Lub hom phiaj ntawm overcurrent kev tiv thaiv nyob rau hauv inverter tsuas yog hais txog qhov muaj txiaj ntsig zoo tshaj plaws (txog 200% ntawm kev tiv thaiv dhau los ntawm zaus dhau los yog qhov tseem ceeb tshaj plaws yog qhov tseem ceeb.
Ua ntej, qhov ua rau ntawm overcurrent sib cav sib ceg ntawm inverter
Overcurrent Txhaum tau tuaj yeem faib ua kev nrawm, deceleration, tas li ua nrawm dua li qub overcurrent. Tej zaum nws yuav tshwm sim los ntawm kev nrawm thiab tshem tawm lub sijhawm hloov kho yog luv heev, cov khoom xa tawm yog qhov tsis xwm yeem, cov zis yog luv-circuited thiab lwm yam laj thawj. Nyob rau lub sijhawm no, feem ntau los ntawm kev ncua ntxiv ntawm lub sijhawm nrawm thiab tshem tawm cov kev hloov pauv sai sai, ntxiv rau lub zog faib khoom, khij cov kab thiab yog li daws cov teeb meem. Yog tias disconnecting lub zog hloov pauv hloov pauv lossis overcurrent Txhaum, cov inverter inverter Circuit Court tsis zoo, yuav tsum tau hloov cov zaus hloov pauv. Raws li cov ntaub ntawv inverter, koj tuaj yeem nrhiav cov laj thawj los ntawm cov hauv qab no:
(1) overcurrent nyob rau hauv kev ua haujlwm, piv txwv li, overcurrent nyob rau hauv lub cev tso tawm hauv cov txheej txheem ua haujlwm. Cov laj thawj yog kwv yees li nram qab no:
Ua ntej, lub cev muaj zog ua tau raws li qhov kev cuam tshuam thauj khoom lossis cov qauv ntawm lub cev muaj zog "Dag" tshwm sim rau lub cev muaj zog;
Thib ob, cov zis sab ntawm Inverter Luv luv, xws li cov zis mus rau lub cev luv luv-Circuit Court, thiab lub cev muaj zog los ntawm kev sib cuag, hauv av, thiab lwm yam)
Qhov thib peb, lub inverter nws tus kheej tsis ua haujlwm zoo, xws li inverter charge ntawm ob inverter pay hauv kev ua haujlwm tas li ntawm cov txheej txheem ua haujlwm yog txawv txav. Piv txwv li, qhov kub thiab kub dhau lawm, lossis cov cuab yeej siv tsis tau muaj nyob rau hauv lub nroog loj thiab qis dua ntawm cov "los ntawm lub sijhawm" dhau los ntawm cov "dhau los Qhov zoo thiab tsis zoo cov terminals ntawm DC voltage yog nyob rau hauv lub xeev luv luv.
(2) Dhau-tam sim no thaum lub sij hawm nrawm thiab nrawm-down: thaum lub sijhawm ua kom lub sijhawm hauv lub sijhawm loj, nws tseem yuav ua rau-tam sim no. Nyob rau hauv cov txheej txheem ntawm kev ceev, qhov kev hloov pauv hloov pauv sai heev, thiab tsis tuaj yeem khaws cia sai sai, qhov tshwm sim yog tias kev nrawm dhau lawm; Nyob rau hauv tus txheej txheem ntawm kev txo qis, lub sijhawm nrawm luv luv dhau, thiab lub cev muaj zog hloov nrawm nrawm, thiab tseem tswj hwm lub tshuab hluav taws xob sai sai, tab sis tseem ua rau lub tshuab hluav taws xob nrawm nrawm dhau los tsim cov khoom sib txawv. Loj dhau thiab tsim tau overcurrent.
Thib ob, qhov zaus hloov pauv hloov cov txheej txheem kev ua txhaum
(1) Thaum pib taug kev nrawm, qhov no yog qhov tshwm sim loj heev ntawm overcurrent, qhov cim tseem ceeb:
Kev ua haujlwm machinery tsis yog daig;
B Tsis muaj qhov luv luv ntawm lub zog ntawm lub nra, siv MoGohmermeter mus soj ntsuam seb puas muaj tsis muaj qhov chaw luv mus rau hauv av; Kuv tsis muaj kev puas tsuaj rau lub hwj chim module ntawm inverter;
C muaj zog pib lub zog yog me me dhau, lub qhov system tsis tuaj yeem tig.
(2) Yog tias lub cev muaj zog tsis tawm tsam tam sim ntawd thaum pib, tab sis kev mus ncig thaum ua haujlwm, feem ntau kos:
L Ramp-up lub sij hawm teeb yog luv heev, ntev ntev lub sijhawm nrawm; l Lub sij hawm txiav tawm lub sijhawm luv luv dhau lawm, ua kom ntev lub sijhawm deceleration;
Cov nyiaj raug them nyiaj (U / F piv) tau teeb tsa loj dhau, ua rau muaj ntau yam tsis muaj-thauj khoom tam sim no ntawm tsawg zaus;
Cov hluav taws xob thermal yog qhov ntsuas tsis raug, thiab kev ua haujlwm tam sim no tau teeb tsa me me, ua rau inverter ua haujlwm tsis raug.
Thaum kawg nco qab, yog hais tias cov hau kev saum toj no tsis tuaj yeem daws cov teeb meem, nws yog teeb meem inverter lossis cov teeb meem Optocouder lossis igbt feem ntau tuaj yeem daws cov teeb meem.