Yintoni i-inverter?
I-inverter iguqula amandla e-DC (ibhetri, ibhetri yokugcina) kumandla e-AC (ngokubanzi i-220V, i-50Hz sine wave). Iqukethe ibhulorho ye-inverter, ingqiqo yokulawula kunye nesekethe yokucoca.
Ukubeka nje, i-inverter sisixhobo sombane esiguqula i-voltage ephantsi (i-12 okanye i-24 volts okanye i-48 volts) ngokuthe ngqo kwi-volts ye-220 yangoku. Ngenxa yokuba sihlala sisebenzisa i-220-volt etshintshayo yokulungiswa kwangoku ukuyijika ibe yangoku ngokuthe ngqo, kwaye i-inverter isebenza kwelinye icala, ngoko ke igama.
Yintoni nasine wave inverter
Ii-inverters zinokuhlelwa ngokweemveliso zazo zamaza, a. yahlulwe yaba isikwere ii-inverters, b. ii-inverters ezilungisiweyo kunye c. ii-sine wave inverters.
Ke ngoko, inkcazo ye-sine wave inverter yi-inverter ephuma kuyo i-sine wave.
Inzuzo yayo kukuba i-wave waveform ilungile, ukugqwetheka kuphantsi kakhulu, kwaye imveliso yayo yamaza ihambelana ngokusisiseko ne-AC waveform yegridi engundoqo. Enyanisweni, umgangatho wamandla we-AC obonelelwe ngobalaseleyosine wave inverteriphezulu kunaleyo yegridi. I-sine wave inverter inokuphazamiseka okuncinci kwirediyo, izixhobo zonxibelelwano kunye nezixhobo ezichanekileyo, ingxolo ephantsi, ukulungelelaniswa komthwalo onamandla, unokuhlangabezana nokusetyenziswa kwayo yonke imithwalo ye-AC, kwaye umatshini wonke unokusebenza okuphezulu; ukungonakali kwayo kukuba umgca kunye nesalamane sokulungiswa kwamaza inversion I-inverter iyinkimbinkimbi, ineemfuno eziphezulu zokulawula iitshiphusi kunye nokugcinwa kweteknoloji, kwaye kuyabiza.
Ingaba isebenza kanjani?
Ngaphambi kokwazisa umgaqo wokusebenza wesine wave inverter, okokuqala ukwazisa umgaqo wokusebenza we-inverter.
I-inverter yi-DC ukuya kwi-AC transformer, eneneni yinkqubo yokuguqulwa kombane kunye nomguquli. Umguquli uguqula i-AC yombane wegridi yamandla kwi-stable 12V DC output, ngelixa i-inverter iguqula i-12V DC ye-voltage ye-Adapter kwi-high-frequency high-voltage AC; omabini la malungu aphinda asebenzise ubuchule bokumodareyitha kobubanzi bepulse (PWM) esetyenziswa rhoqo. Inxalenye yayo ephambili ngumlawuli odibeneyo we-PWM, i-Adapter isebenzisa i-UC3842, kwaye i-inverter isebenzisa i-TL5001 chip. Uluhlu lwe-voltage esebenzayo ye-TL5001 yi-3.6 ~ 40V, kwaye ixhotyiswe nge-amplifier yephutha, i-regulator, i-oscillator, i-PWM generator kunye nolawulo lwendawo efileyo, isiphaluka sokukhusela umbane ophantsi kunye nesiphaluka esifutshane sokukhusela isiphaluka.
I-interface ye-Input part: Kukho imiqondiso ye-3 kwi-input part, i-12V DC igalelo le-VIN, umsebenzi uvumela i-voltage ENB kunye ne-Panel ye-control control yangoku ye-DIM. I-VIN inikezelwa yi-Adapter, i-ENB i-voltage inikezelwa yi-MCU kwi-motherboard, ixabiso layo li-0 okanye i-3V, xa i-ENB = 0, i-inverter ingasebenzi, kwaye xa i-ENB = 3V, i-inverter ikwimeko yokusebenza eqhelekileyo; ngelixa i-DIM yombane Ubonelelwa yibhodi ephambili, uluhlu lwalo lokuhluka luphakathi kwe-0 kunye ne-5V. Amaxabiso ahlukeneyo e-DIM abuyiselwa kwi-terminal yempendulo yomlawuli we-PWM, kwaye ikhoyo ngoku enikezelwa yi-inverter kumthwalo nayo iya kwahluka. Ixabiso elincinci le-DIM, lincinci imveliso yangoku ye-inverter. inkulu.
I-Voltage startup circuit: Xa i-ENB ikwinqanaba eliphezulu, ikhupha amandla ombane aphezulu ukukhanyisa ityhubhu yokukhanya yePaneli.
Isilawuli se-PWM: Iqukethe le misebenzi ilandelayo: i-voltage yereferensi yangaphakathi, i-amplifier yempazamo, i-oscillator kunye ne-PWM, ukukhuselwa kwe-overvoltage, ukukhuselwa kwe-undervoltage, ukukhusela isiphaluka esifutshane, kunye ne-transistor ephumayo.
Ukuguqulwa kwe-DC: Isekethe yokuguqula i-voltage yenziwe nge-MOS yokutshintshela ityhubhu kunye ne-inductor yokugcina amandla. I-pulse yegalelo ikhuliswa yi-push-pull amplifier kwaye emva koko iqhube ityhubhu ye-MOS ukwenza isenzo sokutshintsha, ukwenzela ukuba i-voltage ye-DC ihlawulise kwaye ikhuphe i-inductor, ukuze enye isiphelo se-inductor ikwazi ukufumana i-AC Voltage.
I-LC oscillation kunye ne-output circuit: qinisekisa i-voltage ye-1600V efunekayo ukuze isibane siqale, kwaye unciphise umbane ukuya kwi-800V emva kokuba isibane siqalisiwe.
Ingxelo yombane wokuphuma: Xa umthwalo usebenza, umbane wesampulu ubuyiselwa umva ukuzinzisa ukuphuma kombane we-I inverter.
(Complex sine wave yesekethe idayagram)
Umahluko phakathi kwe-sine wave inverter kunye ne-inverter eqhelekileyo kukuba i-wave wave waveform yi-sine wave epheleleyo enezinga eliphantsi lokuphazamiseka, ngoko akukho kuphazamiseka koonomathotholo kunye nezixhobo zonxibelelwano, ingxolo iphantsi kakhulu, umsebenzi wokukhusela ugqityiwe. , kwaye ukusebenza kakuhle kukonke kuphezulu.
Isizathu sokubasine wave inverterinokukhupha i-sine wave epheleleyo kungenxa yokuba isebenzisa itekhnoloji ye-SPWM ehamba phambili kuneteknoloji ye-PWM.
Umgaqo-siseko we-SPWM usekelwe kumgaqo olinganayo wokuba ii-pulses zisebenze ngexesha lezixhobo zokusebenza: ukuba ii-pulses zisebenza ngexesha lezixhobo zokusebenza, imveliso yexabiso eliphezulu kunye nexesha lesenzo lilingana, kwaye ezi pulses zinokuqikelelwa ukuba zilingane.
I-SPWM ithelekisa i-wave engunxantathu kunye ne-frequency esisigxina kunye nexabiso lencopho esisigxina (efana nokutshintsha i-frequency 10k) kunye nereferensi yamaza e-sine (amaza asisiseko) amaza ombane aguquguqukayo kunye ne-voltage, ukuze kubethe i-voltage ye-DC (i-pulse kunye nokutshintsha umjikelo womsebenzi) ukuba uqikelelwe. isalathisi sine wave kwisixhobo. I-amplitude kunye nokuphindaphindwa kwereferensi ye-sine wave iyahlengahlengiswa ukuze ivelise i-DC voltage pulse wide modemodulation amaza alingana nereferensi yamaza e-sine ane-amplitudes ezahlukeneyo kunye neefrikhwensi.
Ixesha lokuposa: Feb-05-2024
