Ukuqhubeka, ngokubhekisela kulokhu, ungase ucabange ngokuqhubeka kokuthola izitifiketi zobuchwepheshe, njenge-CET-4 ne-CET-6. Emotweni, injini nayo inezigaba. Uchungechunge lapha alubhekiseli ekuphakameni kwe-motor, kodwa isivinini esivumelanayo se-motor. Ake sithathe injini yeleveli 4 njengesibonelo ukuze sibone incazelo ethile yochungechunge lwezimoto.
I-Level 4 motor ibhekisela ku-1-minute synchronous speed of motor = {imvamisa yokunikezwa kwamandla (50Hz) × imizuzwana engu-60} ÷ (izigaba zamamotho ÷ 2) =3000 ÷ 2 = ama-revolutions angu-1500. Embonini, sivame ukuzwa ukuthi injini inezigaba eziningana. Ukuze siqonde, kufanele siqale sazi umqondo wesigxobo: isigxobo sibhekisela esigxotsheni kazibuthe esakhiwe yi-rotor ye-generator ngemva kokuba i-excitation current isetshenziswe kukhoyili ye-rotor. Ngamafuphi, kusho ukuthi inguquko ngayinye ye-rotor ingakwazi ukuheha imijikelezo eminingana yamanje ekujikeni okukodwa kwekhoyili ye-stator. Kudingeka ukukhiqiza amandla angu-50Hz uma inani lezigxobo lihlukile Kudingeka isivinini esihlukile. 50Hz, imizuzwana engama-60 namaminithi (okungukuthi 3000) ihlukaniswe ngenani lezigxobo inani lama-revolutions of the motor ngomzuzu. Kungokufanayo nangenjini, okuwuhlelo nje oluphambene nejeneretha.
Inombolo yezigxobo ibonisa isivinini esivumelanayo senjini. Ijubane le-2-pole synchronous lingu-3000rmin, ijubane le-4-pole synchronous liyi-1500rmin, ijubane le-6-pole synchronous lingu-1000rmin, kanti i-8-pole synchronous speed ngu-750rmin. Kungaqondwa ukuthi i-2-pole iyinombolo yesisekelo (3000), izigxobo ezingu-4 zingahlukaniswa zibe yizi-2, izigxobo ezingu-6 zingahlukaniswa zibe ngu-3, nezigxobo ezingu-8 zingahlukaniswa zibe 4. Esikhundleni sezigxobo ezi-2, u-3000 kufanele usetshenziselwe ukususa u-2. Uma inani lezigxobo ze-motor, ijubane le-motor liyancipha, kodwa ijubane elikhulu le-torque liyancipha; lapho ukhetha i-motor, kufanele ucabangele i-torque yokuqala edingwa umthwalo. Isibonelo, i-torque edingekayo ukuqala ngomthwalo inkulu kunaleyo yokungalayishi. Uma iqala ngamandla amakhulu nomthwalo osindayo, Ukuqala kokuya phansi (noma inkanyezi ye-delta yokuqala) nakho kuzocatshangelwa; ngokuqondene nokumataniswa kwejubane nomthwalo ngemuva kokunquma inani lezigxobo zemoto, kungabhekwa njengokushayela ngebhande lebhande elinobubanzi obuhlukile noma ngegiya lejubane eliguquguqukayo (Ibhokisi legiya) Uma izidingo zamandla omthwalo zingakwazi ukuhlangatshezwana nazo ngemva kokunquma inani lezigxobo zemoto ngokusebenzisa ibhande noma ukudluliselwa kwegiya, amandla okusebenzisa emoto kufanele acatshangelwe.
Isigaba sesithathu se-AC motor ikakhulukazi sakhiwe yi-stator ne-rotor. Uma i-AC yezigaba ezintathu ixhunywe ku-stator, kuzokwenziwa inkambu yakazibuthe ejikelezayo. Indawo kazibuthe ihlale inezigxobo ezimbili (futhi kungashiwo ukuthi zivela ngazimbili), okuyi-N pole (North Pole) kanye ne-S pole (isigxobo esiseningizimu) , eyaziwa nangokuthi i-counter pole. Lapho imodi yokujikajika ye-AC motor stator winding ihlukile, inani lezigxobo kazibuthe zenkundla kazibuthe ezungezayo lihlukile. Inombolo yezigxobo kazibuthe ithinta ngokuqondile isivinini semoto, futhi ubuhlobo bazo buwukuthi: isivinini esivumelanayo = 60 × I-logarithm yezinga le-Frequency. Uma isivinini se-synchronous se-motor singama-1500 rpm, singabalwa ukuthi i-pole logarithm ingu-2, okungukuthi, i-motor 4-pole ngokusho kwefomula engenhla. Isivinini se-synchronous kanye ne-pole logarithm yimingcele eyisisekelo yenjini, engatholakala ku-nameplate yemoto. Ngenxa yokuthi i-pole logarithm ingathinta ijubane lemoto, ijubane lemoto lingashintshwa ngokushintsha i-pole logarithm yemoto.
Ngomthwalo owuketshezi njengamafeni namaphampu, lolu hlobo lomthwalo lunezici ezivelele. Njengoba isisho sisho, kubizwa ngokuthi ukumelana nokuguquguquka, okusho ukuthi lolu hlobo lomthwalo lunokumelana okukhulu nokuguqulwa kwesimo samanje. Nakuba i-torque edingekayo ukuze kuthuthukiswe ushintsho lwalolu hlobo lomthwalo ingekho phezulu, idinga amandla amaningi ukuze iguqule isimo samanje ngokushesha. Kufana namanzi abilayo. Umlilo omncane ungaphinda ubilise, futhi kufanele Ubilise maduze, futhi umlilo ongase udingeke uzoba mkhulu kakhulu.
Lezi izincazelo ezithile zochungechunge lwezimoto. Ukuze uthole imvamisa enikeziwe kanye nokuqala kwamanje, abukho ubudlelwano obungenakugwemeka phakathi kwabo. Ukuqala kwamanje kuncike ekumisweni kokuqala kwejika le-VF kanye nobude besikhathi sokusheshisa. Ngomthwalo owuketshezi, ukusebenzisa ijika lamandla amaningi kungenza okokusebenza kusebenze ukonga amandla kakhudlwana futhi kuthole izinzuzo zezomnotho ezengeziwe.
Isikhathi sokuthumela: Nov-08-2021
