Ngenxa yokuxinana kwazo kunye noxinaniso lwetorque ephezulu, iimotor zemagnethi ezisisigxina zisetyenziswa ngokubanzi kwizicelo ezininzi zemizi-mveliso, ngakumbi kwiinkqubo zokuqhuba ezisebenza kakhulu ezifana neenkqubo zokuqhutywa kweenqanawa ezingaphantsi kolwandle.Iimotor ze-synchronous zemagnethi ezisisigxina azifuni ukusetyenziswa kwamakhonkco e-slip ukwenzela ukuvuselela, ukunciphisa ukugcinwa kwe-rotor kunye nelahleko.Iimotor ze-synchronous zemagnethi ezisisigxina zisebenza kakuhle kwaye zifanelekile kwiinkqubo zokuqhuba ezisebenza kakhulu ezifana nezixhobo zoomatshini be-CNC, iirobhothi kunye neenkqubo zokuvelisa ezizenzekelayo kushishino.
Ngokubanzi, uyilo kunye nokwakhiwa kweemotor ezisisigxina zemagnethi ezihambelanayo kufuneka zithathele ingqalelo zombini isitator kunye nesakhiwo serotor ukuze ufumane imotor esebenza kakhulu.
Ubume bemagnethi esisigxina ye-synchronous motor
Uxinaniso lokuguquguquka kwemagnethi yomoya:Ukumiselwa ngokoyilo lwee-asynchronous motors, njl., Uyilo lwe-rotors yamagnetic esisigxina kunye nokusetyenziswa kweemfuno ezikhethekileyo zokutshintsha i-stator windings. Ukongezelela, kucingelwa ukuba i-stator yi-slotted stator.Ubuninzi be-gap flux yomoya bukhawulelwe ngokuzaliswa kwe-stator core.Ngokukodwa, i-peak flux density inqunyelwe ububanzi bamazinyo e-gear, ngelixa umva we-stator umisela ubuninzi be-flux epheleleyo.
Ngaphaya koko, inqanaba lokuzalisa elivumelekileyo lixhomekeke kwisicelo.Ngokwesiqhelo, iimotor ezinomgangatho ophezulu wokuxinana zinoxinzelelo lwe-flux esezantsi, ngelixa iimotor ezilungiselelwe ubuninzi betorque ezinobuninzi obuphezulu.I-peak air gap flux density idla ngokuba kuluhlu lwe-0.7-1.1 Tesla.Kufuneka kuqatshelwe ukuba oku kukuxinana kwe-flux iyonke, okt isixa se-rotor kunye ne-stator fluxes.Oku kuthetha ukuba ukuba i-armature reaction force iphantsi, oko kuthetha ukuba i-torque yokulungelelanisa iphezulu.
Nangona kunjalo, ukuze kuphunyezwe igalelo elikhulu le-torque yokuthandabuza, amandla okusabela kwe-stator kufuneka abe mkhulu.Iiparamitha zoomatshini zibonisa ukuba i-m enkulu kunye ne-inductance encinci ye-L ifunwa kakhulu ukufumana i-torque yokulungelelanisa.Oku kudla ngokulungele ukusebenza ngaphantsi kwesantya esisezantsi njengoko i-inductance ephezulu inciphisa umba wamandla.
Imathiriyeli yemagnethi esisigxina:
Iimagnethi zidlala indima ebalulekileyo kwizixhobo ezininzi, ngoko ke, ukuphucula ukusebenza kwezi zixhobo kubaluleke kakhulu, kwaye ingqwalasela okwangoku igxininise kumhlaba onqabileyo kunye nokuguqulwa kwezinto ezisekelwe kwisinyithi ezinokuthi zifumane iimagnethi ezisisigxina ezineempawu eziphezulu zemagneti.Ngokuxhomekeke kwitekhnoloji, oomazibuthe baneempawu ezahlukeneyo zemagnethi kunye nezoomatshini kwaye babonisa ukuxhathisa kokutya okwahlukileyo.
I-NdFeB (Nd2Fe14B) kunye ne-Samarium Cobalt (i-Sm1Co5 kunye ne-Sm2Co17) iimagnethi zezona zixhobo ziphezulu zemagnethi ezisisigxina ezikhoyo namhlanje.Kwiklasi nganye yeemagnethi zomhlaba ezinqabileyo kukho iindidi ngeendidi zamabakala.Iimagnethi zeNdFeB zathengiswa ekuqaleni kweminyaka yoo-1980.Zisetyenziswa ngokubanzi namhlanje kwizicelo ezininzi ezahlukeneyo.Iindleko zale mveliso umazibuthe (ngemveliso yamandla nganye) ithelekiseka naleyo yeemagnethi zeferrite, kwaye ngokwekhilogram nganye, iimagnethi zeNdFeB zibiza malunga ne-10 ukuya kwangama-20 ngokuphindwe kabini njengemagnethi yeferrite.
Ezinye iipropati ezibalulekileyo ezisetyenziselwa ukuthelekisa iimagnethi ezisisigxina zezi: i-remanence (uMnu), elinganisa amandla ombane wemagnethi osisigxina, amandla okunyanzela (Hcj), ukukwazi kwezinto eziphathekayo ukuxhathisa i-demagnetization, imveliso yamandla (BHmax), ubuninzi bamandla ombane. ; Ubushushu beCurie (TC), iqondo lobushushu apho imathiriyeli ilahlekelwa yimagnethi yayo.Iimagnethi zeNeodymium zineremanence ephezulu, ukunyanzeliswa okuphezulu kunye nemveliso yamandla, kodwa ngokubanzi luhlobo olusezantsi lobushushu beCurie, iNeodymium isebenza neTerbium kunye neDysprosium ukuze kugcinwe iipropathi zayo zemagneti kumaqondo obushushu aphezulu.
Uyilo lweeMoto eziNxibeleleyo zeMagnet
Kuyilo lwe-magnetic esisigxina ye-synchronous motor (PMSM), ukwakhiwa kwe-rotor yamagnetic esisigxina isekelwe kwisakhelo se-stator ye-motor induction yesigaba sesithathu ngaphandle kokutshintsha i-geometry ye-stator kunye ne-windings.Iinkcukacha kunye nejometri ziquka: isivinini semoto, i-frequency, inani lezibonda, ubude be-stator, i-diameter yangaphakathi nangaphandle, inani le-rotor slots.Uyilo lwe-PMSM lubandakanya ukulahleka kobhedu, umva we-EMF, ukulahleka kwentsimbi kunye ne-self and mutual inductance, i-magnetic flux, ukumelana ne-stator, njl.
Ukubalwa kwe-self-inductance kunye ne-inductance efanayo:
I-Inductance L inokuchazwa njengomlinganiselo we-flux linkage kwi-flux-producing current I, e-Henrys (H), elingana ne-Weber nge-ampere nganye. I-inductor sisixhobo esisetyenziselwa ukugcina amandla kwintsimi yamagnetic, efana nendlela i-capacitor egcina ngayo amandla kwintsimi yombane. Ii-inductors zihlala zibandakanya iikhoyili, zihlala zinxeba malunga ne-ferrite okanye i-ferromagnetic core, kwaye ixabiso labo le-inductance lihambelana kuphela nesakhiwo somzimba somqhubi kunye nokunyanzeliswa kwezinto apho i-magnetic flux idlula.
Amanyathelo okufumana i-inductance zezi zilandelayo:1. Masithi kukho umsinga I kwi-conductor.2. Sebenzisa umthetho we-Biot-Savart okanye umthetho we-loop we-Ampere (ukuba ukhona) ukumisela ukuba i-B ine-symmetric ngokwaneleyo.3. Bala itotali yeflux eqhagamshela zonke iisekethe.4. Phindaphinda-phinda umbane wemagnethi uwonke ngenani leelophu ukufumana unxibelelwano lwe-flux, kwaye uphumeze uyilo lwenjini esisigxina yemagnethi ehambelanayo ngokuvavanya iiparamitha ezifunekayo.
Uphononongo lufumanise ukuba uyilo lokusebenzisa i-NdFeB njengesixhobo se-AC esisisigxina se-AC sonyusa i-magnetic flux eyenziwe kwi-gap yomoya, okukhokelela ekunciphiseni kweradiyasi yangaphakathi ye-stator, ngelixa i-radius yangaphakathi ye-stator isebenzisa i-samarium cobalt ngokusisigxina. Isixhobo se-magnetic rotor sasisikhulu.Iziphumo zibonisa ukuba ukulahleka kobhedu okusebenzayo kwi-NdFeB kuncitshiswe nge-8.124%.Kwi-cobalt ye-samarium njengento engapheliyo yamagnetic, i-magnetic flux iya kuba yintlukwano ye-sinusoidal.Ngokubanzi, uyilo kunye nokwakhiwa kweemotor ezisisigxina zemagnethi ezihambelanayo kufuneka zithathele ingqalelo zombini isitator kunye nesakhiwo serotor ukuze ufumane imotor esebenza kakhulu.
ukuququmbela
Imagnethi esisigxina ye-synchronous motor (PMSM) yimoto ehambelanayo esebenzisa izixhobo eziphakamileyo zemagneti kwimagneti, kwaye ineempawu zokusebenza okuphezulu, ulwakhiwo olulula, kunye nolawulo olulula.Le njini isisigxina yemagnethi ehambelanayo inezicelo ekutsaleni, kwiimoto, kwiirobhothi, nakwitekhnoloji ye-aerospace. Uxinaniso lwamandla eemotor ezisisigxina zemagnethi ezilungelelanisiweyo ziphezulu kunolo lweemotor zokungenisa ezikumlinganiselo ofanayo kuba akukho mandla estator anikezelweyo ekuveliseni umhlaba wemagnethi. .
Okwangoku, ukuyila kwe-PMSM akufuni kuphela amandla aphezulu, kodwa kunye nobunzima obuphantsi kunye nomzuzu ophantsi we-inertia.
Ixesha lokuposa: Jul-01-2022