Ukuthi I-Power Transformer Iyakhula noma Iyaphula i-Voltage Kufuneka Yini?

I-Transformers zihamba kuphambili noma zihamba emuva amandla we-AC ngokusebenzisa ukuthiwa kwamandla ngokuphathwa kwamandla . Amandla okugcina akuyiyo kubhekisa kakhulu umlinganiselo phakathi kwenombolo yamaphuzu emvume yokuqala nemvume yesibili.

Uma imvume yesibili inemphakathi eningi kune yokuqala, i-transformer ihamba kuphambili amandla. Uma imvume yesibili inemphakathi encane, ihamba emuva amandla.

Nakuba indlela iyisodwa, i-transformer esebenza kahle kufanele ibhekise kwezinye izinto ezifanele: ukuvimba kwamandla, ubukhulu bomkhawulo, ifreqwensi, ukuvimba, ukuphakama kwetemperetsha, ubungakanani, nezindlela zokuphepha zokuphepha zokuphepha.

Yini ngalokhu TRANSFORMER ?

Itransforma yilungiselela indawo yokusebenzisa amandla okwelektroniki engenakho isikhundla sokusebenza, esithumela amandla phakathi kwezinyathelo ezimbili noma zinkulu ngokusebenzisa umoya wokuguqula wokuphakamisa.

Itransforma yendlela eyisisekelo inesigaba esintathu sokuphakamisa:

• Ukugcina kwesibhakabhaka sesokuqala: kubhalwe kusisenge sokufaka amandla
• Ukugcina kwesibhakabhaka sesesibili: kunika i-voltage kusisenge sokusebenza
• I-core yomoya wokuphakamisa: iyathumela umoya wokuphakamisa wokuguqula ngokulula kakhulu

Izinyathelo zesibhakabhaka sesokuqala nasesesibili zihlukile ngokwelektroniki kodwa zihlanganiswa ngokuphakamisa ngaphandle kwesikhundla. Lokhu hlukaniso kungakwazi ukuthuthukisa ubudlelwano bokusebenza nokukhindza ukuthi amandla asetshenziselwe ngokuzimela phakathi kwezinyathelo zesokuqala nasesesibili.

Kodwa, akukho transforma yonke eyahlukanisa. I autotransformer , umdla isibonelo, sebenzisa indawo eyodwa yokugcina futhi ngakho-ke ayisivumeli ukugxilana kwe-galvanic okufanayo.

Ukusebenza kwe-transformer kuyini?

Ukusebenza kwe-transformer kubase kule Indaba ka-Faraday yokuqondiswa kwemvelo yamagweba . Umongo wokuguqula wamagweba kuphakathi kwesikhumba sikhupha umongo wokugcina kusikhumba sokugcina.

Le ndlela yokusebenza iyakwaziwa ngamathegi amathathu.

1. Indawo yokugcina yesibonelo sikhipha umongo wamagweba

Lapha isivinini sesikhumba sokugcina sisebenzisa isivinini esihlukene, sikhupha isivinini esihlukene. Le sivinini sikhupha umongo wamagweba owenguqukile kumkhulu we-transformer.

2. Umkhulu uyaxhuma umongo wamagweba

I-core yomagnetic iyathumela iziqu zonke zokuguqula ngaphakathi kwezindlela zombili zokugcina. Izinkulungwane zokufaka i-core nezindlela zokwakha ziyakhethwa ukuze zinikeze ukuthumela okuphelele kwemagnetic ngaphakathi kwezindlela, ngakumbi ukuthintela iziqu zokugcina zokugcina neziqu zokugcina zokugcina.

3. I-winding yesibili iyavela i-voltage

Ngoba iziqu zokuguqula zokufaka i-core zifika ngaphakathi kwe-winding yesibili, zithumba i-voltage ngaphakathi kwalokho. I-voltage eyithumbelwe iyakhula ngokuvamile kwenombolo yezindlela zokugcina yesibili.

Lokhu uhlobo lwezinkinga luyafanana ngokugcina kwe-Faraday’s law futhi luyasibasisa sokuthi i-transformer esihlukene nasezinye. OpenStax University Physics iyabika ukuthuthukisa okuphelele wezinkinga zokuthuthukisa.

U TRANSFORMER I-formula yezindlela zokugcina

Kwizikhundla zesideal transformer:

Vs / Vp = Ns / Np

Lapho:

• Vp = I-voltage yokuqala yokuvela
• Vs = Uvoltye lwesiphambano sesibili
• Np = Inombolo yamaphakade emsulwa wokuphela
• Ns = Inombolo yamaphakade emsulwa wesibili

Ukulinganisa kovoltye kungakhomba ukulinganisa kwamaphakade amathathu.

Isitansifomaya sokuphakamisa

Isitansifomaya siphakamisa ivoltye lapho:

Ns > Np

Ngoko ke:

Vs > Vp

Umsulwa wesibili unemaphakade amaningi kune wokuphela, ngoko ke ivoltye yesibili iphakamile kune yokuphela.

Umbhali wokugcina imvula

Umbhali wokugcina imvula ukuthi:

Ns < Np

Ngoko ke:

Vs < Vp

Izihlango zokugcina izilinganiswe ngaphansi kwezihlango zokuphatha, ngakho-ke imvula yokugcina iyaphansi kwe mvula yokuphatha.

Umbhali wokugcina imvula ongumzuzwana wokugcina imvula

Kodwa izihlango zokuphatha nezihlango zokugcina zinamakhombo amaningi okufanana:

Ns = Np

Ngoko ke:

Vs ≈ Vp

Imvula yokuphatha iyafanana ngokuphelele nesikhathi sokuphatha.

Isibonelo Sembali Sokuthintela Isikhundla Sokuphakamisa

Ukuthi isikhundla sokuphakamisa kufanele sikhuthaze 230 V AC ku-24 V AC.

Isilinganiso sokuthintela esifunekayo siyilo loku:

Ns / Np = Vs / Vp

Ns / Np = 24 / 230

Ns / Np ≈ 0.104

Uma isikhundla sokuphakamisa sinesikhundla esinezinkamba ezingu-1,000:

Ns = 1,000 × 0.104

Ns ≈ 104 zinkamba

Ngoko ke, isikhundla sokuphakamisa esihle singakwazi ukuneza izinkamba ezingu-104 ngokwesibonelo.

Kwizikhundla zesithuthi esisemthethweni, umthengisi ungadibanisa amaphuzu okwesibili ukuze akhokhele isibonelo sesikhundla kanye ne-“voltage drop” ngaphakathi kwesikhundla.

Isibonelo Sesithuthi Esisemthethweni Sokuphakamisa Umoya

Lokhu kusho ukuthi isithuthi kufanele siphakamise umoya kusukela ku-120 V AC ku-240 V AC.

Isilinganiso sokuthintela esifunekayo siyilo loku:

Ns / Np = 240 / 120

Ns / Np = 2

Uma isikhundla sesinye sinesiphuzu esisihlanu emashumi:

Ns = 500 × 2

Ns = 1,000 amaphuzu

Ngakho ke isikhundla sesibili kufanele sibe nesiphuzu esisikhalipha kabili kune-sikhundla sesinye.

Kutheni kubhekwa umoya?

I-transformer ishuma i-current ngendlela eyodwa kwe-voltage.

Kwizithakazelo zokuphatha kwe-transformer, i-power yokungena iyalingana ne-power yokuphuma:

Vp × Ip = Vs × Is

Lapho:

• Vp = I-voltage yokuqala
• Ip = I-current yokuqala
• Vs = I-voltage yesibili
• Is = I-current yesibili

I-ratio yocurrent yi-:

Is / Ip = Np / Ns

Ngoko ke:

• I-transformer engeza: i-voltage ingezeka futhi i-current esitholakala inyuka.
• Umbhalo wokugcina imvula: imvula iphuma futhi umkhawulo wokufaka uyakhula.

Umbhalo awukwazi ukudala imvula eyinkulu. Kumbhalo owodwa, umkhawulo wokuphuma kuyisikhulu kune-umkhawulo wokufaka ngoba kubonakala ukungafani kwezilayili zokufaka, ukungafani kwezilayili zokuphuma, nokungafani kwezinye izilayili.

Kungani umbhalo wokugcina imvula wasezansi wasebenzisa isihlangu esikhulu?

Umbhalo wokugcina imvula wasezansi wokuphuma kusuka kumkhiqizo wokuphuma kuyisikhulu kune-umkhiqizo wokufaka. Ngakho ke kusobala ukuthi kufanele usebenzise isihlangu esikhulu.

Isikhundla sokushintsha kufanele sibhekwe ngokwalezi:

• Umkhawulo wokuphuma wokufaka
• Umkhawulo wokufaka okuvunyelwe
• Isikhati somkhiqizo
• Umgeni wemvume
• Umsebenzi
• Izimo zokuchitha
• Ubukhulu bekuphatha
• Isikhundla esisemthwakathini sokubhala

Ukusebenzisa iwire engaphansi kakhulu kuyenza ukuthi i-resistance, i-voltage drop, i-copper loss, kunye ne-temperature yomkhumbulo yakhwe. Ukuphakama kwe-temperature kungasiza ukuthi isilungelo sezinsila sifanele futhi kusenza umlando wokuphepha.

Kwizindlela zokuphakamisa izi-transformer, izinhlobo zokuphakamisa zezivoltage ziyasebenzisa izinyathelo ezingaphezu kwezinyathelo zezinyathelo ezincinci ngoba ziyadlala amandla angaphezu kwezinyathelo. Isizinga sakho sesikhundla sezinyathelo sibuyela kuzo zonke iziphakamiso zokufaka.

Ngani besebenzisa izi-transformer ukuthenga amandla?

Kukhona ukuthi ukuphakamisa i-voltage kuyinika ukuthi amandla ayiphezulu:

I = P / V

Lapho:

• I = Amperes
• P = Amandla
• V = I-voltage

Lapho i-voltage iphakamisa, amandla okuthengwa kwamanje akhula.

Ngoba i-current iyasquarwa kule mifanekiso, ukuncwabela i-current kungakwazi ukuncwabela ngokukhulu ukuhlaselwa kwe-conductor nokulahla kwesiphumo sokuthumela.

Amasistimu e-power ngoko sebenzisa amaphetha okuphakama ukuphakama i-voltage yomshini wokuqala ukuthumela kude. Emuva kwalokho, amaphetha okuvula ukuvula i-voltage ku-miyingo yokuthumela nezinye izinhlanganiselo zokusebenza. I-Department of Energy yase-United States ibhalise ngokufanayo ukuthi ukuthumela ngoku-high voltage kukhupha i-current okudingekayo nokuncwabela izinhlanganiselo zokulahla kwezinhloko. I-Department of Energy yase-United States

Ingakwenzeka na i-transformer ngokusebenza ngokwe-DC?

I-transformer engamandla ayidinga i-magnetic flux eshintshangayo futhi ngakho akakwazi ukuthintana ngokuzimisa i-DC voltage esiqondile.

Uma i-DC esiqondile ishiywe ngokushesha kwe-winding yomphetha wokuzimisa:

• Akukho ukuthintana okuzimisa we-transformer emuva kokugcina kwe-transient.
• I-current yewinding ingakwazi ukuba yakhulu kakhulu futhi ikhuleke.
• I-core ingakwazi ukusatura.
• I-winding ingakwazi ukudla kakhulu noma ukuphulwa.

Izindlela zokusinda izimilo zokusebenza ngokwezinye zizokhuthaza i-DC voltage ngokuvulula kakhulu kuqondiswe. I-waveform esingathandabuzi isinika amandla kwe-transformer yamandla okanye i-coupled inductor. Lokhu kukhona kwezinye zezindlela zokusinda ezingu- flyback, forward, push-pull, half-bridge, nokanye full-bridge.

Ukuchaza okukhulu kukuthi i-transformer yendlela eyenzile ayikwazi ukusinda i-DC engeziwe ngokuphelele; i-DC kufanele ibe yilokho okuvululwa ngokwezinye kwanoku.

Izifundo zokulinganisa vs. Ukusebenza kwesikhathi sokwakhiwa kwe-transformer

I-equation yokulinganisa kwe-turns-ratio iyachaza i-transformer engu-ideal. Izinhlelo zokwakhiwa zezinye zinezinkinga nokuphatha kwe-voltage.

Izinkinga zokusebenza kwe-copper

Izinkinga zokusebenza kwe-resistive kwe-conductor ziyi-:

Izinkinga zokusebenza = I² × R

Ngokwesibonelo sokugcina i-WordPress, lokhu kungakwazi ukubhalwa njengalo-:

Izinkinga zokusebenza = I × I × R

Lapho:

• I = Umongo owenziwa ngaphakathi kwe-conductor
• R = Ukuhambisa kwesikhala sokubambisana

Ngoba umoya uyaphakanyiswa kusuka kule kuthombwa, ukunciphisa umoya kungancipha kakhulu izinkinga zokuhambisa.

Ukuphatha kwesikhala sokubambisana

Isikhala sokubambisana sokugcina isikhala sokubambisana sisebenza ngokuguqula kungahleli kwezinkinga zokuphatha nokuphatha kwezinkinga zokuphatha. Ukuphatha kwesikhala sokubambisana kuchazwa ngokulandelayo:

• Umvume Wemikhumbi
• Umkhawulo wokusebenza
• Umvuzo owavumelwe
• Inani leziquketho zokuphakama
• Isikhala sokubambisana sokuphakama
• Ukuhambisa kwesikhala sokubambisana
• Ubukhulu besikhumba

Ukuphatha kwesikhala sokubambisana okungafanani

Akukho sikhala sokubambisana sokugcina sikhala sokubambisana esikhathini esibini. Ukuphatha kwesikhala sokubambisana okungafanani kuchaza ukuphatha kweziquketho futhi kungasiza ekuphatheni kwezinkinga zokuphatha kweziquketho.

Inani lamanje ngaphandle komthwalo

Ngaphandle kokuba kunezindlela ezinye zokusebenza, umkhosi wokuqala uyadlula umthelela ukuzimela isikhundla esihlukileyo futhi ukusabelisa izinkinga zokuzimela.

Ukuthola Kwesibuko

Izinkinga zama-khoburhu nezinkinga zokuzimela zisengeza isitha. Umkhosi wokuzimela kufanele abe phakathi kwemilinganiselo yezinkambo zokuzimela yakhe ngokwesikhundla sokusebenza nokwesikhundla sokuhlala kwezindawo zokusebenza.

Ukuphatha Kwemfowethu

Umvuwo wokuphuma kushintsha kancane phakathi kwesikhundla sokungasebenzi kanye nesikhundla sokusebenza kakhulu ngokwesikhundla sokuzimela sokugcina.

Ukuvimbela kovoltijhi kungabhalwa njengoko kuvameleka:

Ukuvimbela kovoltijhi (%) = [(Vno-load − Vfull-load) / Vfull-load] × 100

Ngalesi simo, abasayensi bayaqala ukubhala umvuwo wokungasebenzi wesikhundla sokuphuma okungaphezu kovoltijhi olwatholakala.

Ingaba ifrekhwenshi iyathinta ukubhalwa kwezikhundla zokuzimela?

Yebo. Ifrekhwenshi yisibalo esibalulekile sokubhalwa.

Kusukela emvulweni yomkhondo osheshayo, umvuwo wokuphuma wokushintsha okuhambelana kwi-RMS wokushintsha kuyatholakala ngokwesikhundla sokusebenza, inani lezinqambo, isikhundla sokuzimela, kunye nesilinganiso sokuzimela okukhulu.

V = 4.44 × f × N × A × Bmax

Lapho:

• V = I-voltijwes engezansi yokuqondwa kwe-RMS
• f = U-frekhwensi yoku-sebenza ngamahertz
• N = Inombolo yamaphuzu okuqondwa
• A = I-erhe yokuqondwa yomkhono wokuphakanyiswa
• Bmax = I-mkhonto wokuphakanyiswa okukhulu kakhulu

I-transformer esebenzisa i-60 Hz ayikwazi ukusebenza ngokuzenzakalelayo ngamahertz angu-50 ngokuvalekileyo. Ukuphula kwamafrekhwensi angaphepha ukuphakanyiswa kwe-magnetic flux density, okungaba ngokuthi umkhono uyakwakha, ukubhala kwe-current, isithunzi, nokuchitha.

Umthwali wokwenza kufanele abe nombiko wokufundwa kwamafrekhwensi ne-voltage ngaphambi kokugcina ukudesign.

Ukuthi Yini Ukusiza Kwesikhundla Sokuphakanya Okanye Sokuphezula

Ukudesign wokusha kwe-transformer kufanele kubuyekeze kune-voltage yokufaka nokuvuleka.

Faka lezi zindaba xa usiya ukubiza ukudesign noma ukubiza ukuthenga:

• Ukuvalelwa kwe-voltage okwenzekayo
• I-voltage okwenzekayo enzima ne-okwenzekayo okuphezulu
• Ifrekheni yesiphendulo
• I-voltage okuyodwa okuyodwa okufunekayo
• I-current yokuphuma okuphuma ngokuphakeme
• I-current okuphezulu nokude
• Uhlobo Lwe-Load
• I-rating ye-VA okufunekayo
• Umsebenzi
• Izinyathelo ezinkulu
• Indlela yokufaka
• Izinkinga zokubamba okwesikhumba okuhlanganisa izihlango
• Umgeni wemvume
• Izimo zokuchitha nokugcina isikhumba
• Ukuphakama okuphezulu okuvalelwayo
• Isigaba Sokugcinwa
• Amathuba okukhula kwe-dielectric
• Amathuba okukhula kwe-electrostatic noma kwe-magnetic
• Amathuba okukhula kwe-thermal fuse noma kwe-thermal protector
• Izwe lokuhambisana noma isivikelo
• Amathuba okuphelele kwe-safety ne-environmental
• Ukulinganiswa kokuproducwa kwezinhlobo

Ukunikeza amaphuzu ephatha yonke ayisiza ukungavimbi ukuthi izinhlobo ziyinkampana futhi ayisiza ekuvumelweni kwe-voltage, ukuthembeka, nokusebenza kwezikhathi eziningi.

Imibuzo Evame Ukubuzwa

I-transformer yokuvulula iyakhula amandla?

Cha. I-transformer yokuvulula iyakhula i-voltage kodwa iyanciphisa i-current esitholakala. Amandla akhethekayo ayalwa ngokuphela kunezinye i-transformer ezenziwa ngokwesibonelo ngoba inama amadolo, i-core, nezinye izinkinga.

I-transformer yokugcina iyathola i-current ngaso sonke isikhathi?

Kungakwenzela ukuthi kubekwe isikhundla sekondari esihle kakhulu ngokufanayo kwezinkinga zokusebenza, kodwa isikhundla sokusebenza sikhokhwa ngokuphathelene nokulawula kwezinkinga zokusebenza ne-VA rekhethelelwe yomkhakha.

Izihlango zokuphakama nezihlango zesikhundla sekondari zihlanganiswa?

Kumkhakha wokuvimbela, zihlanganiswe ngokwezinye futhi zihlanganiswa ngokwezinye ngumkhakha wokuvimbela. Kumkhakha wokuzinikela, isihlango sesinye sisihlanganisa, ngoko akukho ukuvimbela okufanayo kwezinye.

Ingaba umkhakha ungakwenzela amaqhina amaningi okusuka kwezinye?

Yebo. Umkhakha ungasebenzisa izihlango zesikhundla sekondari eziningi, izihlango zesikhundla sekondari esizibhalwe phakathi, noma izihlango zesikhundla ukukhokha amaqhina amaningi.

Ngini ngokubala i-VA yomkhakha?

Kwesikhundla esisheshayo sesikhundla sekondari se-AC:

VA = Vs × Is

Lapho:

• VA = I-VA rekhethelelwe yomkhakha
• Vs = Iqiniso lesikhundla sekondari
• Iyisiphumo sokusekondereya esisilinganiselwe

Isibonelo:

Umvuzo wesekondereya = 24 V AC
Isikhathi sesekondereya = 5 A

VA = 24 × 5

VA = 120 VA

Kuma-sekondereya amaningi, i-VA esifunekayo sibhalwa ngokubhekisele kuma-winding amabili, nokukhetha ukuthi yini umsebenzi, isikhathi sokusebenza, ubukhulu bakho, ukulungiswa, ukugcina, nokuphakama kwesithunzi.

Amatransformer okuhlanganisa nokuvula ama-Dingxin

UDingxin uyaphakha amatransformer okuhlanganisa, futhi amasolution amatransformer ayisikhiyela abasebenzi nezinhlayisi ezizokusebenza e-Europe.

Amatransformer ayisakhiwa ngokwesikhundla sokufaka, sokuthumela, sokuphakama, nokusebenza, futhi:

• Amavolti okufaka nokuthumela okuhlanganisa
• Amathuba okukhula nokusula
• Amathuba amaningi okwesibili
• Amathuba aye-EI nezokuthekwisa
• amathuba okusebenza kwe-50 Hz ne-60 Hz
• Amathuba okuhlanganiswa kwe-VA
• Amathamba okugqibela, amathamba okugcina, amathamba okuthintela, nokukhetha ukuthintela
• Ukuvimbela kwemithambo yekhilikhitha
• Amaphutha ethemperetsha namaprotector ethemperetsha
• Amathuba okuvimbela okuphatha isimo sokusebenza
• Amathuba aphathelene nesifundo sesifundiswano sokumakhiwe ngamaphutha

Kufanele kubhekwe ngokuphelele ukuthi kuyasebenza kahle nokuthi kuyafanele kusetyenziswa ngokwesifundo ngokwesikhathi sokusebenzisa isikhombisa, izinto ezizokusebenziswa, nokomkhakha wokugcina.

Qopha Isikhombisa Esisodwa Ngokwesifundo

Udinga isikhombisa esinamathuba amaningi, amandla okusebenza, ubukhulu, ubude bokugcina, noma indlela yokufaka?

Thumela lezi zinformesheni kuDingxin:

1. I-voltage yokungena noma ifreqwensi
2. Ukuvalelwa okudingekayo nokulula
3. Izimo zokusebenza ngokuphansi kwezimiso nezimo zokusebenza ngokuphelele
4. Izinyathelo ezinkulu
5. Imizamo yokubeka nokulinkela
6. Izinga Lokusebenza
7. Ikhomkhakha lokugcina nokuthi kufanele kusebenze kahle
8. Inombolo yokubuyisela eyayidingekayo

Xhuma uDingxin manje ukuthi uthule ukubheka ngokwesifundo, ukuthenga isikhombisa esisodwa ngokwesifundo, isampuli, noma ukuthenga umbhalo wokuthenga.