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中国矿业大学2008届毕业设计第1页英文原文SWITCHEDRELUCTANCEMOTORSDRIVEFORTHEELECTRICALTRACTIONINSHEARERHCHENCOLLEGEOFINFORMATIONANDELECTRICALENGINEERINGCHINAUNIVERSITYOFMININGTECHNOLOGY,XUZHOU221008,CHINACHENHAOCUMTTOMCOMABSTRACTTHEPAPERPRESENTEDTHEDOUBLESWITCHEDRELUCTANCEMOTORSPARALLELDRIVESYSTEMFORTHEELECTRICALTRACTIONINSHEARERTHESYSTEMCOMPONENTS,SUCHASTHESWITCHEDRELUCTANCEMOTOR,THEMAINCIRCUITOFTHEPOWERCONVERTERANDTHECONTROLLER,WEREDESCRIBEDTHECONTROLSTRATEGIESOFTHECLOSEDLOOPROTORSPEEDCONTROLWITHPIALGORITHMANDBALANCINGTHEDISTRIBUTIONOFTHELOADSWITHFUZZYLOGICALGORITHMWEREGIVENTHETESTSRESULTSWEREALSOPRESENTEDITISSHOWNTHATTHERELATIVEDEVIATIONOFTHEAVERAGEDCSUPPLIEDCURRENTOFTHEPOWERCONVERTERINTHESWITCHEDRELUCTANCEMOTOR1ANDINTHESWITCHEDRELUCTANCEMOTOR2ISWITHIN10KEYWORDSSWITCHEDRELUCTANCE；MOTORCONTROL；SHEARER；COALMINE；ELECTRICALDRIVEIINTRODUCTIONTHEUNDERGROUNDSURROUNDINGSOFTHECOALMINESAREVERYEXECRABLEONESIDE,ITISTHEMOIST,HIGHDUSTANDINFLAMMABLESURROUNDINGSONTHEOTHERSIDE,THESPACEOFROADWAYISLIMITEDSINCEITISNECESSARYTOSAVETHEINVESTMENTOFEXPLOITINGCOALMINESSOTHATITISDIFFICULTTOMAINTAINTHEEQUIPMENTSINTHEMODERNCOALMINES,THEAUTOMATIZATIONEQUIPMENTSCOULDBEUSEDWIDELYTHEFAULTSOFTHEAUTOMATIZATIONEQUIPMENTSCOULDAFFECTTHEPRODUCTIONANDTHEBENEFITOFTHECOALMINESTHESHEARERISTHEMININGEQUIPMENTTHATCOALCOULDBECUTFROMTHECOALWALLTHETRADITIONALSHEARERWASDRIVENBYTHEHYDROSTATICTRANSMISSIONSYSTEMTHEFAULTRATIOOFTHEHYDROSTATICTRANSMISSIONSYSTEMISHIGHSINCETHEFLUIDINHYDROSTATICTRANSMISSIONSYSTEMCOULDBEPOLLUTEDEASILYTHEFAULTSOFTHEHYDROSTATICTRANSMISSIONSYSTEMCOULDAFFECTTHEPRODUCTIONANDTHEBENEFITOFTHECOALMINESDIRECTLYTHEFAULTRATIOOFTHEMOTORDRIVESYSTEMISLOWERTHANTHATOFTHEHYDROSTATICTRANSMISSIONSYSTEM,BUTITISDIFFICULTTOCOOLTHEMOTORDRIVESYSTEMINCOALMINESSINCETHEMOTORDRIVESYSTEMSHOULDBEINSTALLEDWITHINTHEFLAMEPROOFENCLOSUREFORSAFETYPROTECTIONTHEMOTORDRIVESYSTEMISALSOONEOFTHEPIVOTALPARTSINTHEAUTOMATIZATIONEQUIPMENTSTHEDEVELOPMENTOFTHENOVELTYPESOFTHEMOTORDRIVESYSTEMHADBEENATTACHED中国矿业大学2008届毕业设计第2页IMPORTANCETOBYTHECOALMINESTHESWITCHEDRELUCTANCEMOTORDRIVECOULDBECOMETHEMAINEQUIPMENTSFORADJUSTABLESPEEDELECTRICALDRIVESYSTEMINCOALMINES1,BECAUSEITHASTHEHIGHOPERATIONALRELIABILITYANDTHEFAULTTOLERANTABILITY2THESWITCHEDRELUCTANCEMOTORDRIVEMADEUPOFTHEDOUBLESALIENTPOLESWITCHEDRELUCTANCEMOTOR,THEUNIPOLARPOWERCONVERTERANDTHECONTROLLERISFIRMINTHEMOTORANDINTHEPOWERCONVERTERTHEREISNOBRUSHSTRUCTUREINTHEMOTORANDNOFAULTOFAMBIPOLARPOWERCONVERTERINTHEPOWERCONVERTER34THESWITCHEDRELUCTANCEMOTORDRIVECOULDBEOPERATEDATTHECONDITIONOFLACKEDPHASESFAULTDEPENDEDONTHEINDEPENDENCEOFEACHPHASEINTHEMOTORANDTHEPOWERCONVERTER5THEREISNOWINDINGINTHEROTORSOTHATTHEREISNOCOPPERLOSSINTHELOSSANDTHEREISONLYLITTLEIRONLOSSINTHEROTORITISEASYTOCOOLTHEMOTORSINCEITISNOTNECESSARYTOCOOLTHEROTORTHESHEARERDRIVENBYTHESWITCHEDRELUCTANCEMOTORDRIVEHADBEENDEVELOPEDTHEPAPERPRESENTEDTHEDEVELOPEDPROTOTYPEIISYSTEMCOMPONENTSTHEDEVELOPEDSWITCHEDRELUCTANCEMOTORSDRIVEFORTHEELECTRICALTRACTIONINSHEARERISATYPEOFTHEDOUBLESWITCHEDRELUCTANCEMOTORSPARALLELDRIVESYSTEMTHESYSTEMISMADEUPOFTWOSWITCHEDRELUCTANCEMOTORS,ACONTROLBOXINSTALLEDTHEPOWERCONVERTERANDTHECONTROLLERTHEADOPTEDTWOSWITCHEDRELUCTANCEMOTORSAREALLTHREEPHASE12/8STRUCTURESWITCHEDRELUCTANCEMOTOR,WHICHWERESHOWNINFIGURE1THETWOSWITCHEDRELUCTANCEMOTORSWEREPACKINGBYTHEEXPLOSIONPROOFENCLOSURE,RESPECTIVELYTHERATEDOUTPUTPOWEROFONEMOTORIS40KWATTHEROTORSPEED1155R/MIN,ANDTHEADJUSTABLESPEEDRANGEISFROM100R/MINTO1500R/MIN中国矿业大学2008届毕业设计第3页FIGURE1PHOTOGRAPHOFTHETWOTHREEPHASE12/8STRUCTURESWITCHEDRELUCTANCEMOTORTHEPOWERCONVERTERCONSISTSOFTWOTHREEPHASEASYMMETRICBRIDGEPOWERCONVERTERINPARALLELTHEIGBTSWEREUSEDASTHEMAINSWITCHESTHREEPHASE380VACPOWERSOURCEWASRECTIFICATEDANDSUPPLIEDTOTHEPOWERCONVERTERTHEMAINCIRCUITOFTHEPOWERCONVERTERWASSHOWNINFIGURE2中国矿业大学2008届毕业设计第4页FIGURE2MAINCIRCUITOFTHEPOWERCONVERTERINTHECONTROLLER,THEREWERETHEROTORPOSITIONDETECTIONCIRCUIT,THECOMMUTATIONCIRCUIT,THECURRENTANDVOLTAGEPROTECTIONCIRCUIT,THEMAINSWITCHES’GATEDRIVERCIRCUITANDTHEDIGITALCONTROLLERFORROTORSPEEDCLOSEDLOOPANDBALANCINGTHEDISTRIBUTIONOFTHELOADSIIICONTROLSTRATEGYTHETWOSWITCHEDRELUCTANCEMOTORCOULDALLDRIVETHESHEARERBYTHETRANSMISSIONOUTFITINTHESAMETRACTIONGUIDEWAYSOTHATTHEROTORSPEEDOFTHETWOSWITCHEDRELUCTANCEMOTORSCOULDBESYNCHRONIZEDTHECLOSEDLOOPROTORSPEEDCONTROLOFTHEDOUBLESWITCHEDRELUCTANCEMOTORSPARALLELDRIVESYSTEMCOULDBEIMPLEMENTEDBYPIALGORITHMINTHESWITCHEDRELUCTANCEMOTOR1,THETRIGGEREDSIGNALSOFTHEMAINSWITCHESINTHEPOWERCONVERTERAREMODULATEDBYPWMSIGNAL,THECOMPARISONOFTHEGIVENROTORSPEEDANDTHEPRACTICALROTORSPEEDAREMADEANDTHEDUTYRATIOOFPWMSIGNALAREREGULATEDASFOLLOWS,WHERE,ISTHEGIVENROTORSPEED,ISTHEPRACTICALROTORSPEED,ISTHEDIFFERENCEOFTHEROTORSPEED,ISTHEINCREMENTOFTHEDUTYRATIOOFPWMSIGNALOFTHESWITCHEDRELUCTANCEMOTOR1ATKTIME,ISTHEINTEGRALCOEFFICIENT,ISTHEPROPORTIONCOEFFICIENT,EKISTHEDIFFERENCEOFTHEROTORSPEEDATKTIME,EK1ISTHEDIFFERENCEOFTHEROTORSPEEDATK1TIME,D1KISTHEDUTYRATIOOFPWMSIGNALOFTHESWITCHEDRELUCTANCEMOTOR1ATKTIME,ANDD1K1ISTHEDUTYRATIOOFPWMSIGNALOFTHESWITCHEDRELUCTANCEMOTOR1ATK1TIMETHEOUTPUTPOWEROFTHESWITCHEDRELUCTANCEMOTORDRIVESYSTEMISAPPROXIMATELYINPROPORTIONTOTHEAVERAGEDCSUPPLIEDCURRENTOFTHEPOWERCONVERTERASFOLLOWS,WHERE,P2ISTHEOUTPUTPOWEROFTHESWITCHEDRELUCTANCEMOTORDRIVESYSTEM,IINISTHEAVERAGEDCSUPPLIEDCURRENTOFTHEPOWERCONVERTERINTHESWITCHEDRELUCTANCEMOTOR2,THETRIGGEREDSIGNALSOFTHEMAINSWITCHESINTHEPOWERCONVERTERAREALSOMODULATEDBYPWMSIGNALTHE
