Da farko, muna buƙatar iyakance iyakokin tattaunawar don guje wa sanya ta zama ba daidai ba. Janareta da aka tattauna a nan yana nufin janareta mai aiki da AC mai matakai uku, wanda daga baya ake kiransa kawai da "janereta".
Wannan nau'in janareta ya ƙunshi aƙalla manyan sassa uku, waɗanda za a ambata a cikin tattaunawar mai zuwa:
Babban janareta, an raba shi zuwa babban stator da babban rotor; Babban rotor yana samar da filin maganadisu, kuma babban stator yana samar da wutar lantarki don samar da kaya; Mai fitarwa, an raba shi zuwa stator mai fitarwa da rotor; Mai kunna wutar yana samar da filin maganadisu, mai juyawa yana samar da wutar lantarki, kuma bayan an gyara shi ta hanyar mai juyawa, yana samar da wutar lantarki ga babban rotor; Mai daidaita wutar lantarki ta atomatik (AVR) yana gano ƙarfin fitarwa na babban janareta, yana sarrafa kwararar wutar lantarki ta hanyar mai kunna wutar lantarki, kuma yana cimma burin daidaita ƙarfin fitarwa na babban stator.
Bayanin aikin daidaita ƙarfin lantarki na AVR
Manufar aiki ta AVR ita ce kiyaye ƙarfin lantarki mai ƙarfi na janareta, wanda aka fi sani da "mai daidaita ƙarfin lantarki".
Aikinsa shine ƙara yawan ƙarfin stator na exciter lokacin da ƙarfin fitarwa na janareta ya yi ƙasa da ƙimar da aka saita, wanda yayi daidai da ƙara yawan ƙarfin motsawa na babban rotor, wanda ke haifar da babban ƙarfin janareta ya tashi zuwa ƙimar da aka saita; Akasin haka, rage ƙarfin motsawa kuma bari ƙarfin lantarki ya ragu; Idan ƙarfin fitarwa na janareta yayi daidai da ƙimar da aka saita, AVR yana kula da fitarwar da ke akwai ba tare da daidaitawa ba.
Bugu da ƙari, bisa ga dangantakar mataki tsakanin halin yanzu da ƙarfin lantarki, ana iya rarraba nauyin AC zuwa rukuni uku:
Nauyin juriya, inda wutar lantarki ke cikin mataki tare da ƙarfin lantarki da aka yi amfani da shi; Nauyin inductive, matakin halin yanzu yana raguwa a bayan ƙarfin lantarki; Nauyin capacitive, matakin halin yanzu yana gaba da ƙarfin lantarki. Kwatanta halaye uku na kaya yana taimaka mana mu fahimci nauyin capacitive sosai.
Ga kayan da ke jure wa juriya, girman nauyin, girman wutar lantarki da ake buƙata don babban rotor (domin daidaita ƙarfin fitarwa na janareta).
A cikin tattaunawar da za ta biyo baya, za mu yi amfani da wutar motsawa da ake buƙata don lodin juriya a matsayin ma'aunin tunani, wanda ke nufin cewa manyan ana kiran su da manyan; Muna kiran su ƙarami fiye da shi.
Idan nauyin janareta ya kasance mai aiki, babban na'urar juyawa (rotor) zai buƙaci ƙarin ƙarfin motsawa domin janareta ya ci gaba da riƙe ƙarfin fitarwa mai ƙarfi.
Nauyin ƙarfin aiki
Idan janareta ta haɗu da nauyin capacitive, ƙarfin motsawar da babban rotor ke buƙata ya ƙanƙanta, wanda ke nufin dole ne a rage ƙarfin motsawar domin daidaita ƙarfin fitarwa na janareta.
Me yasa hakan ya faru?
Ya kamata mu tuna cewa wutar lantarki da ke kan nauyin capacitive tana gaban wutar lantarki, kuma waɗannan kwararar wutar lantarki masu jagora (waɗanda ke gudana ta cikin babban stator) za su samar da wutar lantarki da aka haifar a kan babban rotor, wanda hakan ya faru da cewa an haɗa shi da wutar lantarki mai motsawa, wanda ke haɓaka filin maganadisu na babban rotor. Don haka dole ne a rage wutar lantarki daga mai fitarwa don kiyaye ƙarfin fitarwa mai ƙarfi na janareta.
Mafi girman nauyin capacitive, haka nan ƙaramin fitowar exciter; Lokacin da nauyin capacitive ya ƙaru zuwa wani mataki, dole ne a rage fitowar exciter zuwa sifili. Fitar exciter ɗin sifili ne, wanda shine iyakar janareta; A wannan lokacin, ƙarfin fitarwa na janareta ba zai yi karko ba, kuma wannan nau'in wutar lantarki bai cancanta ba. Wannan iyakancewa kuma ana kiransa da 'ƙarƙashin iyakancewar excitation'.
Janareta zai iya karɓar iyakantaccen nauyin kaya ne kawai; (Tabbas, ga takamaiman janareta, akwai kuma ƙuntatawa akan girman nauyin juriya ko inductive.)
Idan wani aiki yana damun nauyin capacitive, yana yiwuwa a zaɓi amfani da hanyoyin samar da wutar lantarki na IT tare da ƙaramin ƙarfin aiki a kowace kilowatt, ko kuma a yi amfani da inductor don biyan diyya. Kada a bar injin janareta ya yi aiki kusa da yankin "ƙarƙashin iyakokin motsawa".
Lokacin Saƙo: Satumba-07-2023
