矩陣變換器多電壓矢量的電機(jī)直接轉(zhuǎn)矩控制系統(tǒng)的研究.pdf

1、湘潭大學(xué)碩士學(xué)位論文矩陣變換器多電壓矢量的電機(jī)直接轉(zhuǎn)矩控制系統(tǒng)的研究姓名：梁炳寅申請(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：朱建林20080605IIAbstractInthispaperthetopicis“DirectTqueControlofMotbasedonthematrixconvertermultivoltagevect(longshtzero)“thispaperhasstudiedtheprincipleadv

2、antagesofmatrixconverteraswellasthefeasibilityofspacevectmodulationanalyzedthepropertiesbasicalgithmsrulesofspacevectmodulationstrategyhasamedetailedillustratesfmultiplevoltagevectofmatrixconverterbasedonthetheyofdirectt

3、quecontrolusematrixconvertersupplymotreasonableapplyitslongshtzerovoltagevectthetheyofdirecttquecontroltoregulatemotspeed.Themaincontentsofthispaperasfollows:Fromthewkprincipleofmatrixconverter(MC)analysisthemodelofmatri

4、xconverterinducteddoublespacevectmodulationstrategyofmatrixconverterequivalentvirtualcircuitFacedthecommutationproblemintroducedthefourstepcommutationstrategy.DirectTqueControl(DTC)isanovelACvariablespeedmethodaftervectc

5、ontrolthepapersimplyanalyzesthebasicprinciplesofdirecttquecontrolinductedcontrolmethodofdirecttquecontrolsystemtheacteristicsofMatrixconvertertheadvantagesofDirectTqueControlarecombinedfmatACadjustingspeedcontrolsystemth

6、atisnonpollutinghighperfmance“green“powerfactisadjustablecanmaintainthepowerfactis1.Finallyfullutilizebigsmallinputvoltageofmatrixconvertersynthesislongshtzerovoltagevectbasedondirecttquecontrolofmotthatfedbymatrixconver

7、terthroughtherationaluseoflongshtzerovoltagevecttoreducetqueripple.ThesimulationmodelofmaincircuitcontrolcircuitisconstructedwithMATLABSIMULINKlotsofsimulationsarecarriedoutpreliminaryexperimentalverification.Theresultsi

8、ndicatethatcontrolstrategyeffectivelyreducetquerippleatlowspeedimprovedfluxaccuracyenhancetherobustnessofthesystemthelowspeedperfmanceofDTCsystemwasimproved.KeyWds:MatrixConverterDirectTqueControlMultipleVoltageVecthyste