Iimoto zeringi ezityibilikayo, ezaziwa ngokuba ziimoto ze-wound rotor, zingundoqo kwiimoto ezininziizicelo zothumelo olunamandla aphezulu.Zisetyenziswa kakhulu kumashishini ezinto eziluhlaza ezifanaukumbiwa kwemigodi, amashishini ezinto eziluhlaza zezimbiwa or amashishini okuncamathelisanjengesamente, ilimestone, kunye negypsum kwiinkqubo ezahlukeneyo zokutyumza, ukucinezela ngeroli, kunye nokusila. Zikwasetyenziswa kwiifeni ezinkulu, iimpompo, kunye nee-conveyors.
I-stator:
Ulwakhiwo lwe-stator lwee-squirrel-cage motors kunye nee-slip-ring motors lufana. Umahluko ophambili wee-slip-ring induction motors usekwe kwisakhiwo se-rotor kunye nemo yokusebenza. Xa ii-slip-ring motors zisetyenziswa kwiinkqubo ze-cascade, utshintsho oluthile kwi-stator lunokufumaneka kuba umbane wemoto uvela kulawulo lwamandla lwe-rotor yenye i-slip-ring motor, apho kufakwa khona ii-resistors zangaphandle kwi-rotor yayo.
I-Rotor:
Yintoni i-slip ring? I-slip ring motor idla ngokuba ne-rotor ene-stator ye-phase-wound. Olu hlobo lwe-rotor lune-double-layer distribution winding enezigaba ezintathu, eyenziwe zii-coils ezisetyenziswa kwi-AC generator. I-rotor core yenziwe ngee-laminations zentsimbi kwaye ineendawo zokwamkela ii-single-phase windings ezenziwe ngezigaba ezintathu. Ezi windings zahlulwe ngombane ngama-degrees ali-120. Nokuba i-stator ibolile kwizigaba ezibini, inani le-stator windings elibolile kwi-rotor liyafana nenani elikwi-stator kwaye lihlala likwizigaba ezintathu. Ezi windings zintathu zikhokelwa ngaphandle kwelinye icala ngaphakathi kwaye ziqhagamshelwe kwiirings ezintathu ezifakwe kwi-rotor shaft ngokwayo. Ii-terminals ezintathu ziqhagamshelana nezi rings zintathu ezibolile ngoncedo lwee-carbon brushes, ezifakwe kwiirings ngamacandelo entwasahlobo. Ezi brashi zintathu ze-carbon ziqhagamshelwe ngaphandle kwi-three-phase starting connection rheostat. I-slip ring kunye ne-external rheostat zinokunyusa ukumelana kwangaphandle kwesekethe ye-rotor, okwenza ukuba ibe nokumelana okuphezulu ngexesha lokuqalisa, ngaloo ndlela inyusa i-torque yokuqala. Phantsi kweemeko zokusebenza eziqhelekileyo, iringi yokutyibilika igqibezela ngokuzenzekelayo isekethe ngeringi yesingxobo sesinyithi. Iringi yesingxobo sesinyithi ityhalelwa ecaleni kweshaft, nto leyo ebangela ukuba amaringi amathathu adibane. Ukongeza, iibhrashi ziphakama ngokuzenzekelayo kwiringi yokutyibilika ukuze kuthintelwe ukulahleka kokungqubana kunye nokuguguleka. Phantsi kweemeko zokusebenza eziqhelekileyo, umsebenzi werotor yeringi yokutyibilika uyafana nowerotor ye-squirrel-cage.
Kuza kwenzeka ntoni ukuba kongezwe i-resistor yangaphandle? Kwimeko yee-motor ze-squirrel-cage induction, i-rotor resistance iphantsi kakhulu, ngoko ke i-current kwi-rotor iphezulu kakhulu, nto leyo eyenza i-starting torque ibe mbi ngakumbi. Nangona kunjalo, ukuba i-resistor yangaphandle yongezwa kwimeko yee-motor ze-slip-ring, i-rotor resistance iyanda xa kuqaliswa, ngoko ke i-rotor current iphantsi kwaye i-starting torque iphezulu. Ngaphezu koko, i-slip efunekayo ukuvelisa i-torque ephezulu ilingana ne-rotor resistance. Kwii-motor ze-slip-ring, ngokunyusa i-resistor yangaphandle ukuze kwandiswe i-rotor resistance, i-slip iyanda. Ngenxa ye-rotor resistor ephezulu, i-slip ingaphezulu, ngoko ke nokuba kwisantya esiphantsi, i-torque "yokutsala" inokufezekiswa. Xa i-motor ifikelela kwisantya sayo esisisiseko (isantya esipheleleyo), xa i-resistor yangaphandle isusiwe kwaye phantsi kweemeko zokusebenza eziqhelekileyo, imo yayo yokusebenza iyafana neyee-squirrel-cage induction motors. Ke ngoko, ezi moto zifanelekile kakhulu kwimithwalo ephezulu kakhulu ye-inertia, efuna phantse i-torque yokutsala i-zero kwisantya esiphantsi kunye nokukhawulezisa kwisantya esipheleleyo, kwaye ifunxa i-current encinci ngexesha elifutshane kakhulu.
Iingenelo zeemoto zokungenisa i-slip-ring:
Eyona nzuzo iphambili yeemoto ezisebenzisa i-slip-ring induction kukuba ziyakwazikulula ukulawula isantya.Nokuba isantya singekho, “i-torque yokutsala” inokufikelelwa. Xa kuthelekiswa nee-motor ze-induction ze-squirrel-cage, ine-torque yokuqala ephezulu. I-torque egcweleyo imalunga ne-200-250% ye-torque egcweleyo. Ii-motor ze-induction ze-squirrel-cage zithatha i-600-700% ye-current egcweleyo, kodwa i-starting current yee-motor ze-induction ze-slip-ring iphantsi kakhulu, malunga ne-250-350% ye-current egcweleyo.
Ixesha lokuthumela: Epreli-09-2025