Nrog rau qhov ua rau muaj kev kub ntxhov ntawm lub zog, kev siv nyiaj txiag thiab kev ua pa phem, Tuam Tshoj tau tsim lub zog tshiab los ua kev lag luam tawm tswv yim.Raws li ib feem tseem ceeb ntawm hluav taws xob tsheb, tsheb chargers muaj ob qho tib si theoretical kev tshawb fawb tus nqi thiab tseem ceeb engineering daim ntawv thov nqi.FIG.1 qhia cov qauv thaiv daim duab ntawm lub tsheb charger nrog kev sib txuas ntawm pem hauv ntej STAGE AC / DC thiab nram qab theem DC / DC.
Thaum lub tsheb charger txuas nrog rau daim phiaj hluav taws xob, nws yuav tsim qee yam kev sib haum xeeb, ua paug rau daim phiaj hluav taws xob, thiab cuam tshuam rau kev ruaj ntseg ntawm cov khoom siv hluav taws xob.Txhawm rau txwv cov kev sib haum xeeb, International Electrotechnical Commission tau tsim cov qauv kev txwv kev sib haum xeeb iec61000-3-2 rau cov khoom siv hluav taws xob, thiab Tuam Tshoj kuj tau tshaj tawm NATIONAL tus qauv GB / T17625.Txhawm rau ua raws li cov qauv saum toj no, cov khoom siv hluav taws xob hauv lub nkoj yuav tsum tau kho lub zog hloov pauv (PFC).PFC AC / DC converter muab lub zog rau lub nraub qaum DC / DC system ntawm ib sab, thiab pab txhawb lub zog ntawm qhov tod tes.Kev tsim ntawm PFC AC / DC converter ncaj qha cuam tshuam rau kev ua haujlwm ntawm lub tsheb charger.
Raws li qhov ntim thiab kev sib haum xeeb ntawm cov khoom siv hluav taws xob hluav taws xob ntshiab muaj qhov xav tau hnyav, qhov kev tsim no siv lub zog hloov kho (APFC) thev naus laus zis.APFC muaj ntau yam topologies.Boost topology muaj qhov zoo ntawm qhov yooj yim tsav Circuit Court, siab PF tus nqi thiab tshwj xeeb tswj nti, yog li lub ntsiab Circuit Court ntawm Boost topology raug xaiv.Xav txog ntau yam kev tswj hwm yooj yim, qhov nruab nrab tam sim no tswj txoj kev nrog qhov zoo ntawm qhov tsis sib haum xeeb tsis sib haum xeeb, tsis muaj suab nrov thiab qhov hloov pauv hloov zaus raug xaiv.
Kab lus no nyob rau hauv kev saib ntawm lub hwj chim ntawm 2 kW tag nrho cov-hluav taws xob tsheb charger, xav txog cov harmonic cov ntsiab lus, ntim thiab tiv thaiv kev ua tau zoo tsim yuav tsum tau, cov kev tshawb fawb tseem ceeb PFC AC / DC converter, muaj lub ntsiab Circuit Court thiab tswj Circuit Court tsim, thiab nyob rau hauv lub hauv paus ntawm txoj kev tshawb no, nyob rau hauv txoj kev tshawb no ntawm lub system simulation thiab kev sim sim ua pov thawj
2 PFC AC / DC converter lub ntsiab Circuit Court tsim
Lub ntsiab Circuit Court ntawm PFC AC / DC converter yog tsim los ntawm cov zis lim capacitor, switching device, boost inductor thiab lwm yam khoom, thiab nws tsis yog tsim raws li nram no.
2.1 Tso zis lim capacitance
Cov zis lim capacitor tuaj yeem lim tawm cov zis voltage ripple tshwm sim los ntawm kev hloov pauv thiab tswj cov zis hluav taws xob hauv qee qhov ntau.Cov cuab yeej xaiv yuav tsum paub zoo dua ob txoj haujlwm saum toj no.
Lub voj voog tswj tau txais cov qauv kaw ob npaug: lub voj sab nraud yog lub voj voog hluav taws xob thiab lub voj sab hauv yog lub voj tam sim no.Lub voj tam sim no tswj cov tswv yim tam sim no ntawm lub ntsiab Circuit Court thiab taug qab cov ntaub ntawv siv tam sim no kom ua tiav qhov kev hloov kho lub zog.Cov zis hluav taws xob ntawm lub voj voog hluav taws xob thiab cov khoom siv siv hluav taws xob tau muab piv los ntawm qhov ua yuam kev voltage amplifier.Lub teeb liab tso zis, qhov hluav taws xob feedforward thiab qhov hluav taws xob input yog xam los ntawm tus multiplier kom tau txais cov ntaub ntawv siv tam sim no ntawm lub voj tam sim no.Los ntawm kev kho lub voj tam sim no, lub teeb liab tsav tsheb ntawm lub ntsiab Circuit Court hloov raj yog tsim kom ua tiav lub zog kho qhov system thiab tso tawm qhov ruaj khov DC voltage.Lub multiplier feem ntau yog siv rau cov teeb liab sib npaug.Ntawm no, daim ntawv no tsom rau kev tsim ntawm lub voj voog voltage thiab lub voj tam sim no.
Post lub sij hawm: Jun-20-2022