SimulationStudyoftheThree-PhaseFlyingCapacitorInverters:Modulation Strategies and Applications
Abstract
Thispaperisasimulation studyofmodulationstrategiesinthree-phaseflyingcapacitorinvertersinMATLABsimulink.Theflyingcapacitormultilevelconverterisarecentlydevelopedconvertertopologyassuringaflexiblecontrolandmodulardesign.However,theflyingcapacitormultilevelconverterrequiresabalancedDCvoltagedistribution. This canberealizedbyusingaspecialcontrolleadingtonaturalbalancingorbymeasuringthevoltagesandselectingtheappropriateswitchingstate..Underinvestigationthosestrategiesthatsolvethecapacitorvoltagebalancingproblem,Carrierbasedphase-shiftPWMmethodwithAPOD,IPD,PODarepresentedandcorrespondingvoltageharmonicdistortionvaluesareanalyzed3levelfivelevelFlyingcapacitormultilevelinverters.AgeneralmathematicalmodelforanN-levelinverterisusedforcircuitoperationanalysisandAreviewpowersystemapplicationsofflyingcapacitormultilevelinvertersarepresented.
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