Driving welding inverter. Idayagram ebonisa inverter i welding

Eli nqaku liza kuqwalaselwa icebo classic of iwelding inverter. Ukuza kuthi ga ngoku, ithandwa kakhulu, ixabiso Kwanele kubo khona. Bona babe baninzi iimpawu ezintle, ezifana lula ukusebenza kunye nobunzima ephantsi. Kodwa ke, njengezinye izixhobo ze-elektroniki, umatshini iwelding ukuze nokuba yonakele. Kwaye ukuze ukwenza wokulungisa esemgangathweni, kufuneka ubuncinane ngokwemigqaliselo jikelele, sinengcamango yokuba nesakhiwo sayo, yintoni izinto iqulunqwe yesekethe inverter. Ngaphandle kwayo, uya kuba nako ukulungisa svarochniki kwisikimu esebenzisa transformers inverter. Ngoko ke, kufuneka ufunde okuninzi ithiyori malunga nale fowuni.

ulwazi olusisiseko malunga izixhobo inverter

Enyanisweni, le yunithi amandla, umgaqo esisetyenziswa ngayo iyafana naleyo kusetyenziswa iikhompyutha zobuqu. Uguqulo lwamandla ombane lwenzeka kwi-siseko efanayo, nangona ubukhulu kunye nomsebenzi kwezi zixhobo ezahlukeneyo. Kukho amanyathelo eziliqela ukuba kwenzeka inverter welding. Okokuqala kukho inguqu ombane nokuxuba onikezelwa kumgca 220 zibe DC. Malunga nendlela kwenzeka oku, uya kufunda kancinane ngezantsi, kwakunye ibonisa idayagram yesekethe ukuba inverter welding.

Ke ukuguqula le ombane kwenzeka kwi-bume, kodwa rhoqo aphezulu. Uyazi ukuba i-mbane rhoqo yangoku 50 Hz. Le inverter welding izixhobo yi ukunyuka ukuya kuma-80 Hz tysyach. Ngoko kuyimfuneko ukunciphisa ixabiso ombane i qho aphakamileyo. Ngelo inyathelo lokugqibela inguqu ombane aphantsi kunye rhoqo malunga 80 Hz tysyach. Esi sishwankathelo ke, eneneni, zonke izigaba enokwaphulwa phantsi zibe kumacandelo ezincinane. Kodwa ukuqonda siseko ukusebenza ngokwaneleyo.

Nto leyo eye yanciphisa ubunzima kumatshini iwelding

Ngoku, isiphaluka kutheni oko olukhetiweyo uhlobo inverter. Khangela ukuba koomatshini ukuwelda leyo isetyenzisiwe ngaphambili, kuquka zasekhaya. Zazo eziphambili injongo - ukunciphisa AC ombane ukuba kubonelelwa ukusuka zombane indlu kwixabiso ekhuselekileyo, kodwa ngoku lesibini enkulu. Ngenxa yesi sizathu, i-primary enamajikojiko ukuba inxeba ucingo sokurhuqa ngaphezu ezizisekondari. Ububanzi ucingo ixhomekeke njani ngoku engakanani ufumana kwi jiko. Apha ngezantsi kukho umzobo oganogram a inverter welding kweli nqaku. Ngononophelo ukufunda oko, ukuba ingcamango yintoni izinto angene kubo. maxa wambi Welding sicaca amperes amakhulu eziliqela. Ngenxa yokuba amandla abaguquli ezinjalo eziphakamileyo kakhulu, kodwa zisebenza kuphela xa nezihlandlo yangoku ka 50 Hz, ukongeza, ukuba babe ubungakanani elikhulu kunene. Njengoko unokuthelekelela, amaza igalelo kunye neziphumo yangoku efanayo. Ngamanye amazwi, ukuba iyasetyenziswa primary jiko 50 Hz, secondary ukususa umbane kunye efanayo parameters.

Le rhoqo ukusebenza lo inverter

Kodwa ngoku ngenxa umatshini inverter welding, nto leyo eyandisa amaza okusebenza ngokomyalelo asibhozo amawaka elilodwa, kwaye kwezinye izixhobo kunye nangaphezulu, kuba amaxesha amaninzi ukunciphisa ubungakanani abaguquli, asetyenziswa ukuguquka wamandla ombane. Ukuba ukwandisa amaza yokusebenza, nesiguquli nga mazincitshiswe amaxa ubuncinane ezine. Ngoko ke, lo ubunzima elipheleleyo zonke svarochnika ziya kuba lincinane kakhulu. Ixabiso Indleko yale isixhobo zanciphisa, ekubeni kukho ugcino lobhedu ngentsimbi, ezisetyenziswa xa kusenziwa abaguquli. Kodwa ukufumana kumaza enjalo, kufuneka usebenzise iisekethe inverter. Ziqulethe ophezulu-amandla transistors endle-isiphumo ukuba zisebenze kwimo engundoqo. Ngoncedo lwabo, umsinga ivuliwe ukusuka amaza efunekayo ukuze umsebenzi. Nceda uqaphele ukuba umsebenzi we-FET kuphela xa ombane rhoqo. Kubalulekile ukuphawula ukuba "Resanta" scheme iwelding inverter sifana kakhulu kulowo ezisetyenziswa kwezinye izixhobo.

Umgaqo esebenza ngayo rectifier

Ngoko ke, ngaphambi kokuba isicelo amandla kubo, kuyimfuneko ukuqondisa yangoku ozayo. Ukulungiselela le njongo rectifier, apho ilight inamandla. Bona lidibane kwisiphaluka kwebhulorho. Emva koko icandelo umda eziguquguqukayo usebenzisa capacitors electrolytic. Oku kwenzeka ekuqaleni komdlalo Inqanaba lokuqala ukuguqulwa. transistors ukusebenza Field udityanisiwe nesiguquli. Ngoncedo lwe ombane ifunyenwe asezantsi. Njengoko kukhankanyiwe ngasentla, ezi transistors ukuvelisa utshintshe nje lwangoku rhoqo ngamanye amaxesha ngaphezulu kwe 80 tysyach Hz kwi. Kucacile ukuba sombane kufuneka ziyilwe ukusebenza phantsi kwezi parameters. Engqonge isixhobo mincinane kakhulu, ukuyithelekisa kunye naleyo yayisetyenziswa ngo koomatshini sombane iwelding oluqhelekileyo. Kodwa ke amandla anawo efanayo. Kucacile ukuba kukho izinto ezininzi ezahlukeneyo eziyimfuneko ukulungiselela ukusebenza kubakho kumatshini welding. Kwaye ngoku iinkcukacha malunga nendlela ibloko nganye iwelding eziqhelekileyo inverter. It inamacandelo amabini eziphambili - wesiphaluka amandla kunye nolawulo.

isigaba rectifier

Le block kwenzeka ukuguqulwa AC leyo engena kuthungelwano 220 volts. Kuyo, kukho ilight semiconductor eziliqela ngamandla phezulu, kwakunye capacitors electrolytic kunye inductor. Oku kukhatshwa unika into ifildi zangoku kunye rhoqo yokusebenza-50 Hz uba rhoqo. Capacitors ziyafuneka ukuze ukusika icandelo bume, nto leyo kwi ombane kulungiseka. Nceda uqaphele ukuba kukho iindlela ezininzi ekulungiseni le kwiisekethe ombane. Ukuba uxhulumaniso kufuneka zenziwe kwinethiwekhi ontlantlu-ntathu, idayagram yesekethe lobuceducedu semiconductor iya kwahluka kancinci. Ngoko kuyimfuneko ukumisela umyalelo oko kufuneka yesekethe inverter welding. Izandla zabo, isixhobo enjalo ndawonye nje.

izihluzi

Qaphela kwakhona ukuba phantse isiqingatha ukunyuka ombane emva kokuba aye lokucoca ulwelo, eqokelelwa capacitors electrolytic. Ngamanye amazwi, ukuba kukho unikezelo mbane we-220 volts, ngoko ke iitheminali capacitor, ukuba wenze somlinganiselo, ngu 310 V. Ukuze lungisani yama- yangoku ukuthintela nakuphi na ingxolo ephezulu-kwamaza, kwakunye sibalekele ukuwela yabo kwigridi amandla, kuyimfuneko ukufakela lokucoca okhethekileyo. Kudla liya umcephe ukuba isilonda core icici sihlanganisa capacitors eziliqela.

isigaba inverter

Ngokuqhelekileyo, kuba ekuphunyezweni inverter usebenzisa transistors ezimbini ngamandla esebenza kwimo engundoqo. Kubalulekile ukuphawula ukuba oluzakunyuswa kwi bantu aluminium ubushushu. Kwakhona, kukho Ukupholisa eyongezelelweyo kunyanzeleka ne fan. Ngenxa yezi transistors Unakho ukuqhagamshela DC ombane, nto leyo ke anikwe transformer ukubetha. Ngaphezu koko, lo utshintshe nje kwenzeka nge rhoqo malunga 80 kHz. Kodwa kukho umahluko ukusuka lwangoku nokuxuba eliya umngxuma amandla emakhaya. Okokuqala, ixabiso frequency ngokwayo amaxesha amaninzi ngaphezu bubalaselayo. Okwesibini, ukumila ubume ombane nokuxuba ezibhaliweyo FETs buxande kunokuba sinusoid. Ukukhusela transistors ukusuka overvoltage ngokugqithiseleyo, kuyimfuneko ukusebenzisa isekethe eliquka resistors kunye capacitors. Kufuneka kuqatshelwe ukuba umzobo ukujikeleza + inverter ye welding ayikho ngaphandle kwezo zinto.

RF transformer

High-frequency sombane, apho ombane ukusuka transistors ukusebenza ikwimo ziguquka, ngaloo ndlela kuncitshiswa ixabiso yayo volts 65 nge-avareji. Kodwa le yangoku sibe phezu umyalelo 130 A. Kunokwenzeka ukuba ukuzoba isifaniso kunye coil ucinezelo, nto leyo lisetyenziswa iimoto. Le inverters iwelding primary kwemicimbi ethile ombane aphezulu, kodwa ngoku unalo oluncinane kakhulu. It liyasuswa ezizisekondari kwemicimbi ombane ixabiso elingaphantsi, kodwa ngoku inyuswe. Nceda uqaphele ukuba i-coil imoto ucinezelo isebenza kumgaqo umva. Oko kukuthi, lo ombane aphantsi ngoku enkulu inikezelwa primary jiko. A liyasuswa ombane ezizisekondari aphezulu, kodwa kwixabiso elincinane yangoku.

Le Imveliso rectifier

Kodwa kuyimfuneko ukujonga ukuba amacandelo enye ye-imeyl. segesi circuit inverter. Xa imveliso ye rectifier Ikwabekelwe, eqokelelwa ukusuka phezulu-ngamandla ilight semiconductor. Ukuba nodibaniso olunesantya esiphezulu kakhulu, bona zivulwa zize zivalwe ngexesha, nto leyo ngaphantsi kakhulu nanoseconds-50. Qaphela ukuyilwa inverters welding kufuneka pick up izinto semiconductor ngendlela yokuba ziyazanelisa parameters yokusebenza. ama Simple akayi ukumelana naloo msebenzi, njengoko abasayi kuba nako ukuvula kwaye esiphelweni ngendlela efanelekileyo. Kwangoko ukuqala zokufudumeza ngokugqithiseleyo, yaye ngenxa yoko, ukusilela. Ngenxa yesi sizathu, uyilo okanye ufakelo kwi wokulungisa ukuvelisa ode, apho kukho amaxesha utshintshe nje elifutshane kakhulu.