechnology.Sooperationprincipleofthreelevelinverterisstudiedfirst.AfteranalyzingtheunbalancedquestionsofDCcapacitvoltageindetailsomecontrolmethodsoftheneutralpointpotentialarestudied.Thenaccding

6、tothevectmodulationthealgithmofmodulationisimprovetobalancetheneutralpointpotentialwhichcanequalizebalancetheDCcapacitvoltageincreasethestabilitydecreasetheoutputharmonicofthreelevelinverter.Withaviewtothedigitaltechnolo

7、gydevelopmentofpowerelectronicstoovercomethedefectofthethreelevelSWPWMalgithmsearchwitchisnotexplainedparticularlyenoughthethreelevelSVPWMalgithmisstudiedindetailthenthealgithmisdeducedparticularlyimprovedthecontrolalgit

8、hmissimplified.Combiningtheacteristicsofvectmodulattheneutralpointpotentialiscontrolledbyadjustingtheoperatingtimeofpositivenegativespacevoltagevectswhichisconvenientlytocontrolrealizeeasily.ThethreelevelinverterSVPWMalg

9、ithmissimulatedbasedontheanalysisdesignofthethey.Simulationresultsprovethatthemodulationalgithmcangettheexpectedwavefmsofoutputvoltageitiseasilytorealize.Thecontroleffectofneutralpointpotentialisobviousitcantotallyreacht

10、hedesigningrequirement.ThediodeclampedthreelevelinverterisappliedinthemaincircuittopologystructureofthethreephasethreewireSPQC(shuntpowerqualitycontroler)inthisthesis.harmoniccurrentdetectingmethodisstudiedindetailthenth