Sake mayar da martani daga mai siyar da naúrar yana tunatar da ku cewa akwai manyan hanyoyin birki na lantarki guda uku don injinan shigar da abubuwa uku: birki mai amfani da makamashi, birki na baya na haɗin gwiwa, da birki mai sabuntawa. Motar shigar da ake magana a kai a nan tana nufin injinan asynchronous mai hawa uku da masu rauni.
1. Kashe wutar lantarki AC mai hawa uku na motar yayin amfani da birki na makamashi kuma aika wutar DC zuwa iskar stator. A daidai lokacin da aka yanke wutar lantarki ta AC, saboda rashin aiki, motar har yanzu tana jujjuya zuwa asalinta, tana haifar da ƙarfin lantarki da kuma jawo halin yanzu a cikin na'urar rotor. Halin da aka jawo yana haifar da juzu'i, wanda ke gaba da juzu'i zuwa madaidaicin filin maganadisu da aka kafa bayan an ba da halin yanzu kai tsaye. Saboda haka, motar da sauri ta daina juyawa don cimma manufar yin birki. Siffar wannan hanyar ita ce birki mai santsi, amma tana buƙatar wutar lantarki ta DC da injin mai ƙarfi. Kudin kayan aikin DC da ake buƙata yana da yawa, kuma ƙarfin birki yana da ƙanƙanta a ƙananan gudu.
2. Reverse birki ya kasu kashi biyu: Load reverse birking da power reverse birking.
1) Load reverse birking, wanda kuma aka sani da load reverse ja da baya birki. Lokacin da rotor na injin lantarki ke jujjuya gaba da gaba zuwa filin maganadisu mai jujjuya karkashin aikin wani abu mai nauyi (lokacin da crane yayi amfani da injin lantarki don rage wani abu mai nauyi), karfin wutar lantarki da ake samu a wannan lokacin shine karfin birki. Wannan juzu'in yana sa abu mai nauyi ya saukowa a hankali a tsayayyen gudu. Halayen irin wannan nau'in birki shine cewa wutar lantarki baya buƙatar juyawa, ba a buƙatar kayan aikin birki na musamman, kuma ana iya daidaita saurin birki. Duk da haka, ya dace ne kawai don injin rauni, kuma ana buƙatar haɗin kebul na rotor a cikin jerin tare da babban resistor don yin ƙimar zamewa fiye da 1.
2) Lokacin da motar lantarki ke buƙatar birki, kawai musanya layin wutar lantarki mai kashi biyu don yin jujjuyawar filayen maganadisu, kuma yana iya yin birki da sauri. Lokacin da saurin motar ya kai sifili, nan da nan yanke wutar lantarki. Siffofin irin wannan nau'in birkin sune: wurin ajiye motoci da sauri, ƙarfin birki mai ƙarfi, kuma babu buƙatar kayan aikin birki. Koyaya, yayin birki, saboda babban halin yanzu da ƙarfin tasiri, yana da sauƙi ga motar ta yi zafi ko lalata sassan sashin watsawa.
3. Regenerative birki, wanda kuma aka sani da feedback birki, yana nufin al'amarin inda, a karkashin aikin wani nauyi abu (lokacin da crane motor runtse abu), da mota ta gudun wuce synchronous gudun da synchronous na Magnetic filin juyawa. A wannan lokacin, jagoran rotor yana haifar da halin yanzu, wanda ke haifar da karfin juzu'i na jujjuyawa a ƙarƙashin aikin filin maganadisu mai juyawa. Motar ta shiga cikin yanayin samar da wutar lantarki kuma ta dawo da wutar lantarki. Wannan hanyar za ta iya shigar da yanayin birki a zahiri kuma tana aiki da dogaro, amma saurin motar yana da girma kuma yana buƙatar na'urar saurin canzawa don rage gudu.
Duk da cewa babu na'urori da yawa da ke amfani da birki, amma mafi yawan motoci masu hawa uku kamar fanfunan ruwa, fanfo, da na'urorin watsawa ba dole ba ne kuma ana iya dakatar da su kyauta, har yanzu akwai takamaiman na'urorin masana'anta da ke buƙatar birki. Hanyoyin birki guda uku da ke sama kowanne yana da nasa fa'ida da rashin amfani, sannan kuma suna da nasu aikace-aikace. Musamman wanda za a yi amfani da shi ya dogara da takamaiman kayan aiki.