Mayiko ena padziko lapansi, monga United Kingdom ndi United States, amagwiritsa ntchito 60Hz alternating current, chifukwa amagwiritsa ntchito decimal, magulu a nyenyezi 12, maola 12, shilling 12 ndi ofanana 1 pound ndi zina zotero.Pambuyo pake mayiko adatengera kachitidwe ka decimal, kotero ma frequency ndi 50Hz.
Bwanji ngati ma frequency ndi otsika?
Cute Dickson nayenso adataya Tesla pamapeto pake, ndipo AC idamenya DC ndi mwayi wosintha mosavuta mulingo wamagetsi.Pankhani ya mphamvu yotumizira yomweyi, kuwonjezereka kwa magetsi kudzachepetsa kufalikira kwamakono, ndipo mphamvu zomwe zimagwiritsidwa ntchito pamzere zidzachepanso.Vuto lina la kufalitsa kwa DC ndilovuta kuthyoka, ndipo vutoli likadali vuto mpaka pano.Vuto la kufalitsa kwa DC ndilofanana ndi spark yomwe imapezeka pamene pulagi yamagetsi imatulutsidwa nthawi wamba.Madzi akafika pamlingo winawake, motowo sungathe kuzimitsidwa.Timachitcha "arc".
Pakusinthasintha kwapano, pompopompo isintha kolowera, kotero pali nthawi yomwe pano imadutsa ziro.Pogwiritsa ntchito nthawi yaying'onoyi, titha kudula mzere womwe ulipo kudzera pa chipangizo chozimitsa cha arc.Koma mayendedwe a DC pano sasintha.Popanda malo odutsa ziro, zingakhale zovuta kuti tizimitse arc.
Transformer imadalira kusintha kwa maginito kumbali yoyamba kuti imve kukwera kapena kutsika kwa mbali yachiwiri.Kuchedwetsa kwafupipafupi kwa maginito kumasintha, kufooka kwa induction.Chovuta kwambiri ndi DC, ndipo palibe kulowetsedwa konse, kotero kuti ma frequency ndi otsika kwambiri.
Mwachitsanzo, liwiro la injini yagalimoto ndi ma frequency ake, monga 500 rpm pamene idling, 3000 rpm pothamanga ndi kusuntha, ndi ma frequency otembenuka ndi 8.3Hz ndi 50Hz motsatana.Izi zikuwonetsa kuti liwiro lapamwamba kwambiri, mphamvu ya injini imakulirakulira.
Momwemonso, pamafupipafupi, injini ikuluikulu, mphamvu yotulutsa mphamvu kwambiri, chifukwa chake injini za dizilo zimakhala zazikulu kuposa mafuta, ndipo injini zazikulu ndi zamphamvu za dizilo zimatha kuyendetsa magalimoto olemera monga mabasi.
Momwemonso, injini (kapena makina onse ozungulira) imafunikira kukula kochepa komanso mphamvu yayikulu yotulutsa.Pali njira imodzi yokha - kuonjezera liwiro, chifukwa chake mafupipafupi amakono osinthika sangakhale otsika kwambiri, chifukwa timafunikira kukula kochepa koma mphamvu yayikulu.galimoto yamagetsi.
N'chimodzimodzinso ndi ma inverter air conditioners, omwe amawongolera mphamvu yotulutsa mpweya wa air conditioner compressor posintha ma frequency a alternating current.Mwachidule, mphamvu ndi mafupipafupi zimayenderana bwino mumtundu wina.
Bwanji ngati ma frequency ndi apamwamba?Mwachitsanzo, bwanji 400Hz?
Tiye tikambirane kaye za kutaya.Njira zotumizira, zida zapansi panthaka, ndi zida zamagetsi zonse zimakhudzidwa.Zomwe zimachitika zimayenderana ndi ma frequency.Zochepa.
Pakalipano, kachitidwe ka mzere wotumizira wa 50Hz ndi pafupifupi 0.4 ohms, yomwe ili pafupifupi 10 kukana.Ngati chiwonjezeke mpaka 400Hz, momwe zimakhalira zimakhala 3.2 ohms, zomwe zimakhala pafupifupi 80 kukana.Kwa mizere yotumizira ma voltage apamwamba, kuchepetsa momwe zimachitikira ndiye chinsinsi chowongolera mphamvu yotumizira.
Mogwirizana ndi reactance, palinso capacitive reactance, yomwe imayenderana ndi ma frequency.Kukwera kwafupipafupi, kucheperachepera kwa capacitive reactance komanso kuchulukira kwamphamvu kwa mzerewo.Ngati mafupipafupi ali okwera, kutayikira kwa mzerewo kudzawonjezekanso.
Vuto lina ndi liwiro la jenereta.Jenereta yamakonoyi imakhala ndi makina amodzi, ndiko kuti, mitengo ya maginito.Kuti apange magetsi a 50Hz, rotor imazungulira pa 3000 rpm.Liwiro la injini likafika 3,000 rpm, mutha kumva bwino kuti injini ikugwedezeka.Ikafika pa 6,000 kapena 7,000 rpm, mumamva kuti injiniyo yatsala pang'ono kudumpha kuchoka pa hood.
Chifukwa maonekedwe amasintha mofulumira, ma rotor olemera matani ambiri amachedwa kuchepetsa kapena kuonjezera zotsatira chifukwa cha inertia yaikulu (lingaliro la mlingo wa ramp), zomwe sizingagwirizane ndi kusintha kwa mphamvu ya mphepo ndi mphamvu ya photovoltaic. nthawi zina iyenera kusiyidwa.Mphepo ndi kuwala kosiyidwa.
Zitha kuwoneka kuchokera ku izi
Chifukwa chomwe mafupipafupi sangakhale otsika kwambiri: thiransifoma ikhoza kukhala yothandiza kwambiri, ndipo galimotoyo ikhoza kukhala yaying'ono kukula ndi mphamvu yaikulu.
Chifukwa chomwe mafupipafupi sayenera kukhala okwera kwambiri: kutayika kwa mizere ndi zipangizo kungakhale kochepa, ndipo liwiro la jenereta siliyenera kukhala lokwera kwambiri.
Chifukwa chake, malinga ndi zomwe takumana nazo komanso chizolowezi, mphamvu zathu zamagetsi zimayikidwa pa 50 kapena 60 Hz.
Nthawi yotumiza: Jul-06-2022