Dav siv nyob rau hauv cov ntawv thov kev lag luam, DC hloov hluav taws xob khoom siv
Cov kev qhia ntawm DC fais fab mov muab faib ua ob hom: ib qho yog cov yam ntxwv ntsuas, suav nrog kev tso cai nkag voltage, tso zis voltage, tso zis tam sim no, thiab cov zis voltage tswj ntau yam, thiab lwm yam; Lwm hom yog qhov ntsuas tau zoo, uas yog siv los ntsuas qhov kev ruaj ntseg ntawm qhov tso zis DC voltage, suav nrog qhov ntsuas hluav taws xob ruaj khov (lossis qhov ntsuas hluav taws xob), qhov tso tawm tsis kam (lossis cov kev cai tam sim no), thiab ripple voltage (ib puag ncig thiab random drift).
Tsim ntawm Main Circuit rau DC Switching Power Supply
Lub ntsiab Circuit Court ntawm DC hloov hluav taws xob yog siv los ua kom tiav kev hloov pauv ntawm DC-AC-DC. Lub kaw lus tseem ceeb hauv Circuit Court txais ib tus choj tag nrho DC-DC converter, raws li qhia hauv daim duab 2. Lub zog hloov hluav taws xob siv hauv qhov system no yog IGBT module ntawm BSM 50GB120DN2 series, txhua qhov module yog ib nrab choj qauv, yog li ob lub modules yuav tsum muaj nyob rau hauv tag nrho choj system. Txhua module yog embedded nrog ceev ceev freewheeling diode.
DC hloov khoom siv hluav taws xob tau siv dav hauv ntau qhov chaw lag luam. Hauv kev tsim khoom lag luam (xws li vuam, electroplating, lossis kev tswj ceev ntawm DC motors), yuav tsum muaj cov khoom siv hluav taws xob ntau ntawm cov khoom siv hluav taws xob, thiab lawv feem ntau xav tau cov khoom siv hluav taws xob DC uas tuaj yeem kho cov zis hluav taws xob tau yooj yim. Tam sim no, vim qhov zoo ntawm kev ua haujlwm siab thiab kev hloov pauv ntawm cov khoom siv hluav taws xob me me, cov khoom siv hluav taws xob ib txwm muaj thiab thyristor stabilized fais fab mov tau maj mam hloov los ntawm DC hloov cov khoom siv hluav taws xob ruaj khov. Txoj kev tswj lub ntsiab ntawm kev hloov hluav taws xob hloov hluav taws xob yog siv mem tes dav kev hloov pauv kev sib xyaw ua ke rau kev tso tawm PWM pulses, thiab siv analog PID regulator rau pulse width modulation. Txoj kev tswj hwm no muaj qee yam tsis raug thiab lub Circuit Court yog qhov nyuaj.
txoj cai ua haujlwm
DC switching fais fab mov muaj xws li ib qho input, ib qho kev hloov hluav taws xob, ib qhov tso zis, thiab ib feem tswj. Lub zog hloov dua siab tshiab yog qhov tseem ceeb ntawm kev hloov hluav taws xob hloov hluav taws xob, uas ua rau lub zog ntau zaus ntawm DC tsis ruaj khov thiab ua tiav qhov yuav tsum tau hloov dua siab tshiab rau cov zis. Nws yog tsuas yog tsim los ntawm kev hloov pauv transistor thiab high-frequency transformer. Daim duab 1 qhia txog schematic thiab sib npaug schematic daim duab ntawm DC switching fais fab mov, uas muaj ib tug tag nrho yoj rectifier, ib tug switching tube V, ib tug excitation teeb liab, ib tug freewheeling diode Vp, lub zog cia inductor, thiab ib tug filtering capacitor C. Qhov tseeb, qhov tseem ceeb ntawm DC hloov hluav taws xob yog DC transformer.
