Kawm cov khoom ntawm cov khoom siv hluav taws xob ua rau nws muaj peev xwm tsim cov ntsiab lus tshiab uas tau siv ntau yam hauv hluav taws xob circuits. Cov cuab yeej muaj zog dua maj mam tshwm sim, uas ua rau nws muaj peev xwm hloov hluav taws xob circuits ntawm lub zog siab.
Ib qho piv txwv zoo ntawm qhov no yog thyristor converter. Los ntawm lub sij hawm ntawm nws cov tsos, nws pib txaus siab rau qhov zoo-deserved muaj koob meej ntawm designers. Cov cuab yeej no nquag siv nyob rau hauv ntau yam hluav taws xob circuits: starters thiab chargers, vuam tshuab, heaters, inverters, tswj rectifiers, thiab lwm yam. Qhov no tsis yog ib daim ntawv teev tag nrho cov khoom siv uas siv lub thyristor converter.
Sijhawm dhau los, cov cuab yeej muaj zog tau tshwm sim, nrog kev pabcuam uas nws tuaj yeem tswj tau qhov ceev ntawm lub tshuab hluav taws xob lossis kev teeb tsa thermal. Lawv tau pib nquag siv hauv kev tsim khoom, thiab qee zaum txawm hloov lub "generator-engine" system uas yog ib txwm nyob rau lub sijhawm ntawd.(Y-D).
Txhim kho cov txheej txheem tswj tau ua kom muaj kev ntseeg siab ntawm cov no
khoom. Lub zog thyristor converter muaj peev xwm tswj tau qhov excitation tam sim no los yog txuas ncaj qha mus rau lub cev muaj zog armature circuit. Txawm li cas los xij, thawj zaug pulse-phase tswj systems (PIPS) feem ntau ua haujlwm nrog qhov tsis raug. Qhov no tuaj yeem ua rau, piv txwv li, mus rau "tipping" ntawm lub inverter thiab qhov tsis ua haujlwm ntawm lub zog. Lub hauv paus tsim kuj tseem tshuav ntau yam uas xav tau. Thaum lub sij hawm, cov teeb meem no ploj mus. Cov khoom siv hluav taws xob muaj kev ntseeg siab tau tshwm sim uas tswj tau kev ntseeg siab thiab, yog tias tsim nyog, tiv thaiv lub thyristor hloov dua siab tshiab. Nws tseem yog ib qho tsim nyog yuav tsum nco ntsoov qhov ua tau zoo, kev tswj xyuas zoo thiab qhov me me ntawm cov cuab yeej no cuam tshuam nrog lwm cov tshuab.
Tab sis, ntxiv rau qhov ua tau zoo, cov khoom siv no kuj muaj qee qhov tsis zoo ntawm kev cuam tshuam rau lub zog hluav taws xob:
- Qhov piv ntawm reactive thiab nquag zog thaum lawv siv cov kev hloov pauv tsis yog qhov zoo dua rau cov khoom siv sib txuas. Txhawm rau txuag cos φ, koj yuav tsum siv cov khoom siv hluav taws xob reactive raws li cov capacitors.
- Thaum lawv ua haujlwm, thyristor hloov pauv tau ua rau muaj kuab paug rau lub zog nrog kev cuam tshuam ntau zaus. Txhawm rau tiv thaiv qhov tsis txaus no, tshwj xeeb R-C circuits raug siv.
Nrog kev pab los ntawm cov cuab yeej tsim tshwj xeeb, koj tuaj yeem hloov qhov noparameter, xws li mains zaus. Nws yog siv nyob rau hauv lub lag luam ntawm induction furnaces, nyob rau hauv hlau tsim los yog nyob rau hauv lwm yam hluav taws xob installation. Txoj haujlwm no yog ua los ntawm thyristor zaus converter tshwj xeeb uas tsim los rau lub hom phiaj no. Nws tsim ua rau nws ua tau kom txhim kho cov thev naus laus zis ntawm kev ua hlau hauv kev tsim khoom uas muaj nyob rau lub sijhawm ntawd.
Lub sijhawm dhau mus, lwm yam khoom siv tau tshwm sim uas ua haujlwm ntawm cov qauv sib txawv kiag li. Circuits raws li muaj zog IGBT transistors tau tsim, uas yog siv ntau dua los tswj lub zog me me thiab nruab nrab lub zog. Lawv maj mam hloov cov tshuab uas siv tsis tau.
