Nws muaj xws li lub ntsiab Circuit Court, tswj Circuit Court thiab kuaj xyuas Circuit Court. Lub ntsiab Circuit Court yog tsim los ntawm peb qhov chaw: qhov sib npaug, ntu ntu thiab lim lub zog cia capacitor Cd ntawm DC ib feem. Qhov sib npaug yog tsim los ntawm cov lim dej qis thiab peb-theem PWM hloov rectifier. Lub switching rectifier yog qhov tseeb peb-theem voltage inverter. Nws lub luag haujlwm tseem ceeb yog muab lub zog DC rectified rau ib-theem them nyiaj inverter nyob rau hauv series. Khaws qhov voltage ntawm DC capacitor Cd tas li. DC capacitor Cd plays lub luag haujlwm ntawm kev lim dej thiab lub zog cia. Muaj ob lub hom phiaj ntawm kev siv peb-theem hloov rectifier. Ib qho yog kom lub mains input power factor cosφ=1, thiab ua kom cov input tam sim no waveform ze rau sinusoidal, thiaj li yuav txo tau cov pa phem rau lub mains; Lub zog reactive nyob rau hauv lub inverter load yuav muab rov qab mus rau lub mains fais fab mov, kev txhim kho cov efficiency ntawm lub compensator. Tsis tas li ntawd, yog tias lub zog cia roj teeb txuas nrog rau qhov sib npaug nrog DC capacitor Cd, thaum lub ntsiab tsis ua haujlwm, peb-theem PWM hloov hloov rectifier hloov mus rau lub xeev inverter ua haujlwm, thiab tuaj yeem siv ua UPS online rau lub sijhawm luv luv. . Yog hais tias ib feem ntawm cov tswj Circuit Court raug ntxiv, peb-theem voltage inverter yuav siv tau raws li ib tug reactive zog compensator los yog ib tug nquag lim lim tawm cov harmonics nyob rau hauv lub load tam sim no. Lub series yog tsim los ntawm peb-theem ib-theem tag nrho-bridge inverters thiab lawv cov tso zis transformers (uas yog, them nyiaj transformers), uas nws muaj nuj nqi yog los them rau qhov siab thiab qis hloov ntawm mains voltage, peb-theem asymmetry, harmonics, flicker. , lwm.; Muaj ob qhov laj thawj yog vim li cas qhov series siv peb-theem ib-theem inverters thiab tso zis transformers. Nws tseem yog asymmetrical thiab yuav tsum tau them nyiaj rau ntawm nws tus kheej nrog tsis txuas ib-theem inverters. Qhov thib ob, nws kuj tuaj yeem txhim kho kev ntseeg tau ntawm peb-theem plaub-hlau fais fab mov. Nyob rau hauv rooj plaub uas ib theem tsis ua hauj lwm, ob theem ntxiv tuaj yeem muab hluav taws xob txuas ntxiv. Peb ib-theem inverters tuaj yeem ua haujlwm hauv ob qho tib si. Thaum lub mains voltage peb sib npaug rau lub nominal reference voltage, peb ib-theem inverters yog hloov los ntawm cov nyiaj them lub xeev ntawm lub inverter mus rau lub switching rectification xeev mus rau lub DC capacitor Cd los yog lub roj teeb muab lub hwj chim los xyuas kom meej cov hauj lwm zoo ntawm lub Peb-theem voltage inverter nyob rau hauv parallel Circuit Court. Nyob rau hauv txoj kev no, peb-theem AC tswj fais fab mov dhau los ua tus neeg siv hluav taws xob sib xyaw ua ke
