Kuv ntseeg tias ntau lub tuam txhab inverter tau hnov qee qhov kev sib tw siab rau qee yam. Yav dhau los, qhov sib txawv-frequency drives (VFD) tau nrov heev. Yuav luag txhua lub tuam txhab tsim khoom lag luam xav tau ntau cov khoom lag luam, uas ua rau ntau lub tuam txhab muaj kev ntseeg siab tsis pom kev ntawm VFD cov khoom. Txawm li cas los xij, nrog kev xav tau thiab kev loj hlob ntawm tib neeg, ntau yam khoom uas hloov VFD kuj tau tshwm sim. Yog li VFD puas tuaj yeem ua raws li kev sib raug zoo ntawm kev loj hlob yav tom ntej?
Ua ntej tshaj plaws, kuv ntseeg tias VFD yuav tsis raug tshem tawm, tab sis qhov kev loj hlob ntawm kev loj hlob yog txo, qhov kev lag luam tshiab ntawm kev siv tau txo qis, thiab qee qhov ntawm lawv tau hloov los ntawm servo systems.
VFDs tshwj xeeb thiab dav dav yog siv rau HVAC cua sov, cov dej hauv nroog thiab cov kav dej, kiv cua, cov twj tso kua dej thiab ntau yam khoom siv hluav taws xob ntau lawm.
Cov koob ntawm VFDs tsim nyob rau hauv tsev thiab txawv teb chaws muaj programmable functions, tom qab software saib xyuas, thiab kev sib txuas lus lub tsheb thauj mus los, nrog nplua nuj thiab muaj zog ua ke ua haujlwm thiab kev ua haujlwm ruaj khov.
Nws muaj zog adaptability rau hnyav ib puag ncig thiab yog haum rau lub sij hawm uas siab stability. Piv txwv li, qhov chaw uas yuav tsum tau tswj vector. Saib daim duab hauv qab no.
Txij li thaum xyoo 1970s, VFD thev naus laus zis tau tsim kho sai nrog kev txhim kho ntawm cov khoom siv semiconductor tshiab (high-power rectifier modules thiab IGBT field effect tubes, thiab lwm yam) thiab qhov tshwm sim ntawm cov microprocessors siab heev.
Rau cov tsav tsheb uas tsis muaj zog thiab cov cuab yeej ua haujlwm siab, txawm hais tias servo motors tam sim no siv los tsav thiab tswj cov cuab yeej siv tshuab. Txawm li cas los xij, rau lub zog nruab nrab-voltage (6000V, lub zog ntawm 800 ~ 1000KW) / high-voltage (10KV, lub zog ntawm 400 ~ 800KW) lub cev muaj zog, servo motors thiab controllers tsis muaj kev pab thiab daunting.
Raws li rau VFD los yog servo tsav ntawm lub cev muaj zog uas tsav cov neeg kho tshuab load, txhua tus muaj nws tus kheej zoo. Nws tsis tuaj yeem hais tias leej twg yog tus zoo lossis phem. Vim qhov kev paub hauv nws yog qhov tob heev. Yog tias koj xav ua si nrog VFD, koj tsis tas yuav paub txhua yam vim koj paub me ntsis plaub.
Ntxiv mus, qee qhov kev tswj tau yooj yim tsis tas yuav muaj qhov siab kawg nkaus, yog li vim li cas ho tsis xaiv VFD tswj?
VFD yuav ua li cas thiaj li tswj lub thawv ntawm cov tshuab luam ntawv uas yuav tsum tau muaj kab ceev thiab qhov nro tsis tu ncua? Cov khoom siv tshuab luam ntawv zoo li no muaj txheej txheej txheej txheem los ntawm unwinding thaum pib, luam ntawv hauv nruab nrab mus rau rewinding thaum kawg. Txoj kev nyuaj yog qhov tseeb ntawm tus kheej. Lub unwinding kab ceev yog qeeb, rewinding kab ceev yog ceev, thiab qhov nro tsis tu ncua yog koom nrog hauv nruab nrab. Tag nrho cov no tuaj yeem siv VFD los tawm tswv yim tawm tswv yim los ntawm ntau lub sensors thiab ua kom raug suav kom ua tiav cov haujlwm synchronous ntawm ntau lub cev muaj zog.
Kev sib tw, los ntawm kev ua lag luam ntawm cov tuam txhab saum toj no, peb tuaj yeem pom tias lawv txhua tus ua haujlwm hnyav ntawm servo system
VFD nws tus kheej muaj kev txwv. Yog hais tias nws yog nyob rau hauv cov nqe lus ntawm lub cev muaj zog tswj, VFD yog sib npaug rau ib tug maus taus, thiab lub servo system yog sib npaug rau lub tsheb.
Lub hauv paus ntsiab lus ntawm VFD yog qhov hloov pauv ntawm qhov zaus tam sim no kom ua tiav kev tswj lub cev muaj zog.
Lub tshuab cua txias sib txawv uas peb feem ntau hnov txog hauv peb lub neej yog lub tswv yim no. Raws li kev tawm tswv yim los ntawm lub sensor, qhov kub thiab txias hauv nroog yog siab. Lub sijhawm no, VFD tswj cov compressor tig nrawm, yog li lub zog tso zis loj thiab cov nyhuv txias yog tam sim ntawd.