Mota dzemhete dzinotsvedza, inozivikanwawo semawound rotor motors, ndiwo musimboti wevakawandamashandisirwo ekutumira maturusi ane simba guru.Anoshandiswa zvakanyanya mumaindasitiri ezvinhu zvakagadzirwa sengemigodhi, maindasitiri ezvicherwa or maindasitiri ekunamirase simende, limestone, uye gypsum mumabasa akasiyana-siyana ekupwanya, kudzvanya, uye kukuya. Zvinoshandiswawo mumafeni makuru, mapombi, uye ma conveyor.
Stator:
Maumbirwo e stator emamota e squirrel-cage nemamota e slip-ring akafanana. Musiyano mukuru wemamota e induction e slip-ring uri muchimiro che rotor uye operation mode. Kana mamota e slip-ring achishandiswa muma cascade systems, dzimwe shanduko mu stator dzinogona kuitika nekuti simba remota rinobva pakudzora simba re rotor yeimwe mota ye slip-ring, uko ma resistors ekunze anoiswa pa rotor yayo.
Rotor:
Chii chinonzi slip ring? Mota ye slip ring inowanzova ne rotor ine phase-wound stator. Rudzi urwu rwe rotor rune three-phase double-layer distribution winding, iyo inoumbwa nema coil anoshandiswa mu AC generator. Rotor core yakagadzirwa nesimbi laminations uye ine mipata yekuisa ma three-phase single-phase windings akaumbwa. Ma windings aya akaparadzaniswa nemagetsi ne 120 degrees. Kunyangwe stator ikakuvadzwa muzvikamu zviviri, huwandu hwe stator windings wound pa rotor hwakafanana nenhamba iri mu stator uye inogara iri three-phase. Ma windings matatu aya anotungamirwa kubva kune rimwe divi mukati uye akabatanidzwa kune matatu insulated slip rings akaiswa pa rotor shaft pachayo. Ma terminals matatu anobata aya matatu slip rings nerubatsiro rwema carbon brushes, ayo akaiswa pama rings ne spring components. Aya matatu carbon brushes anobatanidzwawo kunze kune three-phase starting connection rheostat. Slip ring ne external rheostat zvinogona kuwedzera external resistance ye rotor circuit, zvichiita kuti ive ne resistance yakakwira panguva yekutanga, nokudaro zvichiwedzera starting torque. Mumamiriro ezvinhu akajairwa ekushanda, slip ring inopedzisa otomatiki circuit kuburikidza ne sleeve ring yesimbi. Ring yesimbi inosundirwa pamwe chete ne shaft, zvichiita kuti ring nhatu dzibatane. Pamusoro pezvo, mabhurashi anosimuka otomatiki kubva pa slip ring kudzivirira kurasikirwa nekukweshana uye kusakara. Mumamiriro ezvinhu akajairwa ekushanda, basa re slip ring rotor rakafanana nere rotor ye squirrel-cage.
Chii chichaitika kana resistor yekunze ikawedzerwa? Kana iri squirrel-cage induction motors, rotor resistance yakaderera kwazvo, saka current iri murotor yakanyanya kukwira, izvo zvinoita kuti starting torque iwedzere kuipa. Zvisinei, kana resistor yekunze ikawedzerwa kana iri slip-ring motors, rotor resistance inowedzera pakutanga, saka rotor current yakaderera uye starting torque yakanyanya. Uyezve, slip inodiwa kuti pave ne torque yepamusoro inoenderana ne rotor resistance. Mu slip-ring motors, nekuwedzera resistor yekunze kuti iwedzere rotor resistance, slip inowedzera. Nekuda kwe high rotor resistance, slip yakakura, saka kunyangwe pakumhanya kwakaderera, "pull-out" torque inogona kuwanikwa. Kana mota yasvika pakumhanya kwayo kwekutanga (full rated speed), apo external resistor inobviswa uye pasi pemamiriro ekushanda akajairwa, operation mode yayo yakafanana neye squirrel-cage induction motors. Nokudaro, idzi motors dzakakodzera zvakanyanya kune inertia loads yakakwira, iyo inoda inenge zero pull-out torque pakumhanya kwakaderera uye kukurumidza kusvika pakumhanya kwakazara, uye inotora minimum current munguva pfupi kwazvo.
Mabhenefiti emota dzinopinza dzinotsvedza nemhete:
Chinhu chikuru chinobatsira nemamota e induction anotsvedza ndekuti anogonakudzorwa zviri nyore mukumhanya.Kunyangwe kana pasina kumhanya, "torque yekudhonza" inogona kuwanikwa. Kana ichienzaniswa nemamota e-squirrel-cage induction, ine torque yepamusoro yekutanga. Torque yakazara inenge 200-250% yetorque yakazara. Mamota e-squirrel-cage induction anoita 600-700% ye-full-load current, asi starting current yemamota e-slip-ring induction yakaderera zvikuru, inenge 250-350% ye-full-load current.
Nguva yekutumira: Kubvumbi-09-2025