Kutheni ii-transformer zine-iron cores?

Kutheni ii-transformer zine-iron cores?

Iitransformer ziyinxalenye ebalulekileyo kwiinkqubo ezininzi zombane, zidlala indima ebalulekileyo ekunyuseni nasekuhliseni i-voltage kwiindlela ezahlukeneyo zokusebenza. Enye yezinto ezibalulekileyo kwitransformer yi-core yayo, edla ngokwenziwa ngentsimbi. Kodwa ngaba wakha wazibuza ukuba kutheni iitransformer zine-iron cores? Kweli nqaku, siza kuhlola izizathu zolu khetho loyilo kwaye sihlolisise iimpawu ezikhethekileyo zentsimbi ezenza ukuba ifaneleke ukusetyenziswa kwiitransformer.

Indima yesiseko se-transformer

Umbindi wetransformer unendima ebalulekileyo ekusebenzeni kwayo. Ubonelela ngendlela engaphantsi yokungafuni ukuhamba kwemagnethi eveliswa kukujika okuphambili, okuvumela ukuhamba kweflux ukuba kudibane nokujika okwesibini kwaye kubangele ivolthi kuyo. Ngokwenyani, umbindi unoxanduva lokudala isekethe yemagnethi ehambisa amandla ngokufanelekileyo ukusuka ekujikeni okuphambili ukuya ekujikeni okwesibini.

Intsimbi yeyona nto ikhethwayo kwii-transformer cores ngenxa yeempawu zayo ezintle zemagnethi. Inamandla aphezulu okungena, oko kuthetha ukuba inokusetyenziswa ngokulula njengemagnethi kwaye ingabi yimagnethi, nto leyo evumela ukudluliselwa kwamandla ngokufanelekileyo. Ukongeza, ii-iron cores zibonisa ukulahleka okuphantsi kwe-hysteresis, nto leyo ebalulekileyo ekunciphiseni ukulahleka kwamandla kwi-transformer.

Ngaphezu koko, amandla entsimbi okuqhuba i-magnetic flux ngokufanelekileyo enza ukuba ifaneleke kakuhle ukugxininisa i-flux ngaphakathi kwe-core, ngaloo ndlela inyusa ukusebenza kakuhle kwe-transformer. Ukusetyenziswa kwee-iron cores kukwanceda ekunciphiseni ubukhulu kunye nobunzima be-transformer ngelixa kugcinwa amandla aphezulu okudlulisa amandla.

Ngamafutshane, umsebenzi oyintloko we-transformer core kukubonelela ngendlela ye-magnetic flux, kwaye i-iron yinto ekhethwayo ngenxa yeempawu zayo ze-magnetic ezilungileyo.

Iimpawu zesinyithi ezenza ukuba zilungele ii-transformer cores

Iipropati ezininzi zesinyithi zenza ukuba ibe yinto efanelekileyo yokusetyenziswa kwii-transformer cores. Enye yezona mpawu zibalulekileyo kukungena kwayo okuphezulu, okuyenza ikwazi ukutsala umbane ngokulula kwaye isuse umbane xa kukho intsimi yemagnethi. Le mpawu ibalulekile ekudluliseleni amandla ngokufanelekileyo ukusuka kwi-primary winding ukuya kwi-secondary winding.

Enye impawu ephambili yesinyithi kukulahleka kwayo okuphantsi kwe-hysteresis. Ukulahleka kwe-hysteresis kubhekisa kumandla alahlekayo njengoko iindawo zemagnethi ezingaphakathi kwe-iron core zilungelelanisa kwaye zilungelelanise ukuphendula kumbane otshintshanayo odlula kwi-transformer. Ngokusebenzisa isinyithi esinelahleko ephantsi ye-hysteresis, ubungakanani bamandla achithekayo njengobushushu buyancitshiswa, nto leyo ebangela ukuba i-transformer isebenze kakuhle.

Ukongeza, isinyithi sinobuninzi be-saturation flux density, oko kuthetha ukuba sinokugcina inani elikhulu le-magnetic flux ngaphambi kokuba ifikelele kwi-saturation. Le propati ivumela i-transformer ukuba iphathe amanqanaba aphezulu e-current ngaphandle kokuba i-core igcwale nge-magnetic, ngaloo ndlela iqinisekisa ukusebenza ngokufanelekileyo kwe-transformer phantsi kweemeko ezahlukeneyo zomthwalo.

Iimpawu zesinyithi ezibalaseleyo zemagnethi, kunye nobuninzi bazo kunye nexabiso eliphantsi, zenza ukuba ibe yinto efiselekayo kakhulu kwii-transformer cores.

Ukuthelekisa nezinye izinto eziphambili

Nangona intsimbi iyeyona nto isetyenziswa kakhulu kwii-transformer cores, nezinye izinto ziye zasetyenziswa kule njongo. Enye yezinto ezinjalo yintsimbi, eneempawu ezintle ze-magnetic zentsimbi. Nangona kunjalo, intsimbi inokumelana nombane okuphezulu kunentsimbi, nto leyo enokubangela ilahleko enkulu yamandla e-eddy embindini. Ukongeza, intsimbi ibiza kakhulu kunentsimbi, nto leyo eyenza ukuba ingabi nandleko kwimveliso ye-transformer enkulu.

Ii-alloy zesinyithi ezi-amorphous ziye zaphuhliswa njengendlela eyahlukileyo kwii-cores zesinyithi zemveli ngenxa yokulahlekelwa kwazo yi-hysteresis ephantsi kakhulu. Ezi alloy zenziwe zizakhiwo ezingezizo iikristale ezibonisa ukulahleka kwamandla okuncinci xa ziphantsi kweendawo ezahlukeneyo zemagnethi. Nangona zibonelela ngokusebenza ngcono, iindleko eziphezulu zokwenza ezi alloy zithintele ukwamkelwa kwazo ngokubanzi kwimveliso ye-transformer.

Kwiminyaka yakutshanje, kuye kwakho umdla okhulayo ekusetyenzisweni kwee-ferrite cores kwizicelo ezithile, ngakumbi kwii-transformers ezisebenzisa i-high-frequency. Ii-ferrite cores zenziwe ngezinto ze-ceramic ezineempawu zemagnethi ezifanelekileyo ukusebenza kwii-frequency eziphakamileyo. Nangona zisenokungasebenzi kakuhle njengee-iron cores kwi-frequency ephantsi, ii-ferrite cores zibonelela ngeenzuzo ngokobukhulu kunye nobunzima kwiizicelo ezithile ze-high-frequency.

Ekugqibeleni, ukukhethwa kwezinto eziphambili kuxhomekeke kwiimfuno ezithile ze-transformer, kuquka izinto ezifana nobuninzi bokusebenza, iindleko, kunye nokusebenza kakuhle.

Inkqubo yokuvelisa iintsimbi zentsimbi

Ukuveliswa kwee-iron cores zee-transformers kubandakanya amanyathelo aliqela abalulekileyo, ukuqala ngokukhetha izinto zentsimbi okanye zentsimbi ezikumgangatho ophezulu. Izinto ezikhethiweyo emva koko ziyacutshungulwa ukuze zenze ii-laminations, ezingamaphepha amancinci esinyithi ahlanganiswe ndawonye ukwenza i-core.

Iilamination zigqunywe ngezinto zokukhusela ubushushu ukunciphisa ilahleko zamandla e-eddy kunye nemiphumo ye-hysteresis. Olu khuselo lukwanceda ekuthinteleni ukwakheka kwee-short-circuits ngaphakathi kwe-core, ukuqinisekisa ukusebenza kakuhle kwe-transformer.

Nje ukuba ii-laminations zilungisiwe, zidityaniswe kwisakhiwo esingundoqo, ngokuqhelekileyo ngendlela yesekethe yemagnethi evaliweyo ukuze kuphuculwe ukudluliselwa kwe-magnetic flux. Ingundoqo ingayilwa ngeemilo ezahlukeneyo kunye noqwalaselo ukuze ilungele iintlobo ezahlukeneyo zeetransformers kunye neemfuno ezithile zesicelo.

Emva kokuhlanganiswa, umbindi uvavanywa ngokungqongqo ukuqinisekisa ukusebenza kwawo kunye nokuthembeka kwawo. Oku kuquka ukujongwa kokuchaneka kobukhulu bawo, iimpawu zemagnethi, kunye nokuthembeka kobushushu. Naziphi na iziphene okanye iimpazamo ziyalungiswa ukuze kuhlangatyezwane nemigangatho efunekayo ngaphambi kokuba umbindi udityaniswe kwindibano yetransformer.

Inkqubo yokuvelisa ii-iron cores yinkalo ebalulekileyo kwimveliso ye-transformer, njengoko umgangatho kunye nokusebenza kwe-core kuchaphazela ngokuthe ngqo ukusebenza kakuhle kunye nokuthembeka kwe-transformer.

Isiphelo

Ukuqukumbela, ukusetyenziswa kweentsimbi zentsimbi kubalulekile ekusebenzeni kakuhle kweetransformer. Iipropati zemagnethi ezikhethekileyo zentsimbi, kuquka ukungena okuphezulu, ukulahleka kwe-hysteresis ephantsi, kunye noxinano oluphezulu lwe-flux, zenza ukuba ibe yinto efanelekileyo yokugxila i-magnetic flux kunye nokudlulisa amandla phakathi kwe-primary kunye ne-secondary windings.

Nangona ezinye izinto eziphambili ezifana nentsimbi, ii-alloys zesinyithi ezingafaniyo, kunye ne-ferrite zinezibonelelo zazo, i-iron ihlala iyeyona nto ikhethwayo kwiintlobo ezininzi zezicelo ze-transformer ngenxa yokudibanisa kwayo okuhle kweempawu zemagnethi, ukusebenza kakuhle kweendleko, kunye nokwenzeka kokuvelisa.

Njengoko imfuno yamandla ombane iqhubeka ikhula, uphuhliso oluqhubekayo lwezinto eziphambili ze-transformer kunye neenkqubo zokuvelisa luya kudlala indima ebalulekileyo ekuphuculeni ukusebenza kakuhle kunye nokuzinza kweenkqubo zamandla ombane. Ngophando oluqhubekayo kunye nokuvelisa izinto ezintsha, ikamva letekhnoloji ye-transformer lithembisa uyilo oluphambili nolulungisiweyo lwe-core ukuze kuzuze usetyenziso lwamandla olwahlukeneyo.