Yuav ua li cas xaiv Qhov Tsim Nyog Qhov Tseeb Tawm Diode txhawm rau txhim kho kev ua haujlwm inverter?

一, Core Parameter: Lub cev rau kev txhim kho kev ua haujlwm
1. Forpar voltage poob (vf) thiab kev poob siab
Forwards voltage poob yog qhov voltage poob thaum lub conduction ntawm Diode, uas cuam tshuam ncaj qha cuam tshuam rau kev poob phaus (p_ vf × iavg). Piv txwv li, VF ntawm cov paai rectifier diodes yog hais txog 0.7v, thaum Schottky diodes yuav muaj tsawg li 0.15-0.4.4.4.4.4.4.4.4.4.4.45V. Nyob rau hauv tsis tshua muaj hluav taws xob thiab siab qhov xwm txheej tam sim no (xws li 48v DC lub tsheb thauj hluav taws xob), siv SCottky diodes tuaj yeem txo kev ua kom qeeb los ntawm 40% thiab txhim kho kev ua haujlwm tau zoo.

Cov ntaub ntawv: Ib co photovoltaic inverter siv siv 1N5819 sch {{} v), thiab kev puas tsuaj rau 3.5W ntawm 107%.

2. Rov qab lub sijhawm rov qab (TRR) thiab hloov chaw poob
The reverse recovery time is the time required for a diode to transition from conduction to cutoff state, during which reverse current spikes are generated, resulting in increased switching losses. In high-frequency inverters (such as switching frequency>20kHz), Trr ua cov efficion fiilieck.

Traditional silicon diodes: TRR is usually>500ns, Haum rau lub zog hluav taws xob rectification (50 / 60Hz).
Cauj rov qab txoj kev sau tseg: TRR yog 150-500ns, haum rau cov invertiation zaus inverters (xws li lub cev muaj zog).
Ultra Fast Rov Qab Diode: Trr yog 15 {-}}}}}}}}}}} Cov inverers high-zaus).
Silicon carbottky diode: trr ze rau 0Ns, tsis muaj kev rov qab los ntawm ultra {1} hyreatory cov xwm txheej them cov chaw nres tsheb).
Cov ntaub ntawv txhawb nqa: nyob rau hauv 50kW peb -}}}}}}}}} {} eff eff eff eff efficiency eff incr້ນ nce los ntawm 96.2% rau 97.5%.

3. Peak Instruction voltage (piv) thiab kev ruaj ntseg npoo
PIV yog qhov thim rov qab ntau tshaj plaws uas muaj diode tuaj yeem tiv taus. Hauv kev xaiv tiag tiag, nws yog ib qho tsim nyog los xav txog lub ncov siab nthuav dav hluav taws xob thiab surrge voltage:

Muab cov txheej txheem: Piv txwv li ntau dua los yog sib npaug rau 1.2 × v_in (muaj txiaj ntsig zoo ntawm ac tswv yim).
Piv txwv li: rau 220V AC tawm nrog lub ncov voltage ntawm 311V, nws raug pom zoo kom xaiv cov kev lom zem ntau dua lossis sib npaug ntawm GBJ801, xws li GBJ801, xws li GBJ801, xws li GBJ801, xws li × V 4=400 v).
Cov Lus Ceeb Toom Txaus Siab: Yog tias cov kab mob tsis txaus, cov diode yuav tawg thaum lub zog hluav taws xob lossis cov phiaj xwm tsis muaj zog, ua rau inverter tsis ua hauj lwm.

2, Daim Ntawv Thov Kev Saib Xyuas: Qhov tseem ceeb rau kev ua kom zoo
1. Kev loj inverter: Qhov zoo ntawm ultra Fast Rov qab Diode
Nyob rau hauv high - zaus inverters, qhov hloov zaus tuaj yeem ncav cuag ntau dua 100khz, thiab TRR dhau los ua qhov tseem ceeb dhau los. Piv txwv li:

Lub cev muaj zog uas tau txais: Siv Ultra Cast Rov Qab Rov Qab Dones (xws li mur 860} ns) tuaj yeem ua rau hloov chaw los ntawm 30%.
Kev sib txuas lus fais fab Inverter: silicon carbide diodes (xws li C3D060A, TRR {} tuaj yeem ua tau zoo rau 98%.
2. Cov Kev Ntsuas Hluav Taws Xob thiab Kev Sib Tw Siab Tam Sim No: Kev noj cov nyhuv txo qis ntawm schottky diodes
Hauv 48v DC npav lossis roj teeb lub zog khaws cia; tsawg VF Knottky diodes yuav txo cov kev puas tsuaj:

Cov ntaub ntawv sib piv: Ntawm 100a tam sim no, kev ua kom poob ntawm 1N5819 (vf {} v) yog 35W, thaum 10W.
Cov ntaub ntawv thov daim ntawv thov: Tom qab txais cov ntaub ntawv schottky donges nyob rau hauv ib qho chaw khaws ntaub ntawv ntau ntxiv los ntawm 1.2% thiab cov hluav taws xob txuag tau txhua xyoo tau txog 12000 xyoo.
3. Kev siab ntseeg txoj cai: Qhov sov ruaj khov ntawm silicon carbide diodes
Silicon Carbide Diodes muaj qhov kub thiab txias tshaj li ntawm silicon donges, ua rau lawv haum rau high {0} {} {} {} {} {} {} {0} {} {}}}}}}} qhov chaw ib puag ncig siab

Lub tsheb hluav taws xob inverter: hauv qhov kub ntawm -40
Cov ntaub ntawv txhawb nqa: Kev sim ntawm lub zog hluav taws xob tshiab inverter pom tias kev laus tus nqi ntawm lub cev nqaij ntau dua los ntawm 0.3% ntawm 125 degree, thaum ntawm Silicon diodes siliodes txo los ntawm 1.8%.
3, Xaiv Lub Tswv Yim: Kos duab ntawm kev sib piv kev ua haujlwm thiab tus nqi
1. Parameter ua ntej sorting
High frequency scenario: trr>Vf>PIV>nqi.
Low voltage and high current scenarios: Vf>cost>trr>PIV.
High reliability scenario: temperature stability>PIV>trr>Vf.
2. Ntim thiab kub dissipation tsim
Tsawg lub zog hluav taws xob: Ua Ntej SMA / SMB ntim (xws li SS14 Scottky Diode) kom txuag PCB qhov chaw.
Cov xwm txheej muaj zog: siv rau-220 lossis rau-247 ntim, sib xyaw ua ke nrog cov cua sov lossis cov kua txias txias.
3. Kev ntsuas tus nqi thiab kev ua tau zoo
Cov xwm txheej uas muaj peev xwm tsawg: Hauv lub zog hluav taws xob inverter, 1N4007 Series tuaj yeem xaiv (nrog tus nqi ntawm 0.1 Yuan / Tsev), tab sis kev ua kom tiav yog li 1%.
Kev ua tau zoo tshaj plaws: Txawm hais tias tus nqi ntawm silicon carbide dodes yog siab (txog 5 yuan / tuaj yeem siv rau lub sijhawm ntev tshaj li cov nqi.
4, Cov Ntaub Ntawv Teev Tseg: Kev ua tau zoo dhau ntawm photovoltaic inverters
Ib qho 5KW photovoltaic inverter keeb kwm siv 1N4007 silicon donges, nrog ntsuas ntsuas ntawm 95.3%. Los ntawm kev tso cai hauv qab no:

Kev Refution JBJ801 fais fab choj pawg (VF {{v, trr =500 ns), kev ua haujlwm tau nce rau 95.8%.
Tso Tawm Dawbheeling: Siv Mur 860 ultra Fast Rov Qab Diode (Trr=35}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}} Kuv tau ua haujlwm tau zoo rau 96.5%.
DC {- DC Boost: Qhia Txog C3D06060a silicon Carbide Diode (Trric} NS), cov efficievient thaum kawg mus txog 97.2%.
Kev Ntsuam Xyuas Nyiaj Txiag: Tom qab kev ua kom zoo dua, cov khoom siv hluav taws xob txhua xyoo nce ntxiv los ntawm 4.2%, thiab cov peev nyiaj them rov qab tsuas yog 1.8 xyoo xwb.