Uyicoca njani ipaneli yolawulo ye Isithando somlilo esiphakathi? Amanyathelo okulungisa anenkcukacha

Ibhodi yokulawula isithando somlilo esiphakathi siyinxalenye ebaluleke kakhulu xa isithando somlilo esiphakathi sisebenza. Ukusuka ekukhethweni ukuya kwi-welding yebhodi yesekethe, ukuguqula iimpazamo kunye novavanyo lokuguga, likhonkco elibaluleke kakhulu. Phakathi kwabo, abasebenzisi abaninzi abayi kuwuhoya umsebenzi wokulungisa iimpazamo webhodi yokulawula, kwaye abazi ukuba bayicoca njani ibhodi yolawulo yesithando somlilo esiphakathi. Namhlanje ndishwankathele umxholo ofanelekileyo wephaneli yolawulo yokulungisa amanyathelo ukukuchazela, masiyijonge kunye.

1. Amanyathelo okulungisa inxenye yolungiso lwephaneli yolawulo yesithando somlilo esiphakathi

1. Ukukhuseleka kokulungiswa kweempazamo, ibhuloho ye-inverter kufuneka ivaliwe ngaphambi kokulungiswa.

2. Ukunikezelwa kombane wamanqanaba amathathu kunokubonelelwa, kungakhathaliseki ukulandelelana kwesigaba, kwaye ukhangele ukuba kukho ingxelo yokungaphumeleli kwesigaba. Ukuba kunjalo, khangela ukuba i-fuse engenayo ekhawulezayo yonakele.

3. Jika i-potentiometer “enikiweyo” kwiphaneli ukuya kwiwotshi enkulu, i-DC voltage waveform kufuneka iphantse ikhululwe ngokupheleleyo, kwaye zonke iintloko zamaza ezi-6 zingaphakathi. isalathiso ngeli xesha Malunga ne-380V. Emva koko ujike i-potentiometer “enikiweyo” kwiphaneli echasene newotshi ukuya encinci, i-DC voltage waveform iphantse ivalwe ngokupheleleyo, kwaye i-angle A imalunga ne-530 degrees ngeli xesha. Imveliso ye-DC waveform kufuneka iqhubeke kwaye igudileyo kulo lonke uluhlu lokutshintsha kwesigaba.

4. Kwimeko yokungaphumeleli kwamandla, qhagamshela i-inverter bridge ukwenza i-inverter ibangele i-pulse input, kwaye ususe umthwalo ochasayo kwi-rectifier bridge port. Guqula i-potentiometer yokulungisa i-“W1VF” kwibhodi yesiphaluka ukuya ekupheleni, (xa i-inverter overvoltage isenzeka ngexesha lenkqubo yokulungiswa kweempazamo, inokubonelela ngokukhuselwa kwe-overvoltage). Ukutshintshela kwipaneli yokulawula eyintloko imiselwe kwi-ON isikhundla, kwaye i-potentiometer “enikezelweyo” kwiphaneli ijikelezwe ngokuphambene.

5. Emva kokukhanyisa imizuzwana embalwa, vula i-potentiometer “enikiweyo” kwiphaneli ngokucotha ukwandisa. Ngeli xesha, ibhulorho ye-inverter iya kuvela kumazwe amabini asebenzayo, enye yibhulorho yokuguqula i-oscillating, enye iyibhulorho yokuguqula. Yintoni efunekayo ngeli xesha yi-inverter bridge uxhumano oluthe ngqo. Ukuba ibhulorho ye-inverter ikwimeko ye-oscillating, isigaba se-intermediate frequency voltage transformer sinokuhlengahlengiswa kwimeko yokungaphumeleli kwamandla, oko kukuthi, umgca wokuphuma we-intermediate frequency voltage transformer 20V winding unokulungiswa. Iza kuqala ukungcangcazela. Ekusebenzeni ngokukhawuleza ukuguqula i-potentiometer “enikwe” kwipaneli enkulu, qaphela ingqalelo kwimpendulo ye-ammeter. Ukuba isibonakaliso se-ammeter sikhula ngokukhawuleza, kufuneka ujike ngokukhawuleza i-potentiometer “inikwe” i-counterclockwise. ,

6. Ngeli xesha, kubonisa ukuba kukho ingxaki kwisekethe yesampulu yangoku, kwaye isistim ikwimo yangoku ye-loop loop. Jonga ukuba i-transformer yangoku idityanisiwe. Ukusebenza okuqhelekileyo kukuba njengoko i-potentiometer “enikiweyo” ikhula ngokukhawuleza, isibonakaliso se-ammeter siyanda. Xa i-potentiometer “enikiweyo” iyeka ukujikeleza, isibonakaliso se-ammeter sinokumisa ngokuzinzileyo kwinqanaba elithile.

7. Xa kukho into eyenzeka ngokudlulayo, jika i-potentiometer “oyinikiweyo” kwiphaneli ngasekunene ukwenza isalathiso se-ammeter sisondele malunga ne-50% yexabiso elilinganisiweyo. I-voltmeter yangoku yeglue ilinganisa i-voltage phakathi kwee-terminals ezintathu. Amandla ombane amathathu kufuneka alingane. Ukuba umahluko mkhulu kakhulu, oko kuthetha ukuba i-terminal enegama elifanayo le-transformer yangoku idibaniswe ngokungalunganga. Kufuneka kulungiswe, ngaphandle koko kuya kuchaphazela ukusebenza okuqhelekileyo komlawuli wangoku. .

8. Qhubeka ukuguqula i-potentiometer “inikwe” kwiphaneli ngokwewotshi ukuya ekupheleni, isalathiso se-ammeter kufuneka sisondele kwixabiso elilinganisiweyo, kwaye ulungelelanise yangoku kwibhodi yolawulo ephambili ngokuchasene newotshi ukondla i-potentiometer yokulungisa ukwenza i-DC. iammeter ibonisa imveliso ekalisiweyo yangoku. Ukusetwa komlinganiselo wangoku kugqityiwe. Ngale ndlela, ukulungiswa kwebhulorho yokulungisa ngokusisiseko kugqityiwe, kwaye ukulungiswa kwebhuloho ye-inverter kunokwenziwa.

9. Xa unikezelo lwamandla kwindawo yokulungisa umonakalo alukwazi ukunika umbane olinganiselweyo wesixhobo, ukusetwa kombane olinganisiweyo kunokuqhutywa xa isayithi lisebenza kumthwalo opheleleyo. Nangona kunjalo, kufuneka uqale unqume ukuba i-loop yesampulu yangoku isebenza ngokufanelekileyo phantsi kwemeko yangoku encinci.

Okwesibini, amanyathelo okulungisa i-inverter inxalenye yepaneli yokulawula yesithando somlilo esiphakathi

1, itheyibhile yokulinganisa frequency

I-DIP -2 yokutshintsha kwibhodi yokulawula ephambili imiselwe kwi-ON isikhundla, i-DIP -3 imiselwe kwi-OFF isikhundla, kwaye i-potentiometer “enikwe” kwiphaneli ijikisiwe i-counterclockwise. Qhagamshela i-oscilloscope kwi-tube case ye-Q5 okanye i-Q6, ulinganise enye i-excitation frequency ye-inverter trigger pulse (enye i-excitation frequency ingahlengahlengiswa yi-FMAX kunye ne-DIP-1), lungisa: W6 FHZ “i-fine-tune i-potentiometer ukwenza ukufundwa kwemitha yesantya Iyahambelana naleyo ilinganiswe yi-oscilloscope. Ukuba unikezelo lwamandla ombane oluphakathi lusebenzisa imitha yefrikhwensi ekhethekileyo ephakathi, eli nyathelo lokulungisa ingxaki linokukhutshwa.

2, ukuqala-up inverter

(1) Okokuqala, khangela ukuba umgca wesango le-inverter thyristor uqhagamshelwe ngokuchanekileyo, kwaye ingaba ukukhanya kwe-LED kwinqanaba lokugqibela le-inverter liqhelekileyo. Ukuba ayikhanyi, ithetha ukuba i-terminals ye-E ne-C ye-inverter stage iguqulwa; ke ibhodi yolawulo ephambili Khupha uxhulumaniso lwangaphandle lwe-UA ephezulu, kwaye ubone ukuba inqanaba le-inverter ye-LED ecinyiweyo ikwimo ye-diagonal ye-inverter bridge.

(2) Vula i-DIP-2 yokutshintsha kwe-DIP kwibhodi yokulawula ephambili kwindawo ye-ON kunye ne-DIP-3 kwindawo ye-OFF, vula i-potentiometer “enikwe” kwiphaneli ukuya ekupheleni, kwaye ulungise “W5” indawo yolawulo. I-FMAX “I-potentiometer ye-Fine-tuning kunye ne-DIP-1, yenza i-excitation frequency ibe phezulu kune-1.4 amaxesha e-tank circuit resonance frequency, “W3MAX” kunye ne “W4MIN” i-potentiometers yokulungelelanisa kakuhle iguqulwa kwindawo ephakathi. Jika i-potentiometer “enikiweyo” kwiphaneli ngokwewotshi ukuya kwisixa esikhulu, kwaye emva koko i-excitation frequency iqala ukutshayela ukusuka phezulu ukuya ezantsi. Ibhuloho ye-inverter ingena kwimeko yokusebenza kwaye iqala ukungcangcazela.

(3) Ukuba ayingcangcazeli, iya kuboniswa njengoko ivuselela umqondiso ukwenza izenzo eziphindaphindiweyo zokutshayela, ezinokuthi zilungelelanise isigaba se-intermediate frequency voltage transformer, oko kukuthi, ukubuyisela umva umgca wokuphuma kwe-20V yokujika isiguquli samandla ombane aphakathi. Ukuba umgca wokuphuma kwe-20V yokujika kwe-voltage ye-voltage ephakathi iguqulwa, iyasilela ukuqala. Ngeli xesha, kufuneka uqinisekise ukuba i-resonance frequency yesekethe yetanki ichanekile. Ungasebenzisa i-capacitance / inductance meter ukulinganisa i-capacitance ye-heater capacitor kunye ne-inductance ye-inductor. Bala i-resonant frequency yesekethe yetanki. Xa i-resonant frequency yesekethe yetanki ikuluhlu lwe-0.6 ukuya kwi-0.9 ye-excitation frequency, kufuneka kube lula ukuqala. Isinyathelo esilandelayo kukukhangela ukuba inverter thyristor yonakele.

3, seta i-angle yangaphambili ye-reverse lead

(1) Emva kokuba i-inverter iqala ukungcangcazela, unokwenza umsebenzi wokumisela i-angle yangaphambili ye-inverter. Jika i-DIP yokutshintsha i-DIP-2 kwindawo ye-ON kunye ne-DIP-3 kwindawo ye-OFF. I-pulser ibona i-waveform ye-100V yokuguqulwa kwe-voltage ye-voltage ye-voltage kunye nokulungelelanisa I-“W4MIN” i-potentiometer yokulungiswa kakuhle kwibhodi yokulawula eyona nto yenza ukuba i-angle yokuguqulwa kwesigaba sokuguqula i-angle ijikeleze i-25 °. Ngeli xesha, umlinganiselo we-voltage ye-intermediate frequency output voltage kwi-DC voltage ujikeleze i-1.3.

(2) Vula i-DIP-3 ukutshintshela kwi-ON isikhundla kwakhona, ulungise “W3 MAX” i-potentiometer yokunciphisa kwibhodi yokulawula ephambili, kwaye usethe i-angle yangaphambili ye-reverse conversion phase lead. Ngokwahlukeneyo ombane ophumayo ophakathi ophakathi kwe-750V, i-angle ye-conversion ye-conversion level lead angle kufuneka ibe malunga ne-42 °. Ngeli xesha, umlinganiselo we-voltage ye-intermediate frequency output voltage kwi-DC voltage yi-1.5.

(3) Ukuba kukho i-engile yangaphambili enkulu ngokugqithisileyo ye-inverter ngexesha lokulungisa, khangela ukuba i-tank circuit resonance frequency iphantsi kakhulu.

4. Ukusetwa kwe-voltage yemveliso elinganisiweyo

Misela i-voltage elinganisiweyo yokuphuma phantsi kweemeko zomthwalo wokukhanya, setha i-DIP yokutshintsha i-DIP-2 kwibhodi yokulawula ephambili kwi-ON isikhundla kunye ne-DIP-3 kwindawo ye-OFF. “Jika i-potentiometer ngasekunene, kwaye ibhulorho ye-inverter iyasebenza. Qhubeka nokujika i-potentiometer “enikiweyo” kwiphaneli ngokwewotshi ukwandisa. Ngeli xesha, i-voltage ye-intermediate frequency voltage isondele kwixabiso elilinganisiweyo. Lungisa i-“W1VF” yokulungisa kakuhle i-potentiometer echasene newotshi ukwenza i-voltage ye-outmediate frequency ifikelele kwixabiso elilinganisiweyo.