Taw qhia rau lub hauv paus ntsiab lus ntawm High Frequency Switching Power Supply
Lub ntsiab Circuit Court
Tag nrho cov txheej txheem ntawm AC grid input thiab DC tso zis muaj xws li: 1. Input filter: nws txoj haujlwm yog lim cov clutter uas twb muaj lawm nyob rau hauv daim phiaj, thiab tib lub sij hawm tiv thaiv cov clutter generated los ntawm lub tshuab los ntawm kev pub rov qab mus rau pej xeem daim phiaj. 2. Rectification thiab filtering: daim phiaj AC yog ncaj qha rectified mus rau ib tug smoother DC rau theem tom ntej ntawm transformation. 3. Inversion: Hloov cov rectified direct tam sim no mus rau high-frequency alternating tam sim no, uas yog ib feem ntawm high zaus. Qhov ntau zaus, qhov me me ntawm qhov ntim, qhov hnyav thiab qhov tso zis zog. 4. Tso zis rectification thiab filtering: Raws li load yuav tsum, muab ruaj khov thiab txhim khu kev qha DC fais fab mov.
Tswj Circuit Court
Ntawm qhov tod tes, cov qauv raug coj los ntawm qhov tso zis davhlau ya nyob twg, piv nrog cov txheej txheem teeb tsa, thiab tom qab ntawd lub inverter yog tswj los hloov nws cov zaus lossis mem tes dav kom ua tiav cov khoom ruaj khov; ntawm qhov tod tes, raws li cov ntaub ntawv muab los ntawm qhov ntsuas hluav taws xob, nws tau txheeb xyuas los ntawm kev tiv thaiv Circuit Court Circuit Court ua ntau yam kev tiv thaiv kev ntsuas ntawm tag nrho lub tshuab.
kuaj xyuas Circuit Court
Ntxiv nrog rau kev muab ntau yam tsis sib xws hauv kev tiv thaiv Circuit Court hauv kev ua haujlwm, nws kuj tseem muab ntau yam kev ntsuas ntsuas cov ntaub ntawv.
Pab txhawb zog
Muab lub zog rau cov kev xav tau sib txawv ntawm txhua lub voj voog ib leeg. Lub hauv paus ntsiab lus ntawm kev tswj kev tswj thiab qhov hluav taws xob stabilization Qhov hloov K yog rov qhib thiab tawm ntawm ib lub sijhawm luv luv. Thaum lub hloov K yog qhib, lub hwj chim input E yog nkag mus rau lub load RL los ntawm qhov hloov K thiab lim circuit. Thaum lub sijhawm hloov pauv tag nrho, lub zog E Muab lub zog rau lub nra; Thaum lub qhov hluav taws xob K raug muab tua, cov khoom siv hluav taws xob nkag E cuam tshuam cov khoom siv hluav taws xob. Nws tuaj yeem pom tau tias lub zog muab los ntawm cov khoom siv hluav taws xob nkag mus rau cov khoom thauj yog cuam tshuam. Txhawm rau muab lub zog txuas ntxiv mus rau qhov thauj khoom, kev hloov pauv kev tswj hwm lub zog yuav tsum muaj cov khoom siv hluav taws xob cia. Thaum lub qhov hluav taws xob qhib, ib feem ntawm lub zog yog khaws cia. Tso rau lub load thaum disconnected. Nyob rau hauv daim duab, lub Circuit Court muaj li ntawm inductor L, capacitor C2 thiab diode D muaj cov haujlwm no. Lub inductance L yog siv los khaws lub zog. Thaum lub tshuab hluav taws xob raug kaw, lub zog khaws cia hauv inductance L raug tso tawm mus rau lub load los ntawm diode D, kom lub load tuaj yeem tau txais lub zog tas li thiab ruaj khov. Vim tias lub diode D ua rau cov load tam sim no tsis tu ncua, nws yog hu ua freewheeling. diode. Qhov nruab nrab qhov hluav taws xob EAB ntawm AB tuaj yeem qhia tau los ntawm cov qauv hauv qab no: EAB=TON / T * E Hauv cov qauv, TON yog lub sijhawm thaum hloov pauv txhua lub sijhawm, thiab T yog lub luag haujlwm ntawm lub voj voog. hloov rau thiab tawm (uas yog, qhov hloov ntawm lub sijhawm TON thiab tawm ntawm lub sijhawm TOFF).
Nws tuaj yeem pom los ntawm cov qauv uas qhov nruab nrab tus nqi ntawm qhov hluav taws xob ntawm A thiab B kuj tseem yuav hloov pauv los ntawm kev hloov qhov sib piv ntawm lub sijhawm ntawm kev hloov mus rau lub voj voog ua haujlwm. Yog li ntawd, cia li kho qhov sib piv ntawm TON thiab T nrog kev hloov pauv ntawm cov khoom thauj thiab cov khoom siv hluav taws xob hluav taws xob tuaj yeem ua rau cov zis voltage V0 nyob twj ywm tib yam. Hloov lub sij hawm TON thiab qhov piv ntawm lub luag hauj lwm voj voog txhais tau tias hloov lub luag hauj lwm voj voog ntawm lub mem tes. Txoj kev no hu ua "Time Ratio Control" (TimeRatioControl, abbreviated li TRC).
