Yuav ua li cas kom ua tiav kev rho tawm tam sim no ntawm diodes hauv multi- theem hauv cov tshuab inverter?

, Lub cev ntawm diode tam sim no rho tawm
Cov ntsiab lus tseem ceeb ntawm donges los ntawm unidirectional conductivity ntawm pn junctions. Thaum tom ntej kev ntxub ntxaug, qhov hauv p cheeb tsam thiab cov hluav taws xob hauv thaj av hauv cheeb tsam, thiab cov tsis kam yuav qis li 0.1 ω; Thaum thim rov qab, lub unspletion txheej dav nrog kev hloov pauv ntawm megoog siab thiab thaiv rov qab muaj peev xwm tam sim no txog qib microampere. Qhov kev coj ua Asymmetric no ua rau nws lub ntuj hloov chaw nyob hauv.

Nyob rau hauv mult -} theem no inverter system, dodes ua tiav kev rho tawm ntawm kev tsim ib txoj kev unidirectional tam sim no. Piv txwv li, nyob rau hauv ob qho - Cov photovoltaic inverter, cov inverter tam sim no los ntawm kev ua txhaum cai ntawm lub hauv ntej -} Lub zog fais fab tuag. Kev sim cov ntaub ntawv qhia tau tias thaum siv 1N4148 teeb liab Diode, qhov thim rov qab tam sim no tsuas yog 0.1 μ, thiab kev cais tawm tau tshaj 99.999%.

2, cov ntawv teev kev rho tawm cais nyob rau hauv multi-} theem hauv cov tshuab inverter
1. Kev xaiv kev muaj zog rau kev xaiv rau cascaded h -} Choj inverers
Nyob rau hauv ib tug cascaded h - Choj Statcom (txhua qhov h- Choj chav txuas nrog hauv lub ntsuas hluav taws xob. Thaum DC sab capacitor luv txoj cai luv luv tshwm sim hauv ib qho kev sib txuas ntawm 0.5v) tuaj yeem thaiv cov khoom siv hluav taws xob (xws li SB560, nrog rau SB560, nrog rau SB560, nrog rau SB560, nrog rau SB560, nrog rau SB560 Simulation qhia tau tias cov txheej txheem no ua rau cov kab ke ua kom tiav kev sib cais sai dua li kev rov qab ua haujlwm hauv kev teb ceev.

2. Sub module rho tawm ntawm cov multilevel converter (mmc)
MMC submodule adopts ib nrab choj qauv. Thaum lub capacitor voltage ntawm submodule yog tsis sib xws, cov kab txuas nrog lub rf306, rov qab rov qab lub capactrging. Raws li cov ntaub ntawv ntawm Tennet's TennNet's 500kV DC cov phiaj xwm kev ua haujlwm hauv lub teb chaws Yelemees, kev lees paub cov qauv no txo ​​qis los ntawm 1.2 feem pua ​​cov ntsiab lus.

3. Redundant Fais Fab Tsim Tsim rau photovoltaic sib tshuam sib txuas inverters
Nyob rau hauv txoj hlua photversi inverters, ntau tus mpt (siab tshaj plaws fais fab taw) Raws siv los ua kom tiav lub zog rov qab los ntawm kev sib tw ua haujlwm lossis rooj vag voj voog. Thaum cov zis hluav taws xob ntawm qee cov channel txo qis vim tias Mbr2045 hloov mus rau tom ntej no 0.32V) cia li hloov mus rau cov channel zoo kom ntseeg tau tias muaj zog txaus tawm. Cov kev ntsuam xyuas tau qhia tias cov phiaj xwm no tuaj yeem ua rau lub zog hluav taws xob ntawm photovoltaic arres los ntawm 8%, tshwj xeeb yog nyob rau hauv ib nrab obsided scenarios qhov twg yog qhov tseem ceeb.

3, engineering kev txhim kho thiab kev ua tau zoo txhim kho
1. Xaiv cov poob qis diodes
Cov tshuaj voltage rau pem hauv ntej poob (0.6-0.7v) ntawm cov tsoos silicon diodes tuaj yeem ua rau poob qis hauv cov ntawv thov tseem ceeb tam sim no. Siv Silicon Carbide (Sic) Scottky Diodes (xws li C3D060A, Forw Forwardage Poob) 1.3v@10a) Nws tuaj yeem txo kev puas tsuaj los ntawm 60%. Nyob rau hauv 100kw photovoltaic inverter, cov txheej txheem no txo ​​cov teeb meem poob ntawm 120W txog 48W rau 48w thiab txhim kho cov ntsiab lus ntawm 0.05 feem pua ​​cov ntsiab lus.

2. Rov qab ua kom rov zoo dua qub
Nyob rau hauv high - zaus hloov cov ntawv thov, lub sijhawm rov qab los (TRR) Kev siv cov nrawm nrawm dones (xws li fr307, trr =100 ns) tuaj yeem muab piv rau kev poob los ntawm 35% piv rau=500 ns). Tom qab tau txais cov phiaj xwm no, tag nrho cov kev ua tau zoo tag nrho ntawm Siemens series inverres tau nce los ntawm 98.2% rau 98.7%.

3. Kev sib xyaw ua ke ntawm kev daws teeb meem
Qhov zoo tshaj plaws Diode maub los raws li Mosfet (xws li LM5050) ua tiav lub sijhawm rov qab los ntawm kev tswj hwm kev nquag. Nyob rau hauv Tesla's Megapack Lub Zog Ntim Khoom, Cov kev daws teeb meem txo cov sib cais ntawm kev poob ntawm 2.5W rau 0.3W, thiab txhim kho cov txheej txheem kev ua haujlwm ntawm 0.2 feem pua ​​cov ntsiab lus. Nyob rau tib lub sijhawm, nws 0.05v haum voltage poob yog txo qis los ntawm 90% piv rau cov kev ua yeeb yam

4, cov thev naus laus zis thev naus laus zis
1. Daim ntawv thov ntawm dav bandgap semiconductor pab kiag li lawm
Gallium nitride (GaN) diodes are gradually replacing silicon devices in high-end fields such as 5G base station power supplies and aerospace power supplies due to their ultra-low on resistance (0.1m Ω· cm ²) and high-frequency characteristics (fT>1GHZ). Lub EPC2054 Gan Dioded los ntawm EPC tuam txhab muaj rau pem hauv ntej Voltage poob ntawm tsuas yog 0.2V ntawm 10a tam sim no, yog 85% qis dua li sic pab kiag li lawm.

2. Kev sib xyaw ntawm cov thev naus laus zis rho tawm
Tus ntse Diode module ua ke nrog digital tswj tshuab tuaj yeem ua tiav cov hluav taws xob dynarage poob nyiaj thiab ua txhaum kev ua txhaum. Lub Hwj Chim Grid Series ntawm Ntse Kev Txawj Ntse Ua Tau Zoo Tshaj los ntawm Lub Sij Hawm Kub thiab Tam Sim No Nyob Rau Hauv Lub Sij Hawm Ua Ntej

5, kev txiav txim siab tseem ceeb hauv kev ua lag luam engineering
1. Parameter txuam tsim qauv
Kev xaiv ntawm diodes yuav tsum muaj kev nkag siab ntawm cov hluav taws xob hluav taws xob rau pem hauv ntej (VF), rov qab lub sijhawm rov qab (VRRM), thiab ntaus nqi tam sim no (yog tias). Piv txwv li, nyob rau hauv 1500v photovoltaic, diodes nrog VRRM ntau dua lossis sib npaug nrog 1800V yuav tsum tau xaiv, thiab 30% cov paj ntaub pua tam sim no yuav tsum tau tshwj tseg.

2. Thermal Pawg Tswjhwm
Nyob rau hauv high -} kev siv ntsuas kub thiab txias thiab txias. Tus tsim cua sov cov txheej txheem cua sov tsis zoo siv thermal conductive silicone roj (thermal ua rau muaj 12,℃ua rau 8,

3. Electromagnetic Compatibility Tsim
Lub Di / DT suab nrov tsim los ntawm Diode hloov mus los yuav tsum tau raug tsim txom los ntawm RC tsis sib txuas. Nyob rau hauv 10kw inverter, ib qho ntas yeej siv 0.1 μ fena capacitors thiab 10 ω tiv thaiv tau los ntawm 50v, sib ntsib ntawm iec 61000-4 electromagnetic compatibility txheem.

6, Kev Lag Luam Kev Lag Luam
1. Huawei Sun2000-125Ktl photovoltaic inverter
Cov khoom lag luam no tau txais kev ua cascaded h - Choj - ns) kom ua tiav theem tam sim no rho tawm. Cov ntaub ntawv ntsuas tiag tiag qhia tau tias hauv cov xwm txheej sib piv, lub zog hluav taws xob tau nce los ntawm 9.3% piv rau cov kev daws teeb meem ib txwm muaj, thiab kev ua tau zoo nyob hauv Europe nce 98.8%.

2. Siemens Sicam AIS Grid Stabilizer
Hauv cov ntawv thov kwv yees, cov cuab yeej siv Silicon Carbide Diode Modules (C4D20120d) los txo sub submodule hloov poob los ntawm 40%. Qhov ntsuas ntsuas ntsuas ntawm German fais fab kev sib koom tes qhia tau tias lub sijhawm kaw lus tau muab nce ntxiv los ntawm peb zaug.