Inkcazo eneenkcukacha ye kumnya isicelo semodyuli

1. Iinkalo zokusetyenziswa kweemodyuli ze-SCR

Le modyuli ehlakaniphile isetyenziswa ngokubanzi kwizicelo ezifana nokulawula ubushushu, ubumnyama, ukuvuswa, i-electroplating, i-electrolysis, ukutshaja kunye nokukhupha, oomatshini bombane we-welding, i-plasma arcs, izixhobo zombane ze-inverter, njl., apho amandla ombane kufuneka ahlengahlengiswe kwaye aguqulwe, njenge njengeshishini, unxibelelwano, kunye nomkhosi. Ulawulo oluhlukeneyo lombane, izixhobo zombane, njl. njl ngaphezulu kwamandla ombane, ngaphezulu kobushushu, kunye nokulinganisa. Umsebenzi okhuselayo.

2. Indlela yokulawula yemodyuli ye-thyristor

Ngokusebenzisa ujongano lolawulo lwemodyuli yegalelo i-voltage ehlengahlengiswayo okanye isiginali yangoku, umbane ophumayo wemodyuli unokuhlengahlengiswa ngokutyibilikayo ngokulungelelanisa ubungakanani bomqondiso, ukuze kuqondwe inkqubo yombane wokuphuma kwemodyuli ukusuka kwi-0V ukuya kuyo nayiphi na indawo okanye kuyo yonke intsebenzo. .

I-Voltage okanye isignali yangoku inokuthatyathwa kwizixhobo ezahlukeneyo zokulawula, i-computer D/A output, i-potentiometer yahlula ngokuthe ngqo i-voltage esuka kumbane we-DC kunye nezinye iindlela; uphawu lolawulo lwamkela i-0～5V, 0～10V, 4～20mA iindlela ezintathu ezisetyenziswa ngokuqhelekileyo Ifom yokulawula.

3. Ukulawula izibuko kunye nomgca wokulawula wemodyuli ye-SCR

I-interface yokulawula imodyuli ye-terminal ineefom ezintathu: i-5-pin, i-9-pin kunye ne-15-pin, ehambelana ne-5-pin, i-9-pin, kunye ne-15-pin yokulawula imigca ngokulandelanayo. Iimveliso ezisebenzisa imiqondiso yombane zisebenzisa kuphela izibuko ezintlanu zokuqala, kwaye ezinye zizikhonkwane ezingenanto. Isiginali yangoku ye-9-pin igalelo lomqondiso. Intambo yobhedu yocingo olukhuselayo lwentambo yokulawula kufuneka idityaniswe kwi-DC yocingo oluphantsi komhlaba. Qaphela ukuba ungaqhagamshelani nezinye izikhonkwane. Iitheminali zi-short-circuited ukuphepha ukungasebenzi okanye ukutshiswa okunokwenzeka kwemodyuli.

Kukho amanani kwisokethi yolawulo lwemodyuli kunye nesokethi yomgca wolawulo, nceda ungqinelane nganye nganye, kwaye ungabuyi umva uxhulumaniso. La mazibuko amathandathu angasentla ngamazibuko asisiseko semodyuli, kwaye amanye amazibuko akhethekileyo, asetyenziswa kuphela kwiimveliso ezinemisebenzi emininzi. Iinyawo eziseleyo zeemveliso zokulawula uxinzelelo eziqhelekileyo azinanto.

4. Itheyibhile yokuthelekisa yomsebenzi wepini nganye kunye nombala womgca wokulawula

Inombolo yepini yomsebenzi we-pin kunye nombala okhokelayo ohambelanayo 5-pin isiqhagamshelanisi 9-pin isiqhagamshelanisi 15-pin isiqhagamshelanisi 12-pin +5V1 (bomvu) 1 (bomvu) 4 (bomvu) GND2 (mnyama) 2 (mnyama) 13 (mnyama) GND3 (mnyama) 3 (omnyama nomhlophe) 10 (omnyama nomhlophe) CON2V4 (umthubi ophakathi) 4 (umthubi ophakathi) 1 (umthubi ophakathi) TESTE5 (orenji) 5 (orenji) 20 (orenji) CON9mA 9 (brown) XNUMX (brown)

5. Hlangana neemeko eziyimfuneko zomsebenzi wemodyuli ye-SCR

Le miqathango ilandelayo kufuneka ifezekiswe xa kusetyenziswa imodyuli:

(1) + 12V DC unikezelo lwamandla: unikezelo lwamandla okusebenza kwisiphaluka solawulo lwangaphakathi lwemodyuli.

① Imfuno yamandla ombane ophumayo: +12V amandla ombane: 12±0.5V, i-ripple voltage ingaphantsi kwe-20mv.

② Iimfuno zangoku zemveliso: iimveliso ezinemini yangoku engaphantsi kwe-500 amperes: I+12V> 0.5A, iimveliso ezinomthamo omkhulu kune-500 amperes: I+12V> 1A.

(2) Isignali yokulawula: 0～10V okanye 4～20mA isignali yokulawula, esetyenziselwa ukulungelelanisa umbane wokuphuma. I-pole positive ixhunyiwe kwi-CON10V okanye i-CON20mA, kwaye i-pole negative ixhunywe kwi-GND1.

(3) Unikezelo lwamandla kunye nomthwalo: Ukunikezelwa kombane ngokuqhelekileyo kumbane wegridi, kunye ne-voltage engaphantsi kwe-460V okanye i-transformer yombane, eqhagamshelwe kwi-terminal igalelo lemodyuli; umthwalo sisixhobo sombane, esiqhagamshelwe kwi-terminal ephumayo yemodyuli.

6. Ubudlelwane phakathi kwe-angle yokuqhuba kunye nemveliso yangoku yemodyuli

I-angle yokuqhuba yemodyuli ihambelana ngokuthe ngqo kubuninzi bangoku ukuba imodyuli inokukhupha. Umjelo okhoyo wemodyuli ngowona mkhulu wangoku onokuthi uphume kwi-angle ephezulu yokuqhuba. Kwi-engile yokuqhuba encinci (umyinge wombane ophumayo kumbane wegalelo uncinci kakhulu), ixabiso lencopho yangoku likhulu kakhulu, kodwa ixabiso elisebenzayo langoku lincinci kakhulu (iimitha zeDC zibonisa ixabiso eliphakathi, kunye neemitha ze-AC. bonisa i-non-sinusoidal yangoku, encinci kunexabiso lokwenyani) , Kodwa ixabiso elisebenzayo lemveliso yangoku likhulu kakhulu, kwaye ukufudumeza isixhobo se-semiconductor kuhambelana nesikwere sexabiso elisebenzayo, eliya kubangela ukuba imodyuli shushu okanye ude utshise. Ngoko ke, imodyuli kufuneka ikhethwe ukuba isebenze ngaphezu kwe-65% ye-angle ephezulu yokuqhuba, kwaye i-voltage yokulawula kufuneka ibe ngaphezu kwe-5V.

7. Indlela yokukhetha yenkcazo yemodyuli ye-SCR

Ukuqwalasela ukuba iimveliso ze-thyristor ziyimisinga ye-non-sinusoidal ngokubanzi, kukho ingxaki ye-angle ye-conduction kunye nomthwalo wangoku uneenguqu ezithile kunye nokungazinzi kwezinto, kunye ne-chip ye-thyristor inokuxhathisa okungahambi kakuhle kwimpembelelo yangoku, ngoko kufuneka ikhethwe xa imodyuli yangoku inkcazo. zikhethiwe. Shiya umda othile. Indlela yokhetho ecetyiswayo ingabalwa ngokwefomula ilandelayo:

I>K×I load×U maximum∕U real

I-K: into yokhuseleko, umthwalo ochasayo K = 1.5, umthwalo ongenisayo K = 2;

Iload: ubuninzi bangoku obuhamba ngomthwalo; Okwenyani: ubuncinci bombane kumthwalo;

Umax: ubuninzi bombane onokukhutshwa yimodyuli; (imodyuli yokulungisa izigaba ezithathu ngamaxesha e-1.35 i-voltage yokufaka, imodyuli ye-single-phase rectifier yi-0.9 amaxesha e-voltage input, kunye nezinye iinkcukacha ngamaxesha e-1.0);

Mna: Obona buncinci bemodyuli kufuneka bukhethwe, kwaye imodyuli yangoku yemodyuli kufuneka ibenkulu kuneli xabiso.

Imeko yokutshatyalaliswa kobushushu bemodyuli ihambelana ngqo nobomi benkonzo kunye nomthamo wexesha elifutshane lomthwalo wemveliso. Iqondo eliphantsi lobushushu, inkulu imveliso yangoku yemodyuli. Ngoko ke, i-radiator kunye nefeni kufuneka ixhotyiswe ekusebenziseni. Kunconywa ukusebenzisa iimveliso ngokukhusela ukufudumala. Ukuba kukho iimeko zokuchithwa kokushisa kwamanzi, ukuchithwa kwamanzi okupholisa amanzi kuyakhethwa. Emva kokubala okungqongqo, sizimisele iimodeli zeradiyetha ukuba iimodeli ezahlukeneyo zeemveliso kufuneka zixhotyiswe. Kunconywa ukusebenzisa ii-radiator kunye nabalandeli abahambelana nomenzi. Xa umsebenzisi eyilungiselela, yikhethe ngokwale migaqo ilandelayo:

1. Isantya somoya se-axial flow fan kufuneka sibe sikhulu kune-6m/s;

2. Kufuneka ikwazi ukuqinisekisa ukuba ubushushu beplate ephantsi yokupholisa ayikho ngaphezu kwe-80℃ xa imodyuli isebenza ngokuqhelekileyo;

3. Xa umthwalo wemodyuli ulula, ubukhulu be-radiator bunokuncitshiswa okanye ukupholisa kwendalo kunokwamkelwa;

4. Xa kusetyenziswa ukupholisa kwendalo, umoya ojikeleze i-radiator unokufikelela kwi-convection kwaye wandise ngokufanelekileyo indawo ye-radiator;

5. Zonke izikrufu zokuqinisa imodyuli kufuneka ziqiniswe, kwaye i-terminals ye-crimping kufuneka idibaniswe ngokuqinileyo ukunciphisa ukuveliswa kobushushu besibini. Umaleko wegrisi ye-thermal okanye i-thermal pad ubungakanani bepleyiti esezantsi kufuneka ifakwe phakathi kwepleyiti esezantsi yemodyuli kunye neradiyetha. Ukuze ufezekise umphumo ongcono wokutshatyalaliswa kobushushu.

8. Ukufakwa kunye nokugcinwa kwemodyuli ye-thyristor

(1) Gcoba umaleko wegrisi ye-silicone ye-thermal kumphezulu wemodyuli ehambisa ubushushu ezantsi ipleyiti kunye nomphezulu weradiyetha ngokulinganayo, uze ulungise imodyuli kwiradiyetha ngezikrufu ezine. Musa ukuqinisa izikrufu zokulungisa ngexesha. Ngokulinganayo, phinda amaxesha amaninzi de ibe yomelele, ukuze ipleyiti esezantsi yemodyuli isondelelene nomphezulu weradiyetha.

(2) Emva kokudibanisa i-radiator kunye nefeni ngokweemfuno, zilungise ngokuthe nkqo kwindawo efanelekileyo ye-chassis.

(3) Lubophe ngokuqinileyo ucingo lobhedu ngeteyiphu yeringi yetheminali, kukhethwa ukuba luntywiliselwe enkonkxeni, emva koko ulufake kwityhubhu ekhuselayo ekwaziyo ukushwabana nobushushu, kwaye uyifudumeze ngomoya oshushu ukuyicutheka. Lungisa isiphelo se-terminal kwi-electrode yemodyuli kwaye ugcine unxibelelwano oluhle loxinzelelo lwendiza. Akuvunyelwe ngokungqongqo ukukrazula ucingo lobhedu lwentambo ngokuthe ngqo kwi-electrode yemodyuli.

(4) Ukuze ukwandise ubomi benkonzo yemveliso, kucetyiswa ukuba uyigcine rhoqo emva kweenyanga ezi-3-4, utshintshe igrisi ye-thermal, ususe uthuli olungaphezulu, kwaye uqinise izikrini ze-crimping.

Inkampani icebisa iimveliso zemodyuli: Imodyuli ye-MTC thyristor, imodyuli ye-MDC yokulungisa, imodyuli ye-MFC, njl.