Hauv kev tswj hluav taws xob, cov khoom siv hluav taws xob, raws li kev siv dav siv hloov pauv, cuam tshuam ncaj qha rau kev ua haujlwm ruaj khov ntawm tag nrho cov cuab yeej los ntawm lawv lub neej kev sib cuag thiab kev ntseeg tau. Qhov tseeb, kev tiv thaiv kev tiv thaiv relay yog nruj dua li ntawm MOSFETs vim hais tias cov relays feem ntau yuav tsum tau ua haujlwm loj dua tam sim no, tshwj xeeb tshaj yog nyob rau hauv cov xwm txheej uas muaj DC inductive loads (xws li DC motors, DC clutches, thiab DC solenoid li qub). Thaum lub load inductive raug muab tua, lub zog hluav taws xob rov qab tuaj yeem ncav cuag ntau pua lossis ntau txhiab tus volts, thiab qhov tshwm sim tshwm sim tuaj yeem txo qis lub neej ntawm cov hluav taws xob tiv tauj rau photovoltaic relays, lossis tseem ua rau muaj kev puas tsuaj tag. Txawm tias muaj me me tam sim no (xws li nyob ib ncig ntawm 1A), lub nraub qaum electromotive quab yuam tuaj yeem ua rau arcing, ua rau hlau oxide paug ntawm cov hluav taws xob tiv tauj rau lub hnub ci vaj huam sib luag relays, nce kev tiv thaiv, thiab thaum kawg ua rau kev sib cuag tsis ua hauj lwm.
Nyob rau hauv DC loads, siab - zaus hloov ua haujlwm tuaj yeem ua rau tsis zoo electrochemical corrosion. Thaum muaj hluav taws xob arc tawm tshwm sim, nitrogen thiab oxygen nyob rau hauv cov huab cua react los tsim cov khoom corrosive. Qhov teeb meem no tshwj xeeb tshaj yog nyob rau hauv Kev Tiv Thaiv Hluav Taws Xob rau PV Relay daim ntawv thov, qhov twg cov tshuab photovoltaic feem ntau yuav tsum tau hloov mus rau thiab tawm. Tsis tas li ntawd, kev hloov khoom siv kuj yog ib qho tseem ceeb ua rau kev sib cuag tsis tau. Thaum ib qho kev sib cuag melts lossis puas lawm, cov khoom siv hlau ua rau kev hloov pauv, feem ntau concave ntawm cathode thiab convex ntawm lub anode. Sij hawm dhau mus, cov kev sib cuag tsis sib haum tuaj yeem ua ke, tiv thaiv cov relay ntawm kev sib txuas kom raug.
Rau Cov Hluav Taws Xob Hluav Taws Xob rau Hnub Ci Vaj Huam Sib Luag Relay thiab Kev Tiv Thaiv Nyiaj Txiag rau Hnub Ci Fais Fab Relay, cov khoom siv hluav taws xob los ntawm siab -tam sim no loads (tshwj xeeb tshaj yog capacitive thiab inductive loads) tuaj yeem tsim hluav taws xob arc, ua rau kev sib cuag vuam. Hauv qhov no, tsuas muaj ob lub tswv yim zoo: ib qho yog siv kev tiv thaiv hluav taws xob tiv thaiv hluav taws xob, thiab lwm qhov yog xaiv cov ntaub ntawv tiv tauj nrog kev tiv thaiv cov ntaub ntawv hloov pauv, xws li nyiaj - tin oxide, nyiaj - tungsten, lossis nyiaj - tooj liab sib txuas. Nyob rau hauv ib txwm kub thiab siab, qhov tawg voltage ntawm qhov tseem ceeb dielectrics hauv huab cua yog 200-300V. Yog li ntawd, lub hom phiaj ntawm kev tawm tsam yog feem ntau los tswj qhov hluav taws xob thoob plaws cov neeg sib cuag ntawm 200V lossis qis dua kom txo qhov tshwm sim ntawm arcing.
Muaj peb lub ntsiab lus tseem ceeb rau kev tiv thaiv DC inductive loads. Thawj yog ib tug series RC Circuit Court nyob rau hauv relay coil sab, haum rau daim ntaub ntawv uas lub relay tus nqi khiav hauj lwm voltage yog qis dua lub hwj chim mov voltage. Qhov Circuit Court no siv cov yam ntxwv uas qhov hluav taws xob thoob plaws lub capacitor tsis tuaj yeem hloov pauv sai sai thaum lub sijhawm kaw, siv lub zog siab dua rau lub kauj kom nrawm nrawm. Qhov thib ob yog qhov sib npaug RC Circuit Court ntawm Bimetal Rivet rau PV Inverter Relay sab. Thaum disconnecting, lub kauj tus kheej -induced electromotive quab yuam tawm los ntawm RC Circuit Court, ncua lub sij hawm lwj tam sim no thiab yog li extinguishing lub arc. Qhov thib peb, thiab feem ntau, yog lub parallel diode Circuit Court, feem ntau yog siv los tiv thaiv tus tsav tsheb transistor. Thaum lub transistor raug muab tua, lub diode clamps lub kauj tus kheej -induced electromotive quab yuam ntawm 0.7V (silicon transistor) los yog 0.2V (germanium transistor), tiv thaiv kev puas tsuaj rau tus tsav tsheb.
Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias tus qauv diode ua kom ntev lub sij hawm rov qab los ntawm relay, yog li ncua lub sij hawm arc thiab conversely shortening lub neej. Lub relay nrog lub diode txuas nrog lub kauj yuav muaj lub sijhawm tso tawm ntawm 9.8ms, thaum lub sijhawm rov qab tsis muaj diode tsuas yog 1.5ms. Siv Zener diode nyob rau hauv series nrog me me - lub teeb liab diode tuaj yeem txo lub sijhawm rau 1.9ms, ua rau nws xaiv zoo dua. Rau siab -voltage DC daim ntawv thov xws li Hluav Taws Xob Hluav Taws Xob rau Hnub Ci DC Relay thiab Kev Tiv Thaiv Nyiaj Txiag rau Lub Zog Tshiab PV Zog Cia HVDC Relay, kev tiv thaiv kev tsim hluav taws xob tsim nyog yog qhov tseem ceeb tshwj xeeb vim tias DC arcs nyuaj rau tua dua li AC arcs.
Muaj ob txoj hauv kev tiv thaiv tsis siv tau uas cov kws hluav taws xob yuav tsum zam hauv kev siv tswv yim. Thawj yog siv cov khoom tiv thaiv tsis sib haum xeeb hauv DC siab - zaus hloov qhov xwm txheej, uas tuaj yeem ua rau xiav -ntsuab corrosion ntawm cov neeg sib cuag (tsim los ntawm nitrogen oxides vim hluav taws xob hluav taws xob). Qhov thib ob yog tsis quav ntsej cov xwm txheej hloov khoom siv thiab siv cov ntaub ntawv tsis tsim nyog rau siab -tam sim no surges nyob rau hauv hluav taws xob tiv tauj rau hnub ci hloov, uas tuaj yeem yooj yim ua rau kev sib cuag vuam thiab adhesion.
Rau inductive loads, txawm hais tias kev tuav yog qhov nyuaj dua li kev tiv thaiv kev tiv thaiv, kev siv kev sib xyaw ua ke ntawm kev tiv thaiv thiab cov ntaub ntawv tiv tauj tuaj yeem txhim kho kev ua tau zoo. Tiv thaiv lub relay kauj yog yuav luag ib qho tseem ceeb raws li kev tiv thaiv Oxidized Hluav taws xob tiv tauj rau hnub ci Relay; ob qho tib si yuav tsum tau txiav txim siab. Hauv kev tsim vaj tsev, nws raug nquahu kom txuas ib qho RC arc- tua hluav taws xob sib npaug ntawm cov neeg sib txuas sib txuas, thiab tib lub sijhawm txuas lub diode-Zener series ua ke nyob rau hauv qhov sib npaug ntawm cov coil sab kom sib npaug kev sib raug zoo ntawm rub- nrawm, lub sijhawm tso tawm, thiab kev sib cuag lub neej.
Yog xav paub ntxiv txog kev tawm tswv yim ntawmTsiv Kev Sib Txuas Rau Lub Zog Tshiab Relaytiv thaiv thiab xaiv cov khoom siv, thov hu rau peb cov khoom engineering team. Peb muab ib qho kev pab cuam - nres los ntawm kev sib cuag cov khoom customization mus rau kev tiv thaiv scheme design.
tiv tauj peb
