Taw qhia rau inverter hloov hluav taws xob khoom siv rau kev kho cov inverters
Cov tub rog thiab nees tsis tau tsiv, zaub mov thiab zaub mov ua ntej. Hloov fais fab mov Circuit Court los muab lub tshuab inverter tswj lub zog, yog qhov yuav tsum tau ua ua ntej rau kev ua haujlwm ntawm lub inverter. Lub zog hloov hluav taws xob siv hluav taws xob siv nyob rau hauv lub zaus hloov pauv yog qhov ncaj qha-analogue inverter Circuit Court, uas yog ib hom hluav taws xob thiab lub zog hloov hluav taws xob, thiab hloov DC voltage thiab lub zog rau hauv lub zog hluav taws xob, thiab tom qab ntawd kho nws los ua lwm yam DC voltage. Lub input thiab output voltages yog cais los ntawm ib leeg los ntawm ib tug switching transformer, uas plays lub luag hauj lwm ntawm lub hwj chim hloov thiab voltage / tam sim no conversion. Lub tshuab hluav taws xob hloov pauv yog ib kauj ruam-down transformer. Cov yam ntxwv ntawm switching fais fab mov yog raws li nram no:
1) Lub oscillation thiab voltage kev tswj ntawm switching fais fab mov yog siv cov kev hloov ntawm mem tes dav los yog lub sij hawm los kho qhov tso zis voltage, hu ua lub sij hawm-proportional tswj, uas kuj muab faib ua ob hom kev tswj: PWM (dav-modulation) thiab PFM (ntau zaus-modulation).
2) Los ntawm lub zog hloov pauv yam ntxwv ntawm lub voj voog, tuaj yeem muab faib ua ob hom kev ua haujlwm rau pem hauv ntej thiab flyback. Thaum lub raj hloov pauv yog saturated, lub rectifier txuas nrog rau lub voj voog thib ob yog txiav tawm los ntawm qhov rov qab tsis zoo voltage, thiab thawj winding ntawm lub transformer hloov ntws mus rau hauv tam sim no thiab khaws lub zog (electromagnetic conversion). Thaum lub raj hloov hluav taws xob raug txiav tawm, qhov thib ob winding tso tawm hluav taws xob hluav taws xob los ntawm kev thauj khoom Circuit Court (magneto-electric conversion). Forward hom yog qhov ntxeev ntawm qhov no, tsis muaj ntau yam kev siv.
3) Los ntawm cov qauv hluav taws xob tseem ceeb ntawm kev hloov pauv hloov pauv, muaj cov khoom sib cais thiab kev sib xyaw oscillator nti ua los ntawm ob daim ntawv Circuit Court. Yog li, los ntawm lub hauv paus ntawm lub oscillation teeb liab, thiab muab faib mus rau hauv nws tus kheej excited (discrete qhov chaw) thiab lwm yam excitation (IC Circuit Court) switching fais fab mov. Ob qho tib si circuits muaj kev siv.
4) Hloov lub raj muaj kev siv cov khoom siv bipolar thiab kev siv cov nyhuv transistors.
5) me me fais fab inverter siv ib-kawg zoo excitation Circuit Court, loj thiab nruab nrab zog inverter feem ntau siv ob-kawg zoo excitation Circuit Court. General inverter switching fais fab mov, feem ntau muab cov nram qab no cov zis voltage: CPU thiab ancillary circuits, tswj circuits, lag luam zaub vaj huam sib luag +5V fais fab mov; tam sim no, voltage, kub thiab lwm yam txhaum cai Circuit Court, tswj circuits, ± 15V fais fab mov; tswj terminals, ua hauj lwm ntawm relay coil 24V fais fab mov. Plaub qhov kev sib cais ntawm 22V tsav lub zog hluav taws xob, plaub lub zog hluav taws xob feem ntau ua tiav los ntawm qhov hluav taws xob tswj hluav taws xob rau hauv +15V, -7.5V qhov zoo thiab qhov tsis zoo rau lub zog tsav, rau IGBT inverter tso zis Circuit Court muab excitation tam sim no.
Txhua yam khoom siv hluav taws xob, qhov tsis ua haujlwm ntawm lub zog hluav taws xob Circuit Court yog ib txwm siab heev vim tias nws yuav tsum muab lub zog ntawm lub tshuab, lub nra hnyav tshaj plaws. Inverter switching fais fab mov Circuit Court, daim ntawv no kuj ib leeg, cov qauv yog kuj yooj yim. Tab sis cov kab hluav taws xob yooj yim kuj tseem yuav ua rau muaj qhov tsis zoo. Kev hloov hluav taws xob tswj xyuas tsis yog qhov xav tau zoo li cov khoom siv hluav taws xob tawm, ib qho me me ntawm lub voj voog ib qho oscillation, kev tswj hluav taws xob, kev tiv thaiv, kev thauj khoom thiab lwm yam tsis xws luag, yuav ua rau lub Circuit Court muaj ntau yam kev txhaum.
Tsis muaj cov tshuaj tiv thaiv tom qab lub hwj chim rau, tsis muaj cov zaub ntawm lub lag luam tso saib vaj huam sib luag, lub inverter zoo li tsis tau siv rau. Ntsuas qhov kev tswj qhov hluav taws xob ntawm lub davhlau ya nyob twg tswj thiab 10V zaus hloov qhov voltage yog 0, ntsuas qhov ntsuas qhov ntsuas lub ntsiab ntawm lub davhlau ya nyob twg yog qhov qub, ces feem ntau tuaj yeem txiav txim siab tias qhov teeb meem yog nyob rau hauv lub zog hloov hluav taws xob.
