j 1基于電磁熱耦合模型勵磁雙凸極發(fā)電機(jī)最大功率輸出研究

Studyonthe umOutputPowerPerformanceofDoublySalientGeneratorBasedonCoupledElectromagnetic/ThermalModel豐碩穎:Inthispaper,thecoupledEM/thermalfiniteelement(FE)modelisdevelopedfortheDoublySalientElectromagneticGenerator(DSEG)withtheFEAsoftwaresuiteJMAG-Designer.BasedonFEA,regulationruleofconstantoutputvoltageisstudiedbycontrollingfieldcurrentandarmaturecurrent.Thecoupledmodelisusedtodeterminetheextentofthermalconstraint’seffecttogenerator’s umoutputpower.Toascertaintheproposedgenerator’sultimatecapacity,the umoutputpowerundercriticaltemperatureofwinding’sinsulatingmaterialsiscalculatedandtheultimatepoweratdifferentspeedsthenisobtained.AprototypeofDSEGismanufacturedandrelevantexperimentbedissetuptotestthevalidityofresultsobtainedfromFEA.Experimentdataconfirmthesimulationresults.:coupledysis,doublysalientmachine,thermalysis,ultimate此得到了航空航天，風(fēng)力發(fā)電，電動汽車等領(lǐng)域眾多學(xué)者的重視[1,2]118/12DSEG。文獻(xiàn)[3]12/8極無刷雙饋雙凸極電機(jī)(brushlessdoublefeddoublysalientmachine,BDFDS)，由于感應(yīng)反電勢的非正弦性，電勵磁雙凸極電機(jī)常用作無刷直流發(fā)電機(jī)，文獻(xiàn)[4-5]詳細(xì)分析了DSEG的發(fā)電特性。度場之間有緊密的聯(lián)系，若要準(zhǔn)確地對電機(jī)性能進(jìn)行分析，二者[9]。此外，對于發(fā)用于車載發(fā)電系統(tǒng)。電機(jī)的主要參數(shù)如表1所示，軟件JMAG-Designer進(jìn)行計算。 Ta rNu Nu0.128Ta0Nu0.409Ta0

(104Ta107

n代表槽內(nèi)材料種類。流，如圖5所示，URIψLd TabcfUu,u,u,uabcf 0R

0 0

rf

LafL Lcf ff壓輸出能力是衡量一臺發(fā)電機(jī)性能最重要的指標(biāo)之一。圖6分別表示了電機(jī)轉(zhuǎn)速在720V720V平行紅線與各勵磁電流對應(yīng)的輸出6(a)中，當(dāng)發(fā)電機(jī)運(yùn)行速度為(12kWDSEG繞電磁分析所得結(jié)果施加到溫度場分析中，即可得到電機(jī)的情況。JMAG-Designer有限元分析軟件中進(jìn)行耦合仿真，由于需要記錄觀察點(diǎn)的穩(wěn)9220℃，即置的傳感器測量勵磁繞組的溫度，T2位置的傳感器測量電樞繞組的溫度。圖1012KWDSEG實(shí)驗(yàn)平 圖11溫度傳感器埋設(shè)位12所示。由圖可見，仿真結(jié)果與實(shí)驗(yàn)結(jié)果具有較好的一致性，驗(yàn)證了三12勵磁繞組溫度的穩(wěn)定過程T1T213所示?？梢园l(fā)現(xiàn)，電機(jī)工作圖13不同轉(zhuǎn)速下仿真與實(shí)驗(yàn)對比(a)位置T1(b)位置ZhuoranZhang,YangyangTao,‘‘InvestigationofaNewTopologyofHybridExcitationDoublySalientBrushlessDCGenerator’’,IEEETransonIndustrialElectronics,vol.59,no.6,2550-2556.June2012.ZhuoranZhang,YangguangYan,andYangyangTao,“Anewtopologyoflowspeeddoublysalientbrushlessdcgeneratorforwindpowergeneration,”IEEETransactionsonMagnetics,vol.48,no.3,pp.1227-1233,Mar.2012.ZhuoranZhang,YuWang,YuSang,LiYu.,“EfficiencyImprovementandThermalysisofATotalEncolosedSelf-coolingDoublySailientGeneratorforStand-alonePowerSystem,”IEEETransonMagnetics,vol.52,no.7,July.2016.DoublySalientBrushlessGeneratorforAutoOn-BoardGenerationApplication,"invol.51,no.11,pp.1-4,Nov.D.Staton,A.BogliettiandA.Cavagnino,"SolvingtheMoreDifficultAspectsSept.2005.ChristianKral，HabetlerTG，HarleyRG．RotorTemperatureestimationofsquirrel-cageinductionmotorsbymeansofacombinedschemeofparameterestimationandathermalequivalentmodel[J]．IEEETransactionsonIndustryWenyingJiang,ThomasM.Jahns,“CoupledElectromagnetic–ThermalysisofElectricMachinesIncludingTransientOperationBasedonFinite-ElementTechniques,”IEEETransonIndustryApplications,vol.51,no.2,1880-1889,Mar.2015.A.Boglietti,A.Cavagnino,D.Staton,M.Shanel,M.Mueller,andC.Mejuto,J.Saari,“Thermalysisofhigh-speedinductionmachines,”Ph.D.dissertation,Lab.Electromechan.,HelsinkiUniv.Technol.,Espoo,[10]F.P.Incroperaa