Kev siv ntawmbrakeresistorsnyob rau hauv cov khoom siv crane yog qhov tseem ceeb rau kev nyab xeeb thiab ua haujlwm zoo ntawm cov tshuab. Txoj kev ua haujlwm ntawm cov khoom nqa nqa hauv crane yog: lub cev muaj zog ua haujlwm hauv lub zog tsim hluav taws xob thaum txav mus los, thiab lub cev muaj zog ua haujlwm thaum nce mus. Yog tias tsis muaj braking resistor ntxiv, hluav taws xob tsim los ntawm lub cev muaj zog yuav ncaj qha rau ntawm inverter module, ua rau muaj kev puas tsuaj rau lub module.
Thaum lub sij hawm lub cev muaj zog deceleration txheej txheem, cov khoom siv ntau dhau inertia yuavtiglub cev muaj zog rau hauv lub tshuab hluav taws xob, ua rau lub cev muaj zog muab lub zog rau lub inverter nyob rau hauv qhov kev taw qhia. Qhov no tuaj yeem ua rau lub tswb dhau-voltage hauv inverter. Yuav kom daws tau qhov teeb meem no, cov txheej txheem ntawm kev nce lub zog resistor (tsim kom txo tus nqi tsis kam) tuaj yeem siv los tso tawm ntau lub zog. Tsis tas li ntawd, qee qhov nres nres tuaj yeem muab rov qab fais fab mov rau lub voj voog fais fab, uas yog tshwj xeeb tshaj yog muaj txiaj ntsig zoo hauv cov tshuab zaus sib txawv nrog lub tsheb npav DC thiab pab txuag hluav taws xob.
Covbrakeresistorplays lub luag haujlwm tseem ceeb hauv kev tiv thaiv dhau-voltage ntawm qhov hloov pauv zaus thaum lub sij hawm deceleration, ua kom qhov kev ncua deb, thiab txhim kho tag nrho cov kev ua tau zoo ntawm cov khoom nqa nqa. Txawm hais tias lub hauv paus nres ntawm lub cev yog tsuas yog siv rau qhov kawg nres nres nres, nws tsis zoo rau deceleration braking. Qhov no yog qhov uas tiv thaiv braking los rau hauv kev ua si vim nws tsuas yog cuam tshuam rau lub cev muaj zog thaum lub sijhawm deceleration thiab tsis muaj txiaj ntsig thaum lub cev muaj zog nres. Yuav kom lub cev muaj zog nyob ruaj ruaj hauv qhov muaj peev xwm thauj khoom, yuav tsum siv lub nres.
Nyob rau hauv cov nqe lus ntawm hom nres resistors siv nyob rau hauv lifting khoom, aluminium case resistors thiab ripple resistors feem ntau yog siv los pib lub load. Cov braking resistors tseem tuaj yeem muab tso rau sab saum toj ntawm ib leeg, tab sis kev txiav txim siab tshwj xeeb yuav tsum tau muab rau kev nyab xeeb thiab txhim kho kom raug. Yog hais tias tus naj npawb ntawm cov resistors ntau tshaj 4, lawv yuav tsum tau muab tso rau ntawm ib tug tshwj xeeb hlau thav duab thaum tuav ib tug deb ntawm 80mm ntawm ib sab ntawm ob pawg ntawm resistors. Tsis tas li ntawd, lub tshav kub tiv thaiv tuaj yeem ntsia nruab nrab rau kev tiv thaiv ntxiv. Nws yog ib qho tsim nyog los xyuas kom meej tias cov ntsia hlau tau ruaj khov los tiv thaiv kev sib tsoo lossis hluav taws xob poob rau cov neeg ua haujlwm thaum lub sijhawm teeb tsa.
Hauv kev xaus, kev siv ntawm nres resistors nyob rau hauv cov khoom siv crane yog ib qho tseem ceeb los tswj lub zog tso tawm thaum lub sij hawm deceleration, tiv thaiv kev puas tsuaj rau lub zaus converter, thiab txhim kho tag nrho cov kev ua tau zoo thiab kev nyab xeeb. Kev txhim kho kom zoo thiab kev nkag siab ntawm kev ua haujlwm ntawm lub braking resistor yog qhov tseem ceeb rau kev ua haujlwm zoo ntawm crane machinery.
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