三電平buck直流變換器控制策略研究

1、重慶大學(xué)碩士學(xué)位論文三電平Buck直流變換器控制策略研究姓名：單國棟申請學(xué)位級別：碩士專業(yè)：電氣工程指導(dǎo)教師：鄭連清20120525重慶大學(xué)碩士學(xué)位論文英文摘要ABSTRACTWi也medeVelopmentofene略ytecllIl010既powerelec仃oIlicconvertershaVebeen淅delyusedi11址曲po、vera11dlli曲Voltageou印utapplicationBecausethes砒ch

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5、torVohagePointedout也atitcannotguaranteet11estabilit)，of也enyingcapacitorV01tage0111yd印endedupont11eoutputvoltageclosed100pcontr01Aimedattheproblemof廿lestabilityof也e丑yingcapacitorvoltage，studiedtwokindscon廿ols仃ategiesof也en

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7、ouplingcontrolbymeallsofmeoutputVohageclosed—loopdetenninedmedutycycle，tllenyingcapacitorVoltageclosed—100padjustedmedutycycletidilytokeepmestableofnyingc印acitorV01tage，Becausei11ductorcurrentco妣smeinfomationofflymgc印aci

8、torvoltage，meVoltageofflyiIlgc印acitorcaIlbestabilizedbyadjustillgtheinductorcurrentTherefore，也enyingcapacitorV01[agecanbestabilizedbycontrolling也einductorcurrentbasedonleadiIlg—edgeV2Llleycurrentcontr01Accordingto鉚ocon仃0

9、1strategies，equiValentco嘶olledsourcecircuitmethodandstatespaceaveragingme也odhavebeenusedtoes砒llish吐1esmallsignalmodel0fBuckTLDCDCconvenerrespectiVelyBasedonthemodels，compensationne觚orkcanbedesigIledandcalculatedtocon咖ctm