兆瓦级变频驱动综合分析(中英文翻译).pdf

兆瓦级变频驱动综合分析(中英文翻译).pdf

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ComprehensiveAnalysisofMulti-MegawattVariable

FrequencyDrives

AbstractMulti-megawattvariablefrequencydriveshavebeenincreasinglyusedin

manyindustriestoconserveelectricenergy,increaseproductivityandimprove

productquality.Thepaperprovidesacomprehensiveanalysisofmulti-megawattAC

drivesdevelopedbytheworldleadingdrivemanufacturers.Avarietyofmultilevel

voltagesourceinverters(VSIs)andPWMcurrentsourceinverters(CSIs)areanalyzed.

Advantagesanddrawbacksofthesedrivesaresummarized.Variousmodulation

schemessuitableformegawattconvertersarediscussed.Importantconceptsare

illustratedwithcomputersimulationsandexperiments.

Keywords:High-powerACdrives,high-powerconverters,multilevelconverters,

pulsewidthmodulation,spacevectormodulation

1Introduction

Withthetechnologyadvancementsinsemiconductordevicessuchas

high-voltageIGBTs(insulatedgatebipolartransistors)andGCTs(gatecontrolled

thyristors),modernmulti-megawattvariablefrequencydrivesareincreasinglyusedin

petrochemical,mining,steelmetals,transportationandotherindustriestoconserve

electricenergy,increaseproductivityandimproveproductquality.

Thereareanumberofhigh-powerdrivemanufacturersaroundtheworld,

includingABB(Switzerland),Siemens(Germany),Toshiba(Japan),Rockwell

Automation(Canada),GeneralElectric(US),ASIRobicon(US)andAlstom(France).

ThesecompaniesusevariouspowerconvertertechnologiesshowninFig.1intheir

driveproducts.Forinstance,ABBproducesthree-levelneutralpointclampedinverter

feddrives,RockwellmanufacturesGCTcurrentsourceinverterbaseddrives,Robicon

promotescascadedH-bridgemultilevelinvertertechnology,Toshibausesmultilevel

NPC/H-bridgehybridinverters,andA

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