Kungani ukujikajika kwenjini enezigaba ezintathu kusha uma ishoda ngesigaba?

Ingabe yamanje ingaba nkulu kangakanani ekuxhumekeni kwenkanyezi noxhumo lwe-delta?

Kunoma iyiphi i-motor, inqobo nje uma ukusebenza kwangempela kwe-motor ingeqi i-current rated, injini iphephile uma kuqhathaniswa. Uma i-curse idlula i-current rated, i-motor winding isengozini yokushiswa. Phakathi kwamaphutha ama-motor ezigaba ezintathu, ukuntuleka kwesigaba kuwuhlobo olujwayelekile lwephutha. Kodwa-ke, ngokuvela kwemishini yokuvikela ukusebenza kwezimoto, izinkinga ezinjalo ziye zagwenywa kangcono.

Kodwa-ke, uma inkinga yokuntuleka kwesigaba yenzeka emotweni yezigaba ezintathu, kuzoba nokubonakaliswa kwephutha ukuthi i-winding ihlale ishiswa phakathi nesikhathi esifushane kakhulu. Ezindleleni ezihlukene zokuxhuma, imithetho yokushiswa kwamawindi ihlukile. Okwenzeni ama-motor winding ekuxhumekeni kwe-delta, lapho inkinga yokuntuleka kwesigaba kwenzeka, isigaba esisodwa sizoshiswa kuyilapho ezinye izigaba ezimbili zisaqinile; kumawindi axhunywe inkanyezi, amawindi ezigaba ezimbili azoshiswa kanti esinye isigaba asiguquki.

Ngama-windings ashile, isizathu esiyinhloko ukuthi i-current they bear idlula i-current rated. Kodwa ukuthi inkulu kangakanani le nkinga yamanje kuwumbuzo abasebenzisi abaningi benethiwekhi abakhathazeke kakhulu ngawo. Wonke umuntu uzama ukuba nokuqonda komthamo ngokusebenzisa amafomula athile okubala. Kubuye kube nochwepheshe abaningi abenze ukuhlaziya okukhethekile ngalesi sici. Kodwa-ke, ekubaleni okuhlukene nasekuhlaziyeni, kuhlale kunezici ezithile ezingenakulinganiswa ezizodala ukuphambuka okukhulu kumanje, okubuye kube yisihloko sempikiswano engapheli.

Uma i-motor iqala futhi isebenza ngokujwayelekile, i-current phase alternating yamanje ingumthwalo olinganayo, futhi imisinga yezigaba ezintathu ilingana ngobukhulu futhi ingaphansi noma ilingana nenani elilinganiselwe. Uma isigaba esisodwa siphukile, okwamanje izintambo zesigaba esisodwa noma ezimbili ziba zero, futhi okwamanje izintambo zesigaba ezisele zizokhula. Sithatha umthwalo ngesikhathi senqubo yokusebenza kukagesi njengomthwalo olinganisiwe, futhi sihlaziye ngokufanelekile isimo samanje kusukela ebudlelwaneni bokusabalalisa kokumelana nama-winging kanye ne-torque ngemva kokuphumula kwesigaba.

Okwenjini ekuxhunyweni kwe-delta, uma isebenza ngokujwayelekile enanini elilinganiselwe, isigaba samanje seqembu ngalinye lama-windings siphindwe izikhathi ezingu-1/1.732 kunamanje okulinganiselwe (umugqa wamanje) wenjini. Uma isigaba esisodwa sinqanyuliwe, okungukuthi, isimo lapho ama-winding ezigaba ezimbili axhunywe ochungechungeni bese ngokuhambisana nesinye isigaba kwenzeka. I-current of the winding ethwala i-voltage yolayini iyodwa izofinyelela izikhathi ezingaphezu kwezingu-2.5 kunamanje olinganiselwe, okuzokwenza ukuthi lokhu kusonteka kushiswe phakathi nesikhathi esifushane kakhulu. Imisinga yamanye ama-winding ezigaba ezimbili mancane uma kuqhathaniswa, futhi ngokuvamile asesimweni esihle.

Okwenjini ekuxhumekeni kwenkanyezi, lapho isigaba esithile sinqanyulwa, amanye ama-winding ezigaba ezimbili axhunywe ochungechungeni ekunikezeni amandla. Uma umthwalo uhlala ungashintshiwe, i-current yesigaba esinqanyuliwe ingu-zero, futhi i-current yezinye izigaba ezimbili ezijikelezayo zikhuphuka izikhathi ezingaphezu kwezingu-2 zamanje ezilinganisiwe, okubangela ukuthi ama-windings ezigaba ezimbili ashise futhi ashise.

Kodwa-ke, kusukela ekuhlaziyweni kwayo yonke inqubo yokuntuleka kwesigaba, izici ezihlukahlukene ezifana nama-windings ahlukene, izimo ezihlukene zekhwalithi zama-windings, kanye nesimo sangempela somthwalo sizoholela ekushintsheni okuyinkimbinkimbi kumanje. Akunakwenzeka ukubala nokuyihlaziya kusuka kufomula elula. Singakwazi ukwenza ukuhlaziya okunzima kwezinye izimo ezidlulele namamodeli afanelekile.