Ukuqhubela phambili, ngokubhekisele koku, unokucinga ngokuqhubekeka kokufumana izatifikethi zobungcali, ezinjenge-CET-4 kunye ne-CET-6.Kwi-motor, i-motor inezigaba.Uluhlu apha alubhekiseli kumphakamo wemoto, kodwa kwisantya esihambelanayo semoto.Masithathe inqanaba lesi-4 lemoto njengomzekelo ukuze sibone intsingiselo ethile yochungechunge lweemoto.
Inqanaba le-4 motor libhekisela kwi-1-minute synchronous speed of motor = {i-frequency of power supply (50Hz) × imizuzwana engama-60} ÷ (izigaba zeemoto ÷ 2) = 3000 ÷ 2 = 1500 revolutions.Kumzi-mveliso, sisoloko sisiva ukuba injini inezigaba eziliqela.Ukuze siqonde, kufuneka siqale sazi ingcamango yesibonda: i-pole ibhekisela kwi-pole magnetic eyenziwe yi-rotor generator emva kokuba i-excitation current isetyenziswe kwi-coil ye-rotor.Ngamafutshane, kuthetha ukuba i-revolution nganye ye-rotor inokubangela imijikelezo emininzi yangoku kwithuba elinye lekhoyili ye-stator.Kuyimfuneko ukuvelisa amandla angama-50Hz ukuba inani leepali lihlukile Izantya ezahlukeneyo ziyafuneka.50Hz, 60 imizuzwana kunye nemizuzu (okt 3000) yahlulwe ngenani leepali linani lojikelezo lwenjini ngomzuzu.Kukwanjalo nakwimotor, eyinkqubo nje eguqukileyo yejenereyitha.
Inani leepali libonisa isantya se-synchronous senjini.I-2-pole synchronous speed yi-3000rmin, i-4-pole synchronous speed yi-1500rmin, i-6-pole synchronous speed yi-1000rmin, kunye ne-8-pole synchronous speed yi-750rmin.Inokuqondwa ukuba i-2-pole yinombolo yesiseko (3000), izibonda ezi-4 zinokuhlulwa kuphela zibe yi-2, izibonda ezi-6 zinokwahlulwa zibe yi-3, kwaye izibonda ezi-8 zinokwahlulwa zibe yi-4. Endaweni yeepali ezi-2, i-3000 kufuneka isetyenziselwa ukususa 2. Okukhona inani leepali zenjini, isantya esisezantsi senjini, kodwa sikhulu itorque yayo;xa ukhetha i-motor, kuya kufuneka uqwalasele i-torque yokuqala efunwa ngumthwalo.Umzekelo, i-torque efunekayo ukuqala ngomthwalo inkulu kunokuqala kungabikho mthwalo.Ukuba ingamandla aphezulu kunye nomthwalo onzima oqalayo, Isiqalo esisezantsi-ezantsi (okanye i-star delta start) nayo iyakuqwalaselwa;malunga nokuhambelana kwesantya kunye nomthwalo emva kokumisela inani leepali zemoto, kunokuqwalaselwa ukuqhuba ngebhanti ye-pulley ye-diameter eyahlukeneyo okanye nge-gear eguquguqukayo yesantya (i-Gearbox) Ukuba iimfuno zamandla omthwalo azikwazi ukuhlangabezana emva kokumisela. inani leepali zemoto ngokusebenzisa ibhanti okanye ukuhanjiswa kwegiya, ukusetyenziswa kwamandla ombane kufuneka kuthathelwe ingqalelo.
Inqanaba lesithathu le-AC motor lenziwe ikakhulu sistator kunye nerotor.Xa isigaba sesithathu se-AC sixhunyiwe kwi-stator, intsimi yamagnetic ejikelezayo iya kuveliswa.Umhlaba wemagnethi usoloko uneepali ezimbini (zikwanokuthiwa zivela ngambini), ezizezi, iN pole (i-North Pole) kunye ne-S pole (ipali esemazantsi), eyaziwa ngokuba yi-counter pole.Xa imowudi yokujija ye-AC motor stator magingxigingxi yahlukile, inani leepali zemagnethi zemagnethi ejikelezayo yahlukile.Inani leepali zamagnetic lichaphazela ngokuthe ngqo isantya semoto, kwaye ubudlelwane babo bu: isantya se-synchronous = 60 × I-logarithm yezinga lokuphindaphinda.Ukuba isantya se-synchronous se-motor yi-1500 rpm, ingabalwa ukuba i-pole logarithm yi-2, oko kukuthi, i-motor-pole motor ngokwe-formula engentla.Isantya se-synchronous kunye ne-pole logarithm ziiparamitha ezisisiseko zemoto, ezinokufumaneka kwi-nameplate yemoto.Ngenxa yokuba i-pole logarithm inokuchaphazela isantya semoto, isantya semoto sinokutshintshwa ngokutshintsha i-pole logarithm yemoto.
Kwimithwalo yolwelo efana neefeni kunye neepompo, olu hlobo lomthwalo lunophawu olubalaseleyo.Njengoko ilizwi lihamba, kuthiwa ukuchasa ukuguquka, oku kuthetha ukuba olu hlobo lomthwalo lunokumelana okukhulu nokuguqulwa kwemeko yangoku.Nangona i-torque efunekayo ukukhuthaza utshintsho olu hlobo lomthwalo aluphezulu, ludinga amandla amaninzi ukutshintsha imeko yangoku ngokukhawuleza.Ifana namanzi abilayo.Umlilo omncinci unokubilisa, kwaye kufanele ukuba uya kubilisa ngokukhawuleza, kwaye umlilo onokuthi ufuneke uya kuba mkhulu kakhulu.
Ezi ziinkcazo ezithile zothotho lweemoto.Kwifrikhwensi enikiweyo kunye nokuqala okwangoku, akukho budlelwane bungenakuthintelwa phakathi kwabo.Isiqalo sangoku sixhomekeke ekusekweni kwe-VF curve kunye nobude bexesha lokukhawulezisa.Kumthwalo wolwelo, ukusebenzisa igophe lamandla amaninzi kunokwenza isixhobo siqhube ukonga amandla ngakumbi kwaye sifumane inzuzo yezoqoqosho.
Ixesha lokuposa: Nov-08-2021
