Tom qab ze li ntawm 10 xyoo ntawm txoj kev loj hlob, tshiab lub zog hluav taws xob tsheb tau tsim ib co technological accumulated. Muaj kev paub ntau hauv kev tsim cov khoom siv hluav taws xob hauv tsheb thiab kev xaiv thiab kev sib txuam ntawm cov khoom. Ntawm lawv, tus tsim ntawm precharge resistor nyob rau hauv lub precharge Circuit Court yuav tsum tau xav txog ntau yam kev mob thiab kev ua hauj lwm tej yam kev mob. Kev xaiv ntawm precharge resistor txiav txim siab ceev ntawm lub tsheb lub sij hawm precharge, qhov luaj li cas ntawm qhov chaw nyob ntawm lubprecharge resistor, thiab kev nyab xeeb, kev cia siab, thiab kev ruaj ntseg ntawm lub tsheb cov hluav taws xob high-voltage.
Lub precharge resistor yog ib tug resistor uas maj mam tsub lub capacitor nyob rau hauv thaum ntxov theem ntawm high-voltage zog-up ntawm lub tsheb. Yog hais tias tsis muaj precharge resistor, overcharge tam sim no yuav tawg lub capacitor. High-voltage hluav taws xob yog siv ncaj qha mus rau lub capacitor, uas yog sib npaug rau ib qho luv luv Circuit Court. Qhov luv luv-circuit tam sim no ntau dhau yuav ua rau cov khoom siv hluav taws xob muaj hluav taws xob puas tsuaj.Yog li ntawd, lub precharge resistor yuav tsum raug coj mus rau hauv tus account thaum tsim lub Circuit Court kom muaj kev ruaj ntseg ntawm Circuit Court.
Muaj ob qhov chawprecharge resistorsyog siv nyob rau hauv nruab nrab thiab high voltage circuits ntawm hluav taws xob tsheb, uas yog lub cev muaj zog controller precharge circuit thiab high voltage accessory precharge circuit. Muaj ib tug loj capacitor nyob rau hauv lub motor controller (inverter circuit), uas yuav tsum tau precharged los tswj lub capacitor them tam sim no. High-voltage accessories feem ntau muaj xws li DCDC (DC converter), OBC (on-board charger), PDU (high-voltage fais fab faib lub thawv), roj twj, twj tso kua mis, AC (cua txias compressor) thiab lwm yam khoom, thiab tseem muaj. loj capacitors nyob rau hauv cov khoom. , yog li yuav tsum tau precharge.
Precharge resistorsR, precharge lub sij hawm T, thiab yuav tsum tau precharge capacitor C, lub sij hawm precharge feem ntau yog 3 mus rau 5 zaug RC, thiab lub sij hawm precharge feem ntau yog milliseconds. Yog li ntawd, precharging tuaj yeem ua tiav sai sai thiab yuav tsis cuam tshuam rau lub tsheb fais fab kev tswj lub tswv yim. Cov xwm txheej rau kev txiav txim siab seb puas ua tiav precharging yog tias nws nce mus txog 90% ntawm lub hwj chim roj teeb voltage (feem ntau yog qhov no). Thaum xaiv ib tug precharge resistor, cov nram qab no tej yam kev mob yuav tsum tau xav txog: lub hwj chim roj teeb voltage, contactor rated tam sim no, capacitor C tus nqi, siab tshaj plaws ambient kub, kub sawv ntawm lub resistor, voltage tom qab precharge, precharge lub sij hawm, rwb thaiv tsev tus nqi, mem tes zog. Cov mis laij lej rau lub zog mem tes yog ib nrab ntawm cov khoom ntawm cov square ntawm cov mem tes voltage thiab point capacitance C tus nqi. Yog hais tias nws yog ib tug tas mus li mem tes, ces tag nrho lub zog yuav tsum yog cov sum ntawm lub zog ntawm tag nrho cov pulses.
