Hluav Taws Xob Hloov Pauv: Cov Ntsiab Cai, Kev Siv, thiab Cov Txiaj Ntsig hauv Lub Neej Txhua Hnub
Pendahuluuan
Lub zog hluav taws xob hloov pauv (AC) yog lub tswv yim tseem ceeb hauv hluav taws xob thiab khoom siv hluav taws xob. Tsis zoo li lub zog hluav taws xob ncaj qha (DC), uas ntws tas li hauv ib qho kev taw qhia, lub zog hluav taws xob hloov pauv tas li. Cov yam ntxwv no ua rau AC tseem ceeb hauv ntau yam kev siv, tshwj xeeb tshaj yog hauv kev xa hluav taws xob thoob ntiaj teb. Tsab xov xwm no yuav tshawb nrhiav cov ntsiab cai yooj yim ntawm lub zog hluav taws xob hloov pauv, nws cov kev siv hauv lub neej txhua hnub, thiab nws cov txiaj ntsig dua li lub zog hluav taws xob ncaj qha.
Cov Ntsiab Cai Tseem Ceeb ntawm Kev Hloov Hluav Taws Xob
Thawj zaug Nikola Tesla tsim lub zog hluav taws xob hloov pauv tau tsim nyob rau xyoo pua 19th. AC ua haujlwm raws li lub hauv paus ntsiab lus tias lub zog hluav taws xob tuaj yeem hloov pauv kev coj ua los ntawm kev ua raws li lub luag haujlwm sinusoidal, uas tuaj yeem piav qhia los ntawm kev suav lej yooj yim. Lub luag haujlwm no tso cai rau lub zog hluav taws xob kom oscillate ntawm cov nqi zoo thiab tsis zoo hauv tus qauv ib txwm muaj.
Lub voj voog thiab zaus
Ib lub voj voog puv ntawm cov hluav taws xob hloov pauv suav nrog cov hluav taws xob hloov ntawm xoom mus rau qhov siab tshaj plaws, rov qab mus rau xoom, mus rau qhov siab tshaj plaws tsis zoo, thiab rov qab mus rau xoom dua. Lub zaus ntawm cov hluav taws xob hloov pauv yog ntsuas hauv Hertz (Hz), uas qhia txog tus naj npawb ntawm cov voj voog ib ob. Piv txwv li, hauv ntau lub tebchaws, tus qauv zaus rau hluav taws xob lag luam yog 50 Hz, thaum nyob hauv Tebchaws Meskas nws yog 60 Hz.
Kev Nyuaj Siab Zoo
Hauv cov ntsiab lus ntawm alternating current, qhov voltage feem ntau hu ua effective voltage (rms - root mean square), uas yog tus nqi AC sib npaug uas tsim tau tib lub zog li tus nqi DC. Tus nqi no tseem ceeb vim nws qhia tau tias tam sim no muaj zog npaum li cas.
Cov Ntawv Thov Tam Sim No Hloov Pauv
Kev siv hluav taws xob hloov pauv muaj ntau yam kev siv tseem ceeb uas ua rau nws zoo dua los siv hluav taws xob ncaj qha hauv qee qhov xwm txheej.
Kev Faib Hluav Taws Xob
Ib qho ntawm cov txiaj ntsig zoo tshaj plaws ntawm alternating current yog nws txoj kev ua haujlwm zoo hauv kev faib hluav taws xob mus deb. Los ntawm kev siv cov transformers, AC voltage tuaj yeem nce siab rau kev xa mus deb thiab tom qab ntawd txo qis rau kev siv hauv zos. Qhov no txo cov kev poob zog thaum lub sijhawm xa mus, ua rau AC ua haujlwm tau zoo dua thiab pheej yig dua.
Lub cev muaj zog hluav taws xob
Cov cav hluav taws xob siv rau hauv ntau lub tsev neeg thiab cov khoom siv hauv kev lag luam feem ntau siv hluav taws xob hloov pauv. Cov cav AC yooj yim dua los tswj thiab ua haujlwm tau zoo dua rau ntau yam kev siv, los ntawm cov kiv cua mus rau cov tshuab hnyav hauv kev lag luam.
Cov Khoom Siv Hluav Taws Xob thiab Cov Khoom Siv Hauv Tsev
Feem ntau ntawm cov khoom siv hluav taws xob thiab cov khoom siv hauv tsev uas peb siv txhua hnub, xws li TV, khoos phis tawj, thiab tub yees, yog tsim los ua haujlwm ntawm hluav taws xob hloov pauv. Cov transformers sab hauv thiab cov regulators hloov AC mus rau DC raws li qhov xav tau.
Cov txiaj ntsig ntawm Alternating Current
Kev hloov pauv tam sim no muaj ntau qhov zoo tseem ceeb uas ua rau nws muaj txiaj ntsig zoo rau ntau yam kev siv.
Kev Ua Haujlwm Zoo Tshaj Plaws hauv Kev Kis
Raws li tau hais ua ntej lawm, ib qho ntawm cov txiaj ntsig tseem ceeb ntawm kev hloov pauv hluav taws xob yog nws txoj kev ua haujlwm zoo hauv kev xa hluav taws xob mus deb. Los ntawm cov transformers, lub zog hluav taws xob tuaj yeem xa mus rau qhov hluav taws xob siab thiab qhov hluav taws xob qis, txo qhov poob hluav taws xob hauv cov txheej txheem.
Yooj Yim Siv thiab Tswj
Kev siv cov transformers ua rau yooj yim kho qhov voltage ntawm alternating current. Qhov no muab kev ywj pheej rau ntau yam kev siv, txij li kev siv hauv tsev mus rau kev lag luam hnyav.
Kev Ruaj Ntseg Zoo Dua
Txawm hais tias qhov hluav taws xob siab tuaj yeem ua rau muaj kev phom sij, tab sis feem ntau qhov hluav taws xob alternating tam sim no raug suav hais tias muaj kev nyab xeeb dua hauv qee qhov xwm txheej vim tias nws txoj haujlwm tso cai rau kev siv cov fuses thiab circuit breakers zoo. Cov khoom siv no tuaj yeem cuam tshuam cov hluav taws xob sai sai yog tias muaj luv luv lossis overload, txo qhov kev pheej hmoo ntawm hluav taws lossis khoom siv puas tsuaj.
Kev Sib Piv Nrog Direct Current
Txawm hais tias hluav taws xob hloov pauv muaj ntau yam zoo, hluav taws xob ncaj qha kuj muaj lub luag haujlwm tseem ceeb thiab kev siv. Ib qho ntawm cov txiaj ntsig tseem ceeb ntawm hluav taws xob ncaj qha yog nws lub peev xwm khaws cia lub zog, xws li hauv cov roj teeb thiab cov roj teeb hnub ci.
Cov txiaj ntsig ntawm Direct Current
Cov hluav taws xob ncaj qha ruaj khov dua thiab yooj yim dua rau siv rau hauv cov ntawv thov uas xav tau qhov hluav taws xob tas li. Qhov no ua rau nws zoo tagnrho rau cov khoom siv hluav taws xob rhiab heev uas xav tau lub zog ruaj khov, xws li cov khoos phis tawj thiab cov teeb pom kev zoo LED.
Kev Txwv hauv Kev Sib Kis
Txawm li cas los xij, tam sim no ncaj qha tsis zoo hauv kev xa mus deb vim yog qhov poob hluav taws xob ntau dua. Ua ntej kev tshwm sim ntawm cov thev naus laus zis hloov pauv zoo, DC tsis yooj yim rau kev faib hluav taws xob hauv cov tes hauj lwm faib hluav taws xob loj.
Kev Siv Tshuab Hloov Kho Tam Sim No
Nrog kev nce qib hauv thev naus laus zis, kev hloov pauv ntawm AC thiab DC tau yooj yim dua thiab ua haujlwm tau zoo dua. Cov inverters thiab rectifiers yog cov khoom siv uas hloov cov hluav taws xob hloov pauv mus rau hluav taws xob ncaj qha (DC). Cov thev naus laus zis no tso cai rau kev sib koom ua ke zoo dua ntawm cov kab ke siv AC thiab cov uas xav tau DC.
Inverter
Lub inverter hloov cov hluav taws xob ncaj qha los ntawm lub hauv paus xws li lub roj teeb mus rau hauv hluav taws xob hloov pauv. Qhov no yog qhov tseem ceeb rau cov ntawv thov xws li lub zog hnub ci, qhov twg lub zog DC tsim los ntawm cov vaj huam sib luag hnub ci yuav tsum tau hloov mus rau AC rau kev siv los ntawm cov khoom siv hauv tsev.
Rhais lus
Ib lub rectifier hloov cov hluav taws xob alternating current mus rau cov hluav taws xob ncaj qha. Nws yog siv rau hauv ntau yam khoom siv hluav taws xob uas qhov kev hloov pauv ntawm mains AC mus rau DC yog qhov tsim nyog los ua haujlwm cov khoom sab hauv.
Xaus
Lub zog hluav taws xob hloov pauv yog lub hauv paus tseem ceeb ntawm cov tshuab hluav taws xob niaj hnub no. Nws txoj kev ua haujlwm zoo hauv kev xa hluav taws xob, kev siv tau yooj yim, thiab kev yooj yim ntawm kev tswj hwm ua rau nws yog qhov kev xaiv zoo tshaj plaws rau ntau daim ntawv thov. Txawm hais tias lub zog hluav taws xob ncaj qha kuj ua lub luag haujlwm tseem ceeb, tshwj xeeb tshaj yog hauv kev khaws cia hluav taws xob thiab cov ntawv thov hluav taws xob rhiab heev, lub zog hluav taws xob hloov pauv tseem yog qhov kev daws teeb meem tseem ceeb rau kev faib tawm thiab siv hluav taws xob dav dav. Nrog rau kev nce qib ntawm cov thev naus laus zis hloov pauv hluav taws xob, kev sib xyaw ua ke ntawm AC thiab DC ua rau muaj kev sib koom ua ke zoo dua thiab kev siv hluav taws xob zoo dua yav tom ntej.
