Chingwe cha DC chili ndi makhalidwe otsatirawa poyerekeza ndi chingwe cha AC.
1. Dongosolo lomwe limagwiritsidwa ntchito ndi losiyana. Chingwe cha DC chimagwiritsidwa ntchito mu dongosolo lokonzanso la DC, ndipo chingwe cha AC nthawi zambiri chimagwiritsidwa ntchito mu dongosolo lamagetsi la ma frequency (lapakhomo la 50 Hz).
2. Poyerekeza ndi chingwe cha AC, kutayika kwa mphamvu panthawi yotumiza chingwe cha DC ndi kochepa.
Kutayika kwa mphamvu kwa chingwe cha DC makamaka kumachokera ku kukana kwa DC kwa kondakitala, ndipo kutayika kwa insulation kumakhala kochepa (kukula kumadalira kusinthasintha kwa mphamvu pambuyo pokonzanso).
Ngakhale kukana kwa AC kwa chingwe cha AC chotsika mphamvu kuli kwakukulu pang'ono kuposa kukana kwa DC, chingwe chamagetsi okwera mphamvu chimawonekeratu, makamaka chifukwa cha kuyandikira kwa mphamvu ndi zotsatira za khungu, kutayika kwa kukana kwa insulation kumayimira gawo lalikulu, makamaka impedance yopangidwa ndi capacitor ndi inductor.
3. Kugwiritsa ntchito bwino kwambiri kwa ma transmissions komanso kutayika kwa mizere yochepa.
4. N'kosavuta kusintha mphamvu yamagetsi ndikusintha njira yotumizira mphamvu.
5. Ngakhale mtengo wa zida zosinthira uli wapamwamba kuposa wa transformer, mtengo wogwiritsa ntchito chingwe cha chingwe ndi wotsika kwambiri kuposa wa chingwe cha AC.
Chingwe cha DC chili ndi ma poles abwino ndi oipa, ndipo kapangidwe kake ndi kosavuta; chingwe cha AC ndi makina a mawaya anayi a magawo atatu, kapena mawaya asanu, zofunikira pa chitetezo cha insulation ndizokwera, kapangidwe kake ndi kovuta, ndipo mtengo wa chingwe ndi woposa katatu kuposa chingwe cha DC.
6. Chingwe cha DC ndi chotetezeka kugwiritsa ntchito:
1) Makhalidwe enieni a DC transmission, ndizovuta kupanga induced current ndi leak current, ndipo sizingasokoneze mphamvu yamagetsi yopangidwa ndi zingwe zina.
2) Chingwe choyikira cha single-core sichikhudza momwe chingwe chimagwirira ntchito chifukwa cha kutayika kwa hysteresis kwa mlatho wa kapangidwe ka chitsulo.
3) Ili ndi mphamvu yokwanira yolumikizira ndi kuteteza kwambiri kuposa zingwe za DC zomwe zili ndi kapangidwe komweko.
4) Mphamvu yamagetsi yolunjika, yosinthasintha yamagetsi omwewo imagwiritsidwa ntchito pa chotenthetsera, ndipo mphamvu yamagetsi ya DC ndi yotetezeka kwambiri kuposa mphamvu yamagetsi ya AC.
7. Kukhazikitsa ndi kusamalira chingwe cha DC ndikosavuta ndipo mtengo wake ndi wotsika.
Nthawi yotumizira: Novembala-11-2024