級(jí)聯(lián)多電平變頻器測(cè)控系統(tǒng)的設(shè)計(jì).pdf

1、西南交通大學(xué)碩士學(xué)位論文級(jí)聯(lián)多電平變頻器測(cè)控系統(tǒng)的設(shè)計(jì)姓名：程新偉申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：電力電子與電力傳動(dòng)指導(dǎo)教師：關(guān)振宏20090501西南交通大學(xué)碩士研究生學(xué)位論文第1I頁(yè)●__l●●____Il●_l__l___l●l___●__●l_______●_●_________●____●____。。_____________●_____●_●l●lI_____●_l_一一AbstractInmultilevelinverters，t

2、hevoltagestressofeachpowerdeviceisrelativelylower，thatissuitabletorealizethehi曲voltageandlargecapacityinverterswiththelowvoltageresistantpowerdevicesAnditispossibletoenhancethequalityofinverter’Soutputvoltageobviouslybyu

3、singmulti—levelinvertersTherefore，withthedevelopmentofpowerdevices，themultilevelconvenertechnologyhasbeenalleffectiveapproachforinverterstoachievehi曲voltageandlargepowerInthispaperselectedoneofthestrongcompetitiveadvanta

4、getopologycascadedmulti—levelinvertersastheresearchobjectCompleteditstopologycontrolstrategyandthemeasureandcontrolsystemdesignFirstofall，thispaperanalysedtheresearchsignification，domesticandforeignresearchstatusofmultil

5、evelinvertersComparedthecharacteristicsofthreematuretypesoftopologyacquiredtheadvantageofcascadedmulti—levelinvertersandconsequently，takeditastheresearchobjectComparativeanalysisofthefourmodulationstrategy，chosedcarrierP

6、hase—ShiftedSPWM(PSSPWM)’SmodulationmethodandConstantProportionofVoltagetoFrequency’ScontrolstrategyThroughmathematicalanalysisandtheoreticalsimulation，wecanconfirmthatOurchoiceiscorrectandfeasiblePointedouttherelationof

7、caseadeunits’numberandcarrierphaseshiftedangle，andthemodulationratio(M)’SimpactontheoutputvoltageCompletethemathematicalmodelofcascadeinverterandthedead—timeeffectionInthenextpart，accomplishedthehardware’Sdesign，includet

8、hetypeselectionofDigitalSignalProcessor(DSP)，ComplexProgramableLogicDevice(CPLD)，andIntelligentPowerModule(IPM)；Thecircuits’designofsystempowermeasurement(speed，current，voltage，fault)circuitsandcommunicationUsingLabwindo

9、ws／CVItoachieveauppercomputerinterface，therealizationoftheinverter’Sturnandoffsetthespeed，communicationconfigured，voltage，currentandspeedmeasured，currentsoftwarefiltering，harmonicanalysisCompiledthelowercomputer(DSP)’SSe