Yaya girman lokacin farawa na motar?

Akwai ra'ayoyi daban-daban game da sau nawa farkon na yanzu na motar shine ƙimar halin yanzu, kuma yawancin su sun dogara ne akan takamaiman yanayi.Kamar sau goma, sau 6 zuwa 8, sau 5 zuwa 8, sau 5 zuwa 7 da sauransu.

Ɗaya shine a ce lokacin da saurin motar ya kasance sifili a lokacin farawa (wato, lokacin farko na farawa), ƙimar halin yanzu a wannan lokacin ya kamata ya zama darajarsa ta kulle-rotor.Don mafi yawan amfani da jerin Y jerin motocin asynchronous mai hawa uku, akwai ƙayyadaddun ƙa'idodi a cikin ma'aunin JB/T10391-2002 “Y series three-phase asynchronous Motors”.Daga cikin su, ƙayyadaddun ƙimar rabo na kulle-rotor halin yanzu zuwa ƙimar halin yanzu na motar 5.5kW shine kamar haka: a saurin daidaitawa na 3000, rabon kulle-rotor na yanzu zuwa ƙimar halin yanzu shine 7.0;a saurin daidaitawa na 1500, rabon makullin-rotor halin yanzu zuwa ƙimar halin yanzu shine 7.0;Lokacin da saurin daidaitawa ya kasance 1000, rabon makullin-rotor halin yanzu zuwa ƙimar halin yanzu shine 6.5;lokacin da saurin aiki tare ya kasance 750, rabon kulle-kulle-na'ura mai juyi zuwa ƙimar halin yanzu shine 6.0.Ƙarfin motar 5.5kW yana da girma, kuma motar tare da ƙaramin iko shine rabo na farawa na yanzu zuwa halin yanzu.Ya kamata ya zama ƙarami, don haka litattafan litattafan lantarki da wurare da yawa sun ce farkon halin yanzu na motar asynchronous shine sau 4 ~ 7 wanda aka kimanta aikin halin yanzu..

Me yasa motar ke farawa a halin yanzu?Bayan fara halin yanzu kadan ne?

Anan muna buƙatar fahimtar mahangar ƙa'idar farawa ta injin da ka'idar juyawar motsi: lokacin da injin shigar da ke cikin yanayin tsayawa, daga ma'aunin lantarki, yana kama da na'urar wuta, da iskar stator da aka haɗa da wutar lantarki. wadata yana daidai da naɗaɗɗen farko na na'urar wuta, Rufewar rotor winding yana daidai da gajeriyar na'ura ta biyu ta na'urar wuta;haɗin da ba na wutar lantarki tsakanin iskar stator da na'ura mai juyi ba shine kawai haɗin maganadisu, kuma motsin maganadisu yana haifar da rufaffiyar da'ira ta hanyar stator, iska mai iska, da rotor core.A lokacin rufewa, rotor bai riga ya juya ba saboda rashin aiki, kuma filin maganadisu mai jujjuya yana yanke iska mai jujjuyawa a matsakaicin saurin yankewa.-Gudun aiki tare, ta yadda injin rotor ya haifar da mafi girman yuwuwar yuwuwar wutar lantarki.Saboda haka, babban adadin wutar lantarki yana gudana a cikin mai sarrafa rotor.Wutar lantarki, wannan halin yanzu yana samar da makamashin maganadisu wanda ke soke filin maganadisu na stator, kamar dai yadda maɗaukakiyar maganadisu ta biyu ta na'urar taswira ke soke firamare na farko.Domin kiyaye ainihin juzu'in maganadisu mai dacewa da ƙarfin wutar lantarki a wancan lokacin, stator yana ƙaruwa ta atomatik.Domin rotor halin yanzu yana da girma a wannan lokacin, ƙarfin halin yanzu yana ƙaruwa sosai, har zuwa 4 zuwa sau 7 na halin yanzu.Wannan shi ne dalilin da babban lokacin farawa.Me ya sa na yanzu ya yi ƙanƙanta bayan farawa: Yayin da motsin motar ke ƙaruwa, saurin da filin magnetic ya yanke na'urar rotor ya ragu, ƙarfin lantarki da aka haifar a cikin na'ura mai juyayi yana raguwa, kuma na yanzu a cikin na'ura mai juyayi shima yana raguwa, don haka Ana amfani da stator current don kashe na'urar rotor da aka samar Hakanan ana rage ɓangaren na yanzu da motsin maganadisu ya shafa, don haka stator na yanzu yana canzawa daga babba zuwa ƙarami har zuwa al'ada.

Da Jessica