Tej yam koj yuav tsum paub txog braking resistors

Tej yam koj yuav tsum paub txog braking resistors

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Braking resistortsim, cov tub ntxhais yog coj mus rau hauv tus account lub capacitor thiab IGBT module voltage teeb meem, kom tsis txhob muaj ob yam khoom tseem ceeb los ntawm lub high voltage ntawm lub tsheb npav ntxuav tawm, ob hom ntawm cov khoom no yog qhov phem, lub inverter yuav ua tsis tau zoo.

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Ntxiv nrog rau qhov loj load deceleration zaus yuav tsum tau nce lubbraking resistorthiab braking unit kom ceev braking, qhov tseeb, yog hais tias nyob rau hauv txoj kab nrog lub hnyav, lub sij hawm pib-up yuav tsum tau ceev heev zoo, kuj yuav tsum tau nres chav tsev thiab braking resistor pib nrog, yav dhau los, kuv sim siv lub inverter. tsav lub tshuab xuas nrig ntaus tshwj xeeb, qhov yuav tsum tau ua ntawm lub sijhawm nrawm ntawm lub inverter yog tsim los ntawm 0.1 vib nas this, thaum pib tag nrho, txawm hais tias lub load tsis hnyav, tab sis vim tias lub sijhawm nrawm dhau, lub tsheb npav voltage hloov pauv. tseem yuav overvoltage lossis overcurrent xwm txheej.Tab sis vim hais tias lub sij hawm acceleration yog luv luv, lub tsheb npav voltage fluctuation muaj zog heev, yuav muaj tshaj-voltage los yog dhau-tam sim no, thiab ces nce lub sab nraud braking unit thiab braking resistor, lub inverter yuav ua hauj lwm ib txwm.

2024.1.02 (1)

Ntsuam xyuas, vim tias lub sijhawm pib luv luv, lub tsheb npav capacitor voltage tam sim ntawd emptied, thiab lub rectifier instantly muaj ib tug loj tam sim no them nyob rau hauv, ua rau lub tsheb npav voltage dheev siab, yog li lub tsheb npav voltage fluctuation muaj zog heev, instantly tej zaum yuav ntau tshaj 700. volts, ua ke nrog covbraking resistor, koj tuaj yeem tshem tawm qhov kev hloov pauv ntawm kev kub siab hauv lub sijhawm, kom lub zaus hloov pauv ua haujlwm hauv lub xeev ib txwm muaj.