Nyob rau hauv siab - qhov tseeb DC fais fab faib chaw xws li photovoltaic zog cia, hluav taws xob tsheb them pawg, thiab cov ntaub ntawv chaw, DC fais fab ntsuas ntsuas yog qhov tseem ceeb "lub zog xa hluav taws xob." Qhov tseeb thiab kev ruaj ntseg ntawm cov ntsuas no nyob ntawm ib qho kev taw qhia tseem ceeb- lawv ntes thiab ntsuas qhov tam sim no ntws los ntawm lub voj voog.
Rau ntau tus qub tub rog engineers, "shunt" yog ib qho kev paub zoo heev tam sim no. Txawm li cas los xij, nrog kev txhim kho sai ntawm cov thev naus laus zis, cov ntsiab lus tshiab xws li Hall effect sensors, fluxgate sensors, thiab txawm tias TMR (tunnel magnetoresistive) tau tshwm sim ib tom qab.
Hall effect sensors
Cov sensors siv Hall semiconductor ntsiab los ntsuas qhov tam sim no los ntawm kev hnov cov magnetic teb generated nyob ib ncig ntawm tus thawj neeg xyuas pib. Qhov no yog ib qho nrov heev uas tsis yog - txoj kev ntsuas kev sib cuag, nws qhov txiaj ntsig loj tshaj plaws yog nws cov khoom siv hluav taws xob cais tawm, tshem tawm cov kev txhawj xeeb txog qhov hluav taws xob siab ncaj qha cuam tshuam rau cov ntsuas qis qis, ua rau muaj kev nyab xeeb heev.
Fluxgate Tam sim no Sensor
Qhov no yog ib qho txheej txheem uas siv cov yam ntxwv saturation ntawm high -permeability hlau core nyob rau hauv ib qho chaw sib nqus magnetic teb rau indirect ntsuas tsis muaj zog magnetic teb.
Nws cov yam ntxwv yog qhov txawv heev: qhov raug siab heev thiab qhov ntsuas kub tsawg tsawg, ua rau nws nquag siv hauv siab - qhov tseeb DC kuaj pom, hluav taws xob ntsuas hluav taws xob, thiab ntsuas ntsuas ntsuas ntsuas. Txawm li cas los xij, nws qhov tsis zoo suav nrog tus nqi siab thiab cov lus teb qeeb qeeb.
TMR sensors, thiab lwm yam.
TMR stands rau Tunnel Magnetoresistance. Cias muab, nws yog siab -precision magnetic sensor raws li magnetoelectronics. Nws cov tub ntxhais yog siv nanoscale sandwich qauv ntawm "ferromagnetic txheej / tsis yog-magnetic insulating txheej / ferromagnetic txheej" kom ua tiav cov kev hloov pauv ntawm cov teeb liab sib nqus rau cov teeb liab hluav taws xob los ntawm electron spin.
Lub "Moat" ntawm Shunts: Vim li cas Cov Kev Siv Hluav Taws Xob tsis tuaj yeem cuam tshuam nws txoj kev tswj hwm?
Muab lub siab - thev naus laus zis thiab muaj peev xwm muaj peev xwm ntawm Hall effect sensors thiab fluxgate hlau nplaum, vim li cas lub shunt, uas zoo li tooj liab bar lossis resistor, tseem yog qhov feem ntau thiab ntseeg tau shunt hauv khw? Cov lus teb yog nyob rau hauv nws plaub lub ntsiab zoo:
Unparalleled ntsuas qhov tseeb thiab linearity
Txawm hais tias cov thev naus laus zis peripheral hloov zuj zus li cas, cov cai ntawm physics tseem yog qhov ncaj ncees tshaj plaws. Lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm shunt yog dawb huv heev -Ohm txoj cai. Vim tias nws yog qhov tseem ceeb ntawm qhov tseeb manganese- tooj liab resistor nrog qhov kub tsis tshua muaj coefficient, nws qhov kev tiv thaiv -tam sim no hloov nkhaus yog yuav luag ib txoj kab ncaj nraim, nthuav tawm qhov tshwj xeeb linearity thiab me me tsis ncaj ncees lawm.
Hauv qhov sib piv, Hall cov ntsiab lus raug cuam tshuam los ntawm kev sib nqus Circuit Court, ua rau me ntsis nonlinear offsets, thaum cov hlau nplaum fluxgate nthuav tawm cov lus teb hysteresis. Raws li cov kws tshaj lij kev lag luam tau taw qhia: yog tias qhov tseeb ntawm kev ntsuas tam sim no yog qhov tseem ceeb, ces qhov kev daws teeb meem shunt resistor ua ke nrog qhov tseeb millivolt transmitter yog qhov kev xaiv zoo tshaj plaws.
Tus nqi kawg -Kev ua tau zoo thiab kev ntseeg siab
Thaum cov nyhuv Hall thiab fluxgate sensors muaj kev nplua nuj ntawm kev ua haujlwm, lawv xav tau cov hlau cores thiab coils, nrog rau cov khoom siv hluav taws xob theem nrab thiab cov nyiaj them rov qab zoo sib xws. Tshwj xeeb tshaj yog nyob rau hauv lub lag luam DC lub zog ntsuas hluav taws xob, qee qhov siab - qhov tseeb kaw- voj Hall effect sensors tuaj yeem raug nqi tsib mus rau kaum npaug ntau dua li cov shunt resistors.
Nyob rau hauv sib piv, shunts yog heev yooj yim nyob rau hauv cov qauv, purely passive pab kiag li lawm, thiab khiav lag luam ntseeg tau yam tsis muaj zog ntxiv, ua rau lawv exceptionally robust thiab check. Nyob rau hauv tus nqi -sensitive pej xeem DC lub zog ntsuas hluav taws xob thiab chaw nres tsheb them nqi lag luam, tus nqi- kev ua tau zoo ntawm shunts sawv cev rau qhov txiaj ntsig tseem ceeb uas txawm tias cov sensors nyuaj nyuaj los kov yeej.
Hwj chim tshaj -Range Capability thiab Ultra-Wide Temperature Adaptability
Nyob rau hauv tiag tiag - ntiaj teb kev lag luam ib puag ncig, tam sim no tam sim no feem ntau nyob deb tshaj tus nqi ntsuas. Shunt units qhia tau zoo kawg nkaus resilience nyob rau hauv no hais txog. Piv txwv li, lub siab -qhov kev txiav txim siab shunt nyob rau hauv kev ua lag luam tuaj yeem yooj yim tuav tam sim no surge tam sim no kaum tawm lub sij hawm siab dua nws cov nqi ntsuas thoob plaws qhov ntsuas kub ntawm -40℃rau +105℃, yam tsis muaj kev cuam tshuam cov qauv raug.
Hauv qhov sib piv, cov ntsuas ntsuas raws li cov hauv paus ntsiab lus sib nqus muaj qhov cuam tshuam rau cov tub ntxhais saturation lossis siab -kub demagnetization thaum tam sim no siab dhau, ua rau kev ntsuas kev cuam tshuam lossis txawm tias cov khoom puas tsuaj mus tas li.
Muaj zog tiv taus rau Electromagnetic cuam tshuam
Thaum Hall effect thiab fluxgate magnetometer sensors ua tiav qhov tsis zoo -kev ntsuas kev sib cuag, nyob rau hauv ib puag ncig uas muaj cov hlau nplaum muaj zog thiab siab - zaus cuam tshuam (xws li ze rau siab - zog inverters lossis siab -tam sim no busbars), stray magnetic teb tau yooj yim infiltrate lub ntsuas ntsuas ntsuas, ua rau tsis muaj kev cuam tshuam.
Nyob rau hauv sib piv, shunt converters yog ntshiab circuit direct series sampling li. Lawv tsuas yog loyal rau qhov voltage poob thoob plaws lawv tus kheej tsis kam, thiab yog zoo tsis cuam tshuam los ntawm sab nraud stray electromagnetic teb. Qhov no ua rau lawv tshwj xeeb txhim khu kev qha nyob rau hauv complex electromagnetic compatibility (EMC) txee.