大型交直交变频器在矿井提升机中的应用

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1、上海海洋大学硕士学位论文ApplicationofLargeAC-DC-ACConverterinMineHoisterAbstractTheminehoisterislargeelectromechanicalhoistingequipment.Toadjustthespeedofthehoisterinoperation,thetraditionalwoundmotorwasadoptedforthestepspeedadjustmentviaaserialresistancewithitsrotor.Ithast

2、headvantagesofsimpleequipmentstructureandconvenientcontrol,butitsdisadvantagesmainlylieinrelativelyhighenergyconsumptionastheslippowerisconsumedontheresistancebymeansofheating,itisalsoofrelativelyweakmechanicalpropertiesasitbelongstothestepspeedregulation.Theloa

3、doftheminehoisterisofthepotentialload,whichrequiresthetransmissiondevicetorunsmoothlyinthefourquadrants,i.e.,theenergycanflowinatwo-waymannertomeettherequirementsforhandlingwiththeheavyduty(themotorisinthegenerationstate);ithasastrongmechanicalpropertyandrelativ

4、elylargestartingtorquethatcanmeettherequirementsforstartingwithheavyduty(differentfromthefanandpump);andthespeedcanberegulatedinawiderangetomeetthevariousrequirementsforspeed(creepingatlowspeedandhoistingathighspeed).Thereproducibletransmissiondevicewiththefulld

5、igitalAC-DC-ACquadrantstransducercanwellmeettheaboverequirements.Ithastheadvantagesthattheperformanceisexcellent,thecontrolprecisionishigh,thepowerfactoris1,thepollutiontothegridharmonicwavesissmall,etc.Itwillbewidelyusedinthedrivesystemofthehoisterstepbystep.Th

6、ispapercoverstheapplicationofABBACS6000DTCtransducerofenergyfeedbackinthehoisteraswellastherelevantworkprincipleandoperationalcommissioning.TheLCLfiltercanrestrainACvoltagedistortionandcurrentharmonics.Boththeline-sideconverterandmotor-sideconverterhavetheirownR

7、DCUcontrolunitsandcontrolprograms.Theline-sideconverterrectifiesthethree-phaseACtoDCtosupplypowertothemiddleDCcircuitinthedriveunit,whichthussuppliespowertothemotor-sideconverterofthedrivemotor.Theactivefrontend(AFE)powersupplyintheinverterisathree-phase-voltage

8、PWMrectifyingpowersupply.Duetotheapplicationofthefull-controlswitchdevice(e.g.,IGBT),theAFEconverterhasbecomeafully-developedreversibleconverter,whichcanI上海海洋大学硕士学位论文