Unraveling subharmonic oscillation nyob rau hauv lub ncov tam sim no hom ntawm hloov lub zog fais fab khoom
DC - dc sweetting fais fab khoom siv tau siv dav hlau ntawm cov khoom siv hluav taws xob, kev ua tau hluav taws xob, thiab ua haujlwm ruaj khov, thiab tau nkag mus rau ib lub sijhawm sai sai. DC - DC Switching Fais Fab Khoom Siv Power Semiconductors raws li hloov cov zis hluav taws xob los ntawm kev tswj lub luag haujlwm ntawm lub zog. Nws cov kev tswj hwm hluav taws xob topology tau muab faib ua hom tam sim no thiab cov hluav taws xob. Kev tswj hwm hom tam sim no tau siv dav vim nws cov lus teb zoo li cov lus teb nrawm, loj nce bandwidth, qhov kev tso zis me me, thiab yooj yim kev sib koom yooj yim. Kev tswj hwm hom tam sim no tau muab faib ua lub ncov tam sim no tswj thiab nruab nrab tswj tam sim no. Qhov zoo ntawm lub ncov tam sim no yog: 1) hloov pauv ceev {{8} Cov lus teb Vib, thiab cov lus teb ceev ceev rau kev hloov pauv ntawm voltage thiab cov zis load; 2) Lub voj tswj tau yooj yim rau kev tsim qauv; 3) muaj ib qho yooj yim tsis siv neeg sib nqus kev sib tw; 4) Muaj instantaneous ncov no txwv kev ua haujlwm, thiab lwm yam txawm li cas los xij, Peak Inductor tam sim no tuaj yeem ua rau Subharmonic oscillations hauv lub system. Txawm hais tias muaj ntau cov ntaub ntawv tau qhia txog qhov no rau qee qhov, lawv tsis tau kawm txog kev kawm dab tsi, tshwj xeeb tshaj yog lawv cov laj thawj kev siv. Kab lus no yuav ua txoj kev kawm ua haujlwm hauv Subharmonic oscillations.
Ua rau 1st harconic oscillation
Noj lub PWM kev hloov kho lub ncov tam sim no hom hloov pauv cov qauv kev tsim kho (raws li cov kab sloormonic oscillation yog tshuaj ntsuam nyob rau hauv kev nthuav dav los ntawm cov kev xav sib txawv.
Rau lub voj sab hauv lub voj sab hauv, Daim Duab 2 qhia txog kev sib txawv ntawm inductor tam sim no thaum lub inductor tam sim no nyob rau hauv undergoes undergoes ib kauj ruam me me △ 厶. Cov kab ruaj khov sawv cev rau cov ntu tam sim no thaum lub cev ua haujlwm qub, thiab cov kab Dashion sawv cev rau qhov chaw ua hauj lwm tiag tiag. Nws tuaj yeem pom tias: 1) Qhov yuam kev tam sim no nyob rau hauv lub voj voog no tom ntej no, qhia tias lub cim kev ua yuam kev yav dhau los oscillates thiab divaces, thiab lub system tsis ruaj khov; 2) Lub sijhawm Oscillation yog ob zaug hloov lub sijhawm, uas txhais tau tias lub sijhawm oscillation yog ib nrab ntawm cov chaw hloov. Nov yog keeb kwm ntawm lub npe subharmonic oscillation. Daim duab 3 qhia qhov sib txawv ntawm inductor tam sim no thaum lub system systemment lub voj voog yog ntau dua 50% thiab muaj cov kauj ruam me me nyob hauv lub luag haujlwm voj voog. Nws tuaj yeem pom tau tias lub kaw lus tseem ua pov thawj Subharmonic oscillation. Thaum cov haujlwm lub voj voog yog tsawg dua 50%, txawm hais tias muaj kev ntxhov siab hauv lub cim tam sim no, cov oscillation no tseem tuaj yeem ua rau lwj qhov twg los xij oscillation. Lub system yog ruaj khov.
