Cov cav sib nqus nplhaib, tseem hu ua lub cev muaj zog rotor, yog lub hauv paus ntawm ntaucov ntawv thov kis tau hluav taws xob siab.Lawv siv dav hauv cov khoom siv raw khoom xws likev khawb av, kev lag luam raw khoom minerals or kev lag luam nplaumxws li cement, limestone, thiab gypsum hauv ntau yam kev sib tsoo, kev nias roller, thiab kev sib tsoo. Lawv kuj siv rau hauv cov kiv cua loj, twj tso kua mis, thiab cov khoom siv thauj khoom.
Lub stator:
Cov qauv stator ntawm cov cav squirrel-cage thiab cov cav slip-ring yog tib yam. Qhov sib txawv tseem ceeb ntawm cov cav slip-ring induction yog nyob rau hauv cov qauv rotor thiab hom kev ua haujlwm. Thaum cov cav slip-ring siv rau hauv cov kab ke cascade, qee qhov kev hloov pauv hauv stator yuav raug ntsib vim tias lub zog ntawm lub cev muaj zog los ntawm kev tswj hwm lub zog ntawm lub rotor ntawm lwm lub cav slip-ring, qhov twg cov resistors sab nraud tau teeb tsa rau ntawm nws lub rotor.
Lub rotor:
Lub nplhaib slip yog dab tsi? Lub cev muaj zog slip ring feem ntau muaj lub rotor nrog lub stator uas muaj theem. Hom rotor no muaj peb theem ob txheej faib winding, uas yog tsim los ntawm cov coils siv hauv lub tshuab hluav taws xob AC. Lub rotor core yog ua los ntawm cov hlau laminations thiab muaj qhov rau cov windings peb theem ib theem uas tau tsim. Cov windings no tau sib cais los ntawm hluav taws xob los ntawm 120 degrees. Txawm tias lub stator raug qhwv ua ob theem, tus lej ntawm stator windings qhwv rau ntawm rotor yog tib yam li tus lej hauv stator thiab ib txwm yog peb theem. Peb lub windings no tau coj tawm ntawm lwm qhov kawg sab hauv thiab txuas nrog peb lub insulated slip rings ntsia rau ntawm lub rotor ncej nws tus kheej. Peb lub terminals tiv tauj peb lub slip rings no nrog kev pab los ntawm cov txhuam carbon, uas tau kho rau ntawm cov nplhaib los ntawm cov khoom caij nplooj ntoos hlav. Peb lub txhuam carbon no tau txuas ntxiv sab nraud rau peb theem pib txuas rheostat. Lub nplhaib slip thiab lub rheostat sab nraud tuaj yeem ua rau muaj kev tiv thaiv sab nraud ntawm lub rotor circuit, ua rau nws muaj kev tiv thaiv siab dua thaum pib, yog li ua rau lub zog pib nce ntxiv. Nyob rau hauv ib txwm ua haujlwm, lub nplhaib slip yuav ua tiav lub voj voog los ntawm lub nplhaib hlau. Lub nplhaib hlau raug thawb raws tus ncej, ua rau peb lub nplhaib sib cuag. Tsis tas li ntawd, cov txhuam yuav nqa tawm ntawm lub nplhaib slip kom tsis txhob muaj kev sib txhuam thiab hnav. Nyob rau hauv ib txwm ua haujlwm, lub luag haujlwm ntawm lub nplhaib slip rotor zoo ib yam li ntawm lub rotor squirrel-cage.
Yuav ua li cas yog tias ntxiv ib lub resistor sab nraud? Hauv cov motors squirrel-cage induction, qhov tsis kam ntawm rotor qis heev, yog li tam sim no hauv rotor siab heev, uas ua rau lub zog pib tsis zoo. Txawm li cas los xij, yog tias ntxiv ib lub resistor sab nraud rau hauv cov motors slip-ring, qhov tsis kam ntawm rotor nce ntxiv thaum pib, yog li tam sim no rotor qis thiab lub zog pib yog qhov siab tshaj plaws. Ntxiv mus, qhov slip uas xav tau los tsim lub zog siab tshaj plaws yog proportional rau qhov tsis kam ntawm rotor. Hauv cov motors slip-ring, los ntawm kev nce lub resistor sab nraud kom nce lub zog rotor, qhov slip nce ntxiv. Vim yog qhov tsis kam ntawm rotor siab, qhov slip loj dua, yog li txawm tias ntawm qhov ceev qis, "rub tawm" torque tuaj yeem ua tiav. Thaum lub cev muaj zog mus txog nws qhov ceev ceev (qhov ceev tag nrho), thaum lub resistor sab nraud raug tshem tawm thiab nyob rau hauv cov xwm txheej ua haujlwm ib txwm muaj, nws hom kev ua haujlwm zoo ib yam li cov motors squirrel-cage induction. Yog li ntawd, cov motors no zoo tshaj plaws rau cov khoom siv inertia siab heev, uas xav tau yuav luag xoom rub tawm torque ntawm qhov ceev qis thiab kev nrawm mus rau qhov ceev tag nrho, thiab nqus cov tam sim no tsawg kawg nkaus hauv lub sijhawm luv luv.
Cov txiaj ntsig ntawm cov tshuab hluav taws xob induction slip-ring:
Qhov zoo tshaj plaws ntawm cov motors induction slip-ring yog tias lawv tuaj yeemyooj yim tswj tau qhov ceev.Txawm tias thaum xoom qhov ceev, "rub tawm torque" tuaj yeem ua tiav. Piv nrog cov squirrel-cage induction motors, nws muaj lub zog pib siab dua. Lub zog tag nrho yog kwv yees li 200-250% ntawm lub zog tag nrho. Cov squirrel-cage induction motors suav txog 600-700% ntawm cov tam sim no tag nrho, tab sis lub zog pib ntawm cov slip-ring induction motors qis heev, kwv yees li 250-350% ntawm cov tam sim no tag nrho.
Lub sijhawm tshaj tawm: Plaub Hlis-09-2025