Me yasa motar zata zaɓi 50HZ AC?|

Jijjifin motoci yana ɗaya daga cikin yanayin aiki na injina.Don haka, kun san dalilin da yasa kayan lantarki irin su injina ke amfani da 50Hz alternating current maimakon 60Hz?

Wasu kasashe a duniya, irin su Ingila da Amurka, suna amfani da 60Hz alternating current, saboda suna amfani da tsarin decimal, menene taurari 12, awanni 12, shillings 12, daidai yake da fam 1 da sauransu.Ƙasashe daga baya sun karɓi tsarin decimal, don haka mitar ita ce 50Hz.

Don haka me yasa muke zaɓar 50Hz AC maimakon 5Hz ko 400Hz?

Idan mitar ya yi ƙasa fa?

Mafi ƙarancin mitar shine 0, wanda shine DC.Domin tabbatar da cewa Tesla's alternating current yana da haɗari, Edison ya yi amfani da alternating current don jefa ƙuri'ar ƙananan dabbobi.Idan ana la'akari da giwaye kanana dabbobi… A zahirin gaskiya, ƙarƙashin girman halin yanzu, jikin ɗan adam zai iya jure wa kai tsaye na tsawon lokaci fiye da lokacin da za a jure alternating current yana da alaƙa da fibrillation na ventricular, wato alternating current ya fi haɗari.

Cute Dickson shima ya sha kashi a hannun Tesla a karshen, kuma AC ta doke DC tare da fa'idar sauya matakin wutar lantarki cikin sauki.A cikin yanayin wutar lantarki iri ɗaya, ƙara ƙarfin wutar lantarki zai rage ƙarfin watsawa, kuma makamashin da ake cinyewa akan layi shima zai ragu.Wata matsalar da ke tattare da watsa wutar lantarki ta DC ita ce da wuya a karye, kuma wannan matsalar har yanzu tana da matsala.Matsalar watsa DC iri ɗaya ce da tartsatsin da ke faruwa lokacin da aka ciro filogin lantarki a lokuta na yau da kullun.Lokacin da halin yanzu ya kai wani matsayi, ba za a iya kashe tartsatsin wuta ba.Mun kira shi "arc".

Domin alternating current, na yanzu zai canza alkibla, don haka akwai lokacin da na yanzu ya ketare sifili.Yin amfani da wannan ƙaramin lokaci na yanzu, zamu iya yanke layin yanzu ta na'urar kashe baka.Amma alkiblar halin yanzu na DC ba zai canza ba.Idan ba tare da wannan madaidaicin sifili ba, zai yi wahala a gare mu mu kashe baka.

Menene ke damun ƙananan mitar AC?

Na farko, matsalar wutar lantarki

Transformer ya dogara ne da canjin filin maganadisu a gefen farko don jin matakin sama ko ƙasa na ɓangaren sakandare.Da sannu a hankali mitar filin maganadisu ke canzawa, ƙarancin shigar da ƙara.Matsananciyar yanayin ita ce DC, kuma babu shigarwa kwata-kwata, don haka mitar ta yi ƙasa sosai.

Na biyu, matsalar wutar lantarki na kayan aikin lantarki

Misali, saurin injin mota shine mitar sa, kamar 500 rpm lokacin da ba a aiki ba, 3000 rpm lokacin hanzari da motsi, kuma mitocin da aka canza sune 8.3Hz da 50Hz bi da bi.Wannan yana nuna cewa mafi girman gudu, mafi girman ƙarfin injin.

Hakazalika, a irin mitar da injin ya yi girma, zai kara karfin fitarwa, shi ya sa injinan dizal ya fi mai, kuma manyan injinan diesel masu karfi na iya tuka manyan motoci irin su motocin bas.

Hakazalika, injin (ko duk injinan jujjuyawa) yana buƙatar duka ƙananan girman da babban ƙarfin fitarwa.Akwai hanya ɗaya kawai - don ƙara saurin gudu, wanda shine dalilin da ya sa mitar mai canzawa ba zai iya zama ƙasa da ƙasa ba, saboda muna buƙatar ƙaramin girman amma babban iko.injin lantarki.

Haka abin yake ga na'urorin kwantar da iska mai inverter, waɗanda ke sarrafa ikon fitarwa na injin kwandishan ta hanyar canza mitar canjin halin yanzu.A taƙaice, ƙarfi da mitar suna da alaƙa da inganci a cikin takamaiman kewayon.

Idan mitar ya yi yawa fa?Misali, yaya game da 400Hz?

Akwai matsaloli guda biyu, daya shine asarar layuka da kayan aiki yana karuwa, ɗayan kuma shine injin janareta yana juyawa da sauri.

Bari mu fara magana game da asara.Layukan watsawa, kayan aikin tashar, da kayan lantarki duk suna da amsa.Amsar ta yi daidai da mita.Kadan.

A halin yanzu, amsawar layin watsa 50Hz yana kusan 0.4 ohms, wanda shine kusan sau 10 juriya.Idan an ƙara zuwa 400Hz, reactance zai zama 3.2 ohms, wanda shine kusan sau 80 juriya.Don manyan layukan watsa wutar lantarki, rage amsawa shine mabuɗin haɓaka ƙarfin watsawa.

Daidai da reactance, akwai kuma capacitive reactance, wanda shi ne inversely gwargwado ga mita.Mafi girman mitar, ƙarami mai ƙarfin ƙarfin amsawa kuma mafi girman yayyowar layin.Idan mitar ta yi girma, ɗigogin layin kuma zai ƙaru.

Wata matsalar kuma ita ce saurin janareto.Saitin janareta na yanzu ainihin na'ura ce mai hawa ɗaya, wato, sandunan maganadisu biyu.Domin samar da wutar lantarki 50Hz, rotor yana juyawa a 3000 rpm.Lokacin da saurin injin ya kai rpm 3,000, zaku iya jin motsin injin yana girgiza.Lokacin da ya juya zuwa 6,000 ko 7,000 rpm, za ku ji cewa injin yana gab da tsalle daga kaho.

Injin mota yana nan kamar haka, in ba a ma maganar rotor na ƙarfe mai ƙarfi da injin tururi mai nauyin ton 100, wanda kuma shi ne dalilin ƙarar wutar lantarki.Rotor karfe mai nauyin ton 100 a juyi 3,000 a minti daya yana da sauƙin faɗi fiye da yi.Idan mitar ta ninka sau uku ko hudu, ana kiyasin cewa janareta zai iya tashi daga wurin taron.

Irin wannan rotor mai nauyi yana da babban rashin ƙarfi, wanda kuma shine ma'anar cewa ana kiran tsarin wutar lantarki tsarin inertial kuma yana iya kiyaye aiki mai aminci da kwanciyar hankali.Shi ya sa mabubbugar wutar lantarki masu tsaka-tsaki kamar iska da hasken rana ke ƙalubalantar hanyoyin wutar lantarki na gargajiya.

Saboda yanayin yanayin yana canzawa da sauri, masu rotors masu yin la'akari da yawa na ton suna jinkirin ragewa ko ƙara yawan fitarwa saboda babban inertia (ma'anar ramp rate), wanda ba zai iya ci gaba da sauye-sauyen wutar lantarki da wutar lantarki na photovoltaic ba, don haka wani lokacin sai a yi watsi da shi.Iska da hasken da aka watsar.

Ana iya gani daga wannan

Dalilin da yasa mita ba zai iya zama ƙasa da ƙasa ba: na'urar lantarki na iya zama mai inganci sosai, kuma motar na iya zama ƙarami a girman kuma girma cikin iko.

Dalilin da yasa mita bai kamata ya kasance mai girma ba: asarar layi da kayan aiki na iya zama ƙananan, kuma gudun janareta baya buƙatar yin girma da yawa.

Saboda haka, bisa ga kwarewa da al'ada, an saita ƙarfin lantarki a 50 ko 60 Hz.

Lokacin aikawa: Jul-06-2022