电动汽车电驱动系统高速区快响应控制策略

20076Vol.22No.6226TRANSACTIONSOFCHINAELECTROTECHNICALSOCIETYJun.2007250061TMS320LF2407ADSPTM346;U469.72StudyofHighDynamicResponseStrategyforElectricVehicleDriveSystemintheHigh-SpeedRegionLiKeZhangChenghuiCuiNaxinShandongUniversityJinan250061ChinaAbstractElectricvehicledrivesystemsrequestfasttorqueresponsespeedinwiderangeofvelocityandhighefficiencyaswell.Inthispaper,theoperationcharacteristicsofinductionmotorintypicaldrivecycleareanalyzedatfirst,anefficiencyoptimizationstrategybasedonlossmodelisgiven,andtheoptimizationmagneticfluxchoicerestrictionabovethebasefrequencyisdiscussed;thenbyanalyzinginfectionofdynamicresponsespeedcausedbyefficiencyoptimizationstrategy,afasttorqueresponsecontrolstrategysuitableabovebasefrequency,whichdistributemagnetizingcurrentandtorquecurrentaccordingtothevoltageconstraintoffsetinthedynamicprocess,isproposed.Thestrategybreaksthroughthelimitationofmaximumtorquecontrolstrategy,whichbasedonthesteadystateanalysis,whensolvingfasttorqueoutputproblemindynamicprocess.TheexperimentsystemisbuiltwithTMS320LF2407ADSP.Thesimulationandtheexperimentalresultsindicatethattheproposedcontrolstrategycanprovidefasttorqueresponsespeedindynamicprocess,reducetheinfectionofelectricvehicle’sdynamicresponsespeedcausedbyefficiencyoptimizationstrategy.KeywordsElectricvehicle,inductionmotor,dynamicresponse,efficiencyoptimization,torquecontrol50477042,60474007,20040422052Z2004G042006-09-062006-12-0642200761[1-2][3-5][6-9][6-9]SSCSCLMCHC[3-5][3-9][3-5][10-13]1/ωr[11]TMS320LF2407ADSP2UDDSUrbanDynamometerDrivingSchedule1a1bs11UDDSFig.1Urbandynamometerdrivingscheduleprofile226433LMC[8][10-13]Ploss22srlossr2femminminRPRLωψ⎧⎛⎞⎪=++⎜⎟⎨⎜⎟⎪⎝⎠⎩222ererrrsr2fefepp2TTRRRRRRnnωψ−⎫⎛⎞⎪+++⎜⎟⎬⎜⎟⎪⎝⎠⎭1s.t.22dsqsii+2maxI22dsqsUU+2maxURs,Rr,RfeLmnpUds,Uqsdqids,iqsdqωrTeUmaxImax1.51PlossψrPlossψr[8]opoprrrL*roprLrrLψψψψψψψ⎧⎪=⎨⎪⎩222operrrs2fe2srp2femTRRRRRnRLψω⎛⎞=++⎜⎟⎜⎟⎛⎞⎝⎠+⎜⎟⎜⎟⎝⎠22max1smaxrLm222ss(/)()ULILLLωσψσ−=−2ψrLoprψψrLψrL44.1mepqsrrLTniLψ=31/ωr[10-13]3[3-5]4.2dssds1qsdsURipωψψ=−+4qssqs1dsqsURipωψψ=++5dssdsmdrLiLiψ=[phone]qssqsmqrLiLiψ=+7ds1sqsmqr()ULiLiω=−+8qs1sdsmdr()ULiLiω=+9ω1dr0i=10mqrqsrLiiL=−1189ds1sqsULiωσ=−12qs1sdsULiω=132msr1LLLσ=−()()22qsds221s1s1/1/iiLLωωσ+2maxU14122max1smaxds222ss(/)()ULIiLLωσσ−=−1522qsmaxdsiIi=−164.310rdrmdsLiψψ==17ids1017rmdrdsrrLiiLLψ=−189mqs1sdsdrsLULiiLω⎛⎞=+⎜⎟⎝⎠19mdrsLiLγ=19qs1sds()ULiωγ=+201220()()22qsds221s1s()1/1/iiLLγωωσ++2maxU21iqs2mmrmmdrdsrssrsrsrLLLLiipLLLLLLRψγψ==−=−2221ids21eσ=−23e122max1smaxds222ss(/)()ULIiLLωσγσ−=−−24iqs16idr0γ052226452Fig.2SchematicdiagramofhighdynamicresponsestrategyMatlab/SimulinkPn=37kWnp=2Rs=0.087ΩRr=0.228ΩLm=34.7mHLls=0.8mHLlr=0.8mHJ=0.662kg·m220N·m1s11.5Umax=400VImax=100A30.98Wb20.26Wb31280N·mγ1214%128%[5]80N·m3Fig.3Simulationresultsepmqsdrdsqr()TnLiiii=−2511rdrmLiLλ=2mepqsdsr()LTniiLλ=+26λγ4Te1Te226Te44Fig.4Analysisofmotor’storquecapability46200766DSPTMS320F2407AIPMDSPQEPHEDS5640Ten=1.3N·mRs=24.6ΩRr=16.1ΩLm=0.97HLls=0.02HLlr=0.02HJ=3.5110−4kg·m2DSPRS-232PCPC92rad/s0.68N·m[0.5(pu)]22.2s130rad/s[1.5(pu)]5610%9%712t/s12001275135014251500157505101520x1e3Acquisitiontimetorque_12.82.62.43.02.23.20.51.01.52.02.5Te/(N·m)(b)t/s120014001600180020003035404550Acquisitiontimeomg2.202.302.402.502.6012011010090130ωr/(rad·s−1)1(a)6Fig.6Experimentalresultsofhighdynamicresponsestrategybasedondynamicanalysist/s120014001600180020003035404550Acquisitiontimeomg2.202.302.402.502.6012011010090130ωr/(rad·s−1)(a)12001275135014251500157505101520x1e3Acquisitiontimetorque_12.82.62.43.02.23.20.51.01.52.02.5t/sTe/(N·m)(b)5Fig.5Experimentalresultsofmaximumtorquecontrolstrategybasedonsteadystateanalysis22647[1]ChanCC,WongYS.Thestateoftheartofelectricvehiclestechnology[C].The4thInternationalPowerElectronicsandMotionControlConference,Xi’anChina,2004,1:46-57.[2][J]20043811-5.CaoBinggang,ZhangChuanwei,BaiZhifeng,etal.Technologyprogressandtrendsofelectricvehicles[J].JournalofXi’anJiaotongUniversity,2004,38(1):1-5.[3]VukosavicS.N,LeviE.Amethodfortransienttorqueresponseimprovementinoptimumefficiencyinduc-tionmotordrives[J].IEEETransactionsonEnergyConversion,2003,18(4):484-493.[4][J]200520(7)93-98.YangGeng,GengHua,WangHuangang.Atorquecontrolstrategyofinductionmotorstakingefficiencyofdynamicstateintoaccount[J].TransactionsofChinaElectrotechnicalSociety,2005,20(7):93-98.[5][J].200525(11)118-123.CuiNaxin,ZhangChenghui,SunFengtao.Studyonefficiencyoptimizationandhighresponsecontrolofinductionmotor[J].ProceedingsoftheCSEE,2005,25(11):118-123.[6]SlobodanNVukosavic,LeviE.RobustDSP-basedefficiencyoptimizationofavariablespeedinductionmotordrive[J].IEEETransactionsonIndustrialElectronics,2003,50(3):560-570.[7]TaCM,HoriY.Convergenceimprovementofefficiency-optimizationcontrolofinductionmotordrives[J].IEEETransactionsonIndustryApplications,2001,37(6):1746-1753.[8][J]200419(5)36-42.CuiNaxin,ZhangChenghui,DuChunshui.Advancesinefficiencyoptimizationcontrolofinverter-fedinductionmotordrives[J].TransactionsofChinaElectrotechnicalSociety,2004,19(5):36-42.[9]AbrahamsenF,BlaabjergF,PedersenJK,etal.Efficiency-optimiz