固定合成矢量異步電機DTC控制系統(tǒng)研究.pdf

1、華中科技大學(xué)碩士學(xué)位論文固定合成矢量異步電機DTC控制系統(tǒng)研究姓名：黃朝霞申請學(xué)位級別：碩士專業(yè)：電力電子與電力轉(zhuǎn)運指導(dǎo)教師：鄒云屏20070608IIAbstractDuringtherecent20yearsDirectTqueControl(DTC)finductionmothasbeendevelopedgreatlybecauseofitssimplesystemschemeexcellentdynamicstaticperf

2、mances.Thispaperfocusesonthestudyofinductionmotdirecttquecontrolvariedspeedsystemfedbyfixedsynthesizingvects.Thereareseveralaspectsincludedasfollowing:(1)Asimpleeffectivemathematicmodelofthreelevelinverterinductionmotisb

3、uiltbyanalyzinginverterinductionmotasawhole.Thusaneffectivetoolisprovideftheresearchofthethreelevelinverterinductionmotvariedspeedsystem.Detailedintroducetherelatedtechniqueofthedirecttquecontrolgivethedetailedmethodtofl

4、uxlinkagetqueripplecapabilityestimate.(2)studiedthedesignproblemofthethreelevelinverterinductionmotvariedspeedsystem.Basedonfixedsynthesizingvectsanovelfixedsynthesizingvectsmethodisproposed.Furthermetherealtimeneutralpo

5、intbalancingBangBangcontrolmethodfthenovelfixedsynthesizingvectsisproposed.(3)Aimattheimprovementofcontrolthefunctionalsocarryonthecomparisonexperimentbetween“12vects”method“24vects”methodatthesametimeonthisfoundation.Ft

6、hesakeofthefurtherimprovementoffluxlinkagetqueripplethispaperproposes“24vectsaltermodulationindex”method.thesimulationverificationsarealsocarriedout.Analyzedthemeritshtcomingofthreekindsofmethods.Thesimulationresultsshow

7、thefeasibilityofthecontrolschemeproposedinthispaper.(4)TheDTCschemeisstudiedinthaperbyuseingTMS320F240DSPasthekernelofcontrolsystemthesoftwareofcontrolsystemcompliedinDSPassemblylanguage.Thissoftwarehasrealizedfunctionso