Basic Composition ntawm High -Power Switching Power Supplies
1. AC fais fab input yog rectified thiab lim rau DC;
2. Los ntawm kev siv lub siab - zaus PWM (mem tes dav modulation) cov cim los tswj lub transistor hloov, DC yog siv rau lub hauv paus ntawm kev hloov pauv hloov;
3. Qhov thib ob induction ntawm lub switching transformer generates siab - zaus voltage, uas yog rectified thiab lim los muab lub load;
4. Cov khoom tso tawm yog pub rov qab mus rau qhov kev tswj xyuas los ntawm ib lub voj voog los tswj PWM lub luag haujlwm, thiaj li ua tiav cov zis ruaj khov.
5. Thaum nkag mus rau AC lub zog, feem ntau yuav tsum dhau los ntawm ib yam dab tsi zoo li lub voj voog eddy tam sim no los lim tawm kev cuam tshuam ntawm daim phiaj hluav taws xob, nrog rau lim tawm kev cuam tshuam los ntawm lub zog ntawm daim phiaj;
6. Thaum lub hwj chim zoo ib yam, qhov siab dua qhov hloov zaus, qhov ntim me me ntawm cov hloov pauv hloov, tab sis qhov siab dua qhov yuav tsum tau ua rau lub raj hloov;
7. Qhov thib ob ntawm kev hloov pauv hloov pauv tuaj yeem muaj ntau yam windings lossis ib qho winding tuaj yeem muaj ntau yam kais dej kom tau txais cov khoom tsim tawm;
8. Feem ntau, qee qhov kev tiv thaiv hluav taws xob yuav tsum tau ntxiv, xws li tsis muaj - thauj khoom thiab kev tiv thaiv luv luv, txwv tsis pub nws yuav hlawv hluav taws xob hloov hluav taws xob.
Cov khoom tseem ceeb ntawm siab - fais fab hloov fais fab mov
Lub siab- fais fab mov muaj plaub yam tseem ceeb: lub ntsiab fais fab Circuit Court, PWM tswj Circuit Court, microcontroller tswj Circuit Court, thiab auxiliary fais fab mov.
Main zog Circuit Court
Impulse tam sim no limiting: Txwv cov impulse tam sim no ntawm sab input thaum lub hwj chim qhib. Input filter: Nws txoj haujlwm yog lim tawm cov clutter uas muaj nyob rau hauv daim phiaj fais fab thiab cuam tshuam cov lus tawm tswv yim ntawm cov clutter tsim los ntawm lub tshuab rov qab rau hauv daim phiaj fais fab.
Rectification thiab filtering: ncaj qha kho qhov AC fais fab mov ntawm daim phiaj hluav taws xob rau hauv lub zog DC smoother.
Inverter: Hloov kho DC lub zog rau hauv siab - zaus AC lub zog, uas yog qhov tseem ceeb ntawm siab - zaus hloov hluav taws xob.
Output rectification thiab filtering: Muab ruaj khov thiab txhim khu kev qha DC fais fab mov raws li qhov yuav tsum tau ua.
