Yuav ua li cas ua diodes tiv thaiv cov hlwb solar los ntawm kev tso tawm thaum hmo ntuj?

1, Lub hauv paus ntsiab lus: Unidirectional conductivity kev tsim kho ntawm lub zog thaiv
Cov yam ntxwv tseem ceeb ntawm diode yog nws unidirectional conduction {{}}} nws tsuas yog tso cai rau tam sim no kom muaj lub xeev siab nyob hauv qab kev thim rov qab. Cov yam ntxwv no ob qho tseem ceeb tiv thaiv nyob rau hnub ci zog:
Anti Rov Qab Them (Thaiv) Mechanism
Thaum lub voltage ntawm lub solar vaj huam sib luag yog qis dua qhov roj teeb, qhov tam sim no yuav muaj kev tiv thaiv los ntawm lub roj teeb los ntawm lub zog, uas poob rau lub zog ntawm lub roj teeb. Qhov thaiv Diode (xws li schottky diode) txuas nrog lub solar ntawm lub solar vaj huam sib luag, thaiv cov ntws rov qab los ntawm tam sim no. Piv txwv li, hauv ib qho 12v hnub ci zog system, SS14 SCHottky diodes (withstpress<0.1 μ A, which can effectively prevent the backflow of 0.5A level current at night.
Kub Hnov Kev Tiv Thaiv Kev Ua Haujlwm Kub
Hauv qee qhov kev ua yeeb yam tshwm sim, lub ntsej muag roj teeb tau dhau los ua cov hluav taws xob, thiab cov neeg muaj hluav taws xob siab yuav ua rau lawv rov qab ua kom kub siab (kub). Tus Bypass Diode (xws li 1N4007 Rectifier Diode) Txuas nrog kev sib txuas ntawm cov roj teeb kom tsis txhob muaj kev tiv thaiv thiab tsis txhob muaj qhov kub nyhuv. Cov ntaub ntawv xeem ntawm qee hom ntawm 60 lub teeb roj teeb module qhia tau tias thaum lub sij hawm thaiv tsis tau ua rau 85 degree, thaum tom qab qhov kub thiab txias tsis pub dhau 45 degree.
2, Daim Ntawv Thov Kev Ua Si: Pab them tag nrho los ntawm cov qauv ywj siab rau cov duab sib txuas ua ke
Cov anti tshem tawm haujlwm ntawm diodes sau los ntawm tag nrho cov xwm txheej ntawm Hnub Ci Zog Lub Nruab Nrab:
Independente photovoltaic
Hauv cov khoom lag luam ywj pheej xws li hluav taws xob muab thiab lub hnub ci teeb taws nyob hauv thaj chaw deb, thaiv diodes yog tus kawg ntawm kev tiv thaiv kom tiv thaiv roj teeb. Piv txwv li, lub hnub ci txoj kev teeb lub teeb ua haujlwm hauv QingHai Xeev tau siv 18650 Lithium roj teeb liab (nominal roj teeb 3.7v), thiab lub ntsuas hluav taws xob ua ke SS16 schottky dodes. Hauv xya hnub sib law liag los nag, cov roj teeb hluav taws xob tsuas yog 0.3V, thiab lub sijhawm ua haujlwm siv hluav taws xob txuas ntxiv yog txuas ntxiv 40%.
Grid -} Txuas Photovoltaic
Hauv cov chaw nres tsheb loj hauv av loj, thaiv cov khoom siv anti thiab anti backflow ua haujlwm los tiv thaiv tam sim no mus rau hauv lub photovoltaic array thaum sib xyaw. Chaw nres tsheb 50mw photovoltaic nyob hauv lub teb chaws Yelemees tsim qauv, nrog 20 modules txuas nrog hauv koob thiab sib txuas kev thaiv diodes. Thaum lub fais fab kev sib tw yog txiav tawm, lub kaw lus teb lub sijhawm tsawg dua 10ms, zam kev puas tsuaj khoom siv.
TXAWJ ZOG Zog
Hauv cov xwm txheej zoo xws li hnub ci hluav taws xob drones thiab lub tsheb mounted photovoltaics, diodes yuav tsum hloov mus rau ib puag ncig hnyav xws li kev hloov pauv thiab kub hloov pauv. Lub NASA thev naus laus zis ua rau hluav taws xob ua kom zoo dua qub
3, Ntaus Ntawv Xaiv: Kos duab ntawm Ntsuas Kev Ntsuas thiab Tus Nqi
Kev xaiv ntawm dodes yuav tsum muaj kev puas siab txog cov hluav taws xob tsis sib xws, ib puag ncig kev yoog tau, thiab tus nqi {- ua tau zoo:
Optimization ntawm rau pem hauv ntej siab poob (vf)
Qhov hluav taws xob poob ntawm kev thaiv cov diieres ncaj qha cuam tshuam kev ua tau zoo. Noj 100w photovoltaic ua ib qho piv txwv, thaum siv cov dab neeg zoo li qub Tom qab hloov mus rau schottky diodes (vf {4 4}} v), cov poob qis rau 0.3Wh, txuag tau kwv yees li 10.95Kh li cas ntawm ib xyoos ib zaug. Tam sim no, silicon carbide (sic) schottky diodes (vf {{{}}}}} raws li cov khoom lag luam, ua rau lawv haum rau cov xwm txheej muaj txiaj ntsig zoo.
Kev tsim qauv ntawm kev thim rov qab withstand voltage (VR) thiab muaj peev xwm tam sim no (yog)
Lub flucthable ntau yam ntawm kev ua haujlwm voltage ntawm photovoltaic feem ntau ± 20%, thiab dongs nrog 1.5 zaug qhov hluav taws xob siab tshaj plaws ntawm cov kab ke yuav tsum tau xaiv. Piv txwv li, 24v system yuav tsum siv cov khoom siv nrog VR ntau dua lossis sib npaug 40V. Hais txog qhov muaj peev xwm tam sim no, thaiv kev lom zem
Them Nyiaj Kub Kub
Cov tsis muaj tseeb ntawm Diod sib txawv ntau nrog qhov kub. Noj 1N5819 Schottky Diode raws li ib qho piv txwv, vf {}} v ntawm {degree}. Cov kev daws teeb meem suav nrog: Siv ntsuas qhov ntsuas kub kom haum qhov bias voltage, lossis xaiv cov khoom siv tsawg (xws li Stps20L45CT).
4, kev ua lag luam kev lag luam: los ntawm cov qauv teeb tsa rau kev txhim kho kev txawj ntse
Kev lag luam hauv ntiaj teb tau tsim cov qauv txheej txheem rau DIODE cov ntawv thov thiab txuas ntxiv hloov zuj zus mus rau kev txawj ntse:
Cov qauv ntawm kev tsim qauv
Niaj hnub nimno photovoltic cov modules feem ntau tau ua - hauv kev sib txuas ntawm ib qho diode connected hauv parallel txhua 18}} roj teeb. Qhov tseeb hi-mo 6 module los ntawm lub zog ntsuab ntsuab adlined tsim, kev sib xyaw 3% mus rau tsawg dua 5% rau cov duab ntxoov ntxoo ci ntsa iab.
Kev tsim kho ntawm cov tswj hwm ntse
Tus tshiab mpps maub los ua haujlwm koom tes ua ke Tom qab txais cov thev naus laus zis no, Huawei Sun2000 series inverters txhim kho kev ua tau zoo los ntawm 1.2% thiab nce txhua lub zog txhua xyoo tiam los ntawm kwv yees li 140 kw.
Kev tawg hauv cov ntaub ntawv tshiab
Lub thermal hluav taws xob diode tsim los ntawm University of New South Wales hauv Australia tiav kev ua kom tsaus ntuj lub zog rov qab los ntawm qhov kub kub sib txawv. Cov ntaub ntawv sim qhia tau tias hauv qhov sib txawv ntawm 20 degree, cov zis muaj zog ntawm ib lub raj mus txog rau yav tom ntej {}} huab cua rhotoltaic tshuab.