Kodi njira zochepetsera kuyambika kwa injini ndi ziti?

1. Direct kuyambira

Direct kuyambira ndi ndondomeko mwachindunji kulumikiza ndistatorkuzungulira kwa agalimoto yamagetsiku magetsi ndikuyamba pa voliti yovotera. Ili ndi mawonekedwe a torque yayikulu komanso nthawi yayitali yoyambira, komanso ndiyosavuta, yotsika mtengo komanso yodalirika yoyambira. Mukayamba pamagetsi athunthu, magetsi amakhala okwera ndipo torque yoyambira si yayikulu, zomwe zimapangitsa kuti ikhale yosavuta kugwiritsa ntchito komanso kuyambitsa mwachangu. Komabe, njira yoyambirayi ili ndi zofunika kwambiri pakukula kwa gridi ndi katundu, ndipo ndiyoyenera kuyambitsa ma mota pansi pa 1W.

2.Motor series resistance ikuyamba

Kuyamba kwa magalimoto kumayamba ndi njira yochepetsera voteji kuyambira. Panthawi yoyambira, chopinga chimalumikizidwa motsatizana mumayendedwe a stator. Pamene mphamvu yoyambira ikudutsa, kutsika kwa magetsi kumapangidwira pa resistor, kuchepetsa mphamvu yomwe imagwiritsidwa ntchito pastatorchokhotakhota. Izi zitha kukwaniritsa cholinga chochepetsera kuyambika kwapano.

3.Kuyamba kwa self coupling transformer

Kugwiritsa ntchito kutsitsa kwamagetsi amtundu wamtundu wa autotransformer sikungangokwaniritsa zosowa zamitundu yosiyanasiyana yoyambira, komanso kupeza torque yayikulu yoyambira. Ndi njira yoyambira yochepetsera magetsi yomwe imagwiritsidwa ntchito poyambira ma motors akulu. Ubwino wake waukulu ndikuti torque yoyambira ndi yayikulu. Mpopi wokhotakhota uli pa 80%, torque yoyambira imatha kufika 64% ya torque yoyambira, ndipo torque yoyambira imatha kusinthidwa pampopi. Akaunti yovomerezeka "Mechanical Engineering Literature", malo opangira mafuta a injiniya!

4.Star Delta Decompression Yambani

Kwa agologolo khola asynchronous galimoto ndi ntchito bwinobwinostatormapiringidzo olumikizidwa mu njira ya katatu, ngati stator yokhotakhota ikugwirizana ndi mawonekedwe a nyenyezi panthawi yoyambira ndiyeno yolumikizidwa ndi mawonekedwe a makona atatu pambuyo poyambira, imatha kuchepetsa poyambira ndikuchepetsa mphamvu zake pa gridi yamagetsi. Njira yoyambirayi imatchedwa star delta decompression kuyambira, kapena kungoyambira nyenyezi kuyambira (y&start).

Mukamagwiritsa ntchito njira yoyambira ya delta ya nyenyezi, njira yoyambira ndi gawo limodzi mwa magawo atatu a njira yoyambira mwachindunji pogwiritsa ntchito njira yolumikizira makona atatu. Pa delta ya nyenyezi kuyambira, poyambira pano ndi nthawi 2-2.3 zokha. Izi zikutanthauza kuti mukamagwiritsa ntchito delta ya nyenyezi kuyambira, torque yoyambira imachepetsedwa kukhala gawo limodzi mwamagawo atatu a zomwe zidali poyambira mwachindunji kugwiritsa ntchito njira yolumikizira makona atatu.

Zoyenera nthawi zomwe mulibe katundu kapena katundu wopepuka poyambira. Ndipo poyerekeza ndi choyambira china chilichonse cha vacuum, kapangidwe kake ndi kosavuta komanso mtengo wake ndi wotsika mtengo kwambiri.

Kuonjezera apo, njira yoyambira ya delta ya nyenyezi imakhalanso ndi ubwino, womwe ndi woti pamene katunduyo ali wopepuka, amatha kulola galimoto kuti igwire ntchito pansi pa njira yolumikizira nyenyezi. Pakadali pano, torque ndi katundu wovoteledwa zitha kufananizidwa, zomwe zitha kupititsa patsogolo mphamvu yagalimoto ndikupulumutsa magetsi.

5.Frequency converter chiyambi (chiyambi chofewa)

 Makina osinthira pafupipafupi ndiye chida chaukadaulo kwambiri, chogwira ntchito mokwanira, komanso chothandiza kwambiri pakuwongolera magalimoto amakono. Imasinthasintha liwiro ndi torque ya mota posintha ma frequency a gridi yamagetsi. Chifukwa chotenga nawo gawo paukadaulo wamagetsi amagetsi ndi ukadaulo wapa microcomputer, mtengo wake ndi wokwera komanso zofunikira za akatswiri okonza zinthu ndizokwera. Chifukwa chake, amagwiritsidwa ntchito makamaka m'magawo omwe amafunikira kuwongolera liwiro komanso zofunikira zowongolera liwiro.