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1、哈尔滨工业大学工学硕士学位论文AbstractStraightly-actingelectromagneticmechanismisthepreferredsolutiontothestructuraldesignofhigh-powercontactors,thestaticcharacteristicsanddynamiccharacteristicsdirectlydeterminethereliabilityandtheelectricallifeofthepowercontactor.Thispapermainlyreferstot
2、heclosed-backbounceandthelackofbreakingcapacity,whichexistinthehigh-powerstraightly-actingelectromagneticmechanism,andinvestigatesthekeyindexesstandingforitsrelatedperformancetorealizetheoptimizationdesignofrelatedparameters.Meanwhile,onthebasisoftheenergy-savingmodulepecul
3、iarlyownedbythehigh-powerelectromagneticapparatus,voltageregulationstrategiesareintroducedintothecontrolofthecoilvoltage,andultimatelyachievestheoptimizationofbothstructuralparametersandelectricalparametersaswellasrobustdesign.First,thestaticmodelofstraightly-actingelectrom
4、agneticmechanismwasestablishedonthefiniteelementsimulationsoftwareFLUXtogetanaccurateresultofstaticcharacteristics.Basedonthestaticdata,using4-orderRunge-Kuttamethodtodiscretedynamicsdifferentialequations,thedynamicmodelofelectromagneticapparatuswassolvedbynumericalmethods.
5、what'smore,validatethemethodforsolvingthedynamiccharacteristicsbythecomparewithexperiment,tolaythefoundationforsubsequentoptimizationdesign.Secondly,thekeyindexesstandingforitsrelatedperformancewereputforward,referringtotheclosed-backbounceandthelackofbreakingcapacityexiste
6、dinthehigh-powerstraightly-actingelectromagneticmechanism.Theoptimizationdesignofthestructuralparameterswasrealizedbytheparticleswarmoptimizationalgorithm(PSO),takingthedistanceandthestiffnessandinitialforceofthereactionspringandreboundspringasvariables,atthesametime,pullsp
7、eed,breakingspeedandpulltimeastheoptimaltargets.Thirdly,onthebasisoftheenergy-savingmodulepeculiarlyownedbythehigh-powerelectromagneticapparatus,voltageregulationstrategieswereintroducedintothecontrolofthecoilvoltage,whiledevelopedatMicrochipMPLABplatformwithPIC12F615microc
8、ontrollercorebyPICCprogramminglanguage.Furthermore,thefragmentedPWMoutputcouldregu