基于DSP的SVC控制系统设计

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1、西南交通大学硕士学位论文基于DSP的SVC控制系统设计姓名：刘华东申请学位级别：硕士专业：电磁悬浮与超导工程指导教师：郭育华20080601西南交通大学硕士研究生学位论文第lI页ABSTRACTWiththerapiddevelopmentofChinesenationaleconomy,therearemoreandmoreindustrialandcivilelectricaldevicesindistributionpowernet．Theseloads．whichhavetheelectriccharacteristiesoflOWpowerfactor'

2、nonlinear,asymmetryorimpact．bringSOmuchpowerqualityproblemsaslowpowerfactor,voltagefluctuationandflicker,threephasevoltageunbalance，high．orderharmonicpollutionandetc．Inallkindsofelectricaldevicesthatcansolvewellthesepowerqualityproblemssynthetically,staticvarcompensator(svc)iSoneofthe

3、m，whoseratioofcostandperformancehasveryhighcorrespondingly．thecontrolsystemofSVCwhichimpactondeviceperformanceiSthekeyandisalsothekeytechnology．Inthispaper,thecontrolsystemofSVCofthetypeTCR&TSChasbeendesign．0nthebaseofthecomparativelyripeTCRandTSCcontroltheory,thisPaperpresentthecontr

4、olstrategyofSVCwhichismadeupofTCRandTSCandalsodesignitsCOntroller．IntheaspectofTSC．theappropriatewayofswitchingonand0fjFWasadopted．asaresultsofthisfact．thePowerfactorwasincreasedwhiletheharmonicswasrestrained；inaspectofTCR．bothoftheopen—loopcontrolandloopcontrolwaywerecombinedeachothe

5、rtoguaranteetheresponsespeedandcontrolprecision．Toensurethattheequipmentresponsespeedandaccuracy,thisdesignusesthecombinedcontrolstrategyofopen．100pandclosed．100pcontrolandthealgorithmsbasedoninstantaneousreactivepowertheory．Intermsofhardware．thisPaDerdesignsthecontroller,whichiSbased

6、ondoubleCPUofTM$320F28l2DSPand80C196KC，andtheperipheralcircuit．Inthetermsofsoftware，twomodulesaredesignedinthispaper,includingDSPprogrammingandMCUprogrammingforlowercomputerandcontrolsoftwaredesigningforuppercomputer．DesignideasontheSOflwarehavebeenintroducedinthispaperandthisdesignbo

7、threalizesthefunctionofreactivepowercompensationandconvenientintuitiveman—machineinterfacedialogueinoperation．Finally,theeffectivenessofthiscontrolsystemhasbeenverifiedthroughthetestandtheactualoperation．Theresultsshowedthatthecontrolsystemofthecompensationdevice(TCR&TSC)iSarationalde

8、sign．