交流異步電動(dòng)機(jī)無速度傳感器直接轉(zhuǎn)矩控制系統(tǒng)的研究.pdf

1、分類號(hào)UDC密級(jí)V77780l武漢科技大學(xué)碩士學(xué)位論文交流異步電動(dòng)機(jī)無速度傳感器直接轉(zhuǎn)矩控制系統(tǒng)的研究TheStudyontheDirectTorqueControlSystemforSpeedSensorlessInductionMotor嚴(yán)文壘指導(dǎo)教師姓名申請(qǐng)學(xué)位級(jí)別論文定稿日期學(xué)位授予單位學(xué)位授予日期王耀青教授武漢科技大學(xué)信息科學(xué)與工程學(xué)院答辯委員會(huì)主席：胡榮強(qiáng)教授評(píng)閱人胡榮強(qiáng)教授趙明旺教授第1I頁武漢科技大學(xué)碩士學(xué)位論文Abst

2、raetRecentlywiththedevelopmentofelectricpropulsiontechniquemanyworksweredoneonkindsofelectricmotorcontroltechniquesAmongthemtheDirectTorqueControl(DTC)techniqueattractsmoreandmoreattentionaftervectorcontroltheorybecauseo

3、fitsrobustcharacteristic，simplerealizationandexcellentdynamicresponseSensorlessspeedobservationCanincreasesystemredundancyeffectivelyandcanreducethehardwaredesigncomplexitywhichbecomesafocusofcurrentresearchworksThecombi

4、nationofthesetwoworksiSoneofthedirectionsofthefuturedevelopmentformotorcontroltechniqueInthispaperthedirecttorquecontrolsystemforspeedsenserlessinductionmotorisstudiedprofoundlyThreeaspectsaremainlystudied，whicharetheimp

5、rovementoflowspeedperformance，theobservationofstatorfluxandrotorspeedinspeedsensorlessdirecttorquecontrolsystemThemaincontributionsofthepapercallbeconcludedasfollows：ThetheorydependenceofDTCisparticularlyanalyzedandDTCme

6、thodisanalyzedfromfluxselfcontrolandtorqueselfcontrol，whichilluminatethesuperiorityofDTCsysteminviewofthetheoryOnthisbaSesimulationworksweredonewiththetoolsofMatlab，theresultshaveshownthattheappliedcontrolschemegetsgoodp

7、erformancebothondynamicresponseandonstaticresponseThetraditionalstatorfluxobservationmodelsarestudiedtoindicatetheiradvantagesanddisadvantagesbymathematicalmeans，andbasedonthisanimprovedmethodisgivenThesimulationresultsh

8、aveshownthattheimprovedmethod，compared謝ththetraditionalone，notonlyimproveseffectivelytheprecisionofobservation，butalsoenhancesitselfrobustperformance，whichCanimplementfluxobservationinfullscopeofrotorspeedAccordingtotheD

9、TCprincipleofinductionmotorandbasedontheoptimizeddesignforconventionalModelReferenceAdaptiveControl(MRAC)，tWOalgorithmsofspeedobservationbaSedonArtificialNeuralNetwork(ANN)andExcitationCurrentVector(ECV)aregiven，whichCan

10、createthefavorableconditionforlastlyimplementinghighperformancespeedsensorlessDTCsystemUsingMATLABtoolboxhasdesignedandimplementedthesimulationexperimentofeverypartofandentirespeedsensorlessDTCsystem，andthesimulationresu

11、ltsareanalyzedandexplainedThesimulationresultshaveshownthatthespeedsensorlessDTCsystembasedontheimprovedalgorithmhasgoodstaticanddynamicresponseinlowspeedscopeKeyword：speedsensorless，DTC，statorflux，speedobservation，MATLA