Vim li cas lub hwj chim ua diode indispensable tivthaiv hauv inverters?

1, Lub ntsiab cai qhia txog lub cev: Lub hauv paus rau lub cev rau kev tsim kho hluav taws xob hloov dua siab tshiab los ntawm kev txiav txim siab los ntawm kev coj ua
The core characteristic of a power diode is its unidirectional conductivity - it only allows current to flow from the anode to the cathode, and exhibits high impedance when reversed. Qhov tshwj xeeb no tsim kev sib cav ntawm lub cev sib cav rau kev hloov pauv lub zog hauv cov inverter, uas yog qhia tshwj xeeb hauv cov xwm txheej hauv qab no:

Bidirectional tswj kev rectification thiab inverter
Hauv lub photovoltaic inverter, lub hwj chim Diode thawj zaug hloov kho DC los ntawm cov neeg lim dej solulating, thiab tom qab ntawd cov lim dej ua ntej muab nws rau inverter module. Nyob rau hauv inverter theem, dodes ua ke nrog igt, Mosfet thiab lwm cov cuab yeej hloov mus kom hloov DC lub zog rau hauv PWM kev kho kom zoo. Piv txwv li, hauv ib peb {{{-}}}}}}} Txoj hlab pa rov qab los ntawm kev puas tsuaj rau lub npav, yog li zam kev puas tsuaj rau lub roj teeb lossis colfolytic capacitor.
Nruam Cov Flow Kev Tiv Thaiv Thiab Lub Zog Rov Qab
Thaum ib qho inverter drives ib tug inductive thauj khoom (xws li lub cev muaj zog lossis lub tshuab hloov pauv), muaj kev hloov pauv sai sai yuav tsim kom muaj lub zog hluav taws xob. Lub Hwj Chim Diero ua raws li lub freewheeping diode nyob rau hauv no xwm txheej, muab txoj kev paug tawm rau inductive tam sim no. Piv txwv li, hauv kev tswj lub cev muaj zog, thaum Diode tuaj yeem nqus lub zog ntawm lub zog winding, zam kev voltage spikes los ntawm kev nkag mus rau lub tshuab hloov. Qhov ntsuas ntsuas ntsuas ntawm cov cua lub zog hloov pauv tau qhia tau hais tias tom qab siv cov kauj ruam rov qab nrawm dua los ntawm 1200V rau 600V rau 600V, thiab lub neej ua haujlwm tau txuas ntxiv los ntawm peb zaug.
Clamp thiab overvoltage tiv thaiv
Lub hwj chim diodes tseem tuaj yeem ua haujlwm pov thawj clamp dodes kom txwv lub peak voltage hauv Circuit Court. Parallel TVs diodes diodes ntawm cov inverter tuaj yeem nqus tau cov teeb meem hloov pauv hloov lossis sib thooj. Piv txwv li, hauv qhov pib dub ntawm ntug dej kev ua liaj ua teb hluav taws xob, lub lag luam kev hloov pauv hluav taws xob hloov pauv ntawm thawj zaug ntawm cov cua tshuab pib.
2, Daim Ntawv Teev Npe: Pab them tag nrho los ntawm micro inverters mus rau siab- voltage convers
Cov yam ntxwv kev txawj ntse ntawm lub zog diodes kom lawv hloov mus rau inverter uas cov kev xav ntawm cov qib sib txawv, hluav taws xob sib txawv, thiab hloov cov chaw ua haujlwm. Lawv daim ntawv thov cov xwm txheej npog:

Micro Inverter (hauv qab 1kW)
Hauv tsev neeg lub tshuab photovoltaic, micro inverters yuav tsum tau ua tiav qib ntsuas qhov siab tshaj plaws lub zog taw tes (MPPT). Hauv cov xwm txheej no, lub zog dodes yuav tsum tau ua kom tau raws li qhov yuav tsum tau ua kom qis tom ntej Piv txwv li, infineon Coolstic ™ Schottky dailes yog ua los ntawm Silicon Carbide cov khoom, uas txo tau kev hloov ua tau zoo dua li cov khoom siv hluav taws xob sib xyaw ntawm cov inverers micro.
Txoj hlua Inverter (10KW-1MW)
Hauv kev ua lag luam photovoltaic fais fab nroj tsuag, cov hlua inverters yuav tsum tau ua kom cov kab mob uas yuav tsum tau ua kom muaj ntau pua pua qhov amperes. Lub zog dodes yuav tsum muaj cov peev txheej tam sim no withst constand lub peev xwm (i2fsm ntau dua los yog sib npaug ntawm 500a) thiab muaj sijhawm rov qab los yog sib npaug nrog 50ns). Piv txwv li, ROHM semiconductor sic mosfet module nrog ua {5} hauv 100kw photementacietly ntawm 98.7% cov ntsiab lus siab dua li cov khoom siv silicon siab dua.
HEEV NTSUAB TSWJ NYIAS HLOOV HLOOV (TOP 1MW)
Hauv kev siv lub cev muaj zog tsav thiab cov hluav taws xob hloov hluav taws xob, lub zog hluav taws xob yuav tsum tau tiv thaiv ntau txhiab ntawm ntau txhiab tus AMPERES. Piv txwv li, lub abb acs880 zaus hloov kho lub siab ntev igb thiab diamen module, txhawb nqa voltage qib thiab 10ka ncov tam sim no. Nws rov qab lub sijhawm rov qab rov qab, sib tham txog kev ua haujlwm ua haujlwm tau zoo nyob rau hauv high- voltage thiab siab tratararios.
3, kev lag luam kev lag luam: thev naus laus zis thev naus laus zis txhawb kev ua haujlwm tawg
Nrog rau qhov nrov ntawm peb -}} tiam cov ntaub ntawv thev naus laus zis, kev txhim kho lub zog hluav taws xob, kev txhim kho cov khoom siv hluav taws xob sib xyaw ua ke hauv qab no:

Cov Khoom Siv Innovation: Sic / Gan Diod Ua Tau Zoo
Sic diodes tau dhau los ua qhov kev xaiv uas nyiam tshaj plaws rau kev ua haujlwm siab dua vim yog lawv muaj ntau dua lossis sib npaug ntawm 100V ntau dua lossis sib npaug rau 1200v). Piv txwv li, hauv Inverter ntawm Vestas v164 - 9.5mw cua tshuab, kev siv cov khoom poob los ntawm 60% thiab system efficiency tshaj 99%. Gan Dailes ua tiav cov kev loj hauv cov neeg siv khoom siv hluav taws xob vim lawv tus ultra-qes rov qab them nqi (Q_nc). Piv txwv li, tus Ansenmei NSD1624 Diode txhawb nqa 2mHz hloov cov zaus, txo qhov loj ntawm cov neeg siv xov tooj txawb xov tooj los ntawm 50%.
Kev Tsim Ua ke: Modularity txhim kho kev ntseeg tau
Txhawm rau kom yooj yim inverter tsim, cov tuam ntxhab tau qhia ua ke cov qauv ntawm diodes thiab hloov khoom siv. Piv txwv li, Infineon Easypack ™ tus qauv ua ke sic Mosfet nrog Scasitic Inductance los ntawm 80% thiab hloov chaw los ntawm 30%. Nyob rau hauv Tesla's Megapack Lub Zog Cia Lub Zog, cov qauv hluav taws xob ua hluav taws xob ntawm lub inverter mus 5kW / kg thaum tswj qhov tsis ua haujlwm hauv qab 0.1%.
Ntse tswj: Kev ua kom zoo tshaj plaws ua tiav los ntawm cov digital diodes
Nrog rau kev txhim kho digital tswj thev naus laus zis, donises tau pib ua kev cai tswj qhov kub thiab cov kev hloov kho hluav taws xob. Piv txwv li, TPD2E007 Digital Diged los ntawm Ti tuaj yeem muab tiag tiag in {3} Lub sij hawm tawm tswv yim ntawm I2C interback ntawm I2C interback ntawm i2c intervation kev ua txhaum thaum qhov kub tshaj 150 degree. Nyob rau hauv lub hnub ci zog SG3125hV phot3125hh photovoltaic inverter, cov thev naus laus zis txhim kho qhov tseeb ntawm lub neej lub neej muaj nqi los ntawm 40%.