基于IGCT的高压变频器设计研究

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1、华东交通大学硕士学位论文基于IGCT的高压变频器设计研究姓名：黄炜申请学位级别：硕士专业：电力系统及其自动化指导教师：何人望20060310AbstractResearchontheIGCT-basedHigh—VoltagelnvertersABSTRACT111eapplicationofhigh—powerswitckingdevices，multileveltopologyandoptimalcontrolstrategiesprovesaneffectiveapproachtohighpowercon

2、verters．MuchaRentionhasbeenfocusedonthestudyofhigh．voltageIGCT-basedinverters．111eIntegratedGate—CommutatedThyristor(IGCT)isthelatestpowerswitchingdevicewhichhasmanyadvantagessuchashighswitching—ofrvoltage，largeturn-offcurrent,highswitchingfrequency,lowlosse

3、s，andhighreliability．ItisdevelopedfromGTOandhastheadvantagesofGT0andIGBT．Withtheseadvantages．IGCTismorecompetitivethanGTOandIGBT．Therefore，itisofgreatvaluetostudythemodeling，simulationandexperimentationofIGCTsandIGCT-basedinverters．Firstly,thispaperanalyzest

4、hestructureandcharacteristicsofIGCT．proposesapracticalmodelsuitableforsimulation．111emodelisofsatisfactoryaccuracy,hi曲simulationspeedandeasyparametersolution．ThedesignofequivalentcircuitandthecalculationofparametersofthemodelforaspecifictypeofIGCTaredescribe

5、dindetail．TheIGCTtestcircuitisalsodesignedandrealized．Secondly,thepaperselectsasuitableconvertercircuitbasedonthemultileveltopology．A24．Pul∞Series．TypeDiodeRectifier,anl陀e．LevelNeutralPointDiode—ClampedInverter,andtheSVPWMeontrolstrategYaredesignedandsimulat

6、ed．ElementsinThree—LevelNeutralPointDiode．ClampedInverterarealsoanalyzedandselected．Finally,protectionandcontrolcircuitaredesignedtoassurethestabilityandreliabilityoftheinverter．Problemsconcemingthebalanceofneutralpointvoltage，thedeadtimecontr01．theIGCTsnubb

7、ercircuit，andoutputfiltercircuitareanalyzed，simulatedbyPSIMandexperimented．Simulationandexperimentresultshaveprovedthecorrectness，feasibilityandeffectivenessofthesimulationmodel．theIGCTtestcircuit,theconverterekeuit，theprotectioncircuitandthecontrolstrategie

8、s．KeyWords：IGCT,High—-VoltageConverter,Three—LevelInverter,ControlStrategy,ProtectionCircuit,PSIMSimulationⅡ独创性声明本人郑重声明：所呈交的学位论文是我个人在导师指导下进行的研究工作及取得的研究成果。尽我所知，除了文中特别加以标注和致谢的地方外，论文中不包含其他人已经发表和撰写的