Dab tsi yog qhov sib txawv ntawm donies nyob rau hauv tag nrho choj thiab ib nrab choj invererers?

1, Topology Topology Differences txiav txim siab qhov tseem ceeb ua haujlwm ntawm dodes
(1) minimalist architecture ntawm ib nrab choj Inverter thiab lub luag haujlwm ntawm Diode cov tub ntxhais
Ib nrab Choj Inverter Adopts tus qauv pauv dual Diode, thiab DC sab ua ob sab uas capacitor voltagent. Siv inductive thauj khoom ua piv txwv, thaum tus choj sab caj npab hloov M1 tau muab rau, txoj kev tam sim no yog VDC / 2, thiab Diode D1 yog nyob rau hauv lub xeev Cuthopp. Thaum M1 tau muab tua, rov qab electromotive electructance cov foos tsis pub dhau D2: LOAD NODC / 2, uas ua tiav ob lub luag haujlwm loj:

Voltage clampage: txwv lub voltage uas hloov lub raj tuaj yeem tiv taus VDC / 2 kom tsis txhob muaj kev rhuav tshem;
Zog cov lus qhia: Muab cov channel tso tawm rau kev cia hluav taws xob cia kom tiv thaiv cov kab hluav taws xob voltage los ntawm kev hloov pauv tam sim no.
Kev sim cov ntaub ntawv qhia tau hais tias hauv 1kw ib nrab choj Inverter system, lub ncov freewheeling tam sim no ntawm D2 tuaj yeem ncav tes ua kom ntseeg tau tias hloov kev ua tau zoo.

(2) redundant architecture thiab diod ua haujlwm nthuav dav ntawm tag nrho cov choj Inverter
Tag nrho tus choj Inverter Adopts Adopts Admacts, uas ua tiav cov zis voltage polarity thim rov qab los ntawm kev hloov pauv ntawm ob khub ntawm cov keyboards. Nws qhov txawv txav yog xav txog hauv:

Bipololle Tswj: los ntawm kev sib xyaw ntawm T1-T4 kev tab, ua tiav voltage viav vias ntawm ± VDC tuaj yeem tau txais ntawm lub nra ntev. DONSIOES D1-D4 tsis yog ua tiav cov kev ua haujlwm dawb, tab sis kuj ua ib lub zog xav tau channel;
Ua txhaum Kev Tiv Thaiv: Thaum T1 thiab T4 yog ob qho tib si misguided, d2- d3 tuaj yeem tsim txoj kev tiv thaiv hluav taws xob luv luv los tiv thaiv DC npav Luv Npav.
Kev sim sib piv tau hais tias lub ncov yuav rov qab voltage borne los ntawm diodes nyob rau hauv ib nrab choj cov qauv, tab sis ntau dua cov khoom siv tam sim no) yuav tsum tau daws.

2, Cov lus teb zoo ntawm diodes hauv kev tswj hwm hluav taws xob
(1) Unidirectional zog tswj tswj ntawm ib nrab choj Inverter
Hauv ib nrab ntawm lub ntsiab lus sab saum toj, diodes form ib unidirectional zog hloov network. Noj daim ntawv thov ntawm photovoltaic micro inverers ua ib qho piv txwv, thaum lub zog hluav taws xob tau pub rov qab rau D2, thiab DIode xav tau raws li cov yuav tsum tau ua hauv qab no:

Qhov hluav taws xob zoo qis dua lossis sib npaug rau 0.5v (txo kev puas tsuaj);
Rov qab rov qab rov qab tsub dua QRR tsawg dua lossis sib npaug rau 100nc (txo qhov khiav tawm).
Raws li cov ntaub ntawv xeem los ntawm qee cov chaw tsim khoom siv, siv cov txheej txheem sai

(2) Bilirectional Zog Kev Cai ntawm Tag Nrho Choj Inverter
Tus txheej txheem tag nrho choj ua tiav cov zog kev tswj hwm hluav taws xob ntau dua los ntawm Diode Network:

Nquag Clamp: Hauv Transformer Coupling Inverters, D4-D4 tuaj yeem tsim lub Circuit Court los txwv lub raj hluav taws xob tsis pub dhau lub raj hloov chaw;
Mos hloov ua haujlwm: ua ke nrog resonant inductors, diodes tuaj yeem tsim xoom voltage hloov pauv. Tom qab txais cov thev naus laus zis no, tus hloov pauv ploj ntawm 4kW tag nrho cov choj Inverter tau txo los ntawm 65%.
Nws yog tshwj xeeb tshaj yog tsis yog nyob hauv peb {-}}}}}}}}} page tag nrho cov neeg ua haujlwm ntawm theem rau theem kom muaj zog sib npaug. Thaum lub sij hawm tam sim no ntawm qee theem ua, cov diode ntawm tus choj txawb tuaj yeem coj cov hluav taws xob ntau dhau mus rau lwm theem kev faib khoom.

3, cov cai sib txawv ntawm kev tswj hwm lub tswv yim rau cov yam ntxwv ntawm Dirode
(1) Kev tswj kom yooj yim thiab diode parameter txuam ntawm ib nrab choj inverter
Ib nrab choj tus qauv feem ntau tau txais kev tswj bipolar lossis unipolar spev tswj, thiab cov cai rau diodes tau tsom rau cov cwj pwm zoo li qub:

Rov qab lub sijhawm rov qab los ntev dua lossis sib npaug rau 50ns (haum rau high- zaus hloov);
Junction capacreity CJ tsawg dua lossis sib npaug rau 100PF (txo lub suab nrov hloov).
Raws li cov ntaub ntawv xaiv ntawm qee lub tsheb inverter project, xws li mur 860) tuaj yeem txo cov hluav taws xob hluav taws xob (EMI) los ntawm 8DB.

(2) cov kev hloov pauv nyuaj thiab kev yoog raws dynamics dynes nyob rau hauv tag nrho cov choj Inverters
Tus qauv uas tag nrho txhawb nqa kev hloov kho cov thev naus laus zis xws li zaus ua ob npaug rau cov spev, uas imposes siab dua cov kev xav tau dua dynamic

Qhov kub thiab txias: Hauv thaj tsam ntawm ntau -40 Degree ~ 150℃poob hloov pauv tus nqi yuav tsum tsawg dua los yog sib npaug nrog 5mv / degree;
Anti avalanche muaj peev xwm: nws yuav tsum tau tiv thaiv avalanche lub zog tsawg kawg 1.5 zaug cov rated tam sim no.
Ib qho kev muaj lub cev muaj zog tsav rooj plaub tau hais tias kev siv Silicon Carmide Diodes (xws li C3D10060E) tuaj yeem txhim kho lub sijhawm ua haujlwm rau 98.2% thiab luv luv lub sijhawm ntawm 500ns rau 200ns.

4, Kev sib piv ua tau zoo nyob rau hauv raug xaiv scenarios
Parameter ib nrab choj Inverter tag nrho cov choj Inverter
Tus naj npawb ntawm Diodes 2, 4
Kev ntxhov siab VDC / 2 VDC
Kev Nyuaj Siab Tam Sim No 1.5 Times Thauj Tam Sim No 2 zaug thauj khoom tam sim no
Tsawg tswj cov nyom (bipolar spev) thiab siab (zaus doubling spev)
Raug kev ua haujlwm 92-95% 95-98%
Tus nqi coefficien 1.0 1.8