42V汽車爪極同步發(fā)電機系統(tǒng)無測量傳感器的磁場定向控制.pdf

1、廣西大學碩士學位論文42V汽車爪極同步發(fā)電機系統(tǒng)無測量傳感器的磁場定向控制姓名：羋書亮申請學位級別：碩士專業(yè)：電力電子與電力傳動指導教師：盧子廣20080628FlELDORIENTEDCONTROLOF42VAUTOMOTIVECLAWPOLESYNCHRONOUSGENERATORSYSTEMWITHOUTSPEEDANDACVOLTAGESENSORSABSTRACTInrecentyears，theelectricaldeman

2、dinautomobileshasbeenincreasingsteadilywiththeintroductionofmoreandmoreelectricaldevicesHowever，traditional14一Vautomobilepowergenerationsystem，whichisstillwidelyusednowadays，isnotabletomeettheforeseeablefuturepowerrequir

3、ementsduetoitsinherentdesignlimitationsAnewhighpowerhighefficiency42Vclawpolesynchronousgeneratorsystem，therefore，isproposedinthisthesisAPWMrectifierisdirectlyconnectedtothegeneratorandfield—orientedcontrolprincipleisals

4、ointroducedtoensuretheDCoutputvoltagestabilizedat42一VThemodelsoftheclawpolegeneratorthePWMrectifierandthebatteryarepresentedTheclawpolegeneratorismodeledbasedon筇coordinatesinthegeneratingdirectionandtwodifferentvoltageco

5、ntrolstrategiesarealsoproposedinordertocontroltheACelectromotiveforceofthegeneratorandtheDCoutputvoltageoftherectifierThefieldcurrentloopisregulatedwithvaryingspeedMeanwhile，adoubleclosed—loopsystemincludingphasecurrenta

6、ndDCvoltageisalsointroducedAmongthem，thephasecurrentloopisusedasinnerloop，andtheDCvoltageloopisusedasouterlooptoensuretheDCoutputvoltagestabilizeat42VwithloadschangingTeducethecostofthesystem，thecontrolsystemwithoutspeed

7、andACvoltagesensorsispresentedThespeedofthegeneratorandtheterminalACvoltageofthegeneratorarecalculatedbasedontheDCoutputvoltageoftherectifierandtheswitchingsignalsofthePWMrectifierThedynamicresponseofthesystemisasthesame