Nyob rau tib lub sijhawm nrog kev kawm txog cov khoom ntawm semiconductors, kuj tseem muaj kev txhim kho hauv cov cuab yeej tsim khoom raws li lawv. Maj mam, ntau thiab ntau cov ntsiab lus tshiab tshwm sim, nrog rau kev ua haujlwm zoo. Thawj IGBT transistor tau tshwm sim hauv xyoo 1985 thiab ua ke cov khoom tshwj xeeb ntawm bipolar thiab cov qauv hauv teb. Raws li nws tau muab tawm, ob hom khoom siv hluav taws xob semiconductor paub thaum lub sijhawm ntawd tuaj yeem "sib koom" ua ke. Nws yog lawv uas tsim cov qauv uas tau los ua tshiab thiab maj mam tau txais koob meej ntawm cov neeg tsim khoom ntawm hluav taws xob circuits. Cov ntawv luv IGBT (Insulated Gate Bipolar Transistors) nws tus kheej yog hais txog kev tsim cov hybrid Circuit Court raws li bipolar thiab field-effect transistors. Nyob rau tib lub sijhawm, muaj peev xwm ua haujlwm nrog cov hluav taws xob siab hauv cov hluav taws xob hluav taws xob ntawm ib lub qauv tau ua ke nrog kev tawm tswv yim siab ntawm lwm tus.
Lub IGBT niaj hnub no txawv ntawm nws cov thawj coj. Qhov tseeb yog tias cov tshuab ntawm lawv cov khoom tsim tau maj mam txhim kho. Txij li thaum cov tsos ntawm thawj lub caij nrog xws liqauv, nws lub ntsiab tsis tau hloov mus rau qhov zoo dua:
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igbt transistor ua Qhov hloov hluav taws xob tau nce ntawm 1000V txog 4500V. Qhov no ua rau nws tuaj yeem siv fais fab modules thaum ua haujlwm hauv high voltage circuits. Cov ntsiab lus tsis sib xws thiab cov qauv tau dhau los ua kev ntseeg siab hauv kev ua haujlwm nrog inductance hauv lub zog hluav taws xob thiab tiv thaiv ntau dua los ntawm lub suab nrov impulse.
- Qhov hloov pauv tam sim no rau cov khoom sib cais tau loj hlob mus rau 600A hauv kev sib cais thiab mus txog 1800A hauv kev tsim qauv. Qhov no ua rau nws muaj peev xwm hloov tau lub zog hluav taws xob tam sim no thiab siv IGBT transistor los ua haujlwm nrog lub cev muaj zog, cua sov, ntau yam kev siv, thiab lwm yam.
- Direct on-state voltage poob poob rau 1V. Qhov no ua rau nws muaj peev xwm txo tau qhov chaw ntawm cov hluav taws xob tshem tawm hluav taws xob thiab tib lub sijhawm txo qhov kev pheej hmoo ntawm kev ua tsis tiav los ntawm thermal tawg.
- Lub sijhawm hloov pauv hauv cov khoom siv niaj hnub no nce mus txog 75 Hz, uas tso cai rau lawv siv rau hauv cov txheej txheem tsav hluav taws xob tshiab. Tshwj xeeb, lawv tau ua tiav siv nyob rau hauv zaus converters. Cov khoom siv no tau nruab nrog PWM maub los, uas ua haujlwm nrog lub module, lub ntsiab tseem ceeb uas yog IGBT transistor. Cov neeg hloov pauv zaus tau maj mam hloov cov txheej txheem tswj hluav taws xob ib txwm muaj.
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igbt transistor tswj Qhov kev ua tau zoo ntawm cov cuab yeej kuj tau nce siab heev. Niaj hnub no IGBT transistors muaj di / dt=200µs. Qhov no yog hais txog lub sijhawm sivenable/disable. Piv rau thawj cov qauv, qhov kev ua tau zoo tau nce tsib zaug. Kev nce qhov ntsuas no cuam tshuam rau qhov hloov pauv zaus, uas yog qhov tseem ceeb thaum ua haujlwm nrog cov khoom siv uas siv lub hauv paus ntsiab lus ntawm PWM tswj.
Cov hluav taws xob hluav taws xob uas tswj tau IGBT transistor kuj tau txhim kho. Cov kev cai tseem ceeb uas tau muab tso rau ntawm lawv yog los xyuas kom muaj kev nyab xeeb thiab txhim khu kev qha hloov ntawm lub cuab yeej. Lawv yuav tsum coj mus rau hauv tus account tag nrho cov tsis muaj zog ntawm lub transistor, tshwj xeeb tshaj yog, nws "ntshai" ntawm overvoltage thiab hluav taws xob zoo li qub.
